Reproductive cycle of Glycymeris nummaria (Mollusca: Bivalvia) from Mali Ston Bay, Adriatic Sea, Croatia
Reproductive cycle of Glycymeris nummaria (Mollusca: Bivalvia) from Mali Ston Bay, Adriatic Sea, Croatia
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克罗地亚亚得里亚海马里斯顿湾的 Glycymeris nummaria（软体动物：双壳纲）的繁殖周期
DOI：
10.3989/scimar.03722.10a
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发表时间：
2013
期刊：
影响因子：
1.4
通讯作者：
M. Pećarević
中科院分区：
文献类型：
--
作者：
M. Crnčević;M. Peharda;D. Ezgeta;M. Pećarević
本文于2010年1 - 12月在亚得里亚海东南部的马里斯顿湾逐月采集标本，研究了金耳金耳（Glycymeris nummaria）的繁殖周期。我们使用标准组织学技术分析了性别比、性腺发育阶段和卵母细胞直径。不同性别间的总性别比和壳长均无差异。卵母细胞直径的大小频率分析结果与性腺发育阶段的定性分析结果一致，证实每年5月至7月出现一次产卵高峰。男女平均性腺指数与病情指数呈显著相关。本研究首次提供了关于黄颡鱼生殖特征的数据，为今后对其潜在渔业的可持续管理提供了必要的信息。
The reproductive cycle of the dog cockle, Glycymeris nummaria (Glycymerididae), was studied using specimens collected monthly from Mali Ston Bay, southeastern Adriatic Sea over the period from January to December 2010. We analysed sex ratios, gonad developmental stages, and oocyte diameters using standard histological techniques. There were no differences in the overall sex ratio and no difference in shell length with respect to sex. Results of a size-frequency analysis of oocyte diameters agreed with a qualitative analysis of gonadal developmental stages, confirming the occurrence of one annual spawning peak from May to July. A significant correlation was identified between mean gonad indices of males and females and condition index. This study provides the first data on the reproductive characteristics of G. nummaria , providing necessary information for the future sustainable management of its potential fishery.