Results 61 to 70 of about 218,821 (195)

Evolutionary tradeoff and equilibrium in an aquatic predator-prey system [PDF]

open access: yes, 2004
Due to the conventional distinction between ecological (rapid) and evolutionary (slow)timescales, ecological and population models to date have typically ignored the effects of evolution.
Ellner, Stephen P., Jones, Laura E.
core   +1 more source

A novel record of aardwolf Proteles cristata feeding behaviour [PDF]

open access: yes, 2013
Terrestrial members of the order Carnivora show great variation in their diet; some specialising on vertebrates, invertebrates, or plant matter, whereas others are omnivores or scavengers (Bekoff et al, 1984).
MacTavish, L, Yarnell, RW
core   +1 more source

Development and reproduction of Podisus distinctus (Heteroptera: Pentatomidae) fed on larva of Bombyx mori (Lepidoptera: Bombycidae)

open access: yesBrazilian Journal of Biology
Biological control has been reducing the use of chemical products against insect pests, specially predatory Pentatomidae. Species of this group can present high variations in their life cycle as a result of their diet.
M. C. Lacerda   +5 more
doaj   +1 more source

UK Seabirds in 2005 : results from the UK Seabird Monitoring Programme [PDF]

open access: yes, 2009
Seabirds in the UK were generally more productive in 2005 than in 2004, when productivity for many species reached an all-time low. A presumed scarcity of sandeels in 2004, especially in the North Sea, led to widespread starvation of chicks in the ...
Parsons, Matthew
core  

The Influence of Signaling Conspecific and Heterospecific Neighbors on Eavesdropper Pressure [PDF]

open access: yes, 2019
The study of tradeoffs between the attraction of mates and the attraction of eavesdropping predators and parasites has generally focused on a single species of prey, signaling in isolation.
Benson, Christopher S.   +5 more
core   +2 more sources

Turbidity influences individual and group level responses to predation in guppies, Poecilia reticulata [PDF]

open access: yes, 2015
© 2015 The Association for the Study of Animal Behaviour. Increasing turbidity (either sedimentary or organic) from anthropogenic sources has significant negative impacts on aquatic fauna, both directly and indirectly by disrupting behaviour.
Kimbell, Helen S.   +2 more
core   +1 more source

Coevolution in a one predator-two prey system. [PDF]

open access: yesPLoS ONE, 2010
Our understanding of coevolution in a predator-prey system is based mostly on pair-wise interactions.Here I analyze a one-predator-two-prey system in which the predator's attack ability and the defense abilities of the prey all evolve. The coevolutionary
Akihiko Mougi
doaj   +1 more source

The many faces of fear: comparing the pathways and impacts of nonconsumptive predator effects on prey populations. [PDF]

open access: yesPLoS ONE, 2008
BACKGROUND:Most ecological models assume that predator and prey populations interact solely through consumption: predators reduce prey densities by killing and consuming individual prey.
Evan L Preisser, Daniel I Bolnick
doaj   +1 more source

Dynamics of harvested-predator–prey model: role of alternative resources [PDF]

open access: yesModeling Earth Systems and Environment, 2016
In this paper, A predator–prey model with square root functional response for herd behaviour of prey incorporating predator harvesting is proposed and analysed. The predator population is provided with alternative resource. The proposed model is demonstrated in respect of theoretical as well as numerical results.
Banshidhar Sahoo   +2 more
openaire   +1 more source

The triangulation between Arctic birds, Arctic foxes and Arctic lemmings

open access: yesFrontiers in Ecology and Evolution
Many studies have suggested that Arctic predators preying on lemmings, especially the Arctic fox, take advantage of the high prey densities during peak years, but have to switch to alternative prey during years of low lemming density, thereby forcing ...
Anders Angerbjörn   +2 more
doaj   +1 more source

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