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首页> 外文期刊>Fisheries Science >Habitat utilization, feeding, and growth of wild spotted halibut Verasper variegatus in a shallow brackish lagoon: Matsukawa-ura, northeastern Japan
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Habitat utilization, feeding, and growth of wild spotted halibut Verasper variegatus in a shallow brackish lagoon: Matsukawa-ura, northeastern Japan

机译：淡咸咸水泻湖中野生斑点大比目鱼Verasper variegatus的栖息地利用，摄食和生长：日本东北松川浦

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摘要

Habitat utilization, feeding, and growth of a rare pleuronectid flatfish, spotted halibut Verasper variegatus, were examined in a brackish lagoon in northeastern Japan: Matsukawa-ura. The distribution and date–length data of spotted halibut collected mainly from beam-trawl samplings during 1983–2008 indicated that age-0 juveniles [n = 25, 6.0–18.0 cm total length (TL)] and older spotted halibut (n = 71, 13.8–43.0 cm TL) inhabited almost the entire northern part of Matsukawa-ura. Comparative distribution surveys of spotted halibut, stone flounder, and marbled flounder during 1985–1989 revealed similar distribution patterns of these flatfishes; the highest densities were found around the central part of Matsukawa-ura, although significantly lower abundance was detected for spotted halibut. Linear growth equations of age-0 juveniles demonstrated that spotted halibut were able to achieve high growth after June, probably because abundant prey (e.g., mysids and gammarids) and suitable physical conditions (warmer water temperature and lower salinity) were present. The main prey items shifted from various crustaceans including mysids, caridean shrimps, and anomurans to brachyura Hemigrapsus spp. (≥20 cm TL). Our study shows that spotted halibut use the shallow brackish lagoon as an important nursery for juveniles, and also as a feeding ground for young and adults.
机译：在日本东北部的一个咸淡水泻湖松川浦村，研究了一种稀有的胸膜鳞茎比目鱼（斑比目鱼Verasper variegatus）的栖息地利用，摄食和生长。斑点大比目鱼的分布和日期长度数据主要是从1983年至2008年的束拖网抽样中收集到的，表明0岁以下的少年[n = 25，总长（TL）为6.0-18.0 cm（n = 25），年龄较大的斑点大比目鱼（n = 71） ，约13.8–43.0厘米TL）栖息在松川浦整个北部地区。 1985-1989年间对斑节大比目鱼，石比目鱼和大理石比目鱼的比较分布调查表明，这些比目鱼的分布方式相似。尽管发现斑节大比目鱼的丰度明显降低，但在松川浦中部附近的密度最高。 0岁龄未成年人的线性生长方程表明，斑节大比目鱼能够在6月之后实现高生长，这可能是因为存在大量的猎物（例如，类胡萝卜素和γ-线虫）和适当的物理条件（水温升高和盐度降低）。主要猎物从各种甲壳类动物转变为包括甲壳类动物，硬壳类虾和无尾类动物，而到布拉希拉希米拉普苏斯菌种。 （≥20厘米TL）。我们的研究表明，斑比目大比目鱼将浅咸的咸水湖用作青少年的重要苗圃，并作为年轻人和成年人的觅食场。

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