Common snook reproductive physiology in freshwater and marine environments of Mexico

IF 0.9 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Marine and Freshwater Behaviour and Physiology Pub Date : 2021-11-17 DOI:10.1080/10236244.2021.1993068

Ulises Hernández-Vidal, Wilfrido M. Contreras‐Sánchez, X. Chiappa-Carrara, A. Hernández-Franyutti, M. Uribe

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引用次数: 3

Abstract

ABSTRACT The common snook (C. undecimalis) is a highly valuable commercial and sport fishing species in marine, estuarine, and freshwater habitats. Despite its abundance in freshwater ecosystems, the information on the reproductive biology comes mainly from studies in the marine habitat. In this work, the reproductive cycle at the gametogenic and hormonal level is addressed in specimens captured in contrasting environments interconnected by the Grijalva-Usumacinta fluvial system. Adult common snook presented a similar temporal pattern in sex steroid concentrations in both environments. Likewise, females and males were observed undergoing advanced maturity simultaneously in both environments. However, females in the freshwater environment did not reach final maturation, and no post-ovulatory follicles were found, indicating that spawn did not happen. Therefore, organisms are synchronized with gonads developing in both habitats, implying migrations of at least 300 km from the freshwater environment to the spawning grounds in the Gulf of Mexico.

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墨西哥淡水和海洋环境中常见的雪雀生殖生理

在海洋、河口和淡水生境中，普通梭子鱼(C. decimalis)是一种非常有价值的商业和运动捕鱼物种。尽管其在淡水生态系统中非常丰富，但关于其生殖生物学的信息主要来自海洋栖息地的研究。在这项工作中，配子体和激素水平的生殖周期在Grijalva-Usumacinta河流系统相互连接的对比环境中捕获的标本中得到解决。在两种环境中，成年普通snook在性类固醇浓度方面表现出相似的时间模式。同样，雌性和雄性在两种环境中同时经历了成熟。然而，淡水环境中的雌性没有达到最终成熟，也没有发现排卵后的卵泡，表明没有发生产卵。因此，在这两个栖息地中，生物与性腺的发育是同步的，这意味着从淡水环境到墨西哥湾的产卵地至少迁徙了300公里。

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来源期刊

Marine and Freshwater Behaviour and Physiology 生物-海洋与淡水生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Marine and Freshwater Behaviour and Physiology is devoted to the publication of papers covering field and laboratory research into all aspects of the behaviour and physiology of all marine and freshwater animals within the contexts of ecology, evolution and conservation. As the living resources of the world’s oceans, rivers and lakes are attracting increasing attention as food sources for humans and for their role in global ecology, the journal will also publish the results of research in the areas of fisheries biology and technology where the behaviour and physiology described have clear links to the contexts mentioned above. The journal will accept for publication Research Articles, Reviews, Rapid Communications and Technical Notes (see Instructions for authors for details). In addition, Editorials, Opinions and Book Reviews (invited and suggested) will also occasionally be published. Suggestions to the Editor-In-Chief for Special Issues are encouraged and will be considered on an ad hoc basis. With the goal of supporting early career researchers, the journal particularly invites submissions from graduate students and post-doctoral researchers. In addition to recognising the time constraints and logistical limitations their research often faces, and their particular need for a prompt review process, accepted articles by such researchers will be given prominence within the journal (see Instructions for authors for details).