Growth and habitat of spotted halibut Verasper variegatus in the shallow coastal nursery area, Shimabara Peninsula in Ariake Bay, Japan
Growth and habitat of spotted halibut Verasper variegatus in the shallow coastal nursery area, Shimabara Peninsula in Ariake Bay, Japan
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DOI：
10.1111/j.1444-2906.2006.01190.x
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发表时间：
2006-06-01
影响因子：
1.9
通讯作者：
Tanaka, M
中科院分区：
文献类型：
--
作者：
Wada, T;Mitsunaga, N;Tanaka, M
为了确定斑比目鱼的生长性能和栖息地特征，在有明湾岛原半岛东南沿海地区进行了连续采样。 2003年5月至2004年4月在蒲贺海滩进行了推网采样，以确定幼鱼和稚鱼的水平分布，而2003年7月至2004年7月在龙石海滩的沿海水域进行了刺网采样，以收集较大的稚鱼和成鱼。总共对 478 条从变态幼鱼到 2 岁鱼（总长 15.2-447.0 毫米 [TL]）的个体进行了采样。其中，2003年5月至2004年6月连续采集2003年级鱼类（15.2-350.0毫米TL；n = 418），2003年3月、6月、9月、2003年12月和2004年5月的平均总长度分别为22.4、82.5、172.5、203.9和296.4毫米。本研究发现，变态幼虫于2003年3月迁移至河口滩涂；新定居的幼鱼栖息于浅潮间带地区；幼鱼在沿海浅海地区的生长速度非常快。据推测，2004 年 5 月至 6 月期间，TL 300 毫米左右的幼鱼从有明湾的育苗地迁移到立花湾周围的更深水域。
To determine the growth performances and habitat characteristics of spotted halibut Verasper variegatus, successive samplings were conducted in the south-eastern coastal area of Shimabara Peninsula in Ariake Bay. The push-net samplings were performed at Kamaga beach from May 2003 to April 2004 to determine the horizontal distribution of larvae and juveniles, while the gill net samplings were done in the coastal waters of Tatsuishi beach from July 2003 to July 2004 to collect the larger juveniles and adults. A total of 478 individuals from metamorphosing larvae to 2-year-old fish (15.2-447.0 mm total length [TL]) were sampled. In particular, the 2003-year class fish were successively collected from May 2003 to June 2004 (15.2-350.0 mm TL; n = 418) and the mean total length in March, June, September, December 2003 and May 2004 was 22.4, 82.5, 172.5, 203.9 and 296.4 mm, respectively. The present study found that metamorphosing larvae migrated into the estuarine tidal flats during March 2003; newly settled juveniles inhabited the shallow intertidal areas; and juveniles had a remarkably high growth in shallow coastal areas. It is suggested that young fish around 300 mm TL migrated from the nursery grounds in Ariake Bay to deeper waters around Tachibana Bay during May-June 2004.