Results 31 to 40 of about 143,183 (293)

Predator cannibalism can shift prey community composition toward dominance by small prey species

Ecology and Evolution, 2022
Cannibalism among predators is a key intraspecific interaction affecting their density and foraging behavior, eventually modifying the strength of predation on heterospecific prey.
Kunio Takatsu
doaj   +1 more source

Evidence of the trade-off between starvation and predation risks in ducks [PDF]

, 2011
The theory of trade-off between starvation and predation risks predicts a decrease in body mass in order to improve flight performance when facing high predation risk.
Zimmer, Cedric, Poulin Nicolas, Robin, JP, Zimmer Cédric, Mathieu Boos, Poulin, Nicolas, Zimmer, C, Boos Mathieu, Odile Petit, Cédric Zimmer, Andrew Gosler, Petit Odile, Petit, O, Gosler Andrew, Robin Jean-Patrice, Nicolas Poulin, Boos, Mathieu, Petit, Odile, Poulin, N, Jean-Patrice Robin, Gosler, Andrew, Robin, Jean-Patrice, Boos, M   +22 more
core   +2 more sources

Age-Dependent Utilization of Shelters and Habitat in Two Reptile Species with Contrasting Intraspecific Interactions

Animals, 2019
Reptiles undergo worldwide decline driven mostly by habitat change. Detailed recognition of factors underlying spatial structure and habitat utilization is therefore a prerequisite of effective conservation of this group.
Aleksandra Kolanek, Stanisław Bury, Edyta Turniak, Mariusz Szymanowski   +3 more
doaj   +1 more source

Examining intraspecific multiple predator effects across shifting predator sex ratios [PDF]

Basic and Applied Ecology, 2020
Predator-predator interactions, or “multiple predator effects” (MPEs), are pervasive in the structuring of communities and complicate predictive quantifications of ecosystem dynamics. The nature of MPEs is also context-dependent, manifesting differently among species, prey densities and habitat structures.
Ross N. Cuthbert, Tatenda Dalu, Ryan J. Wasserman, Olaf L.F. Weyl, P. William Froneman, Amanda Callaghan, Jaimie T.A. Dick   +6 more
openaire   +2 more sources

Voltinism and larval growth pattern in Coenagrion mercuriale (Odonata: Coenagrionidae) at its northern range margin

European Journal of Entomology, 2002
Voltinism and larval growth pattern were investigated in an edge-of-range population of Coenagrion mercuriale. Coenagrion mercuriale is semi-voltine in Britain and growth is inhibited in winter.
Bethan V. PURSE, David J. THOMPSON
doaj   +1 more source

Predation life history responses to increased temperature variability [PDF]

, 2014
This study was funded by a Postdoctoral fellowship to MB (SFRH/BPD/82259/2011) Fundacao para a Ciencia e Tecnologia (www.fct.pt/index.phtml.pt) and with a ‘‘Bolsista CAPES/BRASIL’’, (Project A058/2013) to AMVMS.The evolution of life history traits is ...
Barbosa, Miguel, Miguel Barbosa (633512), Pestana, Joao, Joao Pestana (633513), Miguel Barbosa, Amadeu M. V. M. Soares (324654), Soares, Amadeu M V M, Joao Pestana, Amadeu M. V. M. Soares, Soares, Amadeu M. V. M., Amadeu M V M Soares   +10 more
core   +2 more sources

Cannibalism in Tityus metuendus Pocock, 1897 (Scorpiones: Buthidae) from the Brazilian Amazon

Revista Chilena de Entomología
Scorpions are an important predator group in the habitats where they live, due to their voracity. However, their predatory habits are not well recorded, particularly in Amazonian species.
Jonas G. Martins, Marllus R. N. Almeida, Rudi E. L. Procópio, André F. A. Lira   +3 more
doaj   +1 more source

Variation in wing morphology is related to breeding environment in a high‐elevation specialist bird

Journal of Avian Biology, 2022
The morphology of bird wings is subject to a variety of selective pressures, including migration, predation, habitat structure and sexual selection.
Francesco Ceresa, Severino Vitulano, Michele Pes, Laura Tomasi, Mattia Brambilla, Laura Kvist, Paolo Pedrini, Matteo Anderle, Andreas Hilpold, Petra Kranebitter   +9 more
doaj   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Effects of introduced trout predation on non-diadromous galaxiid fish populations across invaded riverscapes [PDF]

, 2013
We assessed the landscape-scale effect of predation pressure from trout on the population integrity and distributions of non-diadromous galaxiids in high-country streams of the South Island, New Zealand.
Darragh J. Woodford, Angus R. McIntosh
core