Tropical and temperate freshwater amphidromy : a comparison between life history characteristics of Sicydiinae, ayu, sculpins and galaxiids
Tropical and temperate freshwater amphidromy : a comparison between life history characteristics of Sicydiinae, ayu, sculpins and galaxiids
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热带和温带淡水双性：西西丁亚科、香鱼、杜父父鱼和鳀鱼生活史特征的比较
DOI：
10.1007/s11160-013-9316-8
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发表时间：
2014
影响因子：
6.2
通讯作者：
K. TSUKAM OTO
中科院分区：
文献类型：
--
作者：
WATANABE;S.;M. IIDA;C. LORD;P. KEITH;K. TSUKAM OTO
两栖鱼类是一种独特的双栖鱼类，但热带和温带两栖鱼类生活史的差异表明，有两种类型的淡水两栖鱼类。根据西溪虎鱼(Plecoglossus Altivelis)、日本石首鱼(Cottus)和银鱼科(Galaxiidae)的生活史，可以看出西鱼亚科是热带淡水两栖动物的代表，而木鱼、石首和银鱼则是温带淡水两栖动物的代表。所有物种都可能需要在海洋中出现水母幼虫阶段，但Ayu、Sculins和Galaxiids具有内陆或河流形式的幼虫，不需要进入海洋摄食和生长幼虫。这表明西洋参幼虫具有较高的海洋依赖性，而Ayu、Sculins和Galaxiid幼虫对海洋的依赖性较低。热带和温带地区的淡水两栖鱼类在其生活史的演变中似乎发展了两种不同的策略。热带两栖类幼虫阶段的进化方向可能是留在海洋中，温带两栖类幼虫阶段的进化方向可能是有能力在需要时留在淡水中。热带和温带两栖动物似乎是生物信息性的类别，对这一假说的评估将有助于在未来更好地理解各种形式的两栖动物。
Amphidromy is a distinctive form of diadromy, but differences in the life histories of tropical and temperate amphidromous fishes suggest that there are two types of freshwater amphidromy. The life histories of Sicydiinae gobies, ayu (Plecoglossus altivelis), Japanese sculpins (Cottus) and galaxiids (Galaxiidae), suggest that the Sicydiinae are representatives of tropical freshwater amphidromy, whereas ayu, sculpins and galaxiids are representatives of temperate freshwater amphidromy. The Sicydiine larval stage may be required to occur in the ocean for all species, but ayu, sculpins and galaxiids have landlocked or fluvial forms with larvae that do not need to enter the ocean for larval feeding and growth. This suggests that Sicydiine larvae have a high oceanic dependency whereas ayu, sculpins and galaxiid larvae have a low oceanic dependency. Freshwater amphidromous fish in tropical and temperate zones appear to have developed two different strategies in the evolution of their life histories. It is likely that the evolutionary direction of the larval stage of tropical amphidromy is to remain in the sea and that of temperate amphidromy is towards having the ability to remain in freshwater if needed. Tropical and temperate amphidromy appear to be biologically informative categories and evaluations of this hypothesis will facilitate better understanding of the various forms of amphidromy in the future.