A Comparative Study on the Larval Life History in Two Populations of Hynobius boulengeri from Kyushu, Japan (Amphibia: Urodela)
A Comparative Study on the Larval Life History in Two Populations of Hynobius boulengeri from Kyushu, Japan (Amphibia: Urodela)
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日本九州小鲵（两栖类：Urodela）两个种群幼虫生活史的比较研究
DOI：
10.3105/1345-5834(2008)27
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发表时间：
2008
期刊：
影响因子：
0.9
通讯作者：
M. Matsui
中科院分区：
文献类型：
--
作者：
K. Nishikawa;M. Matsui
摘要我们比较了来自日本九州的两个种群的幼虫生活史，一个来自Sobo-Katamuki山脉的Takchiho，另一个来自大美半岛的Kinko。它们在生活史上表现出差异，这似乎部分是由水温和食物可获得性的差异引起的，但也可能反映了遗传水平的差异。在冬季水温较低的高知町，幼虫发育较慢，但在夏季温度较高时生长较快，并通过捕食较大的猎物而不是来自Kinko的幼虫。在高知町，大多数幼虫越冬一次或两次，有一次为三次。相反，更多的幼虫在Kinko没有越冬就变态了。高知町幼虫在变态时(平均SVL=约39 mm)比Kinko幼虫(约31 mm)大，这种差异被认为影响了成虫的体型差异。高知浩幼虫相对较大的嘴被认为是对较大猎物的适应，而不是对同类相食的适应。Kinko幼虫的嘴相对较小，这在布伦盖里血吸虫种群及其盟友Hirosei幼虫中是独一无二的，似乎也受到遗传因素的限制。
ABSTRACT We compared larval life history between two populations of Hynobius boulengeri from Kyushu, Japan, one from Takachiho on the Sobo-Katamuki Mountains and the other from Kinko on the Osumi Peninsula. They showed variation in life history which seems to be induced partially by differences in water temperature and food availability, but may also reflect differences at the genetic level. Larvae from Takachiho, where the water temperature was lower in winter, developed more slowly but grew more quickly under higher summer temperatures and by eating larger prey than larvae from Kinko. In Takachiho, most larvae overwintered once or twice, and in one case, three times. In contrast, larger numbers of larvae metamorphosed without overwintering in Kinko. Takachiho larvae were larger at metamorphosis (SVL=ca 39 mm in average) than Kinko larvae (ca. 31 mm), and this difference is thought to affect the body size difference in adults. The relatively large mouth in Takachiho larvae is thought to be an adaptation not to cannibalism, but to larger prey. The relatively small mouth in Kinko larvae, unique among larvae of H. boulengeri populations and its ally, H. hirosei, seems to be also constrained by genetic factors.
日本九州岛的 Hynobius boulengeri 和 H.stejnegeri（两栖类：有尾目）的生化系统发育和历史生物地理学。
DOI：
--
发表时间：
2005
期刊：
Herpetologica 61・1
影响因子：
--
作者：
Nishikawa;K. et al.
通讯作者：
K. et al.