Morphological study of the mating organs and their regeneration in <italic style="font-style: italic">Portunus</italic> <italic style="font-style: italic">trituberculatus</italic> (Miers, 1876)

Yi ZHANG; Jian YANG; Chunlin WANG; Changkao MU; Congcong HOU

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Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)

Updated：2026-04-17

- Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)
- Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)
- 海洋湖沼学报(英文) 2026年页码：1-13
- Affiliations：
  
  Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo 315832, China
- Author bio：
  
  muchangkao@nbu.edu.cn; houcongcong@nbu.edu.cn
- Funds：
  
  the NSFC-Ningbo Joint Fund for Regional Innovation Development(U23A20248);the National Natural Science Foundation of China(42276101;42076087);the Key Project of the Ningbo Natural Science Foundation(2022J071);the earmarked fund for Modern Agro-industry Technology Research System(CARS-48);the K. C. Wong Magna Fund at Ningbo University, the Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, and the Graduate Student Scientific Research and Innovation Project of Ningbo University(IF2025042;IF2025047;IF2025019)
- DOI：
  中图分类号：
- 收稿：2025-05-21，
  
  网络首发：2026-04-17，
- Accepted：
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Yi ZHANG, Jian YANG, Chunlin WANG, 等. Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)[J/OL]. 海洋湖沼学报(英文), 2026,1-13.

ZHANG Yi,YANG Jian,WANG Chunlin,et al.Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)[J].Journal of Oceanology and Limnology,
Yi ZHANG, Jian YANG, Chunlin WANG, 等. Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)[J/OL]. 海洋湖沼学报(英文), 2026,1-13. DOI：

ZHANG Yi,YANG Jian,WANG Chunlin,et al.Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)[J].Journal of Oceanology and Limnology, DOI：.

摘要

Abstract

A thorough understanding of the reproductive biology of

Portunus

trituberculatus

a commercially significant crab species prevalent along the temperate western Pacific coast

is required for sustainable aquaculture. The structure and function of the male mating system of

trituberculatus

were systematically studied using gross morphological examination

scanning electron microscopy

and his

tological analysis. The mating system consists of paired long first gonopods (G1)

short second gonopods (G2)

and penises

forming a unique mating complex. G1 is slender and tubular with lateral sutures and a needle-like tip

featuring basal insertion ports for the penis and G2. Histological sections revealed striated muscles

mucous glands

and secretory vesicles within the G1 base

complemented by external pinnate setae on the endopodite. G2 displays a bifurcated terminus with basal striated musculature and surface pinnate setae. Pinnate setae may have sensory functions. The penis is supported by the annular muscle layer and contains spongy connective tissue

and its erection mechanism is driven by haemolymph. During mating

the penis and G2 are inserted into the anterior proximal foramen (AF) and posterior distal foramen (PF)

respectively. The results of the gonopod regeneration experiments reveal that the regeneration ability of this species is limited

which may be related to the protected position under the pleon. This study clarified the cooperative working mechanism of the male mating system of

trituberculatus

providing a theoretical basis for its reproductive physiology research.

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Keywords

references

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Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)

Morphological study of the mating organs and their regeneration in Portunus trituberculatus (Miers, 1876)

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摘要

Abstract

关键词

Keywords

references