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Journal articles on the topic 'Predator satiation hypothesis'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Greenberg, C. H., and S. J. Zarnoch. "A test of the predator satiation hypothesis, acorn predator size, and acorn preference." Canadian Journal of Forest Research 48, no. 2 (2018): 237–45. http://dx.doi.org/10.1139/cjfr-2017-0381.

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Mast seeding is hypothesized to satiate seed predators with heavy production and reduce populations with crop failure, thereby increasing seed survival. Preference for red or white oak acorns could influence recruitment among oak species. We tested the predator satiation hypothesis, acorn preference, and predator size by concurrently measuring acorn production, mouse abundance, and white versus red oak acorn removal rates in exclosures allowing access by mice (HW), squirrels and smaller-sized vertebrates (WW), or all-sized vertebrates (C) for 12 years. Annual removal rate varied, but virtually

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2

Numata, Shinya, Naoki Kachi, Toshinori Okuda, and N. Manokaran. "Chemical defences of fruits and mast-fruiting of dipterocarps." Journal of Tropical Ecology 15, no. 5 (1999): 695–700. http://dx.doi.org/10.1017/s026646749900111x.

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Mast-fruiting is the intermittent and synchronous production of large fruits by a population of plants at long intervals (Herrera et al. 1998, Kelly 1994). Several hypotheses have been proposed concerning the adaptive advantages of mast-fruiting (Janzen 1971, 1974; Kelly 1994), and some field observations have provided evidence for these hypotheses (Norton & Kelly 1988, Shibata et al. 1998, Sork 1993). The predator-satiation hypothesis is one well-known explanation for reproductive synchrony in plants and animals (Janzen 1971, 1974; Kelly 1994). This hypothesis claims that mast fruiting at

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3

Boudreau, S., and M. J. Lawes. "Density- and distance-dependent seedling survival in a ballistically dispersed subtropical tree species Philenoptera sutherlandii." Journal of Tropical Ecology 24, no. 1 (2008): 1–8. http://dx.doi.org/10.1017/s026646740700466x.

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Abstract:We examine the density- and distance-dependent seedling survival of Philenoptera sutherlandii, a common pod-bearing and dehiscent legume (Fabaceae) in Ongoye Forest, South Africa. Short-range ballistic dispersal causes seed to fall beneath the parent tree, where density- or distance-dependent mortality effects are expected to be concentrated. One hundred and eighty marked seedlings were monitored in a 0.5-ha plot containing 30 adults. Our survival data do not support the escape hypothesis. Predation levels declined with increasing seedling density (positive density-dependent survival)

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4

Picman, Jaroslav, Stanislav Pribil, and Andre Isabelle. "Antipredation Value of Colonial Nesting in Yellow-Headed Blackbirds." Auk 119, no. 2 (2002): 461–72. http://dx.doi.org/10.1093/auk/119.2.461.

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Abstract Yellow-headed Blackbirds (Xanthocephalus xanthocephalus) in Manitoba breed in dense colonies in cattail marshes. Their reproductive success is affected mainly by predation. The most important predator on blackbird nests is the Marsh Wren (Cistothorus palustris), which breaks blackbird eggs and kills small nestlings. We examined whether colonial nesting in Yellow-headed Blackbirds may represent an adaptation to reduce Marsh Wren predation. Marsh Wren predation may be reduced by (1) mutual nest defense by adult blackbirds, (2) predator satiation or dilution, or (3) selfish-herd effects.

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5

Pizo, M. A., and E. M. Vieira. "Palm harvesting affects seed predation of Euterpe edulis, a threatened palm of the Brazilian Atlantic Forest." Brazilian Journal of Biology 64, no. 3b (2004): 669–76. http://dx.doi.org/10.1590/s1519-69842004000400015.

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The palm tree Euterpe edulis is endemic to the Atlantic Forest, where it constitutes an economically important forest product. The often unplanned and illegal harvesting of palm hearts has led to drastic reductions in the populations of E. edulis in many areas where this palm used to be the dominant understorey tree species. We investigated the effects of harvesting on seed and seedling predation of E. edulis. We tested the predictions of the dominance-predation hypothesis according to which predator satiation leads to an inverse relationship between the amount of predation and the dominance o

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6

Xiao, Zhishu, Zhibin Zhang, and Charles J. Krebs. "Long-term seed survival and dispersal dynamics in a rodent-dispersed tree: testing the predator satiation hypothesis and the predator dispersal hypothesis." Journal of Ecology 101, no. 5 (2013): 1256–64. http://dx.doi.org/10.1111/1365-2745.12113.

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7

Donaldson, John S. "Mast-seeding in the cycad genus Encephalartos: a test of the predator satiation hypothesis." Oecologia 94, no. 2 (1993): 262–71. http://dx.doi.org/10.1007/bf00341326.

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8

Farkas, Timothy E., and Gabriela Montejo-Kovacevich. "Density-dependent selection closes an eco-evolutionary feedback loop in the stick insect Timema cristinae." Biology Letters 10, no. 12 (2014): 20140896. http://dx.doi.org/10.1098/rsbl.2014.0896.

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Empirical demonstrations of feedbacks between ecology and evolution are rare. Here, we used a field experiment to test the hypothesis that avian predators impose density-dependent selection (DDS) on Timema cristinae stick insects. We transplanted wild-caught T. cristinae to wild bushes at 50 : 50 cryptic : conspicuous morph ratio and manipulated density by transplanting either 24 or 48 individuals. The frequency of the conspicuous morph was reduced by 73% in the low-density treatment, but only by 50% in the high-density treatment, supporting a hypothesis of negative DDS. Coupled with previous

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9

Linhart, Yan B., Xoaquín Moreira, Marc A. Snyder, and Kailen A. Mooney. "Variability in seed cone production and functional response of seed predators to seed cone availability: support for the predator satiation hypothesis." Journal of Ecology 102, no. 3 (2014): 576–83. http://dx.doi.org/10.1111/1365-2745.12231.

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10

Żywiec, Magdalena, Jan Holeksa, Mateusz Ledwoń, and Piotr Seget. "Reproductive success of individuals with different fruit production patterns. What does it mean for the predator satiation hypothesis?" Oecologia 172, no. 2 (2012): 461–67. http://dx.doi.org/10.1007/s00442-012-2502-x.

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11

Zwolak, Rafał, Michał Bogdziewicz, Aleksandra Wróbel, and Elizabeth E. Crone. "Advantages of masting in European beech: timing of granivore satiation and benefits of seed caching support the predator dispersal hypothesis." Oecologia 180, no. 3 (2015): 749–58. http://dx.doi.org/10.1007/s00442-015-3511-3.

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12

Andersen, AN. "Andromonoecy in Four Australian Species of Leptospermum." Australian Journal of Botany 38, no. 5 (1990): 511. http://dx.doi.org/10.1071/bt9900511.

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Leptospermum myrsinoides, L. juniperinum, L. laevigatum and L. lanigerum are recorded as being andromonoecious, with the proportion of total flowers that is functionally male averaging 36, 42, 48 and 14% respectively at Wilson's Promontory during the 1981-83 flowering seasons. For each species, this figure varied markedly between individual plants, sites and seasons: for example, for L. myrsinoides it ranged from 0 to 80% among individual plants at one site on one occasion, from 31 to 71% at one site over three seasons, and from 31 to 71% at different sites during the one season. This variatio

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13

Mendoza, Irene, Gabrielle Martin, Adeline Caubère, et al. "Does masting result in frugivore satiation? A test with Manilkara trees in French Guiana." Journal of Tropical Ecology 31, no. 6 (2015): 553–56. http://dx.doi.org/10.1017/s0266467415000425.

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Abstract:Species showing mast seeding synchronously produce large amounts of fruits during some scattered years. This massive crop has been hypothesized to improve dispersal effectiveness by a satiation of seed predators, but the consequences for seed dispersers have barely been studied in the tropics. We tested the hypothesis that masting resulted in satiation of frugivorous dispersers using the study case of two Manilkara species growing in an Amazonian forest in French Guiana. Seed dispersal was estimated by means of seed traps in two forest types during a 10-y monitoring. Manilkara huberi

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14

Blundell, Arthur G., and David R. Peart. "Seedling recruitment failure following dipterocarp mast fruiting." Journal of Tropical Ecology 20, no. 2 (2004): 229–31. http://dx.doi.org/10.1017/s0266467403001123.

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Many rain-forest trees in South-East Asia, including the dominant canopy family Dipterocarpaceae, reproduce in gregarious mast-fruiting events once every 2–11 y (Ashton et al. 1988). The dominant hypothesis for the evolution of masting is that predators are incapable of consuming mast seed crops, so that natural selection has favoured parent trees that fruit in synchrony (Janzen 1974, 1976). Mast flowering and fruiting are visually spectacular and quantified in harvest records for dipterocarp species producing large, oil-rich tengkawang seeds (Curran et al. 1999). Seedling recruitment followin

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15

Wright, Boyd R., Alain F. Zuur, and Gary C. K. Chan. "Proximate causes and possible adaptive functions of mast seeding and barren flower shows in spinifex grasses (Triodia spp.) in arid regions of Australia." Rangeland Journal 36, no. 3 (2014): 297. http://dx.doi.org/10.1071/rj13104.

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Mast seeding, the intermittent production of large synchronised seed crops among plant populations, is a phenomenon that occurs at exceptionally long intervals in spinifex grasses (Triodia spp.) from arid regions of Australia. This is despite the reliance of these fire-sensitive plants on seeds for post-fire regeneration, and that spinifex grasslands rate among Australia’s most flammable ecosystems. The proximate causes and possible adaptive functions of masting in seven species of spinifex from arid regions within the 350-mm rainfall isohyet were investigated. Specifically, the seed set perce

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16

Leeper, Abigail C., and Jalene M. LaMontagne. "Cone characteristics and insect predation levels vary across years in mast seeding white spruce." Canadian Journal of Forest Research, April 9, 2021. http://dx.doi.org/10.1139/cjfr-2020-0442.

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Populations of many tree species exhibit synchronous and highly temporally variable seed crops across years. This is called mast seeding, and there are two predominant hypotheses for this pattern of reproduction, pollination efficiency and seed-predator satiation. Mast seeding studies typically involve records of population-level reproduction, with less information on the characteristics of reproductive structures. Here, we use data across six years (2012-2017), spanning a range of population-level cone conditions, to characterize i) white spruce (Picea glauca) cone lengths and seeds per cone,

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17

Bos, Ryan P., Tracey T. Sutton, and Tamara M. Frank. "State of Satiation Partially Regulates the Dynamics of Vertical Migration." Frontiers in Marine Science 8 (February 25, 2021). http://dx.doi.org/10.3389/fmars.2021.607228.

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Vertical migrations into shallower waters at night are beneficial for migrators as they reduce predation risk and allow migrators to encounter a higher density of prey. Nevertheless, ocean acoustics data and trawl data have shown that a portion of some vertically migrating populations remain at depth and do not migrate. One hypothesis for this phenomenon is the Hunger-Satiation hypothesis, which in part states that the non-migrating portion of the migrating species-assemblage refrains from migrating if they have full or partially full stomachs from daytime or nocturnal feeding. However, stomac

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18

Zoccarato, Luca, Anna Malusà, and Serena Fonda Umani. "Major contribution of prokaryotes to carbon fluxes in the pelagic microbial food webs of the Mediterranean Sea." Advances in Oceanography and Limnology 7, no. 1 (2016). http://dx.doi.org/10.4081/aiol.2016.5799.

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<p>In this study, we carried out dilution experiments at the surface and in the mesopelagic and bathypelagic layers at 15 sites in the Mediterranean Sea that covered a wide range of trophic conditions. The main aim was to test the hypothesis that prokaryotes, and particularly heterotrophic prokaryotes, are pivotal in sustaining both nanoplankton and microzooplankton energy requirements at all of the considered trophic states. These data highlight that bacterivory is the major pathway of organic carbon transfer in the oligotrophic and meso-eutrophic environments. The microzooplankton most

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