Influence of growth on the biological and commercial productivity of Caspian great sturgeon Huso huso
Influence of growth on the biological and commercial productivity of Caspian great sturgeon Huso huso
复制标题
DOI：
10.1016/j.aquaculture.2020.736139
复制
发表时间：
2021-02-25
期刊：
影响因子：
4.5
通讯作者：
Fazio, Francesco
中科院分区：
文献类型：
--
作者：
Bakhshalizadeh, Shima;Zykov, Leonid Alexandrovich;Fazio, Francesco
渔业管理已从传统的重点扩大到一个更全面的模式，其基础是一个模型，描述在年龄相关的自然死亡率和捕捞影响下鱼类世代数量的变化。我们计算了丰富，生物量，生产，自然，总损失和捕获量从有条件的人口大鲟鱼的补充100万例不同的线性和重量增长率在1931年至1975年期间。结果发现，鱼种的大小有最大的影响的丰度和生物量的条件下，大鲟鱼种群形成的少年。我们发现一年生植物的长度增加了19.3%，有条件的人口，其生产和捕获量增加了2.9倍。因此，在鲟鱼孵化场（SH）中养殖鲟鱼并将大尺寸的大鲟鱼幼鱼释放到大海中将显着提高种群人工繁殖的工作效率。
Fisheries management has expanded from a traditional focus to a more holistic model based on a model describing the change in the number of generations of fish under the influence of age-dependent natural mortality and harvesting. We calculated the abundance, biomass, production, natural, total loss and catches from the conditional population of great sturgeon resulting from the replenishment of 1.0 million instances of fingerlings with different rates of linear and weight growth in the period 1931-1975. It was found that the size of fingerlings has the greatest influence on the abundance and biomass of conditional great sturgeon populations formed from juveniles. We found an increase in the length of annuals of 19.3%, with the biomass of the conditional population, its production and catch size increasing by 2.9 times. Thus, cultivation of sturgeon in sturgeon hatcheries (SH) and the release of large sized great sturgeon juveniles into the sea will significantly increase the efficiency of work of the artificial reproduction of stocks.