Reproductive strategy of spiny gurnard Lepidotrigla dieuzeidei Blanc and Hureau, 1973 from the south-eastern Adriatic Sea

IF 1 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Acta Adriatica Pub Date : 2021-07-26 DOI:10.32582/aa.62.1.3

T. Dobroslavić, A. Conides, J. S. Šprem, B. Glamuzina, V. Bartulović

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Abstract

This study provides the first data on the reproductive biology of the spiny gurnard Lepidotrigla dieuzeidei. A total of 1027 individuals were collected monthly from September 2011 to August 2012. The total length of the individuals in the sample ranged from 7.46 cm to 14.62 cm with a female to male ratio of 1 to 0.59. Positive allometric growth was observed for both females (b=3.07) and males (b=3.08). Variations of condition factor were similar in both sexes with mean values of 1.07 for females and 1.01 for males. The fish L. dieuzeidei had a long spawning period extending from November to July based on monthly values of gonadosomatic index. Histological analysis showed that this fish was multiple synchronous developments of ovaries with multiple spawning events. The ovaries were always represented with a group of primary oocytes and a diverse population of vitel-logenic oocytes, each specially recruited during the final stages of maturation in uniform or uneven phases. Batch fecundity was estimated gravimetrically using the hydrated oocyte method and was estimated to be around 558 to 10.230 oocytes per female. L. dieuzeidei is an important by-catch species and data from this study represent a valuable contribution to stock management.

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1973年亚得里亚海东南部多刺杜父鱼的繁殖策略

本研究首次提供了关于鳞鱼(Lepidotrigla dieuzeeidei)生殖生物学的资料。2011年9月至2012年8月每月共收集1027人。个体总长度为7.46 ~ 14.62 cm，雌雄比为1∶0.59。雌性(b=3.07)和雄性(b=3.08)均呈异速生长阳性。条件因子在两性间的变异相似，女性平均值为1.07，男性平均值为1.01。按月性腺指数计算，双子母鱼的产卵期较长，从11月持续到7月。组织学分析表明，该鱼具有多个卵巢同步发育和多个产卵事件。卵巢总是以一组初级卵母细胞和不同种群的卵细胞为代表，每个卵母细胞在成熟的最后阶段以均匀或不均匀的阶段特别招募。使用水合卵母细胞法估计批量繁殖能力，估计每只雌性约为558至10.230个卵母细胞。dieuzeidei是重要的副渔获物种，本研究的数据对种群管理有重要贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Adriatica 生物-海洋与淡水生物学

CiteScore

1.60

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Journal "Acta Adriatica" is an Open Access journal. Users are allowed to read, download, copy, redistribute, print, search and link to material, and alter, transform, or build upon the material, or use them for any other lawful purpose as long as they attribute the source in an appropriate manner according to the CC BY licence.