The gametogenic cycle and spawning of the short-necked clam, Paphia undulata Born, 1778 (Bivalvia: Veneridae) from Timsah Lake, Suez Canal, Egypt.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-09-13 DOI:10.1186/s40850-023-00182-9

Mostafa A M Mahmoud, Mohamed H Yassien

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Abstract

Background: Paphia undulata, The Short-Necked Clam, is an edible marine bivalve that is consumed internationally and locally in Egypt. Overfishing and pollution have caused population declines in Egyptian fisheries during the last decade. Accurate reproductive biology knowledge is critical for designing long-term exploitation strategy for this resource. P. undulata spawning and gametogenic cycle research were carried out from January to December 2020 along Timsah Lake, Suez Canal, Egypt.

Results: These clams are functionally dioecious with a very low incidence of hermaphroditism. The sex ratio of the clam population was 1.0:1.07:0.04 for male, female and hermaphrodite respectively. The shell lengths of the collected clams were 4.64 ± 0.83 cm in males, 4.55 ± 0.9 cm in females and 4.19 ± 0.3 cm in hermaphrodite clams. The sizes at the onset of sexual maturity in both males and females were 2.1 cm and 2.5 cm respectively.

Conclusions: Reproductive studies revealed that this species has a prolonged spawning season that is not restricted to a specific period.

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埃及苏伊士运河Timsah湖短颈蛤的配子发生周期和产卵(双壳亚纲:蛤科)。

背景:波帕菲亚，短颈蛤，是一种可食用的海洋双壳类，在国际和埃及当地消费。在过去十年中，过度捕捞和污染导致埃及渔业人口减少。准确的生殖生物学知识对于设计该资源的长期开发策略至关重要。2020年1月至12月，在埃及苏伊士运河Timsah湖进行了波状斑鲷产卵和配子体发育周期的研究。结果:这些蛤在功能上是雌雄异株的，雌雄同体的发生率很低。雌雄同体的性别比分别为1.0:1.07:0.04。雌雄同体蛤的壳长分别为4.64±0.83 cm、4.55±0.9 cm和4.19±0.3 cm。雄性和雌性性成熟开始时的大小分别为2.1 cm和2.5 cm。结论:生殖研究表明，该物种有一个漫长的产卵季节，并不局限于一个特定的时期。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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