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4-6月东太平洋赤道公海鸢乌贼生物学特性初步研究
引用本文:陆化杰,王从军,陈新军.4-6月东太平洋赤道公海鸢乌贼生物学特性初步研究[J].上海海洋大学学报,2014,23(3):441-447.
作者姓名:陆化杰  王从军  陈新军
作者单位:上海海洋大学 海洋科学学院, 上海 201306;上海海洋大学 大洋渔业资源可持续开发省部共建教育部重点实验室, 上海 201306;上海海洋大学 国家远洋渔业工程技术研究中心, 上海 201306;远洋渔业协同创新中心, 上海 201306;上海海洋大学 海洋科学学院, 上海 201306;上海海洋大学 海洋科学学院, 上海 201306;上海海洋大学 大洋渔业资源可持续开发省部共建教育部重点实验室, 上海 201306;上海海洋大学 国家远洋渔业工程技术研究中心, 上海 201306;远洋渔业协同创新中心, 上海 201306
基金项目:国家高技术研究发展计划(2012AA092303);国家发改委产业化专项(2159999);上海市科技创新行动计划(12231203900);国家科技支撑计划(2013BAD13B01)
摘    要:根据2013年4-6月在赤道公海探捕期间采集的539尾鸢乌贼样本,对赤道公海鸢乌贼的生物学进行了研究。结果表明,样本的胴长范围为137~338 mm,优势胴长组为160~220 mm,占样本总数的81.45%;样本的体重范围为95~1300 g,优势体重组为150~450 g,占样本总数的80.67%。不同月份鸢乌贼的胴长和体重组成不同,随着月份的增加优势胴长和优势体重逐渐增加。鸢乌贼体型瘦小,净重比例介于40.57%~87.76%之间,平均为59.43%;回归分析表明鸢乌贼的胴长与体重、胴长与净重的生长分别最适合用幂函数和指数函数表示。样本的雌、雄比例为76∶1,并且主要由性成熟个体组成,Ⅲ期及以上样本占全部样本的比例为68.83%;不同月份,鸢乌贼的性腺成熟度组成不同,随着月份的增加,样本日渐成熟。样本胃饱满度以0~2级为主,占样本总数的89.42%,胃含物主要由鱿鱼类、甲壳类和仔鱼组成。

关 键 词:鸢乌贼  生物学特性  太平洋赤道公海海域
收稿时间:2013/11/11 0:00:00
修稿时间:3/5/2014 12:00:00 AM

Preliminary study on the biological characteristics of Sthenoteuthis oualaniensis in the high seas nearby the equator of eastern Pacific during April to June
LU Hua-jie,WANG Cong-jun and CHEN Xin-jun.Preliminary study on the biological characteristics of Sthenoteuthis oualaniensis in the high seas nearby the equator of eastern Pacific during April to June[J].Journal of Shanghai Ocean University,2014,23(3):441-447.
Authors:LU Hua-jie  WANG Cong-jun and CHEN Xin-jun
Institution:College of Marine Sciences of Shanghai Ocean University, Shanghai 201306, China;The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;National Distant-water Fisheries Engineering Research Center, Shanghai Ocean University, Shanghai 201306, China;Collaborative Innovation Center for Distant-Water Fisheries, Shanghai 201306, China;College of Marine Sciences of Shanghai Ocean University, Shanghai 201306, China;College of Marine Sciences of Shanghai Ocean University, Shanghai 201306, China;The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;National Distant-water Fisheries Engineering Research Center, Shanghai Ocean University, Shanghai 201306, China;Collaborative Innovation Center for Distant-Water Fisheries, Shanghai 201306, China
Abstract:Based on the 539 samples of Sthenoteuthis oualaniensis collected by Chinese squid jig fishing fleets during April to June of 2013 in the high seas nearby the equator, the biological characteristics were studied. The result indicated that the mantle length (ML) ranged from 137 mm to 338 mm with a high concentration in 160 mm to 220 mm accounting for about 81.45% of all the samples, and the body weight (BW) ranged from 95 g to 1 300 g with a dominative weight from 150 g to 452 g accounting for about 80.76%, respectively. The composition of ML and BW was different among different months, and the dominative ML and BW range increased with the month increase. The ratio of the somatic body weight (SBW) to BW ranged from 40.57% to 87.76% with an average of 59.43%. The relationship between the ML to BW and ML to SBW was best described by the power function and exponential function by the Akaike's information criterion (AIC), respectively. The ratio of females to males was 76:1, and the samples were mostly composed of maturity individuals accounting for about 68.83% of all the samples.However, the maturity stage differed from month and increased with the month increase. The feeding stage was mainly in 0, 1 and 2 grades accounting for 89.42% of all the samples and the food was mainly composed of squids, crustacean and immature fishes.
Keywords:Sthenoteuthis oualaniensis  biological characteristics  high seas nearby the equator of eastern Pacific
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