Reproductive characteristics of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum (Shaw, 1804), in tropical coastal waters.

Autor: Soe KK; Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand., Iqbal TH; Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand.; Department of Fisheries Resources Utilization, Faculty of Marine and Fisheries, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia., Lim A; Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand., Wang WX; School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China., Tsim KWK; Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China., Takeuchi Y; Noto Center for Fisheries Science and Technology, Faculty of Biological Science and Technology, Kanazawa University, Ossaka, Noto-Cho, Ishikawa, Japan., Petchsupa N; Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand., Hajisamae S; Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand. sukree.h@psu.ac.th.
Jazyk: angličtina
Zdroj: BMC zoology [BMC Zool] 2023 Sep 19; Vol. 8 (1), pp. 22. Date of Electronic Publication: 2023 Sep 19.
DOI: 10.1186/s40850-023-00181-w
Abstrakt: This study investigated the reproductive traits of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum, along the coasts of Thailand during January to December 2021. Fish samples were collected from Pattani Bay, Thailand to assess the sex ratio, gonadosomatic index (GSI), maturity stage and fecundity. Additional fish samples were also collected from other areas to evaluate the length and weight at first sex change (Ls 50 and Ws 50 ) and length at first maturity (Lm 50 ). The overall sex ratio for male and female was 1:0.69 with male being predominant throughout the year. Threadfin fish spawn the whole year round with peaks during moderate rainy and heavy rainy seasons. Histological examination confirmed its protandrous hermaphrodite posing multiple spawning habits. The average fecundity was 1.85 × 10 5  ± 1.05 × 10 5 eggs and positively related with standard length, body weight, gonad weight, and egg diameter (p < 0.05). The Ls 50 and Ws 50 were 27.58 cm and 419.39 g, and 29.71 cm and 457.28 g, for fish from Pattani Bay and Samut Prakan province, respectively. The Lm 50 of male from Pattani Bay and Samut Prakan province were 25.78 cm and 25.56 cm, respectively, which were larger than those from Satun and Nakhon Sri Thammarat provinces. The Lm 50 of females from Pattani Bay was smaller than that from Samut Prakan province. This study provided fundamental information on the reproductive characteristics of E. tetradactylum, which can be implemented to support management of natural fish stock and aquaculture development.
(© 2023. BioMed Central Ltd., part of Springer Nature.)
Databáze: MEDLINE
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