On the age and growth of the labroid fish Halichoeres poecilopterus from the Seto Naikai, Japan
On the age and growth of the labroid fish Halichoeres poecilopterus from the Seto Naikai, Japan
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日本濑户内海唇形鱼 Halichoeres poecilopterus 的年龄和生长
DOI：
10.2331/suisan.57.1457
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发表时间：
1991
影响因子：
0.4
通讯作者：
S. Kakuda
中科院分区：
文献类型：
--
作者：
H. Hashimoto;K. Gushima;S. Kakuda
根据1981~1984年在Seto Nikai采集的标本，通过观察鳞片，估算了Seto Nikai的拉伯鱼Halichoeres poecilopterus的年龄和生长。根据我们的研究结果，在1月至4月的冬眠期，每种鳞片每年形成一次环状结构。根据雌性性腺指数的时间波动，该种在初夏从6月下旬到7月产卵。用边际生长指数估算，1、2、3、4、5龄的标准体长分别为61、86、106、124和140 mm。鱼的一般生长由BERTALANFFY描述的下列公式表示：Lt(Mm)=234.8{1-e-0.151(t-0.986)}。该种的体长(Mm)与体重(G)的关系式为：W=4.886×10-6L3.280。因此，渐近权重估计为291.6g。1983年12月和1984年12月采集的幼龄幼体平均标准长度分别为42.4 mm和42.3 mm。预计12月份初夏反算的一岁鱼标准长度为44.7 mm。反算的一周岁幼崽的标准长度几乎等于它们的实际标准长度。
The age and growth of the labroid fish Halichoeres poecilopterus from the Seto Naikai were estimated by examining the scales based on the specimens collected from the Seto Naikai from 1981 to 1984. With respect to the results of our study, one annulus of each scale is formed once a year in the hibernating period from January to April. This species spawns in early summer from late June to July, based on the temporal fluctuation in gonad index of the female. At the age of 1, 2, 3, 4 and 5 years old, the fishes are 61, 86, 106, 124 and 140mm in standard length, respectively, as estimated by the marginal growth indices. The general growth of the fish is presented by the following formula described by BERTALANFFY: Lt(mm)=234.8{1-e-0.151(t-0.986)}. The length(mm)-weight (g) relationship of this species is given by the formula, W=4.886×10-6L3.280. Consequently the asymptotic weight is estimated as 291.6g. The mean standard length of the immature yearlings collected in December, 1983 and 1984, were 42.4 and 42.3mm, respectively. The back-calculated standard lengths of yearling fishes in early summer are expected to be 44.7mm in December. The back-calculated standard lengths of the yearling are almost equal to their actual standard length.