Larval Mortality and Subsequent Year-Class Strength in the Plaice (Pleuronectes platessa L.)
Larval Mortality and Subsequent Year-Class Strength in the Plaice (Pleuronectes platessa L.)
复制标题
鲽 (Pleuronectesplatessa L.) 幼虫死亡率和随后的年级强度
DOI：
10.1007/978-3-642-65852-5_2
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发表时间：
1974
期刊：
影响因子：
--
通讯作者：
S. Lockwood
中科院分区：
文献类型：
--
作者：
R. Bannister;D. Harding;S. Lockwood
一个种群自我更新的能力取决于成熟种群的年龄结构、生长和繁殖力。如果这包括大量的成熟年龄组，缓慢生长到相对较大的尺寸，并且繁殖力高，则相应的高产卵量，大大超过最终补充成成虫的数量，意味着发生适当高的卵和幼虫死亡率。由于鸡蛋产量在未开发状态和严重开发状态之间的平衡种群规模的可能范围内可能是可变的，正是补充前死亡率的确切性质，通过相应的种群和补充关系，或缺乏这种关系，决定了种群的稳定性，并影响其对开发影响的抵抗力。
The ability of a population to replace itself is determined by the age structure, growth and fecundity of the mature stock. Where this comprises a large number of mature age groups, with slow growth to a relatively large size, and where fecundity is high, the correspondingly high egg production, greatly in excess of the ultimate recruitment to the adult stock, implies the occurrence of appropriately high egg and larval mortality rates. Since egg production is potentially variable over the possible range of equilibrium stock size between the virgin state and the heavily exploited state, it is the precise nature of the pre-recruit mortality which, through the corresponding stock and recruitment relation, or lack of it, determines the stability of the stock and influences its resistance to the effects of exploitation.