螯虾属的功能生殖形态,1888(十足目,螯虾科)。

IF 2 2区 生物学 Q2 ZOOLOGY
Current Zoology Pub Date : 2024-09-16 eCollection Date: 2025-06-01 DOI:10.1093/cz/zoae053
Isabela R R Moraes, Mariana Antunes, Laura S López-Greco, Fernando José Zara, Antonio Leão Castilho
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引用次数: 0

摘要

对虾属的对虾(对虾科)常见于世界各地的亚热带和热带海洋栖息地。本研究旨在首次从组织学、组织化学和形态学角度描述该属植物的生殖系统,以阐明该属植物的雌雄同体性系统。雄性的生殖系统细长且非常透明,很难观察到。对整个头胸进行组织学切片,以确保生殖系统的所有区域都能被识别。这个非伽马酰亚胺群显示出一种gonochic状态。生殖系统呈胸廓状,其中雄性有一对睾丸和一对非常薄的输精管,在性腺孔的开口处结束。精子包囊结构缺失,在精子团中聚集的精子周围没有任何层。在女性中,生殖系统由一对延伸到pleon末端的卵巢组成。子房的延伸与其他梨状虾相比有一种特殊的模式。在这里,我们假设雄性在体细胞形态结构上投入能量来保护宿主和雌性,使用更大的手枪状螯,而雌性则投入能量来繁殖,因为这个群体的所有成员都是典型的“成对结合”的例子。观察到的生殖雄性形态模式也可能是该属在次目中可能存在突触性的证据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Functional reproductive morphology of the snapping shrimp genus Synalpheus Spence Bate, 1888 (Decapoda, Alpheidae).

Shrimps of the genus Synalpheus (Caridea) are commonly found in subtropical and tropical marine habitats around the world. The present work aims to provide the first description of the reproductive system of this genus using histological, histochemical, and morphological perspectives to elucidate the gonochoric or hermaphrodite sexual system in this genus. Males have a slender and very translucent reproductive system that is challenging to observe. The entire cephalothorax was histologically sectioned to ensure that all regions of the reproductive system could be identified. This non-gambarelloides group shows a gonochoric condition. The caridean pattern of the reproductive system was observed where the male has a pair of testes and a pair of very thin vasa deferentia, ending at the opening of the gonopore. Spermatophore structure is absent, without any layers surrounding the spermatozoa that are aggregated in a sperm mass. In females, the reproductive system consists of a pair of ovaries that extend to the end of the pleon. The extension of the ovary has a particular pattern compared to other caridean shrimps. Here, we hypothesize that males invest energy on somatic morphological structures to protect the host and female, using the larger pistol-like cheliped, while females invest energy in reproduction since all the members of this group are typical "pair-bond" examples. The observed pattern of the reproductive male morphology could also be evidence of a possible synapomorphy for this genus within the infraorder.

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来源期刊
Current Zoology
Current Zoology Agricultural and Biological Sciences-Animal Science and Zoology
CiteScore
3.20
自引率
9.10%
发文量
111
审稿时长
6 weeks
期刊介绍: About the Journal Current Zoology (formerly Acta Zoologica Sinica, founded in 1935) is an open access, bimonthly, peer-reviewed international journal of zoology. It publishes review articles and research papers in the fields of ecology, evolution and behaviour. Current Zoology is sponsored by Institute of Zoology, Chinese Academy of Sciences, along with the China Zoological Society.
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