Affichage des résultats 6241 à 6260 sur 6930 au total
Céline Brochier, Hervé Philippe, David Moreira
Thomas Galewski, Marie-Ka Tilak, Sophie Sanchez, Pascale Chevret, Emmanuel Paradis, Emmanuel J.P. Douzery
Postcopulatory sexual selection is thought to be an important force driving the evolution of sperm design. Yet, despite numerous theoretical and empirical studies of the relationship between sperm design and sperm competition (as one postcopulatory sexual selection mechanism) is still poorly understood. A series of comparative studies in several taxonomic groups have found inconclusive and sometimes even contradictory results suggesting that in different taxonomic groups the evolution of sperm design in the context of sperm competition show markedly different patterns. We conducted the largest to date comparative study including over 250 species of passerine birds to investigate the relationship between sperm design and sperm competition and to determine the evolutionary rate of sperm design as a sexually selected trait. We did so in three ways: (I) we investigated the relationship between sperm design and sperm competition at different phylogenetic levels its association with the underlying phylogeny; (II) we tested the interspecific, the intraspecific and the intra-male variation of sperm design in the context of sperm competition; (III) we performed experiments to improve our understanding of the behavioural mechanisms influencing sperm design and function. Our results provide new insights into the evolution of sperm design as a sexually selected trait.
P. Remigi, A. Faye, A. Kane, M. Deruaz, J. Thioulouse, M. Cissoko, Y. Prin, A. Galiana, B. Dreyfus, R. Duponnois
I. Boudiaf, E. Baudoin, H. Sanguin, A. Beddiar, Jean Thioulouse, A. Galiana, Y. Prin, C. Le Roux, M. Lebrun, R. Duponnois
S. Dray, M. Royer-Carenzi, C. Calenge
Véronique Douard, Frédéric Brunet, Bastien Boussau, Isabelle Ahrens-Fath, Virginie Vlaeminck-Guillem, Bernard Haendler, Vincent Laudet, Yann Guiguen
Melissa Altura, Elizabeth Heath-Heckman, Amani Gillette, Natacha Kremer, Anne-Marie Krachler, Caitlin Brennan, Edward Ruby, Kim Orth, Margaret Mcfall-Ngai
Baptiste Saudemont, Alexandra Popa, Joanna Parmley, Vincent Rocher, Corinne Blugeon, Anamaria Necsulea, Eric Meyer, Laurent Duret
Christian Lanshoeft, Thierry Wolf, Markus Walles, Samuel Barteau, Franck Picard, Olivier Kretz, Sarah Cianférani, Olivier Heudi
J.R. David, Patricia Gibert, B. Moreteau, G. Gilchrist, R.B. Huey
Aurore Gallot, Emmanuel Desouhant, Vincent Lhuillier, David Lepetit, Adil El Filali, Laurence Mouton, Cristina Vieira-Heddi, Isabelle Amat
Aurore Gallot, Emmanuel Desouhant, Vincent Lhuillier, David Lepetit, Adil El Filali, Laurence Mouton, Cristina Vieira-Heddi, Isabelle Amat
Guillaume Péron
Pierre Peterlongo, Julien Allali, Marie-France Sagot
Thibault Clauzel, Pascale Richardin, Jannick Ricard, Yves Le Béchennec, Romain Amiot, François Fourel, Brian Phouybanhdyt, Arnauld Vinçon-Laugier, Jean-Pierre Flandrois, Christophe Lécuyer
L. Duret
Franck Thuny, Julien Textoris, Amira Ben Amara, Adil El Filali, Christian Capo, Gilbert Habib, Didier Raoult, Jean-Louis Mege
Cesar A Fortes-Lima, Concetta Burgarella, Rickard Hammarén, Anders Eriksson, Mário Vicente, Cecile Jolly, Armando Semo, Hilde Gunnink, Sara Pacchiarotti, Leon Mundeke, Igor Matonda, Joseph Koni Muluwa, Peter Coutros, Terry S. Nyambe, Justin Cirhuza Cikomola, Vinet Coetzee, Minique de Castro, Peter Ebbesen, Joris Delanghe, Mark Stoneking, Lawrence Barham, Marlize Lombard, Anja Meyer, Maryna Steyn, Helena Malmström, Jorge Rocha, Himla Soodyall, Brigitte Pakendorf, Koen Bostoen, Carina M. Schlebusch
Joseph Pickrell, Nick Patterson, Chiara Barbieri, Falko Berthold, Linda Gerlach, Tom Güldemann, Blesswell Kure, Sununguko Wata Mpoloka, Hirosi Nakagawa, Christfried Naumann, Mark Lipson, Po-Ru Loh, Joseph Lachance, Joanna Mountain, Carlos D. Bustamante, Bonnie Berger, Sarah Tishkoff, Brenna M Henn, Mark Stoneking, David Reich, Brigitte Pakendorf