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罗树毅,李树然,岑海瑶.2018.人工繁育与野外鳄蜥幼体及亚成体形态和健康状况的比较.动物学杂志,53(3):368-374.
人工繁育与野外鳄蜥幼体及亚成体形态和健康状况的比较
Comparison of Morphology and Health Status between Captive Breeding and Wild Shinisaurus crocodilurus at Newborn and Sub-adult Stage
投稿时间:2017-09-12  修订日期:2018-04-27
DOI:10.13859/j.cjz.201803006
中文关键词:  鳄蜥  人工繁育  野外种群  形态特征  细菌感染率
英文关键词:Shinisaurus crocodilurus  Captive breeding  Wild population  Morphological traits  Bacterial infection rate
基金项目:国家重点研发计划项目(No. 2016YFC0503200)
作者单位E-mail
罗树毅 广西大桂山鳄蜥国家级自然保护区 854237644@qq.com 
李树然 温州大学生命与环境科学学院 lishuran@wzu.edu.cn 
岑海瑶 广西大桂山鳄蜥国家级自然保护区 308093103@qq.com 
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中文摘要:
      人工繁育是濒危物种保护的重要手段,但是也会改变物种的表型。为了探究人工繁育对于鳄蜥(Shinisaurus crocodilurus)形态和健康状况的影响,本研究比较了人工繁育鳄蜥与野外鳄蜥新生幼体及亚成体形态特征与细菌感染率。结果发现,人工繁育鳄蜥与野外鳄蜥的新生幼体体型无显著差异,而人工繁育鳄蜥亚成体体型显著大于野外鳄蜥;两个年龄段的人工繁育鳄蜥断尾率均显著低于野外鳄蜥;人工繁育鳄蜥亚成体细菌感染率最高,但是各年龄组种群间的差异不显著。本研究表明,人工环境促进了鳄蜥的生长,减少了鳄蜥被捕食的风险,但有增加鳄蜥感染疾病的可能性,因此在鳄蜥的饲养管理中需要加强疾病防治。
英文摘要:
      Captive breeding is an effective strategy for the conservation of endangered species, but it may affect their phenotypes in many cases. To investigate how captive breeding influences morphology and health status of Shinisaurus crocodilurus, we compared the morphological traits and bacterial infection rate for both new hatched ones and sub-adults of Shinisaurus crocodilurus born in captive breeding population and in the wild population. We got the following results: (1) the body size of new born ones was not showed a significant difference between both groups, but the sub-adults born in captive population was larger than those born in wild population by Bonferroni post hoc test (Fig. 1). (2) The tail autotomy rate was significantly lower for those born in captive population at both age stages (Fisher′s exact test, all P < 0.05; Fig. 2a). (3) The Bacterial infection rate was highest in sub-adults born in captive breeding population, but no significant difference was found between the two groups (Fisher′s exact test, all P > 0.05; Fig. 2b). Our study indicates captive breeding has enhanced growth rate, reduced predation risk. However, there is a slightly potential to increase the bacterial infection rate. More cautions should be taken in disease controlling in captive breeding programs for S. crocodilurus.
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