Showing results 5981 to 6000 on 6747 in total
The study of predator-prey behavior is of primary importance to the field of ecology. However, few studies measure interactions between predators and their most dangerous prey. Our team used long-term datasets from Yellowstone National Park and Scandinavia to evaluate 1) the role of cooperative hunting in the ability of predators to hunt dangerous prey, 2) how predator preference for differentially dangerous prey species changes in relation to their relative abundance, and 3) how the kill rate of a top predator was affected by the presence of another. We found that 1) wolves (Canis lupus) were more cooperative when hunting bison (Bison bison), their most dangerous North American prey, than when hunting elk (Cervus elaphus). 2) Contrary to the prey switching hypothesis, wolves in northern Yellowstone attacked and killed disproportionately more of the rarer, but safer species; wolves maintained a strong preference against bison, even when this species was more than twice as abundant as elk. Analyses of wolf-bison behavioral interactions indicate that wolf preference against bison reflected an inability to consistently overcome bison antipredator defenses. 3) Finally, although brown bears (Ursus arctos) can monopolize wolf kills, we found no support in either Yellowstone or Scandinavia for the common assumption that brown bears cause wolves to kill more often. On the contrary, our results showed the opposite effect, suggesting that brown bear presence actually reduces wolf kill rate. One potential explanation for decreased wolf kill rate is the energetic costs associated with prematurely abandoning a kill to hunt dangerous prey. This research contributes to the current body of work addressing the effects of wolf reintroduction in Yellowstone, and sheds light on the behavioral relationships at play in a special type of predator-prey interaction: predators that hunt dangerous prey.
Mélissa Verin, Salomé Bourg, Frédéric Menu, Etienne Rajon
Ignacio Quintero, Nicolas Lartillot, Hélène Morlon
Nicolas Morellet, Stéphane Champely, Jean-Michel Gaillard, Philippe Ballon, Yves Boscardin
M. Guiserix, N. Bahi-Jaber, David Fouchet, F. Sauvage, D. Pontier
Adam Alexander Thil Smith, Eugeni Belda, Alain Viari, Claudine Médigue, David Vallenet
Sylvain Goutelle, Laurent Bourguignon, P. Maire, R. W. Jelliffe, M. Neely
P. Bover, J. A. Alcover, J. Michaux, Sabrina Renaud
Pere Bover, Josep Alcover, Jacques Michaux, Sabrina Renaud
Laure Ségurel, Ellen Miranda Leffler, Molly M. Przeworski
Isabelle Sermet-Gaudelus, Delphine Roussel, Stéphanie Bui, Eric Deneuville, Frédéric Huet, Philippe Reix, Gabriel Bellon, Gérard Lenoir, Aleksander Edelman
Guillaume Péron, Justin Calabrese, Olivier Duriez, Christen Fleming, Ruth García-Jiménez, Alison Johnston, Sergio A Lambertucci, Kamran Safi, Emily L C Shepard
Thomas Cucchi, Ross Barnett, Natalia Martinkova, Sabrina Renaud, Elodie Renvoise, Allowen Evin, Alison Sheridan, Ingrid Mainland, Caroline Wickham-Jones, Christelle Tougard, Jean-Pierre Quere, Michel Pascal, Marine Pascal, Gerald Heckel, Paul O'Higgins, Jeremy B. Searle, Keith. M. Dobney
J. B. Dacks, M. C. Field, R. Buick, L. Eme, Simonetta Gribaldo, A. J. Roger, Céline Brochier-Armanet, D. P. Devos
Julia Schwartzman, Eric Koch, Elizabeth Heath-Heckman, Lawrence Zhou, Natacha Kremer, Margaret Mcfall-Ngai, Edward Ruby
Emmanuelle Joly, Erwan Poivet, Aurore Gallot, Fabrice Legeai, Nicolas Montagné
Marcel Smid, Saskia Wilting, Katharina Uhr, F. Germán Rodríguez-González, Vanja de Weerd, Wendy J.C. Prager-van der Smissen, Michelle van der Vlugt-Daane, Anne van Galen, Serena Nik-Zainal, Adam Butler, Sancha Martin, Helen Davies, Johan Staaf, Marc van de Vijver, Andrea Richardson, Gaëten Macgrogan, Roberto Salgado, Gert G.G.M. van den Eynden, Colin Purdie, Alastair Thompson, Carlos Caldas, Paul Span, Fred C.G.J. Sweep, Peter Simpson, Sunil Lakhani, Steven van Laere, Christine Desmedt, Angelo Paradiso, Jorunn Eyfjord, Annegien Broeks, Anne Vincent-Salomon, Andrew Futreal, Stian Knappskog, Tari King, Alain Viari, Anne-Lise Børresen-Dale, Hendrik Stunnenberg, Mike Stratton, John Foekens, Anieta Sieuwerts, John W.M. Martens
Jean-Christophe Lega, N. Fabien, Q. Reynaud, I. Durieu, S. Durupt, M. Dutertre, J. F. Cordier, V. Cottin
Jean-Christophe Lega, Nicole Fabien, Quitterie Reynaud, Isabelle Durieu, Stéphane Durupt, Marine Dutertre, Jean-François Cordier, Vincent Cottin
David Lepetit, Pierre Thiebaud, Saïd Aoufouchi, Claude Prigent, Rozène Guesné, Nadine Thézé