Environmental temperature during early life affects the personality of mosquitofish in adulthood  

作　　者：Haifeng LI Xinyu ZHANG Yi WU Feng ZHANG Chunlin LI 

机构地区：[1]School of Resources and Environmental Engineering,Anhui University,Hefei 230601,China [2]Ministry of Ecology and Environment,Nanjing Institute of Environmental Sciences,Nanjing 210042,China

出　　处：《Current Zoology》2021年第5期481-488,共8页动物学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(grant numbers 31970500,31770571,and 31301897);the Open Fund for Discipline Construction from the Institute of Physical Science and Information Technology,Anhui University,and Biodiversity Investigation,Observation;Assessment Program of Ministry of Ecology and Environment of China.

摘　　要：Personality has been observed in a variety of animal taxa with important implications in ecology and evolution.Exploring the influence of environmental temperature during early life on personality could help to understand the ontogeny of this phenotypic trait in animals.In this study,we reared newborn mosquitofish Gambusia affinis at high(30C)and low(25C)water temperatures and measured their shyness and exploration upon sexual maturity.We tested the repeatability of each behavioral trait;the correlation between them;and the effects of rearing temperature,sex,and body length on the behaviors.When growing up at low temperatures,female fish exhibited repeatability in shyness and exploration,and males exhibited marginal repeatability in shyness.However,neither of the 2 behaviors were repeatable when the fish were reared at high temperatures.There was a negative correlation between shyness and exploration,indicating that the 2 behaviors comprise a behavioral syndrome in this species.Mosquitofish reared at high temperatures were more explorative than those reared at low temperatures,while there was no difference in shyness between the 2 treatments.Body length and sex had no significant effects on the average values of the 2 behaviors.The results indicate that environmental temperature during early life could shape the personality of mosquitofish and modify the average of the behavioral traits.These findings might provide insights to understand the ontogeny of animal personality and how changes in environmental temperature influence animal dispersal by shaping their personality.

关 键 词：behavioral consistency behavioral syndromes BOLDNESS exploration REPEATABILITY SHYNESS 

分 类 号：Q95[生物学—动物学]