Article
Ecology
Arnaud Badiane, Andreaz Dupoue, Pauline Blaimont, Donald B. Miles, Anthony L. Gilbert, Mathieu Leroux-Coyau, Anna Kawamoto, David Rozen-Rechels, Sandrine Meylan, Jean Clobert, Jean-Francois Le Galliard
Summary: The study found that the three color signals conveyed information on different aspects of male condition, supporting a multiple message hypothesis. Testosterone only influenced parasitism, suggesting that it does not directly mediate the relationships between color signals and their information content. Additionally, color signals became more saturated in forested habitats, indicating an adaptation to degraded light conditions, and generally brighter in mesic conditions, contradicting the thermal melanism hypothesis.
JOURNAL OF ANIMAL ECOLOGY
(2022)
Article
Biology
Nan Lyu, D. Justin Yeh, Huw Lloyd, Yue-Hua Sun
Summary: The study examines the relationship between post-pairing male behaviors and female trait evolution using theoretical models. It finds that male mate choosiness can have surprising influence on the evolution of costly female traits. The study suggests that choosy males can have different post-pairing behaviors, which has been overlooked in previous studies. The findings show that both male preferences and female traits can evolve more easily than previously expected.
COMMUNICATIONS BIOLOGY
(2022)
Article
Marine & Freshwater Biology
Davina E. Poulos, Mark McCormick
Summary: The effect of habitat loss on habitat specialists and generalists in coral reef fishes has been studied. The order of species arrival and timing affects their interactions and propensity to migrate. This has important consequences for the persistence of specialist species and the fish community in changing environments.
Article
Ecology
Eleanor Bath, Daisy Buzzoni, Toby Ralph, Stuart Wigby, Irem Sepil
Summary: Mating affects female behavior and physiology across a wide range of taxa, often induced by components of male ejaculate. Variation in male condition can lead to differences in the strength of responses males can stimulate in females, affecting fitness outcomes for both sexes.
FUNCTIONAL ECOLOGY
(2021)
Article
Biology
America Hernandez, Margarita Martinez-Gomez, Rene Beamonte-Barrientos, Bibiana Montoya
Summary: Research suggests that colourful traits in female birds have evolved and are maintained by sexual selection, as they are positively associated with residual mass, immune response, clutch size, and male mate preference. These traits are likely condition-dependent signals in sexual communication.
Article
Psychology, Biological
Sarah B. O'Hea Miller, Andrew R. Davis, Marian Y. L. Wong
Summary: This study investigates the impact of habitat complexity on aggression between invasive and native crayfish species. The results demonstrate that habitat complexity reduces aggression in intraspecific contests, but has no effect on interspecific contests. Additionally, the study finds that invasive species are more competitive and pose a greater threat to native species when established as residents.
Article
Behavioral Sciences
Daniel Heimerl, Pavla Dudova, Karoline Wacker, Elisa Schenkel, Garance Despreaux, Cristina Tuni
Summary: When there are many competitors but few females available, male spiders change their mating tactics by producing more but lower quality food gifts. This allows them to secure matings while saving energy. The adult sex ratio can affect the intensity of sexual selection, and under intense competition, males may increase their investment in behaviors to outcompete rivals. However, in environments where males are more common, mating opportunities are rare, so males may reduce costly courtship and adopt alternative reproductive tactics.
BEHAVIORAL ECOLOGY
(2022)
Article
Ecology
Alexis Rutschmann, Andreaz Dupoue, Donald B. Miles, Rodrigo Megia-Palma, Clemence Lauden, Murielle Richard, Arnaud Badiane, David Rozen-Rechels, Mathieu Brevet, Pauline Blaimont, Sandrine Meylan, Jean Clobert, Jean-Francois Le Galliard
Summary: Research indicates that warmer nocturnal temperatures may affect the physiological performance and life history of ectotherms. While warmer nights can expand the thermal niche of ectotherms, excessive activity may lead to energy balance issues. These findings highlight the importance of considering nocturnal warming as a factor affecting ectotherms' life history in the context of global climate change.
JOURNAL OF ANIMAL ECOLOGY
(2021)
Article
Ecology
Mathias Dezetter, Andreaz Dupoue, Jean-Francois Le Galliard, Olivier Lourdais
Summary: The study reveals that individuals affected by thermal conditions during the juvenile life stage show changes in metabolic rate and water loss persisting until adulthood, indicating the flexibility of long-lived organisms in adapting to climate change. The research also suggests that physiological syndromes in individuals could play a role in their response to climate change alongside plasticity.
FUNCTIONAL ECOLOGY
(2022)
Article
Ecology
Josefa Bleu, Sandrine Meylan, Jean Clobert, Manuel Massot
Summary: Grandmaternal age at reproduction can affect the characteristics, survival, and reproductive performance of grandoffspring in wild populations, independent of maternal age.
FUNCTIONAL ECOLOGY
(2022)
Article
Multidisciplinary Sciences
Alexis Y. Dollion, Sandrine Meylan, Olivier Marquis, Mathieu Leroux-Coyau, Anthony Herrel
Summary: In many animals, males use color signals to convey information and mitigate harmful interactions. However, the ability to change color in this context has not received much attention. In this study, male panther chameleons were found to exhibit specific color changes in the visible spectrum during intrasexual agonistic interactions. These color changes play a prominent role in communication, while UV coloration does not seem to be involved in these interactions.
Article
Biology
Mathias Dezetter, Jean-Francois Le Galliard, Mathieu Leroux-Coyau, Francois Brischoux, Frederic Angelier, Olivier Lourdais
Summary: Heatwaves and droughts, which are becoming more intense and frequent due to climate change, can have additive effects on the physiological stress and behavioral responses of organisms. This study experimentally investigated the combined impacts of simulated heatwave and drought on the asp viper. The results showed that the combination of heatwave and water deprivation exacerbated physiological stress and influenced dehydration behaviors.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Ecology
Arnaud Badiane, Andreaz Dupoue, Pauline Blaimont, Donald B. Miles, Anthony L. Gilbert, Mathieu Leroux-Coyau, Anna Kawamoto, David Rozen-Rechels, Sandrine Meylan, Jean Clobert, Jean-Francois Le Galliard
Summary: The study found that the three color signals conveyed information on different aspects of male condition, supporting a multiple message hypothesis. Testosterone only influenced parasitism, suggesting that it does not directly mediate the relationships between color signals and their information content. Additionally, color signals became more saturated in forested habitats, indicating an adaptation to degraded light conditions, and generally brighter in mesic conditions, contradicting the thermal melanism hypothesis.
JOURNAL OF ANIMAL ECOLOGY
(2022)
Article
Physiology
Yann Voituron, Damien Roussel, Jean-Francois Le Galliard, Andreaz Dupoue, Caroline Romestaing, Sandrine Meylan
Summary: This study examines the effects of stress on metabolism and mitochondrial functionality in lizards using the application of corticosterone. The results show that while skeletal muscle is not impacted, there is a time-dependent regulation of liver mitochondrial functionality under stress. The study also reveals the response mechanism of mitochondria to energy demands.
JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY
(2022)
Article
Multidisciplinary Sciences
Andreaz Dupoue, Pauline Blaimont, Frederic Angelier, Cecile Ribout, David Rozen-Rechels, Murielle Richard, Donald Miles, Pierre de Villemereuil, Alexis Rutschmann, Arnaud Badiane, Fabien Aubret, Olivier Lourdais, Sandrine Meylan, Julien Cote, Jean Clobert, Jean-Francois Le Galliarde
Summary: This study investigated the relationship between life history, telomere length (TL), and extinction risk in a cold-adapted ectotherm (Zootoca vivipara) facing climate-induced extirpations. The results suggest intergenerational accumulation of accelerated aging rate in declining populations, with most neonates inheriting short telomeres and unlikely to reach recruitment. TL also explained females' reproductive performance at adulthood.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Beth A. Reinke, Hugo Cayuela, Fredric J. Janzen, Jean-Francois Lemaitre, Jean-Michel Gaillard, A. Michelle Lawing, John B. Iverson, Ditte G. Christiansen, Inigo Martinez-Solano, Gregorio Sanchez-Montes, Jorge Gutierrez-Rodriguez, Francis L. Rose, Nicola Nelson, Susan Keall, Alain J. Crivelli, Theodoros Nazirides, Annegret Grimm-Seyfarth, Klaus Henle, Emiliano Mori, Gaetan Guiller, Rebecca Homan, Anthony Olivier, Erin Muths, Blake R. Hossack, Xavier Bonnet, David S. Pilliod, Marieke Lettink, Tony Whitaker, Benedikt R. Schmidt, Michael G. Gardner, Marc Cheylan, Francoise Poitevin, Ana Golubovic, Ljiljana Tomovic, Dragan Arsovski, Richard A. Griffiths, Jan W. Arntzen, Jean-Pierre Baron, Jean-Francois Le Galliard, Thomas Tully, Luca Luiselli, Massimo Capula, Lorenzo Rugiero, Rebecca McCaffery, Lisa A. Eby, Venetia Briggs-Gonzalez, Frank Mazzotti, David Pearson, Brad A. Lambert, David M. Green, Nathalie Jreidini, Claudio Angelini, Graham Pyke, Jean-Marc Thirion, Pierre Joly, Jean-Paul Lena, Anton D. Tucker, Col Limpus, Pauline Priol, Aurelien Besnard, Pauline Bernard, Kristin Stanford, Richard King, Justin Garwood, Jaime Bosch, Franco L. Souza, Jaime Bertoluci, Shirley Famelli, Kurt Grossenbacher, Omar Lenzi, Kathleen Matthews, Sylvain Boitaud, Deanna H. Olson, Tim S. Jessop, Graeme R. Gillespie, Jean Clobert, Murielle Richard, Andres Valenzuela-Sanchez, Gary M. Fellers, Patrick M. Kleeman, Brian J. Halstead, Evan H. Campbell Grant, Phillip G. Byrne, Thierry Fretey, Bernard Le Garff, Pauline Levionnois, John C. Maerz, Julian Pichenot, Kurtulus Olgun, Nazan Uzum, Aziz Avci, Claude Miaud, Johan Elmberg, Gregory P. Brown, Richard Shine, Nathan F. Bendik, Lisa O'Donnell, Courtney L. Davis, Michael J. Lannoo, Rochelle M. Stiles, Robert M. Cox, Aaron M. Reedy, Daniel A. Warner, Eric Bonnaire, Kristine Grayson, Roberto Ramos-Targarona, Eyup Baskale, David Munoz, John Measey, F. Andre de Villiers, Will Selman, Victor Ronget, Anne M. Bronikowski, David A. W. Miller
Summary: This study investigates the aging rates and longevity of wild ectothermic tetrapods, showing that they exhibit higher diversity of aging rates compared to endotherms and provide evidence of negligible aging. Protective phenotypes and life-history strategies explain the macroevolutionary patterns of aging.
Article
Evolutionary Biology
Chloe Chabaud, Matthieu Berroneau, Maud Berroneau, Andreaz Dupoue, Michael Guillon, Robin Viton, Rodrigo S. B. Gavira, Jean Clobert, Olivier Lourdais, Jean-Francois Le Galliard
Summary: Thermo-hydroregulation strategies play a key role in determining life-history traits of terrestrial ectotherms. This study on European common lizards found that rainfall and habitat features have a greater impact on geographical variations in morphology and physiology than thermal conditions.
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2022)
Article
Ecology
George A. Brusch, Jean-Francois Le Galliard, Robin Viton, Rodrigo S. B. Gavira, Jean Clobert, Olivier Lourdais
Summary: Climate change and altered rainfall patterns disrupt water availability for species adapted to cold and wet environments. This study found that higher day or night temperatures decrease gestation length and increase energetic demands in common lizards. High nighttime temperatures can burden pregnant mothers already facing resource limitations, potentially explaining declines in warm-margin populations.
Article
Ecology
Mathias Dezetter, Jean-Francois Le Galliard, Olivier Lourdais
Summary: During extreme climate events, ectotherms may use behavioral thermoregulation to buffer thermal stress. However, the effect of behavioral thermoregulation on dehydration risks remains largely unknown. In this study, we investigated the response of asp vipers to changes in air and microhabitat humidity during a simulated heatwave and water deprivation. Our results show that dry air conditions led to physiological dehydration and muscle wasting, but vipers were able to mitigate these effects by selecting a shelter with a moist microclimate. This study provides experimental evidence that active behavioral hydroregulation can alleviate the physiological stress caused by dry spells in ectotherms.
Article
Biology
Chloe Chabaud, George A. Brusch, Anouk Pellerin, Olivier Lourdais, Jean-Francois Le Galliard
Summary: Terrestrial animals have developed strategies to cope with limited drinking water availability, including maintaining hydration through dietary water intake. However, a study on common lizards suggests that they primarily depend on drinking water rather than improving hydration through prey consumption. Consumption of high-quality prey can reduce the energy costs of water deprivation.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2023)