Results 121 to 130 of about 325 (159)

The Ideal Free Distribution with Kleptoparasitism

Journal of Theoretical Biology, 1997
Abstract We present a simple mechanistic model describing kleptoparasitic (food stealing) behaviour among a group of foragers. This behavioural model is used to produce an analytic expression for the food uptake rate (functional response) of individual foragers in the presence of kleptoparasitism.
Graeme D. Ruxton, Anthony L. Moody
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Apparent kleptoparasitism in fish—parasitic gnathiid isopods

Parasitology Research, 2018
Gnathiid isopods are common external parasites/micropredators that feed on the blood of marine fishes. During the course of processing samples of gnathiid isopods collected from light traps in the central Philippines, we observed a gnathiid attached to and apparently feeding from the abdomen of another gnathiid.
Mary O. Shodipo, Rick Dane C. Gomez, Rachel L. Welicky, Paul C. Sikkel   +3 more
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Evolution of kleptoparasitism as a war of attrition

Journal of Evolutionary Biology, 1999
Abstract Previous models of kleptoparasitism (resource stealing) assume that contests over resource items are of fixed duration. Here we suggest that such contests will often be well represented as a war of attrition, with the winner being the individual who is prepared to contest for the longer time.
null Ruxton, null Broom
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Vibrations: Their Signal Function for a Spider Kleptoparasite

Science, 1979
The stealing behavior of Argyrodes elevatus suggests that this kleptoparasitic spider monitors the movements and the hunting success of its web-building host. Wrapping of prey by the host regularly elicits raids from the kleptoparasite.
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Host selection by a kleptoparasitic spider

Journal of Natural History, 2000
Argyrodes globosus (Keyserling, 1884) is a small kleptoparasite spider that steals prey from the web of web-building spiders. In coffee plantations in the south of Mexico it was observed to parasitize five species: Gasteracantha cancriformis (Linnaeus, 1785) and Verrucosa arenata (Walckenaer, 1841) (Araneidae), Leucauge mariana (Keyserling, 1881) and ...
openaire   +1 more source

Resistance is useless?—extensions to the game theory of kleptoparasitism

Bulletin of Mathematical Biology, 2004
We extend the game theoretic model of kleptoparasitism introduced by Broom and Ruxton (1998, Behav. Ecol. 9, 397-403) in two ways: we allow for asymmetric contests, where the probability alpha of the challenger winning can take any value from 0 to 1; and we allow the handler to choose not to resist the challenge, but to immediately concede and ...
Mark, Broom, Roger M, Luther, Graeme D, Ruxton   +2 more
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Rapid convergence to an equilibrium state in kleptoparasitic populations

Journal of Mathematical Biology, 2004
Previous papers have modelled the behaviour of populations which are subject to kleptoparasitism, and found those ecological situations in which kleptoparasitism should occur. Individuals were considered to be in one of several states, and an equilibrium distribution for the population was found. It was then assumed, for analytical purposes but without
Luther, R. M., Broom, M.
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Kleptoparasitism and Scavenging Can Stabilize Ecosystem Dynamics

The American Naturalist, 2017
Scavenging is ubiquitous in nature, but its implications have rarely been investigated. We used camera traps on wolf kills to investigate the role of scavenging on predator and multiprey dynamics in a northern Apennine system in Italy. In contrast to North American systems, the omnivorous wild boar successfully competes with wolves for the meat of ...
Focardi, Stefano, Materassi, Massimo, Innocenti, Giacomo, Berzi, Duccio   +3 more
openaire   +5 more sources

Adults Determine the Success of Kleptoparasitism in Frigatebirds

Waterbirds
Abstract: The kleptoparasitism behaviour of frigatebirds is a fascinating example of exploitation in the animal kingdom. To date, such behaviour has never been described before in the Magnificent Frigatebird Fregata magnificens breeding population in French Guiana, one of the most important colonies in the Caribbean, which has increased exponentially ...
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Kleptoparasitism and complexity in a multi-trophic web

Ecological Complexity, 2017
In this work the effects of kleptoparitism in a multi-trophic food-web, in which an omnivorous species scavenges the kills of a top predator, are investigated. Scavengers are assumed to be able to steal predators' kills by direct interference and aggression.
Massimo Materassi, Giacomo Innocenti, Duccio Berzi, Stefano Focardi   +3 more
openaire   +2 more sources