浙江海洋学院学报:自然科学版
浙江海洋學院學報:自然科學版
절강해양학원학보:자연과학판
Journal of Zhejiang Ocean University(Natural Science Edition)
2012年
4期
295-300
,共6页
刀鲚%数量分布%群体结构%黄海南部%东海北部
刀鱭%數量分佈%群體結構%黃海南部%東海北部
도제%수량분포%군체결구%황해남부%동해북부
Coilia nasus%spatial distribution%population structure%the southern Yellow Sea%the northern East China Sea
以2008年5月至2009年2月黄海南部和东海北部渔业资源监测调查数据为依据,分析了海洋中刀鲚的数量分布、群体结构特征以及分布海域的环境特征。结果表明,春季(5月)和夏季(8月)未采集到刀鲚,在秋季(11月)采集到1241尾,平均渔获率为0.211kg/ll,冬季(2月)采集到4526尾,平均渔获率为0.490kg/a,黄海南部和东海北部的刀鲚主要分布在大沙渔场附近,水温6.20℃,在30~60m水深处、32度等盐线海域分布较密集。所采集的刀鲚平均体长240.77mm,平均体重55.09g,在海洋中主要摄食虾类和端足类等,其摄食率在2—4月较高。
以2008年5月至2009年2月黃海南部和東海北部漁業資源鑑測調查數據為依據,分析瞭海洋中刀鱭的數量分佈、群體結構特徵以及分佈海域的環境特徵。結果錶明,春季(5月)和夏季(8月)未採集到刀鱭,在鞦季(11月)採集到1241尾,平均漁穫率為0.211kg/ll,鼕季(2月)採集到4526尾,平均漁穫率為0.490kg/a,黃海南部和東海北部的刀鱭主要分佈在大沙漁場附近,水溫6.20℃,在30~60m水深處、32度等鹽線海域分佈較密集。所採集的刀鱭平均體長240.77mm,平均體重55.09g,在海洋中主要攝食蝦類和耑足類等,其攝食率在2—4月較高。
이2008년5월지2009년2월황해남부화동해북부어업자원감측조사수거위의거,분석료해양중도제적수량분포、군체결구특정이급분포해역적배경특정。결과표명,춘계(5월)화하계(8월)미채집도도제,재추계(11월)채집도1241미,평균어획솔위0.211kg/ll,동계(2월)채집도4526미,평균어획솔위0.490kg/a,황해남부화동해북부적도제주요분포재대사어장부근,수온6.20℃,재30~60m수심처、32도등염선해역분포교밀집。소채집적도제평균체장240.77mm,평균체중55.09g,재해양중주요섭식하류화단족류등,기섭식솔재2—4월교고。
Based on the data obtained from the fishery resources monitoring in the southern Yellow Sea and northern East China Sea(26°00'-34.5°00' N, 121°00-126.5°00' E) from May in 2008 to February in 2009, the spatial distribution and population structure of Coilia nasus were analyzed. The results indicated that C. nasus was collected in autumn (November in 2008) and winter (February in 2009), while not collected in spring (May in 2008) and summer (August in 2008). The individual number of C. nasus was 1 241 and the average catch rate was 0.211 kg/h in autumn. However, they were 4 526 and 0.490 kg/h in winter. It was found that C.nasus distributed mainly in the Dasha fishing ground where the bottom temperature ranged from 6 to 20 ℃. And the bottom salinity was 32 and water depth ranged from 30 to 60 m. In addition, the average body length and weight of C. naztts collected in the sea were 240.77 mm and 55.09 g respectively. Decapoda and am- phipoda were the dominant prey of C. nasus, meanwhile, the degree of stomach fullness was the highest from February to April.