Larvae and juveniles of blue drum,Nibea mitsukurii, occurring in the surf zone of Tosa Bay, Japan
Larvae and juveniles of blue drum,Nibea mitsukurii, occurring in the surf zone of Tosa Bay, Japan
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日本土佐湾冲浪区的蓝石首鱼 Nibea mitsukurii 的幼虫和幼鱼
DOI：
10.1007/bf02906680
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
S. Fujita
中科院分区：
文献类型：
--
作者：
I. Kinoshita;S. Fujita
1981年5月至1984年6月，在土佐湾碎波带用小型围网共捕获光栗黄姑鱼仔稚鱼211尾（4.0- 19.0mm SL）。其形态特征与石首鱼科的仔、稚鱼相同，但其黑色素细胞在体部和上颌骨前尖棘上的分布模式与其它种类有所区别。从5月中旬到8月中旬，它们只发生在面向土佐湾的三个地点中的Tei冲浪区。采集地点的温度和盐度分别为21.7 - 29.5°C和24.5 - 31.3‰。良好的渔获物时，观察到微小的灰尘漂浮在冲浪区丰富。在过去的研究中，使用传统的幼虫网或小鱼网在土佐湾的沿海或浅水沃茨，幼虫和少年N。mitsukurii没有报道。它们似乎与极浅沃茨（如碎浪带）中的微小尘埃有关。
A total of 211 larval and juvenileNibea mitsukurii (4.0–19.0 mm SL) was collected with a small seine in surf zones of Tosa Bay during the period of May 1981 to June 1984. They had morphological characteristics common to the larvae and juveniles of Sciaenidae, but were distinguished from the others by the distribution pattern of melanophores on body and spines at the anterior tip of maxillary. They occurred only in surf zone of Tei out of three locations facing Tosa Bay from middle May to middle August. Temperatures and salinities at the place when they were collected ranged from 21.7 to 29.5°C and from 24.5 to 31.3‰, respectively. Good catches were observed when minute dusts floated abundantly in the surf zone. In past studies using traditional larval nets or minnow-nets in coastal or shallow waters of Tosa Bay, larval and juvenileN. mitsukurii were not reported. It seems that they occur in association with minute dusts in extremely shallow waters such as surf zones.