Differences in growth between maturing and non-maturing male Atlantic salmon, Salmo salar L., parr.
Differences in growth between maturing and non-maturing male Atlantic salmon, Salmo salar L., parr.
复制标题
成熟和非成熟雄性大西洋鲑鱼 (Salmo salar L., parr) 之间的生长差异。
DOI：
10.1111/j.1095-8649.1990.tb04319.x
复制
发表时间：
1990
影响因子：
2
通讯作者：
J. Thorpe
中科院分区：
文献类型：
--
作者：
D. Rowe;J. Thorpe
兄弟姐妹雄性大西洋鲑鱼幼鱼成熟往往是较大的鱼在1月，但他们的每月特定增长率之间的1月和7月没有不同的非成熟的鱼。成熟的鱼有较低的条件因素在3月，但更大的条件因素在4月期间增加，超过那些不成熟的男性5月。在成熟的男性，7月和9月之间的摄食率，在8月和9月的特定增长率，低于未成熟的鱼。因此，到十月份，未成熟个体的平均大小等于或超过成熟雄性的平均大小。成熟率与平均条件因子的增加仅在4月份密切相关。
Sibling male Atlantic salmon parr that matured tended to be the larger fish in January, but their monthly specific growth rates between January and July did not differ from those of non-maturing fish. Maturing fish had lower condition factors in March, but greater increases in condition factor during April, exceeding those of non-maturing males by May. In maturing males, feeding rates between July and September, and specific growth rates in August and September, were lower than those of immature fish. Consequently, the mean size of immatures equalled or exceeded that of maturing males by October. Maturation rates were strongly correlated with increases in mean condition factor only during April.