Expanding through the Emerald Isle:exploration and spatial orientation of non-native bank voles in Ireland

作     者：Valeria Mazza Jana A.Eccard 

作者机构：Animal EcologyInstitute for Biochemistry and BiologyUniversity of PotsdamMaulbeerallee 114469PotsdamGermany and Department of Ecological and Biological SciencesUniversity of TusciaLargo dell'Università10100 ViterboItaly 

出 版 物：《Current Zoology》 (动物学报（英文版）)

年 卷 期：2024年第70卷第3期

页      面：320-331页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：This study was made possible by funding from the German Science Foundation(DFG) supporting prior steps of the project(grant nr.430970462 to J.A.E.) 

主　　题：animal personality biological invasions exploration behavior Myodes glareolus range expansion spatial orientation. 

摘      要：Whether introduced into a completely novel habitat or slowly expanding their current range,the degree to which animals can effciently explore and navigate new environments can be key to survival,ultimately determining population establishment and colonization *** tested whether spatial orientation and exploratory behavior are associated with non-native spread in free-living bank voles(Myodes glareolus,N=43)from a population accidentally introduced to Ireland a century *** measured spatial orientation and navigation in a radial arm maze,and behaviors associated to exploratory tendencies and risk-taking in repeated open-feld tests,at the expansion edge and in the source *** voles at the expansion edge re-visited unrewarded arms of the maze more,waited longer before leaving it,took longer to start exploring both the radial arm maze and the open feld,and were more risk-averse compared to conspecifcs in the source *** together,results suggest that for this small mammal under heavy predation pressure,a careful and thorough exploration strategy might be favored when expanding into novel environments.