Age validation, growth and annual reproductive cycle of chub mackerel Scomber japonicus off the waters of northern Kyushu and in the East China Sea
Age validation, growth and annual reproductive cycle of chub mackerel Scomber japonicus off the waters of northern Kyushu and in the East China Sea
复制标题
九州北部和东海海域鲭鱼的年龄验证、生长和年繁殖周期
DOI：
10.1111/j.1444-2906.2008.01612.x
复制
发表时间：
2008
影响因子：
1.9
通讯作者：
M. Matsuyama
中科院分区：
文献类型：
--
作者：
T. Shiraishi;K. Okamoto;M. Yoneda;Takeshi Sakai;S. Ohshimo;Shizumasa Onoe;A. Yamaguchi;M. Matsuyama
通过对2000年6月至2001年6月在东中国海区和九州北部海域采集的日本鲟鱼经二甲苯浸泡后耳石表面的观察，确定其年龄和生长。确定耳石表面的半透明带和不透明带，并计数半透明带的数目。在耳石边缘有半透明带的鱼的频率的月变化表明，半透明带是在4月至6月之间形成的。通过对已知年龄鱼耳石的观察，明确了耳石形成的季节模式，野生鱼耳石的形成与已知年龄鱼的耳石形成一致。雄鱼和雌鱼的平均性腺指数在3-5月较高，产卵的雌性鱼在3月中旬-5月中旬出现。估计年龄男性为1-5岁，女性为1-6岁。Von Bertalanffy生长参数在雌雄之间没有显著差异。得到的模型为Flt=406x1−exp[−0.372×(t+1.68)]
The age and growth of chub mackerel Scomber japonicus collected from the East China Sea and the northern waters off Kyushu between June 2000 and June 2001 were determined by observing the otolith surface after dipping it in xylene. The translucent and opaque zones on the otolith surface were identified, and the number of translucent zones was counted. Monthly changes in the frequency of fish with translucent zones on the otolith margin, and in the marginal increments, indicated that the translucent zones were formed between April and June. The seasonal pattern of annulus formation on the otolith became clear by observing the otoliths of fish with known ages, and the otolith formation in wild fish was consistent with that of fish with known ages. The mean gonadosomatic index of male and female fish was high from March to May, and spawning females were observed from mid-March to mid-May. The estimated ages were 1–5 years for males and 1–6 years for females. The von Bertalanffy growth parameters did not significantly differ between male and female. The model was obtained as FLt=406×{1−exp[−0.372×(t+1.68)]