| 摘要: |
| 结合银鲳和小黄鱼流刺网网目选择性试验，对夏季黄海南部沿海三层表层流刺网渔获物组成进行了调查分析。总共鉴定出渔获品种25种，其中优势种为梭子蟹（Portunus triuberbuculatus）、灰鲳（Stomateoides nozawae Ishikawa）和银鲳（Stromatecoides argenteus），分别占总渔获量的59.2%，21.5％和11％，灰鲳体长分布范围为17～30 cm，优势体长范围为21～24 cm，占71.6％；银鲳体长分布范围为13～23 cm，优势体长范围为15～21 cm，占95.8％。数据分析表明，三重流刺网作业网具选择性较差，渔具兼捕种类多，捕获量大，占总渔获量的66.5％；渔获的灰鲳和银鲳处于生长型捕捞期，不利于资源的可持续利用，建议适当改良渔具，避免对其资源造成过度破坏。 |
| 关键词: 三层表层流刺网 渔获物 灰鲳（Stomateoides nozawae Ishikawa） 银鲳（Stromatecoides argenteus） |
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| 基金项目:国家科技支撑计划资助项目(2006BAD09A05；2007BAD43B04)，科技部社会公益专项项目（2005DIB3J029） |
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| Study on the component of gill net catches around the south region of the Yellow Sea in summer |
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| Abstract: |
| Combining with the selectivity research of gill-net, the authors investigated the catches' components of floated-trammel net used by gill-net fishery in the south region of the Yellow Sea, and discriminated 25 species from catches, the dominant species is swimming crab, silver butter-fish and Silvery pomfret ,the weights of the three species take account for 59.2%, 21.5% and 11% of the total production respectively. The length ranges of silver butter-fish are among 17～30 cm,the dominant ranges are 21～24 cm and take account for 71.6% of all the sample; the length range of silver butter-fish are 13～23 cm,the dominant range is 15～21 cm and takes account for 95.8% of all the sample. Based on the datebase,the selectivity of the trammel net fishery is poorver, the species number and the amount of by-catch are too lager. It wassuggested to take some feasible modification on fishery nets for protecting fishery resource. |
| Key words: float-trammel net catches Stomateoides nozawae Ishikawa Stromatecoides argenteus |
