Population viability analysis of small population:a case study for Asian elephant in China
作者机构：College of Life SciencesBeijing Normal UniversityBeijingChina
出 版 物：《Integrative Zoology》 (整合动物学（英文版）)
年 卷 期：2020年第15卷第5期
页 面：350-362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：the National Nature Science Foundation of China
主 题：Asian elephant corridor construction genetic diversity human-elephant conflict population viability analysis
摘 要：Small populations are at risk of extinction from deterministic and stochastic *** than 250 Asian elephants(Elephas maximus)remain in China,and are distributed in a few isolated areas;yet,population viability analyses of this endangered population have not been ***,the current genetic status of the Pu’Er-Mengyang Asian elephant populations in China was analyzed,and the risk of extinction was predicted over the next 500 *** affecting the viability of this population were determined through *** genetic diversity of the population was very low(mean allele number:3.1;expected heterozygosity:0.463),even though a recent population bottleneck was not *** effective population size was approximately 24.1 adult *** adult breeding individuals exist to maintain population *** simulation model showed that this population would not go extinct in the next 500 ***,illegal poaching and harvesting could negatively affect population size.A sensitivity analysis showed that the mean stochastic growth rate of the study population is sensitive to sex ratio,number of breeding females,mortality of females of different age classes,carrying capacity,and lethal *** on our results,we suggest that action should be taken to alleviate inbreeding and any further loss of genetic diversity,by connecting fragmented elephant habitat or by translocating individual *** addition,human–elephant conflict should be mitigated using various modern approaches,including crop guarding techniques,and by encouraging farmers to switch to crops and income sources not vulnerable to elephant raids.
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