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| 1 | Interaction between animal personality and animal cognition显示文摘 | Claudio CARERE Charles LOCURTO | 2011 | Current Zoology2011，57，4： | 5 |
| 2 | Relationships between personality traits and the physiological stress response in a wild mammal显示文摘Glucocorticoids(GCs)are involved in the regulation of an animal's energetic state.Under stressful situations,they are part of the neuroendocrine response to cope with environmental challenges.Animals react to aversive stimuli also through behavioral responses,defined as coping styles.Both in captive and wild populations,individuals differ in their behavior along a proactive-reactive continuum.Proactive animals exhibit a bold,active explorative and social personality,whereas reactive ones areshy,less active-explorative and less social.Here,we test the hypothesis that personality traits and physiological responses to stressors covary,with more proactive individuals having a less pronounced GC stress response.In wild populations of invasive gray squirrels Sciurus carolinensis,we measuredfecal glucocorticoid metabolites(FGMs),an integrated measure of circulating GCs,and 3 personality traits(activity,sociability,and exploration)derived from open field test(OFT)and mirror image stimulation(MIS)test.Gray squirrels had higher FGMs in Autumn than in Winter and males with scrotal testes had higher FGMs than nonbreeding males.Personality varied with body mass and population density.Squirrels expressed more activity exploration at higher than at lower density and heavier squirrels had higher scores for activity exploration than animals that weighed less.Variation in FGM concentrations was not correlated with the expression of the 3 personality traits.Hence,our results do not support a strong association between the behavioral and physiological stress responses but show that in wild populations,where animals experience varying environmental conditions,the GC endocrine response and the expression of personality are uncorrelated traits among individuals. | Francesca SANTICCHIA Lucas A.WAUTERS Ben DANTZER Sarah E.WESTRICK Nicola FERRARI Claudia ROMEO Rupert PALME Damiano G.PREATONI Adriano MARTINOLI | 2020 | Current Zoology2020，66，2： | 2 |
| 3 | Natal dispersal in a social landscape: Considering individual behavioral phenotypes and social environment in dispersal ecology显示文摘 | Tina W. WEY Orr SPIEGEL Pierre-Olivier MONTIGLIO Karen E. MABRY | 2015 | Current Zoology2015，61，3： | 1 |
| 4 | Telomere shortening is associated with corticosterone stress response in adult barn swallows显示文摘When vertebrates face stressful events,the hypothalamic–pituitary–adrenal(HPA)axis is activated,generating a rapid increase in circulating glucocorticoid(GC)stress hormones followed by a return to baseline levels.However,repeated activation of HPA axis may lead to increase in oxidative stress.One target of oxidative stress is telomeres,nucleoprotein complexes at the end of chromosomes that shorten at each cell division.The susceptibility of telomeres to oxidizing molecules has led to the hypothesis that increased GC levels boost telomere shortening,but studies on this link are scanty.We studied if,in barn swallows Hirundo rustica,changes in adult erythrocyte telomere length between 2 consecutive breeding seasons are related to corticosterone(CORT)(the main avian GC)stress response induced by a standard capture-restraint protocol.Within-individual telomere length did not significantly change between consecutive breeding seasons.Second-year individuals showed the highest increase in circulating CORT concentrations following restraint.Moreover,we found a decline in female stress response along the breeding season.In addition,telomere shortening covaried with the stress response:a delayed activation of the negative feedback loop terminating the stress response was associated with greater telomere attrition.Hence,among-individual variation in stress response may affect telomere dynamics. | Alessandra COSTANZO Roberto AMBROSINI Marco PAROLINI Manuela CAPRIOLI Simona SECOMANDI Diego RUBOLINI Leonida FUSANI Virginie CANOINE | 2022 | Current Zoology2022，68，1： | 0 |
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