Results 161 to 170 of about 1,221 (205)

Kleptoparasitism of a Double-Crested Cormorant (Nannopterum auritum) by a Great Blue Heron (Ardea herodias)

Southeastern naturalist (Steuben, Me.)
- We observed kleptoparasitism by a Ardea Herodias (Great Blue Heron) on a Nannopterum auritum (Double-crested Cormorant) at Harns Marsh, Fort Myers, FL.
Ryan A C Leys, Jenny Andrews
semanticscholar   +1 more source

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
openaire   +2 more sources

Effects of hillside aspect, landscape features, and kleptoparasitism on the reproductive success of the solitary bee Osmia caerulescens

Ecological Entomology, 2020
Osmia caerulescens is a generalist solitary bee well‐adapted to altered anthropogenic environments, and the kleptoparasitic wasp Sapyga quinquepunctata has been cited among its natural enemies. We analysed offspring characteristics of O. caerulescens and
E. Tobajas, Natalia Rosas‐Ramos, J. Asís, V. Paz, J. Tormos, Laura Baños-Picón   +5 more
semanticscholar   +1 more source

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.
openaire   +3 more sources

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

Wild dogs and kleptoparasitism: some misunderstandings

African Journal of Ecology, 2015
Note and record ; John R. Speakman, Martyn L. Gorman, Michael G.L.
Speakman, J., Gorman, M., Mills, M., Raath, J.   +3 more
openaire   +2 more sources

Foraging innovations and kleptoparasitism in birds

2007
This item was digitized as part of a project to share McGill's intellectual legacy with the public. If you are the copyright holder or a relative of the copyright holder who is deceased, you may request withdrawal by emailing escholarship.library@mcgill.ca.
openaire   +1 more source

The Effect of Information on Payoff in Kleptoparasitic Interactions

2013
We model stealing interactions as a Producer–Scrounger game in an extensive form where one individual, the scrounger, may attempt to steal a valuable item from another, the producer, who may in turn defend it. The population is not homogeneous, but rather the individuals may place a different value on the same resource.
Mark Broom, Jan Rychtář, David G. Sykes   +2 more
openaire   +1 more source

Kleptoparasitism: Host and Prey Selection by Gulls

1985
Black-headed gulls steal food from plovers. As we saw in Chapter 2, they seem to be able to obtain in excess of their daily energy requirement solely by stealing earthworms from foraging lapwings. In the preceding chapters, it has also become clear that the arrival of gulls in a flock and their kleptoparasitic activity has a complex effect on time ...
C. J. Barnard, D. B. A. Thompson
openaire   +1 more source