文章摘要
刘永昌,高永福.黄海中部沿海放流增殖对虾秋汛洄游和分布的初步研究[J].水产学报,1990,14(2):120~128
黄海中部沿海放流增殖对虾秋汛洄游和分布的初步研究
A PRELIMINARY STUDY ON MIGRATION AND DISTRIBUTION PATTERNS OF RELEASED PRAWN IN THE COASTAL WATER OF CENTRAL YELLOW SEA
投稿时间:1988-09-01  修订日期:1989-09-01
DOI:
中文关键词: 增殖  对虾  黄海中部  洄游  分布
英文关键词: enhancement Penaeus orientalis  central Yellow Sea  migration  distribution
基金项目:
作者单位
刘永昌 山东省海洋水产研究所 
高永福 山东省海洋水产研究所 
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中文摘要:
      本文根据增殖对虾标志放流重捕和生产回捕的渔场统计资料、海洋水文及跟踪监测虾群的资料,对放流增殖对虾洄游分布和中心渔场变动进行了研究。据之分析表明:研究期内,每年6月中旬至7月初放流入海的幼对虾,主要生活在放流的湾内河口浅水区,并逐步向周围扩散索饵;8月上、中旬,主群陆续游出湾内的低盐高温区(盐度为28—30‰,温度为25—29℃),洄游分布在湾外5—15米水域;随时间推移,虾群逐渐趋向20米以深的高盐低温区(盐度为31—32.5‰,温度为20—23℃)索饵;10月下旬(底层水温18—19℃)为交尾盛期,11月上旬交尾结束,虾群分散进入越冬场。
英文摘要:
      By analysing a series of statistics of marked-and-recaptured prawns, the records of recaptured prawns in fishing grounds, monitoring of the migration and distribution of the released prawns and the hydrology of the seven area bays along the coast of central yellow sea, the distribution and migration of the released prawn population and the variation of central fishing ground were studied and described.The results show that every year in the middle of June and beginning of July, the newly released young prawns mainly inhabit in the shallow estuary of the bay, and gradually they disperse to surrouding vicinity for feeding. In the first and second 10 days of August, the main group of prawns leave from the low salinity and high temperature region in the bay (salinity 28-30‰, temperature 25-29℃), and migrate to 5-15m depth region out of the bay, later on the prawn population tends to feed at more than 20m depth with high salinity and temperature region (salinity 31-32.5‰, temperature 20-23℃). The last ten days of October (bottom water temperature 18-19℃) is the peak of spawning season, which ends in the first ten days of November, then the prawn groups disperse and enter the overwintering grounds.
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