出版社：Department of Anthropology, University of Durham
摘要：TheSouthAmericansealion(Otaria flavescens)wasseverelyexploited for bodypartsinArgentina and the Falkland Islands, causingsharp declinesof90-93%..Population genetictheory predictssmallerpopulations losegeneticvariationat a fasterrate due to the amplified effectsofdrift..Fisheriesinteractions, extremepolygynyand slow populationgrowthrate were also hypothesized to slow recoveryand limit variation..Geneticconsequences ofthe declineandeffectof sustainedsmallisland populationsize ongeneticdiversitywere examined..Limitedgene flowandstrong geographicstructuring between themainlandandislandwerealsopredicteddue tofemale philopatry,divergent foragingnichesand isolationbydistance
