Short-term Occurrence and Rapid Growth of Spanish mackerel Larvae in the Central Waters of the Seto Inland Sea, Japan.
Short-term Occurrence and Rapid Growth of Spanish mackerel Larvae in the Central Waters of the Seto Inland Sea, Japan.
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日本濑户内海中部水域鲭鱼幼体的短期发生和快速生长。
DOI：
10.2331/fishsci.65.68
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发表时间：
1999
影响因子：
1.9
通讯作者：
Masaru Tanaka
中科院分区：
文献类型：
--
作者：
J. Shoji;Tsutomu Maehara;Masaru Tanaka
为了调查日本鲅鱼蓝点马鲛在濑户内海的早期生活史，对1995年和1996年在日本日内那田采集的野生样本的丰度、发生、食性和幼虫生长进行了研究。此外，还在实验室条件下对鲅鱼幼鱼耳石微结构的形成速率进行了测定。日本鲅鱼在中央沃茨的濑户内海似乎已经演变成一个生殖策略的短期产卵时间，以对应于季节性高峰丰富的猎物。日本马鲛几乎完全以鱼类为食，其最重要的猎物是体型细长的鲱形目幼体。日本的西班牙mack erel卵和幼虫的发生是有限的，在5月下旬至6月上旬的高峰丰度，对应于一个高峰丰度的鲱形目幼虫。对70尾野生仔稚鱼的年龄估算表明，在孵化后4 ~ 20天，其平均生长速率为1.03 mm/d，明显高于大多数沿海鱼类的生长速率。
To investigate the early life history of Japanese Spanish mackerel Scomberomorus niphonius in the Seto Inland Sea, abundance, occurrence, feeding habits, and growth of larvae were examined from wild specimens collected in Hiuchi-nada in 1995 and 1996. In addition, Japanese Spanish mackerel were reared in the laboratory to determine the rate of otolith microstructual increment formation during ear ly stages. Japanese Spanish mackerel in the central waters of the Seto Inland Sea appear to have evolved a reproductive strategy of short-term spawning timed to correspond to the seasonal-peak abundance of their prey. Japanese Spanish mackerel laevae were almost exclusively piscivorous and their most im portant prey was Clupeiformes larvae with slender body form. Occurrence of Japanese Spanish mack erel eggs and larvae was restricted with a peak abundance in late May to early June, corresponding with a peak abundance of Clupeiformes larvae. Age estimation for 70 wild larvae and early juveniles rev ealed a mean growth rate of 1.03 mm/day between 4 and 20 days after hatching, which appears to be markedly higher than those from most of coastal marine fishes.