本文主要研究内容
作者陈凯（2019）在《海南引进尼罗鳄（Crocodylus niloticus）和暹罗鳄（Crocodylus siamensis）繁殖特性的研究》一文中研究指出：尼罗鳄(Crodylus niloticus)和暹罗鳄(Crocodylus siamensis)在我国均为国外引进繁育的物种。本文研究了我国海南引进的尼罗鳄和暹罗鳄的繁殖生物学相关参数特征,以期分析引进鳄类在我国南方的适宜性,并为我国开展人工繁育条件下鳄类商业利用的合法性提供科学依据。本文以海南三亚鳄鱼养殖场(具备国家林业局繁殖许可证)引进的暹罗鳄和尼罗鳄所产出的卵及幼鳄(刚出孵的鳄鱼)为研究对象,总共获得了尼罗鳄卵1574枚,幼鳄644尾,暹罗鳄卵2205枚,幼鳄588尾。对鳄鱼卵的特征变量进行了统计分析,得到新生境下尼罗鳄和暹罗鳄鳄卵参数:尼罗鳄鳄卵长径正常值范围在7.57±0.41cm,卵短径在4.52±0.18cm,卵重在95.49±11.51g,窝卵质量在3853.8±1177.86g,窝卵数大小在40.36±10.00枚卵,平均窝卵数卵质量在94.66±10.65克;暹罗鳄的卵长径在8.01±0.29cm,卵短径在5.01±0.17cm,卵重在119.04±25.79克,窝卵质量在4665.2±928.2克,窝卵数大小在39.38±7.18枚卵,平均窝卵质量在118.47±8.23克。通过偏相关分析,结果表明:尼罗鳄卵长径与卵重之间呈较强正相关(R~2=0.707,P<0.001),短径与卵重间呈较强正相关(R~2=0.664,P<0.001);暹罗鳄卵长径与卵重之间呈较强正相关(R~2=0.504,P<0.001),短径与卵重间呈较强正相关(R~2=0.683,P<0.001),回归分析用于建立卵长径,卵短径和卵重之间的线性方程;同时,发现尼罗鳄幼鳄与鳄卵重间呈较强正相关(R~2=0.963,P<0.001),暹罗鳄幼鳄与鳄卵重间呈较强正相关(R~2=0.944,P<0.001),并建立线性方程用于评估鳄鱼卵重和幼鳄初始重量之间的联系;并且发现尼罗鳄和暹罗鳄窝卵数和鳄卵特征之间没有显著的相关关系。通过对比分析发现,尼罗鳄在海南的产卵季节(3月至5月)交配时间与原产地津巴布韦地区(8月至10月)之间有明显的差异。通过使用两独立样本t检验分析数据所示,圈养条件下尼罗鳄在其原生栖息地中的窝卵数大小(47枚/窝)和鳄卵重的平均值(105g)均大于引入后的区域;虽然暹罗鳄的产卵时间与其原产地相近,但引入海南鳄的窝卵数大小和鳄卵重的平均值均大于其原生区域;同时,无论是尼罗鳄还是暹罗鳄其在人工饲养的条件下孵化率都显著高于其原产地(P<0.05)。说明海南引进的尼罗鳄和暹罗鳄均能够很好的繁殖,暹罗鳄繁殖特性甚至优于其在原生栖息地,该结果为我国商业利用这两种鳄类提供了科学依据。
Abstract
ni luo e (Crodylus niloticus)he xian luo e (Crocodylus siamensis)zai wo guo jun wei guo wai yin jin fan yo de wu chong 。ben wen yan jiu le wo guo hai na yin jin de ni luo e he xian luo e de fan shi sheng wu xue xiang guan can shu te zheng ,yi ji fen xi yin jin e lei zai wo guo na fang de kuo yi xing ,bing wei wo guo kai zhan ren gong fan yo tiao jian xia e lei shang ye li yong de ge fa xing di gong ke xue yi ju 。ben wen yi hai na san ya e yu yang shi chang (ju bei guo jia lin ye ju fan shi hu ke zheng )yin jin de xian luo e he ni luo e suo chan chu de luan ji you e (gang chu fu de e yu )wei yan jiu dui xiang ,zong gong huo de le ni luo e luan 1574mei ,you e 644wei ,xian luo e luan 2205mei ,you e 588wei 。dui e yu luan de te zheng bian liang jin hang le tong ji fen xi ,de dao xin sheng jing xia ni luo e he xian luo e e luan can shu :ni luo e e luan chang jing zheng chang zhi fan wei zai 7.57±0.41cm,luan duan jing zai 4.52±0.18cm,luan chong zai 95.49±11.51g,wo luan zhi liang zai 3853.8±1177.86g,wo luan shu da xiao zai 40.36±10.00mei luan ,ping jun wo luan shu luan zhi liang zai 94.66±10.65ke ;xian luo e de luan chang jing zai 8.01±0.29cm,luan duan jing zai 5.01±0.17cm,luan chong zai 119.04±25.79ke ,wo luan zhi liang zai 4665.2±928.2ke ,wo luan shu da xiao zai 39.38±7.18mei luan ,ping jun wo luan zhi liang zai 118.47±8.23ke 。tong guo pian xiang guan fen xi ,jie guo biao ming :ni luo e luan chang jing yu luan chong zhi jian cheng jiao jiang zheng xiang guan (R~2=0.707,P<0.001),duan jing yu luan chong jian cheng jiao jiang zheng xiang guan (R~2=0.664,P<0.001);xian luo e luan chang jing yu luan chong zhi jian cheng jiao jiang zheng xiang guan (R~2=0.504,P<0.001),duan jing yu luan chong jian cheng jiao jiang zheng xiang guan (R~2=0.683,P<0.001),hui gui fen xi yong yu jian li luan chang jing ,luan duan jing he luan chong zhi jian de xian xing fang cheng ;tong shi ,fa xian ni luo e you e yu e luan chong jian cheng jiao jiang zheng xiang guan (R~2=0.963,P<0.001),xian luo e you e yu e luan chong jian cheng jiao jiang zheng xiang guan (R~2=0.944,P<0.001),bing jian li xian xing fang cheng yong yu ping gu e yu luan chong he you e chu shi chong liang zhi jian de lian ji ;bing ju fa xian ni luo e he xian luo e wo luan shu he e luan te zheng zhi jian mei you xian zhe de xiang guan guan ji 。tong guo dui bi fen xi fa xian ,ni luo e zai hai na de chan luan ji jie (3yue zhi 5yue )jiao pei shi jian yu yuan chan de jin ba bu wei de ou (8yue zhi 10yue )zhi jian you ming xian de cha yi 。tong guo shi yong liang du li yang ben tjian yan fen xi shu ju suo shi ,juan yang tiao jian xia ni luo e zai ji yuan sheng qi xi de zhong de wo luan shu da xiao (47mei /wo )he e luan chong de ping jun zhi (105g)jun da yu yin ru hou de ou yu ;sui ran xian luo e de chan luan shi jian yu ji yuan chan de xiang jin ,dan yin ru hai na e de wo luan shu da xiao he e luan chong de ping jun zhi jun da yu ji yuan sheng ou yu ;tong shi ,mo lun shi ni luo e hai shi xian luo e ji zai ren gong si yang de tiao jian xia fu hua lv dou xian zhe gao yu ji yuan chan de (P<0.05)。shui ming hai na yin jin de ni luo e he xian luo e jun neng gou hen hao de fan shi ,xian luo e fan shi te xing shen zhi you yu ji zai yuan sheng qi xi de ,gai jie guo wei wo guo shang ye li yong zhe liang chong e lei di gong le ke xue yi ju 。
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论文作者分别是来自安徽师范大学的陈凯，发表于刊物安徽师范大学2019-07-10论文，是一篇关于尼罗鳄论文,暹罗鳄论文,鳄卵论文,幼鳄论文,繁殖论文,安徽师范大学2019-07-10论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自安徽师范大学2019-07-10论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。