Journal articles on the topic 'Forage directionnel'

To assess forage response to a companion crop in the seeding year and the residual effects the following year, a one-directional logarithmic progression of companion crop populations was imposed on a uniform seeding of forage. Low-order inverse polynomial equations fit the results well, while allowing a biologically realistic interpretation. All forage-companion crop combinations produced similar results and suggested that for companion crop populations from the near-commercial 180 plants m−2 down to 20 plants m−2, maximum production of both companion crop and forage is not possible. The technique allowed a parsimonious use of materials and land but required superior experimental technique.Key words: companion crop, forage, competition, experimental design.

Asymmetrical intraguild predation (AIGP), which combines both predation and competition between predator species, is pervasive in nature with relative strengths varying by prey availability. But with species redistributions associated with climate change, the response by endemic predators within an AIGP context to changing biotic–abiotic conditions over time (i.e. seasonal and decadal) has yet to be quantified. Furthermore, little is known on AIGP dynamics in ecosystems undergoing rapid directional change such as the Arctic. Here, we investigate the flexibility of AIGP among two predators in the same trophic guild: beluga ( Delphinapterus leucas ) and Greenland halibut ( Reinhardtius hippoglossoides ), by season and over 30 years in Cumberland Sound—a system where forage fish capelin ( Mallotus villosus ) have recently become more available. Using stable isotopes, we illustrate different predator responses to temporal shifts in forage fish availability. On a seasonal cycle, beluga consumed less Greenland halibut and increased consumption of forage fish during summer, contrasting a constant consumption rate of forage fish by Greenland halibut year-round leading to decreased AIGP pressure between predators. Over a decadal scale (1982–2012), annual consumption of forage fish by beluga increased with a concomitant decline in the consumption of Greenland halibut, thereby indicating decreased AIGP pressure between predators in concordance with increased forage fish availability. The long-term changes of AIGP pressure between endemic predators illustrated here highlights climate-driven environmental alterations to interspecific intraguild interactions in the Arctic.

Airspace is a key but not well-understood habitat for many animal species. Enormous amounts of insects and birds use the airspace to forage, disperse, and migrate. Despite numerous studies on migration, the year-round flight activities of both birds and insects are still poorly studied. We used a 2 year dataset from a vertical-looking radar in Central Europe and developed an iterative hypothesis-testing algorithm to investigate the general temporal pattern of migratory and local movements. We estimated at least 3 million bird and 20 million insect passages over a 1 km transect annually. Most surprisingly, peak non-directional bird movement intensities during summer were of the same magnitude as seasonal directional movement peaks. Birds showed clear peaks in seasonally directional movements during day and night, coinciding well with the main migration period documented in this region. Directional insect movements occurred throughout the year, paralleling non-directional movements. In spring and summer, insect movements were non-directional; in autumn, their movements concentrated toward the southwest, similar to birds. Notably, the nocturnal movements of insects did not appear until April, while directional movements mainly occurred in autumn. This simple monitoring reveals how little we still know about the movement of biomass through airspace.

The well-being of a honeybee (Apis mellifera) colony depends on forager traffic. Consistent discrepancies in forager traffic indicate that the hive may not be healthy and require human intervention. Honeybee traffic in the vicinity of a hive can be divided into three types: incoming, outgoing, and lateral. These types constitute directional traffic, and are juxtaposed with omnidirectional traffic where bee motions are considered regardless of direction. Accurate measurement of directional honeybee traffic is fundamental to electronic beehive monitoring systems that continuously monitor honeybee colonies to detect deviations from the norm. An algorithm based on digital particle image velocimetry is proposed to measure directional traffic. The algorithm uses digital particle image velocimetry to compute motion vectors, analytically classifies them as incoming, outgoing, or lateral, and returns the classified vector counts as measurements of directional traffic levels. Dynamic time warping is used to compare the algorithm’s omnidirectional traffic curves to the curves produced by a previously proposed bee motion counting algorithm based on motion detection and deep learning and to the curves obtained from a human observer’s counts on four honeybee traffic videos (2976 video frames). The currently proposed algorithm not only approximates the human ground truth on par with the previously proposed algorithm in terms of omnidirectional bee motion counts but also provides estimates of directional bee traffic and does not require extensive training. An analysis of correlation vectors of consecutive image pairs with single bee motions indicates that correlation maps follow Gaussian distribution and the three-point Gaussian sub-pixel accuracy method appears feasible. Experimental evidence indicates it is reasonable to treat whole bees as tracers, because whole bee bodies and not parts thereof cause maximum motion. To ensure the replicability of the reported findings, these videos and frame-by-frame bee motion counts have been made public. The proposed algorithm is also used to investigate the incoming and outgoing traffic curves in a healthy hive on the same day and on different days on a dataset of 292 videos (216,956 video frames).

Finding suitable forage patches in a heterogeneous landscape, where patches change dynamically both spatially and temporally could be challenging to large herbivores, especially if they have noa prioriknowledge of the location of the patches. We tested whether three large grazing herbivores with a variety of different traits improve their efficiency when foraging at a heterogeneous habitat patch scale by using visual cues to gaina prioriknowledge about potential higher value foraging patches. For each species (zebra (Equus burchelli), red hartebeest (Alcelaphus buselaphussubspeciescamaa) and eland (Tragelaphus oryx)), we used step lengths and directionality of movement to infer whether they were using visual cues to find suitable forage patches at a habitat patch scale. Step lengths were significantly longer for all species when moving to non-visible patches than to visible patches, but all movements showed little directionality. Of the three species, zebra movements were the most directional. Red hartebeest had the shortest step lengths and zebra the longest. We conclude that these large grazing herbivores may not exclusively use visual cues when foraging at a habitat patch scale, but would rather adapt their movement behaviour, mainly step length, to the heterogeneity of the specific landscape.

The ability of social insect colonies to recruit nestmates to profitable resources increases colony-wide foraging efficiency by providing individuals with information that narrows their search for resources. Here we ask if for the Neotropical swarm-founding waspPolybia occidentalisnaïve nestmates are able to use food-scent cues from rich carbohydrate resources brought to the nest by successful foragers to orient to off nest resources. Foragers were allowed to freely visit a training dish containing a scented sucrose solution. At a second location, in a different direction from the nest, two sucrose-filled dishes were offered, one with the training scent and one with an alternate scent. Naïve foragers preferentially chose the training scent over the alternate scent, indicating that natural rates of resource inflow to the nest are sufficient to induce nestmates to forage at resources with a specific scent. Naïve foragers did not forage more often at the location at which the active foragers were foraging, an indication that directional information is not communicated in this species. The total number of foraging trips made by a colony's foragers was not determined by the size of the foraging force, but rather by the average individual foraging rate for the colony.

Dental asymmetry (directional, anti-symmetry, and fluctuating) is analyzed in samples from two prehistoric Native American populations: a terminal Late Archaic population (3200-2700 BP) and a Late Prehistoric population (ca. 750 BP). Both directional and fluctuating asymmetry were found in each sample. Directional asymmetry occurs in only four teeth in the Late Archaic sample and in two teeth in the Late Prehistoric sample. Neither sample exhibits the tendency for opposing arch dominance in directional asymmetry. Fluctuating asymmetry is significantly greater than measurement error for all teeth in each sample. However, contrary to expectations the Late Prehistoric maize agriculturists do not show an overall greater degree of fluctuating asymmetry compared to their forager ancestors. This result coupled with a survey of pathological conditions in these populations suggest that stress levels in Ohio Valley populations, at least that stress which affected dental developmental stability, were not drastically increased with the introduction of maize agriculture. Spearman correlations between relative tooth size variation (coefficient of variation), the magnitude of fluctuating dental asymmetry, and duration of time (per tooth) spent in soft tissue development were obtained for each sample. Coefficients of variation and fluctuating asymmetry are significantly correlated in both samples but fluctuating asymmetry is significantly correlated with duration of soft tissue development only in the Late Prehistoric population.

Toothed whales have evolved to communicate, forage, and navigate effectively underwater using sound. It is generally accepted that toothed whales receive sounds through their lower mandible and the associated fat body, which guide sound to the tympano-periotic complexes (TPCs) enclosing the cochleae. However, little is known about how the direction of an impinging sound wave affects acoustic interactions with these and other structures in the head to alter the signals driving the left and right TPCs. In this work, we constructed a three-dimensional head model using computed tomography (CT) images of a live bottlenose dolphin. Using a finite-element model to simulate sound-structure interactions, we computed how left and right TPC signals vary with sound direction for multiple frequencies to generate dolphin head-related transfer functions (HRTFs). The simulated HRTFs vary strongly with frequency. Importantly, HRTFs for sources off midline exhibit complex frequency-dependent differences, which are acoustic features that could be used to estimate sound source location. We also observed scenarios where interaural level differences (ILDs) may not be reliable directional cues. Results like these can identify which acoustic cues, at which frequencies, support robust directional hearing in toothed whales. [Work supported by ONR.]

The sonar capabilities of the sperm whale, Physeter macrocephalus, have been the subject of speculation for a long time. While the usual clicks of this species are considered to support mid-range echolocation, no physical characteristics of the signal have clearly confirmed this assumption nor have they explained how sperm whales forage on squid. The recent data on sperm whale on-axis recordings have allowed us to simulate the propagation of a 15 kHz pulse as well as its received echoes from different targets, taking into account the reflections from the bottom and the sea surface. The analysis was performed in a controlled environment where the oceanographic parameters and the acoustic background could be modified. We also conducted experimental measurements of cephalopod target strength (TS) (Loligo vulgaris and Sepia officinalis) to further investigate and confirm the TS predictions from the geometric scattering equations. Based on the results of the computer simulations and the TS experimental measurements (TS squid=−36.3±2.5 dB), we were able to determine the minimum requirements for sperm whale sonar, i.e. range and directional hearing, to locate a single 24.5 cm long squid, considered to be (from stomach contents) the major size component of the sperm whale diet. Here, we present the development of the analysis which confirms that sperm whale usual clicks are appropriate to serve a mid-range sonar function, allowing this species to forage on individual organisms with low sound-reflectivity at ranges of several hundreds of metres.

Timothy grass (Phleum pratense L.) is one of the most important forage crops in temperate regions. Forage production, however, faces many challenges, and new cultivars adapted to a changing climate are needed. Wild populations and relatives of timothy may serve as valuable genetic resources in the breeding of improved cultivars. The aim of our study is to provide knowledge about the phenotypic diversity in domesticated (cultivars, breeding lines and landraces) and wild timothy and two closely related species, P. nodosum (lowland species) and P. alpinum, (high altitude species) to identify potential genetic resources. A total of 244 accessions of timothy and the two related species were studied for growth (plant height, fresh and dry weight) and plant development (days to stem elongation, days to booting and days to heading) in the field and in a greenhouse. We found a large diversity in development and growth between the three Phleum species, as well as between the accessions within each species. Timothy showed the highest growth, but no significant difference was found between wild accessions and cultivars of timothy in fresh and dry weight. However, these two groups of accessions showed significant differences in plant development, where timothy cultivars as a group reached flowering earlier than the wild accessions. This suggests that there has not been a strong directional selection towards increased yield during the domestication and breeding of timothy; rather, timothy has been changed for other traits such as earlier heading. Principal component analysis and cluster analysis based on all traits revealed distinct clusters. Accessions falling within the same cluster showed similarities in the development and growth rather than the type of accession. The large diversity found in this study shows the potential of using timothy accessions as genetic resources in crosses with existing cultivars. Also, accessions of P. nodosum with favorable traits can be candidates for the domestication of a novel forage crop, and the high-altitude relative P. alpinum may be a source of genes for the development of more cold and stresstolerant cultivars.

David Ben-Gurion's attempt to forge a collective Israeli identity rooted in the biblical conquest myth adopted a bi-directional hermeneutic: biblical text and modern reality were mutually illuminating. While Ben-Gurion read Scripture ‘from above’, with the eyes of the IDF, Edward Said called for readings ‘from below’, with the eyes of the Canaanites. Following Said, this paper reads the Conquest narrative and the Nakba bi-directionally, tracing four themes: (1) Depopulation and dispossession, (2) Traitors and Tricksters, (3) Spoils of War, (4) Incomplete expulsion. The exercise cautions those who see both narratives as zero-sum games only one side of which merits moral consideration.

Horizontal directional drilling (HDD) is a non-invasive alternative to trenching used for the installation of many common utilities. The process involves drilling fluid used to stabilize the borehole, lubricate the bit, and float cuttings to the surface. A sustainable alternative to landfill disposal is land application. Two field studies were conducted to determine the optimum application rate of HDD residuals to both established bermudagrass and bare soil seeded with bermudagrass. Residuals were applied at six rates ranging from 0 to 112 tons solid ha−1 for both trials. Soils were sampled 7, 30, and 90 days after application. Saturated paste and Mehlich-3 extractions were performed on all samples. Grass biomass was measured at the end of the study. No significant amount of nutrients or trace metals were found in the treated soils. All concentrations were in the range of typical soils. However, total dissolved solids (TDS) and sodium absorption ratio (SAR) increased with application rate. There was no significant difference in the yields of forage harvested on the established grass plots 110 days after application. Bare plots that received 22 tons solid ha−1 had higher percent ground cover than other rates. It is ecologically safe to apply HDD residuals up to 112 tons and 90 tons solid ha−1 to established bermudagrass and bare soil, respectively.

Neural activity in several limbic areas varies as a function of the animal's head direction (HD) in the horizontal plane. Lesions of the vestibular periphery abolish this HD cell signal, suggesting an essential role for vestibular afference in HD signal generation. The organization of brain stem pathways conveying vestibular information to the HD circuit is poorly understood; however, recent anatomical work has identified the supragenual nucleus (SGN) as a putative relay. To test this hypothesis, we made lesions of the SGN in rats and screened for HD cells in the anterodorsal thalamus. In animals with complete bilateral lesions, the overall number of HD cells was significantly reduced relative to control animals. In animals with unilateral lesions of the SGN, directional activity was present, but the preferred firing directions of these cells were unstable and less influenced by the rotation of an environmental landmark. In addition, we found that preferred directions displayed large directional shifts when animals foraged for food in a darkened environment and when they were navigating from a familiar environment to a novel one, suggesting that the SGN plays a critical role in projecting essential self-motion (idiothetic) information to the HD cell circuit.

Specialists and generalists often coexist within a single population, but the biological drivers of individual strategies are not fully resolved. When sexes differ in their foraging strategy, this can lead them to different environmental conditions and stability across their habitat range. As such, sexual segregation, combined with dominance, may lead to varying levels of specialization between the sexes. Here, we examine spatial and temporal niche width (intraindividual variability in aspects of foraging behaviour) of male and female black-browed albatrosses ( Thalassarche melanophrys ), and its consequences for fitness. We show that females, where maximum foraging range is under fluctuating selection, exhibit more variable behaviours and appear more generalist than males, who are under directional selection to forage close to the colony. However within each sex, successful birds had a much narrower niche width across most behaviours, suggesting some specialization is adaptive in both sexes. These results demonstrate that while there are sex differences in niche width, the fitness benefit of specialization in spatial distribution is strong in this wide-ranging seabird.

AbstractWhen strong directional selection acts on a trait, the spatial distribution of phenotypes may reflect effects of selection, as well as the spread of favoured genotypes by gene flow. Here we investigate the relative impact of these factors by assessing resistance to synthetic pyrethroids in a 12-year study of diamondback moth, Plutella xylostella, from southern Australia. We estimated resistance levels in populations from brassicaceous weeds, canola, forage crops and vegetables. Differences in resistance among local populations sampled repeatedly were stable over several years. Levels were lowest in samples from weeds and highest in vegetables. Resistance in canola samples increased over time as insecticide use increased. There was no evidence that selection in one area influenced resistance in adjacent areas. Microsatellite variation from 13 populations showed a low level of genetic variation among populations, with an AMOVA indicating that population only accounted for 0.25% of the molecular variation. This compared to an estimate of 13.8% of variation accounted for by the resistance trait. Results suggest that local selection rather than gene flow of resistance alleles dictated variation in resistance across populations. Therefore, regional resistance management strategies may not limit resistance evolution.

In this study, a purity of 99.995percent high purity aluminum was multi-directionally forged up to a maximum cumulative strain of 4.5 at room temperature. The macro and micro structure evolution in the multi-directionally forge process was investigated by structure observations and hardness measurements. The results show that the inhomogeneous deformation of multi-directional forging results in that the structure and hardness is quite different between the easy deformation zone and stagnant zone. Dynamic recrystallization occurs in easy deformation zone of high purity aluminum sample at room temperature as the cumulative true strain is 1.5 (3 forging passes), while the structure in the stagnant zone is still not recrystallizated even at a cumulative true strain of 4.5 (9 forging passes). The recrystallized grain size in the easy deformation zone is reduced with the number of forging passes, and the area of recrystallize grains increase with the number of forging passes.

Predators often eavesdrop on sexual displays of their prey. These displays can provide multimodal cues that aid predators, but the benefits in attending to them should depend on the environmental sensory conditions under which they forage. We assessed whether bats hunting for frogs use multimodal cues to locate their prey and whether their use varies with ambient conditions. We used a robotic set-up mimicking the sexual display of a male túngara frog ( Physalaemus pustulosus ) to test prey assessment by fringe-lipped bats ( Trachops cirrhosus ). These predatory bats primarily use sound of the frog's call to find their prey, but the bats also use echolocation cues returning from the frog's dynamically moving vocal sac. In the first experiment, we show that multimodal cues affect attack behaviour: bats made narrower flank attack angles on multimodal trials compared with unimodal trials during which they could only rely on the sound of the frog. In the second experiment, we explored the bat's use of prey cues in an acoustically more complex environment. Túngara frogs often form mixed-species choruses with other frogs, including the hourglass frog ( Dendropsophus ebraccatus ). Using a multi-speaker set-up, we tested bat approaches and attacks on the robofrog under three different levels of acoustic complexity: no calling D. ebraccatus males, two calling D. ebraccatus males and five D. ebraccatus males. We found that bats are more directional in their approach to the robofrog when more D. ebraccatus males were calling. Thus, bats seemed to benefit more from multimodal cues when confronted with increased levels of acoustic complexity in their foraging environments. Our data have important consequences for our understanding of the evolution of multimodal sexual displays as they reveal how environmental conditions can alter the natural selection pressures acting on them.

The mining research license of Oume (PR105) is located in the Centerwest forestry of Côte d’Ivoire on Fettekro greenstone belt. This furrow belongs to the Proterozoic Birimian series of West Africa. This concession which is our study area, is sheltered by the Bonikro gold deposit, which was discovered by sampling the geochemical gold soil anomaly. All around the latter within a radius of about 15 km, ten prospects or targets were highlighted by the method of soil geochemistry. These targets or potential anomalies are currently undergoing intensive drilling to identify potential resources that could feed into Bonikro mine processing unit. It is in this perspective that the aim of this work is to locate new targets likely to contain gold indices from the use of synthetic opening radar satellite imagery. The fracturing map was obtained by applying directional filters from Sobel on the radar images (N-S, E-W, NESW and NW-SE) and Yesou gradient filter. The enhanced lineaments were extracted manually. The report of the lineament direction on the specific tools called “Rosace” showed five (5) preferential direction classes [N00 - N10], [N20 - N30], [N40 - N80], [N90 - N100] and [N120 - N140]. The analysis of the relationship between the lineaments map and geochemical signature map of the study area shows that the area is intensely fractured and describes an anomaly that overlap with coarsely elongated gold content along the Birimian formations direction. The study permitted to identify four (4) potential targets within Oume license.

The decoupling of control and forwarding layers brings Software-Defined Networking (SDN) the network programmability and global control capability, but it also poses SDN security risks. The adversaries can use the forwarding and control decoupling character of SDN to forge legitimate traffic, launching saturation attacks targeted at SDN switches. These attacks can cause the overflow of switch flow tables, thus making the switch cannot forward benign network traffic. How to effectively detect saturation attack is a research hotspot. There are only a few graph-based saturation attack detection methods. Meanwhile, the current graph generation methods may take useless or misleading information to the attack detection, thus decreasing the attack detection accuracy. To solve the above problems, this paper proposes TITAN, a bidirecTional forwardIng graph-based saturaTion Attack detectioN method. TITAN defines flow forwarding rules and topology information, and designs flow statistical features. Based on these definitions, TITAN generates nodes of the bi-forwarding graph based on the flow statistics features and edges of the bi-forwarding graph based on the network traffic routing paths. In this way, each traffic flow in the network is transformed into a bi-directional forwarding graph. Then TITAN feeds the above bidirectional forwarding graph into a Graph Convolutional Network (GCN) to detect whether the flow is a saturation attack flow. The experimental results show that TITAN can effectively detect saturation attacks in SDNs with a detection accuracy of more than 97%.

The desert ant Cataglyphis fortis inhabits the North African saltpans where it individually forages for dead arthropods. Homing ants rely mainly on path integration, i.e., the processing of directional information from a skylight compass and distance information from an odometer. Due to the far-reaching foraging runs, path integration is error-prone and guides the ants only to the vicinity of the nest, where the ants then use learned visual and olfactory cues to locate the inconspicuous nest entrance. The learning of odors associated with the nest entrance is well established. We furthermore know that foraging Cataglyphis use the food-derived necromone linoleic acid to pinpoint dead insects. Here we show that Cataglyphis in addition can learn the association of a given odor with food. After experiencing food crumbs that were spiked with an innately neutral odor, ants were strongly attracted by the same odor during their next foraging journey. We therefore explored the characteristics of the ants’ food-odor memory and identified pronounced differences from their memory for nest-associated odors. Nest odors are learned only after repeated learning trials and become ignored as soon as the ants do not experience them at the nest anymore. In contrast, ants learn food odors after a single experience, remember at least 14 consecutively learned food odors, and do so for the rest of their lives. As an ant experiences many food items during its lifetime, but only a single nest, differentially organized memories for both contexts might be adaptive.

An autonomous agent (animat, hypothetical animal), called the (archae) paddler, is simulated in sufficient detail to regard its simulated aquatic locomotion (paddling) as physically possible. The paddler is supposed to be a model of an animal that might exist, although it is perfectly possible to view it as a model of a robot that might be built. The agent is assumed to navigate in a simulated deep-sea environment, where it forages for autoluminescent prey. It uses a biologically inspired phototaxic foraging strategy, while paddling in a layer just above the bottom. The advantage of this living space is that the navigation problem—and hence our model—is essentially two-dimensional. Moreover, the deep-sea environment is physically simple (and hence easy to simulate): no significant currents, constant temperature, completely dark. A foraging performance metric is developed that circumvents the necessity to solve the traveling salesman problem. A parametric simulation study then quantifies the influence of habitat factors, such as the density of prey, and body geometry (e.g., placement, direction and directional selectivity of the eyes) on foraging success. Adequate performance proves to require a specific body geometry adapted to the habitat characteristics. In general, performance degrades gracefully for modest changes of the geometric and habitat parameters, indicating that we work in a stable region of “design space.” The parameters have to strike a compromise between, on the one hand, the ability to “fixate” an attractive target, and on the other hand, to “see” as many targets at the same time as possible. One important conclusion is that simple reflex-based navigation can be surprisingly efficient. Additionally, performance in a global task (foraging) depends strongly on local parameters such as visual direction tuning, position of the eyes and paddles, and so forth. Behavior and habitat “mold” the body, and the body geometry strongly influences performance. The resulting platform enables further testing of foraging strategies or vision and locomotion theories stemming either from biology or from robotics.

AbstractMany species, such as fish schools or bird flocks, rely on collective motion to forage, prey, or escape predators. Likewise, Myxococcus xanthus forages and moves collectively to prey and feed on other bacterial species. These activities require two distinct motility machines enabling adventurous (A) and social (S) gliding, however when and how these mechanisms are used has remained elusive. Here, we address this long-standing question by applying multiscale semantic cell tracking during predation. We show that: (1) foragers and swarms can comprise A- and S-motile cells, with single cells exchanging frequently between these groups; (2) A-motility is critical to ensure the directional movement of both foragers and swarms; (3) the combined action of A- and S-motile cells within swarms leads to increased predation efficiencies. These results challenge the notion that A- and S-motilities are exclusive to foragers and swarms, and show that these machines act synergistically to enhance predation efficiency.

Abstract In addition to foraging individually several species of ants guide nestmates to a goal by tandem running. We found that the Australian ant, Camponotus consobrinus, forages both individually and by tandem running to head to the same goal, nest-specific native Australian trees on which they forage. While paths of solitary foragers and initial paths of tandem followers showed no differences in heading directions or straightness, tandem followers moved at about half the speed of solitary runs. When leaders were experimentally removed, follower ants initially engaged in a systematic search around the point of interruption, following which they either (a) headed directly towards and successfully reached the foraging trees, or (b) continued searching or (c) returned to the nest. The high incidence of followers that successfully navigated towards the foraging trees on their own provides strong evidence that many tandem followers are in fact experienced foragers. Detailed analysis of the searching behaviour revealed that even seemingly lost followers displayed a directional bias towards the foraging trees in their search path. Our results show that in a foraging context follower ants in a tandem pair are not always naïve.

Abstract Background Over the past two decades, various species of forage fish have been successfully implanted with miniaturized acoustic transmitters and subsequently monitored using stationary acoustic receivers. When acoustic receivers are configured in an array, information related to fish direction can potentially be determined, depending upon the number and relative orientation of the acoustic receivers. However, it can be difficult to incorporate directional information into frequentist mark-recapture methods. Here we show how an empirical Bayesian approach can be used to develop a model that incorporates directional movement information into the Arnason-Schwarz modeling framework to describe survival and migration patterns of a Pacific herring (Clupea pallasii) population in coastal Alaska, USA. Methods We acoustic-tagged 326 adult Pacific herring during April 2017 and 2018 while on their spawning grounds in Prince William Sound Alaska, USA. To monitor their movements, stationary acoustic receivers were deployed at strategic locations throughout the Sound. Receivers located at the major entrances to the Gulf of Alaska were arranged in parallel arrays to determine the directional movements of the fish. Informative priors were used to incorporate the directional information recorded at the entrance arrays into the model. Results A seasonal migratory pattern was found at one of Prince William Sound’s major entrances to the Gulf of Alaska. At this entrance, fish tended to enter the Gulf of Alaska during spring and summer after spawning and return to Prince William Sound during the fall and winter. Fish mortality was higher during spring and summer than fall and winter in both Prince William Sound and the Gulf of Alaska. Conclusions An empirical Bayesian modeling approach can be used to extend the Arnason-Schwarz modeling framework to incorporate directional information from acoustic arrays to estimate survival and characterize the timing and direction of migratory movements of forage fish.

AbstractThe impacts of climate change on rural cultures and livelihoods depend on how the resulting complex biophysical processes may transform people’s land use practices. We argue that research can incorporate local concerns of compound hazards through deterministic rather than probabilistic approaches to better understand the multiple causations involved in such climate change impacts. We apply mixed methods within a storyline approach to examine how a forest reindeer herding community in Northern Sweden copes with and experiences basal ice formation on their winter pasturelands under the influence of climatic and environmental change. Our results show that the detrimental impact of basal ice formation on the availability of winter forage for reindeer is amplified by the directional effects of climate change and encroachments, especially particular forestry practices and their surrounding infrastructure. On the one hand, we show that policy action can address local concerns through ecological interventions that improve the amount and distribution of ground and pendulous lichens at the pastoral landscape scale. On the other hand, we show that policy inaction can threaten the community’s desired experience of human-animal relations in their landscape, which was inextricably connected to ecological conditions for natural pasture-based reindeer pastoralism.

Cholinergic pesticides, such as the neonicotinoid imidacloprid, are the most important insecticides used for plant protection worldwide. In recent decades, concerns have been raised about side effects on non-target insect species, including altered foraging behavior and navigation. Although pollinators rely on visual cues to forage and navigate their environment, the effects of neonicotinoids on visual processing have been largely overlooked. To test the effect of acute treatment with imidacloprid at known concentrations in the brain, we developed a modified electrophysiological setup that allows recordings of visually evoked responses while perfusing the brain in vivo. We obtained long-lasting recordings from direction selective wide-field, motion sensitive neurons of the hoverfly pollinator, Eristalis tenax. Neurons were treated with imidacloprid (3.9 μM, 0.39 μM or a sham control treatment using the solvent (dimethylsulfoxide) only. Exposure to a high, yet sub-lethal concentration of imidacloprid significantly alters their physiological response to motion stimuli. We observed a general effect of imidacloprid (3.9 μM) increasing spontaneous activity, reducing contrast sensitivity and giving weaker directional tuning to wide-field moving stimuli, with likely implications for errors in flight control, hovering and routing. Our electrophysiological approach reveals the robustness of the fly visual pathway against cholinergic perturbance (i.e., at 0.39 μM) but also potential threatening effects of cholinergic pesticides (i.e., evident at 3.9 μM) for the visual motion detecting system of an important pollinator.

Just like other complex biological features, image vision (multi-pixel light sensing) did not evolve suddenly. Animal visual systems have a long prehistory of non-imaging light sensitivity. The first spatial vision was likely very crude with only few pixels, and evolved to improve orientation behaviors previously supported by single-channel directional photoreception. The origin of image vision was simply a switch from single to multiple spatial channels, which improved the behaviors for finding a suitable habitat and position itself within it. Orientation based on spatial vision obviously involves active guidance of behaviors but, by necessity, also assessment of habitat suitability and environmental conditions. These conditions are crucial for deciding when to forage, reproduce, seek shelter, rest, etc. When spatial resolution became good enough to see other animals and interact with them, a whole range of new visual roles emerged: pursuit, escape, communication and other interactions. All these new visual roles require entirely new types of visual processing. Objects needed to be separated from the background, identified and classified to make the correct choice of interaction. Object detection and identification can be used actively to guide behaviors but of course also to assess the over-all situation. Visual roles can thus be classified as either ancient non-object-based tasks, or object vision. Each of these two categories can also be further divided into active visual tasks and visual assessment tasks. This generates four major categories of vision into which I propose that all visual roles can be categorized.

Banderita (<em>Bouteloua curtipendula</em>), produces abundant and appetizing forage for cattle under extreme arid conditions. The demand for its seed in Mexico is a direct function of the potential for the establishment of pastures and therefore, the sanitary quality of this is fundamental. Phytopathogenic fungi affect the seed and establishment of prairies. The objective was to evaluate<em> in vitro</em> the effect of six agrochemicals and one biological against fungi associated with Banderita seed, to reduce losses caused by these. Treatments were carried out in PDA culture medium combined with Captan, Thiophanate-methyl, Mancozeb, Benomil, Prochloraz, Thiabendazole and <em>Bacillus subtilis</em> at concentrations according to the case of 0 (control), 0.005, 0.001, 0.05, 0.01, 0.5, 0.1, 1.5, 10, 100, 150, 200, 250 and 300 mg L-1, against <em>Alternaria alternata</em>, <em>Bipolaris cynodontis</em> and <em>Fusarium incarnatum</em>. The bi-directional colony diameter was measured every 48 h. The effective concentration of 50% was estimated by a non-linear regression model; in relation to the percentage of inhibition of mycelial growth. <em>Bacillus subtilis</em> presented higher mycelial inhibition 97% (P &lt;0.05), followed by Thiophanate-methyl (96%), Prochloraz (94%), Captan (93%) and Mancozeb (92%). Benomyl and Thiabendazole showed low inhibition of fungi with 46 and 37%.<em> B. subtilis</em> and Thiophanate-methyl are the products with the greatest possibility of controlling pathogens associated with Banderita grass seeds.

Abstract Diurnal flight activity in otherwise strictly nocturnal bats has typically been linked to random disturbance from day roosts, an urgent need to balance food shortage caused by adverse weather during nighttime, or the absence of diurnal predators. However, migration may be another reason why bats fly during daylight, at least in some areas. Using community-science data collection, we obtained more than 500 records of over 15,000 bats displaying diurnal flight activity, suggesting that it is relatively common in Central Europe. The vast majority of sightings were of common noctules (Nyctalus noctula), with most records concentrated in spring and autumn. The seasonal dynamics of diurnal flights exactly coincided with migratory periods, and directional movements in autumn—when diurnal activity was most frequent and included highest numbers of observed bats—suggest that the behavior may ultimately be linked to migration ecology. The highest frequency of diurnal flights in autumn coincided with highest body mass in the studied territory, thereby refuting the hypothesis of early roost emergence due to poor body condition or decreased predation risk related to increased maneuverability. A shift from strictly nocturnal to partly diurnal activity may balance increased energetic demands imposed by migration, which is temporally synchronized with periods of cold nights when prey density is limited. Common noctule diurnal activity during the migratory period may be beneficial as they can acquire energy by foraging on daily abundant prey while saving nighttime for long endurance flights—alternatively, they may forage on the way to their migratory destination, thereby saving time. Predation risk from diurnal predators may be significantly decreased by choosing high flight altitudes, as observed particularly during autumn. We suggest that observations on the geographic distribution of diurnally flying noctules may help identify migration corridors.

We begin resolution of the Tetrabothrius jagerskioeldi–species complex with descriptions of Tetrabothrius alcae n. sp. based on numerous specimens, primarily in murres (species of Uria), from the greater North Pacific basin and Tetrabothrius sinistralis n. sp. based on cestodes in guillemots (species of Cepphus) from the central Bering Sea and West Greenland. These tetrabothriids are characterized, among 44 species of Tetrabothrius in avian hosts, by attributes of the scolex, male and female organ systems, structure and dimensions of the vitelline gland, numbers of testes, configuration of the genital atrium, genital papillae and the male and female atrial canals, position of the genital ducts relative to the poral osmoregulatory canals, structure, dimensions and position of the vaginal seminal receptacle, and dimensions of the embryophore and oncosphere, in addition to a broader array of characters. Remarkably, T. alcae, T. sinistralis, and a cryptic complex had remained unrecognized for the past century, given that these species are unequivocally differentiated by multiple suites of unique structural attributes relative to T. jagerskioeldi. Alcids and cestodes of the T. jagerskioeldi–complex are restricted to cold marine systems of advection and upwelling along coastal margins adjacent to the continental shelf or are associated with archipelagos (especially the Aleutian Arc), isolated islands and rocky headlands of the Bering Sea, Chukchi Sea, Gulf of Alaska, Sea of Okhotsk, and Sea of Japan. Tetrabothrius alcae, T. jagerskioeldi, and T. sinistralis may occur in sympatry but with minimal overlap in the faunas associated with murres (Alcini) and guillemots (Cepphini). Transmission for cestodes and persistence of this fauna is expected to be associated with pelagic and neritic systems adjacent to colony sites in zones where critical prey species are concentrated or secondarily dispersed downstream by predictable advective and upwelling processes and become available to foraging birds. Faunal assembly represents the outcomes of oscillating climate, shifting ranges (breakdown in isolation, ecological fitting, and exploration modes for cestodes) and the changing interfaces for resource availability maintained by trophic and habitat overlaps. Dynamics at these ecotones constitute the nexus of opportunity and capacity for infection by species of Tetrabothrius among avian hosts where capacity appears broad and opportunity is ecologically restricted in space and prevatime. Life history pathways for cestodes are tied to trophic associations and dynamics at mesoscales across marine domains and provinces. Resilience and connectivity through ecological fitting strongly suggest the influence of multiple trophic pathways for transmission and persistence of this complex fauna through differing assemblages of zooplankters, fishes, and cephalopods depending on locality, oceanographic conditions, and temporal variability. Changing conditions, especially ecological perturbations driven by climate oscillations, directly determine production cycles and distributions of micro- and macro-zooplankton, forage fishes, cephalopods, and trophic structure in high-latitude marine ecosystems. Expanding regimes of accelerating change emphasize the critical importance of field collections, archives, and baselines to assess biological outcomes across temporal and spatial scales. Parasite assemblages reveal macro- to meso-scale connectivity serving as adjuncts and proxies in recognizing and understanding outcomes for episodes of environmental oscillation and directional atmospheric and oceanic warming in marine ecosystems.

A young woman in bikini bottoms and a vest top scrunched up to just below her breasts stands facing the camera. Behind her lies the neatened clutter of domestic space with family photographs arranged next to a fish tank. As this gently buzzes in its fluorescent pool of light, she begins to speak: I’ve just finished eating my McDonald’s meal, which was one of the new quarter pounders with the bacon and the cheese and ten nuggets and a large fries but I have not finished my drink. Pausing to hold up her drink to the camera, she shakes the takeaway cup to assess how much remains inside. With her other hand she gently pats her uncovered stomach, saying: I’m feeling very full and very tight on the top… very very tight like, here and here too… like a drum …Very full! But I know that I can probably fit more with liquids so I’m going to top it off with the rest of this drink and them I’m going to fill in all the spaces with the rest of the drink. After drinking the Dr Pepper before the screen fades to black, she says: I think next time I gotta get the double quarter pounder. I probably could take it, I could probably take on that double quarter pounder with the nuggets. So I’ll have to try that next time for you guys. This video on You Tube is one of many on the Internet labelled BBW, which stands for Big Beautiful Woman. This term dates back to the 1979 launch of BBW Magazine, a fashion and lifestyle magazine for women. As it was then, BBW is also used within spaces of size acceptance, such as among the women participating in Alexandra Lescaze’s documentary All of Me, which charts the lives of friends who met through the National Association to Advance Fat Acceptance. In such spaces, as on Internet blogs and discussion pages, BBW is employed to assert the desirability, rather than abjection, of a fat female body; it thereby counters the “stigma that still is associated with being a large person in a small society” as one of the women in All of Me, Dawn, puts it. BBW is also a term that features frequently in ‘fat forums’. These are adult content cyberspaces for, as one homepage states, “plus size models and their admirers.” Alongside these, there is also a genre of BBW pornography in which sexually explicit activity takes place. This is found on dedicated websites as well as in sub-sections of more ‘mainstream’ porn sites. In these latter the videos that feature BBWs are often labelled “fat fetish.” Against this background, this article draws on content analysis conducted between 2013 and 2015 of forty videos posted on You Tube by women who self-identify as fat (see Longhurst) and, specifically, as BBWs. In particular, it focuses on videos to which eating is central. In these, eating is either performed on camera or has taken place just before filming began. In the latter instance eating and its bodily resonances are visible in two ways: the BBW might describe the meal just eaten or her feeling of fullness, or there may be a textual description such as “after a big mac.” These videos have so far received little scholarly attention other than through a lens of sex, as enactments of “fat pornography” (cf. Kulick). Yet, analysing them as porn risks privileging an imagised rather than lived body and implicitly engaging only with a spectator’s viewpoint. It thereby potentially repeats the power dynamics it seeks to interrogate. This article instead suggests that there are key distinctions between these videos and porn. Although a discussion of gender and sexuality is precluded by limited space, focusing on eating offers a way to unpick this analytic conflation whilst also recognising how wider entanglements among sex, power and fat may texture the videos. As such, whilst being careful not to reduce the BBWs in these videos to no more than eating bodies, this focus seeks primarily to pay attention to their agency and embodiment. Drawing on literature that has critically engaged with fat from a variety of perspectives (cf. Evans Braziel and LeBesco; Forth and Leitch; Rothblum and Solovay), this discussion is particularly shaped by recent work that has sought to take account of lived experiences of moving through and encountering the world with a fat female body (cf. Murray; Tischner). In order to think through this, the article reflects on the Internet as a space not only of visuality, but also of viscerality. Defined by Robyn Longhurst et al. as “the sensations, moods and ways of being that emerge from our sensory engagement with the material and discursive environments in which we live” (334), viscerality has been argued to be a way in which to reflect on identity and power by paying attention to the materiality of everyday experiences (Hayes-Conroy and Hayes-Conroy, taste and visceral). It attends to the simultaneity of politics and intimacy as social relations are forged “at the level of the guts” (Probyn 1). In turn, recent attention to eating has suggested this to be an act that forges social connections at myriad scales (see Abbots and Lavis) as people, places and objects are brought into encounter by ingestion and digestion. An attention to what eating is and does in these videos therefore recognises power dynamics between BBWs and viewing Others, whilst also not taking these to preclude other modalities of agency. It elucidates the co-production of bodily materialities and lived experiences, whilst also tracing the multi-directional slippages between consuming and becoming the Other. Engaging with affects and socialities set in motion by eating offers up a vision of this as an act that may be shared among bodies in ways at once disembodied but visceral. Visuality The homepage of a pornographic website describing itself as “the home of BBWs” suggests that the viewer click on links to see women diving into the kinkiest fetishes and activities you’d ever want to see BBWs do! From face-sitting and squashing, to eating anything and everything, these big fat chicks do it. It goes on to state that “these girls are massive, like their stomachs and appetites” and, illustrating assumptions regarding whose gaze is turned on this page, that “your dick won’t know what to do with itself!” The juxtaposition of the seemingly mundane, and also individual, activity of eating with overtly sexual and corporeally social activities such as face-sitting, suggests that to think through BBW videos focused on eating and trace their divergences from porn, we perhaps first need to attend to this wider landscape in which eating features as “kinky fetish”; it involves recognising intersections as well as disconnects. An undercurrent of sex does resonate through some of the eating videos posted on You Tube by BBWs. Although women are clothed and no sexual activity takes place, many of the titles contain the words “sexy BBW.” Likewise, the language used by participants to talk about their bodies during or after eating is often sexually inflected. Just as the BBW above said of her Dr Pepper that she could “take it,” others talk of being “filled” in a way that folds food into an imaginary of penetrative sex. Bodily boundaries are also shown to be porous in further ways as fat is described as “bursting out of trousers.” A woman eating ice cream directs the camera downwards, saying, “look at that, my underwear’s rolling right down […] my tummy cannot be contained anymore.” Furthermore, to shift our analytic positioning for a moment, it is clear that the BBWs in these videos are regarded as sexually desirable by viewers. A You Tube video in which a woman eats a burger is accompanied by a viewer’s comment: Hello beautiful, I wish that I was there so I could do the fondling and caressing of your beautiful, fat belly while you just concentrated on eating your food. This contrasts to other viewers whose derogatory comments range from the denigrating “you are so ugly and disgusting” to the rather less articulate “eww.” These clearly highlight the “derision and even repulsion” (Lupton 3. See also Cain et al., Erdman Farrell) often directed at, especially female, fat. In contrast, by establishing a fat female – and indeed eating – body as desirable, these videos instead denote themselves as spaces of fat acceptance. Self-identified BBW and adult actress April Flores links her work in porn films to a wider politics of fat acceptance, saying: I want to have my work be a catalyst for change in people seeing fat women as sexual beings. Because we are, and we're not viewed that way. Right now, fat women are relegated to being the punch line and I want my work to change that. (Flores quoted in Wischhover) Flores would seem to articulate a neoliberal narrative of pornography as female empowerment (see Gill) here and it is important to recognise the connections between this and a wider context of disempowerment and stigma. Yet, the power dynamics of gaining social and sexual acceptance through a desiring gaze are also problematic. They highlight, as Rachel Colls puts it, “what the risks are for fat, female bodies and a re-framing of fatness more generally when designating acceptance according to a particular space and to ‘an’ admiring audience” (19). This links the pornographic works of April Flores with the eating videos that are the focus of this article. In both spaces, being visually consumed by an Other is invested with the power to circumscribe one’s own body as acceptable. In one video, a woman who has just finished eating pulls up her top to show her belly. Looking directly into the camera, she asks “do you like that?” A well-known self-described BBW, Donna Simpson, has poignantly written about her decision to shut down her website after years of charging 19 dollars a month to watch her eat (Simpson). She states that “the bottom line is that it was a fantasy created for men […] It’s about control” (quoted in Rose). One way in which control manifested was in how largely-male members of her website not only watched her eat but also directed this, circumscribing what she did and did not put into her own body. Although the financial transaction of the membership fee underpinned this access to Donna Simpson by offering the possibility of one-on-one video chats, there is some similar interaction afforded by the comments posted in response to the eating videos on You Tube. Beneath a video of a woman eating cake, one viewer has written “you’re adorable” to which the BBW herself has replied “you're sweet! thank you.” As such, accompanying these videos there are many requests from viewers centred on eating and food, along the lines of “eat this for me.” These are sometimes responded to in follow-up videos or with links to a paying website like Donna Simpson’s. Such requests demonstrate diverse self-positionings on the part of viewers; the more overtly sexual, such as “eat me” and “I wish to be that cake,” are joined by the expression of desire to be close to the BBW: Wow you are one big sexy fatty with a Huge Blubber Belly!! that thing is soo sexy. I would kill to see you waddling to the buffet bar with your fat jiggling and leading the way. But, to more explicitly address the problematic dynamics of power that have resonated through this discussion so far, these comments are commonly joined by a desire to feed the woman in the video. One viewer writes, “I’d love to get a huge funnel and tube and pour gallons upon gallons of beer down your throat and watch your belly expand!!” These words (at least seek to) intervene in and shape the body of the BBW to whom they are directed. It has been suggested that food “and its relations to bodies is fundamentally about power” (Goody 37) and directions to “eat an éclair for me,” for example, draw forth the power dynamics here by illustrating the co-production of corporeal materialities; the BBWs’ body fat is (at least to a certain extent) made and mediated by viewers. Moreover, in this process, some viewers not only position themselves as feeders but also assume the existence of a feeder off-camera, thereby framing the woman’s eating as always directed by an Other rather than autonomous. This aligns these videos with a wider context of feederism (see Giovanelli and Peluso) and this is sometimes made explicit; beneath one video, a viewer writes somewhat aggressively “your feeder's nice with you, you'd be twice that size with me.” The first half of this article has recognised the setting of these videos within a wider cyber-landscape of porn/power/fat/stigma entanglements. Yet, to suggest that although “the single most striking thing about this genre of pornography is that the women who are pictured do not engage in sex” (Kulick 79) and argue that they instead “have food” (79) reveals the problem with calling them porn and ending our analysis there. It defines the videos, and thus the women in them, through that which is absent, swapping sex for food. This risks repeating in analysis “the kind of harmful behavior in which men reduce fat women to sexual objects” (Saguy 553) by implicitly aligning with the viewer. To avoid this necessitates engaging with the BBWs themselves, their modes of embodiment and lived materialities. As Don Kulick notes, “most of the camera work is focused on their stomachs” (79) and it is here that such an engagement begins. Viscerality Reclaiming the ubiquitous imagery of “headless fatties” (Cooper) in media discussions of obesity, one video begins with a full-screen shot of a woman’s stomach. The camera pans to reveal a box of chocolates balanced on her lap and a hand reaches down to take one. Over the next three wordless minutes, as her fingers move between half-glimpsed chocolate box and unseen mouth, the woman rubs her belly with her other hand, folding and kneading her fat before letting it tumble onto her thighs. In other videos BBWs hold their stomachs to the camera to show how “full of food,” as one woman puts it, these are. Others adjust their position, clothing and webcams to enable a better view of their stomachs, or as they are more habitually called, their “bellies.” Rather than read this focus simply as a fetishisation of dislocated body parts, which echoes pornography, here bellies take on significance precisely because they are the “site of incorporation” (Carden-Coyne and Forth 1); they are indexical of eating. Momentarily altering our viewpoint to elucidate this, on the comment board of another video a viewer has simply written “digestion yeah!” Bellies, thus, gain meaning from eating rather than the other way around. This shift from visuality to viscerality draws us back to the viewpoint of the BBWs; their agency, pleasure and lived materiality is brought literally into the line of the camera. In another video, a woman rubs her belly sensuously. To elucidate the contours of this embodied performance, the video’s tagline reads: A family size lasagne a double milkshake a pound of butter melted in mash potatoes with a can of cheese for lunch wait till i get finished stuffing myself becoming fat is the ultimate pleasure. This woman is not alone in asserting the pleasure of becoming fat. Juxtaposed with articulations of the pleasures of food, together these statements suggest that eating on camera is not so much directed outwards to a desiring gaze. Rather, it is turned inwards as women look down at their bodies, roll food around their mouths and lick their fingers. A video in which a woman eats in her parked car begins: Okay, for lunch I’ve got some fried chicken; it’s two pieces with fries, and there’s lots of ketchup here… I also got a gravy and a macaroni salad to go with it… on yeah and I did pay an extra dollar for an extra piece of chicken so it’s three pieces of chicken. Here the BBW’s eating and its pleasures map the space of this video as closed. Yet her simultaneous narration also opens up this savoured moment of ingestion to a listening and viewing Other. This suggests that it may be not so much bodies that are shared or desired in these videos (as they are in pornography, perhaps), but rather the act of eating itself; these spaces invoke a “mimetic desire” (Girard) to be in this food-consuming moment. In another video a woman talks the viewer through the various flavours of cotton candy in her hand before deciding to try the pink vanilla. After taking a bite she offers this to the camera, saying, “you can eat that part […] does it melt on your tongue?” Although the sharing of eating is verbally articulated here, there are many other instances in which this is less explicit but also present, as visceral viewing becomes a moment of eating from afar (Lavis). That viewers often leave comments such as “I can taste that burger” suggests that these videos engender “vicarious consumption” (Kirkwood) that may be a form of eating as affective as taking food into the mouth. As such, here we glimpse the multi-directional flows of agency, affect and sociality engendered by eating. Recent explorations of eating bodies have seen these as entangled in myriad social and material relations. By engaging with eating as instigating encounters between bodies and worlds, this work has thereby argued that “in the act of placing food in the mouth, landscapes, people, objects and imaginings not only juxtapose with and fold into one another, but are also reconstituted and reordered” (Abbots and Lavis 5. See also Probyn). Against this background, “vicarious consumption” (Kirkwood) offered by these videos folds the bodies of viewer and viewed together to reconfigure taken-for-granted notions of outsides and insides, eater and eaten. Visceral viewing as embodied consumption recognises eating as an act that may be shared and thereby take place among many bodies at once. It has been suggested that an attention to viscerality engages with “contextualized and interactive versions of the self and other” (Hayes-Conroy and Hayes-Conroy, visceral, 1273). As such, as consuming the Other slip-slides into becoming Other through mimetic eating, it is now viewers’ bodily materialities that are affected and reshaped; their hungering, salivating bodies are mediated by the BBWs’ moments of eating. In this reversal, our sense of the power dynamics of these videos shifts. As eating becomes shared and contingently and dynamically distributed across bodies, power too is dissipated between the actors that perhaps co-produce these (eating) spaces and bodies. Thus, these videos offer participants on both side of the lens the possibility of being caught up in affective flows, whilst also being “articulating subjects” (Probyn 17) who “reforge new meanings, new identities” (17) through eating. Conclusion By engaging with videos in which self-identified Big Beautiful Women eat online, this article has reflected on the diverse imaginings, socialities and flows of power that texture these spaces. Paying attention to eating has afforded an alternative view of these videos, challenging a pornographic reading by recognising other intimacies and affective connections. As such, this discussion has sought to re-prioritise the experiences and agency of the BBWs in the videos themselves, whilst also interrogating how their bodies may be patrolled and even produced by the gaze of Others. Thus, whilst being careful not to reduce the BBWs to no more than food – “dehumanised as symbols of cultural fear: the body, the belly, the arse, food” as Charlotte Cooper puts it - an attention to eating has responded to her suggestion to “try to get a hold of their humanity” in analysis. This article therefore set out to explore how a visceral attention might forge a more nuanced understanding of these videos. Yet, in so doing, it has also become clear that they inform wider theorisations of eating. Thinking through what eating is and where its boundaries lie in these spaces has illustrated that this is an act that may take diverse forms and be shared among bodies that are spatially and temporally apart. That the visceral viewing of an Other’s ingestion and digestion may itself be a form of eating offers a novel way to think through contingent and affective connections among foods, bodies and persons. References Abbots, Emma-Jayne, and Anna Lavis (eds.) 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