Abstract：In order to determine the composition and fishery biological characteristics of reproductive stocks of estuarine tapertail anchovy Coilia mystus in Northern Hangzhou Bay,samples of estuarine tapertail anchovy were collected by set net during the reproductive period from May to August 2018, 2019, and 2020. The fishery biological characteristics of estuarine tapertail anchovy including the total length, body weight, and sex ratio were investigated. The results showed that total length distribution of female reproductive stocks of estuarine tapertail anchovy in Northern Hangzhou Bay ranged from 113 to 233 mm, and two dominant groups were found at 130—150 mm and 170—200 mm (73.2%). The total length distribution of male reproductive stocks of estuarine tapertail anchovy in Northern Hangzhou Bay ranged from 88 to 204 mm, and the dominant group were found at 110—140 mm (66.0%). The body weight distribution of female reproductive stocks ranged from 3.6 to 29.7 g, and two dominant groups were found at 6.0—10.0 g and 14.0—20.0 g (64.2%). The body weight distribution of male reproductive stocks ranged from 1.3 to 16.2 g, and the dominant group were found at 2.0—8.0 g (90.0%). The relationship between total length (L) and body weight (m) of female reproductive stocks was described as m =0.518×10-5L2.874(r2=0.978, n =984). The relationship between total length and body weight of male reproductive stocks was m =1.033×10-5L2.692( r2=0.957, n =661). The sex ratio of female to male was 1.49∶1, and the number of female individuals was significantly higher than that of male individuals (P<0.05). The gonadal development of female individuals was mainly in stages Ⅳ and Ⅴ, and total length of individuals whose gonad maturity stages had achieved Ⅳ or above were mainly founded at 140—150 mm and 170—200 mm. The gonadal development of male individuals was mainly in stages Ⅲ and Ⅳ, and total length of individuals whose gonad maturity stages had achieved Ⅳ or above were mainly founded at 110—150 mm. The feeding levels of the reproductive stocks of estuarine tapertail anchovy was mainly 0 and 1, accounting for 95.8%, and the empty stomach rate was only 69.2%. The findings indicated that the female reproductive stocks of estuarine tapertail anchovy in Northern Hangzhou Bay consisted of several generations, and maintained a certain feeding level during the reproductive period.
[1] 施炜纲,王博.长江河口区凤鲚的资源现状[J].水生生物学报,2002,26(6):648-653. [2] 庄平,王幼槐,李圣法,等.长江口鱼类[M].上海:上海科学技术出版社,2006:159-160. [3] 殷名称.鱼类生态学[M].北京:中国农业出版社,1995:268-269. [4] 仲伟,邵鑫斌,胡利华,等.凤鲚瓯江种群的生物学特性[J].温州大学学报(自然科学版),2009,30(4):14-18. [5] 晁眉,黄良敏,李军,等.福建九龙江口凤鲚的生物学特征[J].集美大学学报(自然科学版),2016,21(1):16-20. [6] 毕雪娟,张涛,冯广朋,等.长江口凤鲚个体生殖力的研究[J].海洋渔业,2015,37(3):223-232. [7] 林军,李增光,万荣,等.长江口凤鲚产卵群体繁殖力特征[J].上海海洋大学学报,2022,31(5):1023-1031. [8] 毕雪娟.长江口凤鲚繁殖生物学及HSI评估[D].上海:上海海洋大学,2015. [9] 胡永斌.长江口凤鲚和刀鲚年龄结构与生长特征的初步研究[D].上海:上海海洋大学,2020. [10] 李霞芳,蒋日进,芮银,等.瓯江口凤鲚生长、死亡和最适开捕体长[J].水生生物学报,2022,46(9):1393-1401. [11] 郭爱,陈峰,金海卫,等.东、黄海凤鲚的食物组成及其食性的季节变化[J].海洋渔业,2014,36(5):402-408. [12] 刘守海,徐兆礼,田丰歌.长江口及附近水域凤鲚摄食习性的分析[J].上海海洋大学学报,2012,21(4):589-597. [13] 胡园,周朝生,朱洁,等.性腺发育不同阶段野生瓯江凤鲚肌肉营养成分的分析与评价[J].水生生物学报,2021,45(4):790-800. [14] 郝辉擘,蒋日进,陈健,等.瓯江口鲚属鱼类产卵期肌肉营养成分分析与评价[J].浙江海洋大学学报(自然科学版),2022,41(5):448-454. [15] 中华人民共和国农业部.海洋渔业资源调查规范:SC/T 9403—2012[S].北京:中国农业出版社,2013. [16] 詹秉义.渔业资源评估[M].北京:中国农业出版社,1995. [17] RICKER W E. Linear regressions in fishery research[J]. Journal of the Fisheries Research Board of Canada,1973,30(3):409-434. [18] RICKER W E. Computation and Interpretation of Biological Statistics of Fish Populations[R]. Ottawa: Department of Environmental Fisheries & Marine Service, 1975: 382. [19] NIAMAIMANDI N, AZIZ A, SITIKHALIJAH D, et al. Reproductive biology of the green tiger prawn (Penaeus semisulcatus) in coastal waters of Bushehr,Persian Gulf[J]. ICES Journal of Marine Science,2008,65(9):1593-1599. [20] 陈新军.渔业资源与渔场学[M].北京:海洋出版社,2004:372-373. [21] 李建生,严利平,胡芬.东海日本鲭繁殖群体生物学特征的年代际变化[J].中国水产科学,2015,22(6):1253-1259. [22] 郭爱,陈峰,朱文斌,等.不同发育阶段东、黄海凤鲚的食性差异[J].浙江海洋学院学报(自然科学版),2016,35(1):8-14. [23] 于晓.长江口凤鲚繁殖群体的生物学特性研究[D].上海:上海海洋大学,2014. [24] 黄承伟,万荣,李增光,等.长江口凤鲚繁殖群体年龄与生长研究[J].海洋渔业,2022,44(6):670-679. [25] 李壮.渔业体长频数分析法在模拟和实际渔业中的应用[D].青岛:中国海洋大学,2006. [26] 王淼,周轩,洪波,等.杭州湾北部安氏白虾体长与体重关系的季节变化特征[J].中国水产科学,2020,27(11):1325-1332. [27] 张涛,庄平,章龙珍,等.长江口中华鲟自然保护区底层鱼类的群落结构特征[J].生态学报,2011,31(6):1687-1694. [28] 孔啸兰,江艳娥,龚玉艳,等.南海中北部尾明角灯鱼渔业生物学特性的初步研究[J].南方水产科学,2016,12(4):117-124. [29] 龚玉艳,杨玉滔,孔啸兰,等.南海北部陆坡海域瓦氏眶灯鱼的渔业生物学特征[J].中国水产科学,2018,25(5):1091-1101. [30] 陈峰,郭爱,朱文斌,等.南太平洋所罗门群岛海域黄鳍金枪鱼的渔业生物学特性[J].渔业科学进展,2013,34(3):12-20. [31] 粟丽,陈作志,张鹏,等.春季南沙海域鲣渔业生物学特性的初步分析[J].南方水产科学,2017,13(4):34-41. [32] 周永东,薛利建,徐开达.舟山近海凤鲚Coilia mystus(Linnaeus)的生物学特性研究[J].现代渔业信息,2004,19(8):19-21. [33] OLASO I, RAUSCHERT M, DE BROYER C. Trophic ecology of the family Artedidraconidae (Pisces:Osteichthyes) and its impact on the eastern Weddell Sea benthic system[J]. Marine Ecology Progress Series,2000,194:143-158. [34] 倪勇,王云龙,蒋玫,等.长江口凤鲚的渔业生物学特性[J].中国水产科学,1999,6(增刊):69-71.
2024, Vol. 43 
