Life history variation among years in a brackish water type of the Ninespine Stickleback, Pungitius pungitius
Life history variation among years in a brackish water type of the Ninespine Stickleback, Pungitius pungitius
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DOI：
10.1007/s10641-010-9656-3
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发表时间：
2010-08-01
影响因子：
1.4
通讯作者：
Goto, Akira
中科院分区：
文献类型：
--
作者：
Arai, Takaomi;Chino, Naoko;Goto, Akira
通过测定耳石中锶和钙的含量，研究了3年多采集的微咸水类型刺梨的生活史变化。生活史显示，这些鱼不是在咸水中生活，就是在那几年里逆流而行。74-78%的鱼有前者的生活史，22-26%的鱼有后者的生活史。每一种生活史的组成在3年内都是恒定的，以前发现的“顺水而行”的小说生活史的出现是该物种的普遍现象。
The life history variation in a brackish water type of the Ninespine Stickleback Pungitius pungitius collected over 3 years was studied by examining the strontium (Sr) and calcium (Ca) concentrations in the otoliths. The life histories showed the fish were either brackish water residents or anadromous throughout those years. 74-78% of the fish had the former life history and 22-26% the latter. The composition of each life history was constant throughout the 3 years, and the occurrence of the "anadromous" novel life history found previously is a general phenomenon in this species.