Is metamorphosis a critical interval in the early life of marine fishes?
Is metamorphosis a critical interval in the early life of marine fishes?
复制标题
变态是海洋鱼类早期生命的关键时期吗？
DOI：
10.1007/bf00002180
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发表时间：
1994
影响因子：
1.4
通讯作者：
K. Thorisson
中科院分区：
文献类型：
--
作者：
K. Thorisson
在鳕鱼变态过程中，胃里的食物数量很少，空腹的比例很大，猎物的最大尺寸很小，所有这些都表明在这一发育阶段存在能量危机。10-14 mm长的鳕鱼发育中的胃较小，可能是造成上述变态困难的部分原因。在Hjort的“临界阶段理论”的基础上提出了一个假说，在变态时增加了另一个临界区间。根据已有的鳕鱼数据和文献中关于其他物种的报道，讨论了海水鱼类幼体的新的临界间隔。
Small volumes of food in ‘stomach’, large proportions of empty ‘stomachs’ and small maximum sizes of prey during metamorphosis of cod,Gadus morhua, all point to an energy crisis during this developmental interval. The small size of the developing stomach of the 10–14 mm long cod may be partly responsible for the above mentioned difficulties during metamorphosis. A hypothesis based on Hjort's ‘critical stage theory’ is proposed, adding another critical interval at metamorphosis. Based on the presented data on cod and reports on other species in the literature, the new critical interval is discussed for larvae of marine fish species in general.