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桂西南中越边境地区的蛇类 总被引:1,自引:0,他引:1
广西西南部中越边境地区现已知有蛇类5科66种,其中黑头海蛇(Hydrophis melanocephalus)为广西蛇类新纪录。腹斑水蛇(Enhydris bocourti)在该地区的分布纪录应为可疑记录,需作进一步调查。 相似文献
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蛇类的安全越冬十分重要 ,是人工养蛇成败的关键的一环 ,不论采取什么方法 ,都要严防敌害 ,如鼠类、刺猬、猫头鹰、黄鼠狼等。在其冬眠之前必须供应充足多样的食物 ,以利积累足够的脂肪 ,提高抗寒抗病能力 ,为安全越冬创造有利条件。蛇类安全越冬可采取下列方法。1 蛇箱越冬法 在木箱底部铺一层 2 0 cm厚的细沙 ,把眠蛰的蛇放于沙层上 ,再铺沙 2 0 cm ,再放一层蛇 ,如此反复多次 ,直到木箱装满盖好为止 ,然后把木箱置于2~ 5℃的室内 ,待到第二年春暖时 ,将蛇箱搬入蛇场内让蛇自行爬出2 钻孔修巢越冬法 在蛇场内用铁钎钻深孔 ,让蛇… 相似文献
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The hot-spring snakes,Thermophis, were previously known only from the Tibet Autonomous Region and Western Sichuan, China. During the past two years, three adult hot-spring snakes (2 females, 1 male) were sampled in Shangri-La, northern Yunnan, China, thus expanding their known distribution region towards the southeast. This site is the southeastern-most corner of the Tibetan Plateau and the southernmost tip of the Hengduan Mountains (Mts.). Phylogenetic analysis of mitochondrial (mt) and nuclear (n) DNA segments suggested that the three specimens belong to the genus ofThermophis. Morphologically, the new species is more similar toT. zhaoermii. However, it is distinguished fromT.zhaoermiiin the number of maxillary teeth (15), distance between the two eyes/head width, rostral width/height, mental width/height, in one character limited to female: head width/length, and in four characters restricted to male: occurrence of the reduction from 10 to 8 (8 to 6, 6 to 4) scales in each dorsal row on the tail. There are differences in morphology, genetics (mtDNA, nDNA), and geography between the putative new species andT.zhaoermii,the new species meets our proposed eclectic and feasible "four-differences" rule. 相似文献
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