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Journal articles on the topic 'Life-history omnivore'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Bryndová, Michala, Daniel Stec, Ralph O. Schill, Łukasz Michalczyk, and Miloslav Devetter. "Dietary preferences and diet effects on life-history traits of tardigrades." Zoological Journal of the Linnean Society 188, no. 3 (January 17, 2020): 865–77. http://dx.doi.org/10.1093/zoolinnean/zlz146.

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Abstract Tardigrades may be divided into the following feeding groups: herbivores, carnivores and omnivores. However, little is known about their specific feeding preferences. Here, we used a number of laboratory experiments with 18 potential food sources, representing a wide variety of organisms, to test feeding preferences, survival and fecundity of three tardigrade species, representing different feeding modes. We also tested for differences in preferences between juveniles and adults, and differences in survival between two age groups: one that started the experiment as juveniles and the o

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2

Irons III, John G. "Life history patterns and trophic ecology of Trichoptera in two Alaskan (U.S.A.) subarctic streams." Canadian Journal of Zoology 66, no. 6 (June 1, 1988): 1258–65. http://dx.doi.org/10.1139/z88-184.

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Monument Creek and West Fork, two interior Alaskan streams that are tributaries of the Chena River, are characterized by low water temperatures, low allochthonous input and periphyton biomass, and lengthy ice cover. Nine species of Trichoptera were found: Rhyacophila vofixa (Rhyacophilidae), Glossosoma verdona, Glossosoma alascense (Glossosomatidae), Brachycentrus americanus (Brachycentridae), Hydatophylax variabilis, Ecclisomyia conspersa, Onocosmoecus unicolor, Chyranda centralis, and Apatania crymophila (Limnephilidae). There were four shredders, three scrapers, one omnivore, and one predat

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3

Tyler, P. A., D. S. M. Billett, and J. D. Gage. "Seasonal reproduction in the seastar Dytaster grandis from 4000 m in the north-east Atlantic Ocean." Journal of the Marine Biological Association of the United Kingdom 70, no. 1 (February 1990): 173–80. http://dx.doi.org/10.1017/s0025315400034299.

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Examination of the reproductive biology of the abyssal seastar Dytaster grandis taken at different times of the year in the NE Atlantic suggests seasonal reproduction that is related to the seasonal pulse of phytodetritus to the deep-sea floor. Although this seastar is an omnivore, the availability of this labile organic material may fuel vitellogenesis during the summer and autumn months. The egg size suggests planktotrophic larval development. Spawning occurs in the early part of each year to allow the zygote to develop into a feeding larva to coincide with the downward flux of phytodetritus

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4

Jonsson, M., S. D. Wratten, K. A. Robinson, and S. A. Sam. "The impact of floral resources and omnivory on a four trophic level food web." Bulletin of Entomological Research 99, no. 3 (December 9, 2008): 275–85. http://dx.doi.org/10.1017/s0007485308006275.

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AbstractOmnivory is common among arthropods, but little is known about how availability of plant resources and prey affects interactions between species operating at the third and fourth trophic level. We used laboratory and field cage experiments to investigate how the provision of flowers affects an omnivorous lacewing, Micromus tasmaniae (Hemerobiidae) and its parasitoid Anacharis zealandica (Figitidae). The adult lacewing is a true omnivore that feeds on both floral resources and aphids, whereas the parasitoid is a life-history omnivore, feeding on lacewing larvae in the larval stage and f

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de la Serna Buzon, Sofia M., Ryan A. Martin, and David W. Pfennig. "Carryover effects and the evolution of polyphenism." Biological Journal of the Linnean Society 131, no. 3 (September 9, 2020): 622–31. http://dx.doi.org/10.1093/biolinnean/blaa133.

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Abstract An individual’s early-life environment and phenotype often influence its traits and performance as an adult. We investigated whether such ‘carryover effects’ are associated with alternative, environmentally-induced phenotypes (‘polyphenism’), and, if so, whether they influence the evolution of polyphenism. To do so, we studied Mexican spadefoot toads, Spea multiplicata, which have evolved a polyphenism consisting of two, dramatically different forms: a carnivore morph and an omnivore morph. We sampled both morphs from a fast-drying and a slow-drying pond and reared them to sexual matu

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Falk-Petersen, Jannike, Paul Renaud, and Natalia Anisimova. "Establishment and ecosystem effects of the alien invasive red king crab (Paralithodes camtschaticus) in the Barents Sea–a review." ICES Journal of Marine Science 68, no. 3 (January 12, 2011): 479–88. http://dx.doi.org/10.1093/icesjms/fsq192.

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Abstract Falk-Petersen, J., Renaud, P., and Anisimova, N. 2011. Establishment and ecosystem effects of the alien invasive red king crab (Paralithodes camtschaticus) in the Barents Sea – a review. – ICES Journal of Marine Science, 68: . Since its introduction to the Barents Sea from the North Pacific in the 1960s, the red king crab (Paralithodes camtschaticus) has become invasive. The crab represents an important source of income, but also a potential threat to the highly productive fisheries in the region through its ecosystem impacts. A literature review was conducted, identifying factors con

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7

van de Wolfshaar, de Roos, and Persson. "Size-Dependent Interactions Inhibit Coexistence in Intraguild Predation Systems with Life-History Omnivory." American Naturalist 168, no. 1 (2006): 62. http://dx.doi.org/10.2307/3844676.

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van de Wolfshaar, K. E., A. M. de Roos, and L. Persson. "Size‐Dependent Interactions Inhibit Coexistence in Intraguild Predation Systems with Life‐History Omnivory." American Naturalist 168, no. 1 (July 2006): 62–75. http://dx.doi.org/10.1086/505156.

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9

Hin, Vincent, and André M. Roos. "Cannibalism prevents evolutionary suicide of ontogenetic omnivores in life‐history intraguild predation systems." Ecology and Evolution 9, no. 7 (February 27, 2019): 3807–22. http://dx.doi.org/10.1002/ece3.5004.

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10

Abrams, Peter A. "Simple Life-History Omnivory: Responses to Enrichment and Harvesting in Systems with Intraguild Predation." American Naturalist 178, no. 3 (September 2011): 305–19. http://dx.doi.org/10.1086/661243.

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11

Branstrator, Donn K., Gilbert Cabana, Asit Mazumder, and Joseph B. Rasmussen. "Measuring life-history omnivory in the opossum shrimp, Mysis relicta, with stable nitrogen isotopes." Limnology and Oceanography 45, no. 2 (March 2000): 463–67. http://dx.doi.org/10.4319/lo.2000.45.2.0463.

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12

Wu, Jiaqi, Takahiro Yonezawa, and Hirohisa Kishino. "Evolution of Reproductive Life History in Mammals and the Associated Change of Functional Constraints." Genes 12, no. 5 (May 14, 2021): 740. http://dx.doi.org/10.3390/genes12050740.

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Phylogenetic trees based on multiple genomic loci enable us to estimate the evolution of functional constraints that operate on genes based on lineage-specific fluctuation of the evolutionary rate at particular gene loci, “gene–branch interactions”. Using this information as predictors, our previous work inferred that the common ancestor of placental mammals was nocturnal, insectivorous, solitary, and bred seasonally. Here, we added seven new continuous traits including lifespan, bodyweight, and five reproduction-related traits and inferred the coevolution network of 14 core life history trait

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13

Bondar, Carin A., K. Bottriell, K. Zeron, and John S. Richardson. "Does trophic position of the omnivorous signal crayfish (Pacifastacus leniusculus) in a stream food web vary with life history stage or density?" Canadian Journal of Fisheries and Aquatic Sciences 62, no. 11 (November 1, 2005): 2632–39. http://dx.doi.org/10.1139/f05-167.

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Food mixing behavior of omnivorous consumers can be difficult to predict. We undertook an enclosure experiment to explore the effects of ontogenetic stage and density on food choices of the omnivorous signal crayfish, Pacifastacus leniusculus. Juvenile or adult crayfish were placed in in-stream enclosures for 6 weeks at three different densities. Gut and stable isotope analyses were used to determine the food sources utilized by these organisms. In addition, we analyzed the guts of both adult and juvenile crayfish from outside the enclosures to account for experimental effects. We found few di

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Moya-Laraño, Jordi. "Genetic variation, predator–prey interactions and food web structure." Philosophical Transactions of the Royal Society B: Biological Sciences 366, no. 1569 (May 12, 2011): 1425–37. http://dx.doi.org/10.1098/rstb.2010.0241.

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Food webs are networks of species that feed on each other. The role that within-population phenotypic and genetic variation plays in food web structure is largely unknown. Here, I show via simulation how variation in two key traits, growth rates and phenology, by influencing the variability of body sizes present through time, can potentially affect several structural parameters in the direction of enhancing food web persistence: increased connectance, decreased interaction strengths, increased variation among interaction strengths and increased degree of omnivory. I discuss other relevant trai

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15

Walter, David Evans, and Evert E. Lindquist. "Life history and behavior of mites in the genus Lasioseius (Acari: Mesostigmata: Ascidae) from grassland soils in Colorado, with taxonomic notes and description of a new species." Canadian Journal of Zoology 67, no. 11 (November 1, 1989): 2797–813. http://dx.doi.org/10.1139/z89-396.

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Lasioseius berlesei (Oudemans), Lasioseius youcefi Athias-Henriot, Lasioseius kinikinik n.sp., and Lasioseius confusus Evans were collected from grassland soils in Colorado. Lasioseius berlesei and L. youcefi are known only from the female, and for the first time in an ascid mite, we experimentally demonstrate that they reproduce by thelytokous parthenogenesis. Both species are omnivores that will feed on fungi and animal prey, and they share a multidenticulate ridge apposed to a groove on the paraxial faces of the chelicerae which appears to function as a mashing and filtering mechanism durin

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16

Burivalova, Zuzana, Tien Ming Lee, Xingli Giam, Çağan Hakkı Şekercioğlu, David S. Wilcove, and Lian Pin Koh. "Avian responses to selective logging shaped by species traits and logging practices." Proceedings of the Royal Society B: Biological Sciences 282, no. 1808 (June 7, 2015): 20150164. http://dx.doi.org/10.1098/rspb.2015.0164.

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Selective logging is one of the most common forms of forest use in the tropics. Although the effects of selective logging on biodiversity have been widely studied, there is little agreement on the relationship between life-history traits and tolerance to logging. In this study, we assessed how species traits and logging practices combine to determine species responses to selective logging, based on over 4000 observations of the responses of nearly 1000 bird species to selective logging across the tropics. Our analysis shows that species traits, such as feeding group and body mass, and logging

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17

Kenmotsu, Harutaro, Masahiro Ishikawa, Tomokazu Nitta, Yuu Hirose, and Toshihiko Eki. "Distinct community structures of soil nematodes from three ecologically different sites revealed by high-throughput amplicon sequencing of four 18S ribosomal RNA gene regions." PLOS ONE 16, no. 4 (April 15, 2021): e0249571. http://dx.doi.org/10.1371/journal.pone.0249571.

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Quantitative taxonomic compositions of nematode communities help to assess soil environments due to their rich abundance and various feeding habitats. DNA metabarcoding by the 18S ribosomal RNA gene (SSU) regions were preferentially used for analyses of soil nematode communities, but the optimal regions for high-throughput amplicon sequencing have not previously been well investigated. In this work, we performed Illumina-based amplicon sequencing of four SSU regions (regions 1–4) to identify suitable regions for nematode metabarcoding using the taxonomic structures of nematodes from uncultivat

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18

Joshi, Anup R., James LD Smith, and David L. Garshelis. "Sociobiology of the myrmecophagous sloth bear in Nepal." Canadian Journal of Zoology 77, no. 11 (December 1, 1999): 1690–704. http://dx.doi.org/10.1139/z99-131.

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Ursids have adapted to environments ranging from the tropics to the arctic, and although the family is noted for its omnivory, some species have specialized food habits. The sloth bear (Melursus ursinus) has specialized on insect prey, particularly termites and ants, and exhibits some characteristics and behaviors that are common among myrmecophagous mammals. We examined whether myrmecophagy has affected its sociobiology. During 1990-1994 we studied a high-density population of sloth bears in Royal Chitwan National Park, Nepal. We found extensive seasonal overlap among home ranges of adults of

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19

Gordon, David M., and Ann Cowling. "The distribution and genetic structure of Escherichia coli in Australian vertebrates: host and geographic effects." Microbiology 149, no. 12 (December 1, 2003): 3575–86. http://dx.doi.org/10.1099/mic.0.26486-0.

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Escherichia coli was isolated from more than 2300 non-domesticated vertebrate hosts living in Australia. E. coli was most prevalent in mammals, less prevalent in birds and uncommon in fish, frogs and reptiles. Mammals were unlikely to harbour E. coli if they lived in regions with a desert climate and less likely to have E. coli if they lived in the tropics than if they lived in semi-arid or temperate regions. In mammals, the likelihood of isolating E. coli from an individual depended on the diet of the host and E. coli was less prevalent in carnivores than in herbivores or omnivores. In both b

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20

Feitosa, Francimário S., and Carla Ferreira Rezende. "Trophic ecology of the fish Leporinus piau (Characiformes: Anostomidae) in an area influenced by a dam in the Parnaíba River." Revista de Biología Tropical 68, no. 2 (February 21, 2020). http://dx.doi.org/10.15517/rbt.v68i2.38641.

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Introduction: Hydroelectric dams have several impacts on migratory fish, such as decreasing their abundance, local extinctions, and changes in the assemblage structure. Objective: To investigate the trophic and reproductive strategies of Leporinus piau upstream and downstream from a hydroelectric dam in the Parnaíba River. Methods: We identified food items and calculated trophic niche breadth in both sites to characterize the feeding strategy. We conducted permutational multivariate analysis of variance (PERMANOVA) to determine differences in diet between sites, followed by a SIMPER analysis i

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21

Feitosa, Francimário S., and Carla Ferreira Rezende. "Trophic ecology of the fish Leporinus piau (Characiformes: Anostomidae) in an area influenced by a dam in the Parnaíba River." Revista de Biología Tropical 68, no. 2 (February 21, 2020). http://dx.doi.org/10.15517/rbt.v68i2.38641.

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Introduction: Hydroelectric dams have several impacts on migratory fish, such as decreasing their abundance, local extinctions, and changes in the assemblage structure. Objective: To investigate the trophic and reproductive strategies of Leporinus piau upstream and downstream from a hydroelectric dam in the Parnaíba River. Methods: We identified food items and calculated trophic niche breadth in both sites to characterize the feeding strategy. We conducted permutational multivariate analysis of variance (PERMANOVA) to determine differences in diet between sites, followed by a SIMPER analysis i

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22

Albuquerque, Ralph L., and Theodore Garland. "Phylogenetic analysis of maximal oxygen consumption during exercise (V̇O2max) and ecological correlates among lizard species." Journal of Experimental Biology, November 2, 2020, jeb.229013. http://dx.doi.org/10.1242/jeb.229013.

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The maximum amount of oxygen consumed during forced exercise (V̇O2max) sets the upper limit to the effort that can be sustained over relatively long periods and can limit activity levels in nature. Among ectotherms, V̇O2max is primarily affected by body size and body temperature, but it should also coadapt with behavior, ecology, and life history aspects. We compiled published data from 11 different families of lizards, including 58 species and 7 populations (total 65 data points) and tested whether V̇O2max was related to diet (herbivore, insectivore, insectivore/carnivore, carnivore, and omni

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23

Stowe, Hannah E., J. P. Michaud, and Tania Kim. "The Benefits of Omnivory for Reproduction and Life History of a Specialized Aphid Predator, Hippodamia convergens (Coleoptera: Coccinellidae)." Environmental Entomology, December 3, 2020. http://dx.doi.org/10.1093/ee/nvaa154.

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Abstract The convergent lady beetle, Hippodamia convergens Guerin-Meneville, is a specialized predator of cereal aphids on the High Plains, completing its first generation each year in winter wheat, the resulting adults dispersing into summer crops and producing additional generations, contingent on the availability of aphids. In the present study, we tested the collective value of supplementary plant resources (sugars, pollen, and seedling wheat leaves), and small amounts of alternative prey, eggs of Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae), all provided together, for improving b

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24

Wessell, Adele. "Making a Pig of the Humanities: Re-centering the Historical Narrative." M/C Journal 13, no. 5 (October 18, 2010). http://dx.doi.org/10.5204/mcj.289.

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As the name suggests, the humanities is largely a study of the human condition, in which history sits as a discipline concerned with the past. Environmental history is a new field that brings together scholars from a range of disciplines to consider the changing relationships between humans and the environment over time. Critiques of anthropocentrism that place humans at the centre of the universe or make assessments through an exclusive human perspective provide a challenge to scholars to rethink our traditional biases against the nonhuman world. The movement towards nonhumanism or posthumani

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25

Cushing, Nancy. "To Eat or Not to Eat Kangaroo: Bargaining over Food Choice in the Anthropocene." M/C Journal 22, no. 2 (April 24, 2019). http://dx.doi.org/10.5204/mcj.1508.

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Kangatarianism is the rather inelegant word coined in the first decade of the twenty-first century to describe an omnivorous diet in which the only meat consumed is that of the kangaroo. First published in the media in 2010 (Barone; Zukerman), the term circulated in Australian environmental and academic circles including the Global Animal conference at the University of Wollongong in July 2011 where I first heard it from members of the Think Tank for Kangaroos (THINKK) group. By June 2017, it had gained enough attention to be named the Oxford English Dictionary’s Australian word of the month (

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26

Brien, Donna Lee. "Climate Change and the Contemporary Evolution of Foodways." M/C Journal 12, no. 4 (September 5, 2009). http://dx.doi.org/10.5204/mcj.177.

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Introduction Eating is one of the most quintessential activities of human life. Because of this primacy, eating is, as food anthropologist Sidney Mintz has observed, “not merely a biological activity, but a vibrantly cultural activity as well” (48). This article posits that the current awareness of climate change in the Western world is animating such cultural activity as the Slow Food movement and is, as a result, stimulating what could be seen as an evolutionary change in popular foodways. Moreover, this paper suggests that, in line with modelling provided by the Slow Food example, an increa

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Ankeny, Rachel A., Michelle Phillipov, and Heather J. Bray. "Celebrity Chefs and New Meat Consumption Norms: Seeking Questions, Not Answers." M/C Journal 22, no. 2 (April 24, 2019). http://dx.doi.org/10.5204/mcj.1514.

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IntroductionWe are increasingly being told to make ethical food choices, often by high-profile chefs advocating what they view as ethical consumption habits. Some actively promote vegetarian or vegan diets, with a growing number of high-profile restaurants featuring only or mainly plant-based meals. However, what makes food or restaurant menus ethical is not assessed by most of us using one standardised definition. Our food values differ based on our outlooks, past experiences, and perhaps most importantly, how we balance various trade-offs inherent in making food choices under different circu

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