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Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta

Populations of Periophthalmus chrysospilos, the Gold‐spotted mudskipper, within the Mekong Delta are facing extirpation risks due to indiscriminate harvesting for the growing aquarium and food‐fish trade. This study provides some of the first information on reproductive ecology—such as spawning type...

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Autores principales: Dinh, Quang Minh, Nguyen, Ton Huu Duc, Lam, Tran Thi Huyen, Truong, Ngon Trong, Nguyen, Tien Thi Kieu, Jaafar, Zeehan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8796952/
https://www.ncbi.nlm.nih.gov/pubmed/35127029
http://dx.doi.org/10.1002/ece3.8507
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author Dinh, Quang Minh
Nguyen, Ton Huu Duc
Lam, Tran Thi Huyen
Truong, Ngon Trong
Nguyen, Tien Thi Kieu
Jaafar, Zeehan
author_facet Dinh, Quang Minh
Nguyen, Ton Huu Duc
Lam, Tran Thi Huyen
Truong, Ngon Trong
Nguyen, Tien Thi Kieu
Jaafar, Zeehan
author_sort Dinh, Quang Minh
collection PubMed
description Populations of Periophthalmus chrysospilos, the Gold‐spotted mudskipper, within the Mekong Delta are facing extirpation risks due to indiscriminate harvesting for the growing aquarium and food‐fish trade. This study provides some of the first information on reproductive ecology—such as spawning type and season, length at first maturity, and batch fecundity—of this species, to be used in their management. The sex ratio of wild populations, based on 1031 individuals (523 males and 508 females) is 1:1. The gonadosomatic index (GSI) values are exhibit a non‐normal distribution and changed with gender, season, and site. A combination of GSIs and the monthly appearance of mature gonads suggest that this species reproduces throughout the year, with peak from July to October. This species exhibits sexual and spatial variation in size at first maturity (L(m) ) as L(m) is 6.2–8.6 cm in males and 6.4–7.3 cm in females. The batch fecundity (F = 2614 to 23,465 eggs/female) exhibits non‐normal distribution and varies with site, with the highest values at Dam Doi, Ca Mau (13,336 ± 1,279 SE) and the lowest at Tran De, Soc Trang (6654 ± 851 SE). In addition, batch fecundity is directly proportional to body size due to high determination relationships between batch fecundity and fish size (r (2) > 0.64 for all cases). Information derived on the reproductive biology of this species can inform its conservation, sustainable exploitation, and ex situ propagation.
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spelling pubmed-87969522022-02-04 Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta Dinh, Quang Minh Nguyen, Ton Huu Duc Lam, Tran Thi Huyen Truong, Ngon Trong Nguyen, Tien Thi Kieu Jaafar, Zeehan Ecol Evol Research Articles Populations of Periophthalmus chrysospilos, the Gold‐spotted mudskipper, within the Mekong Delta are facing extirpation risks due to indiscriminate harvesting for the growing aquarium and food‐fish trade. This study provides some of the first information on reproductive ecology—such as spawning type and season, length at first maturity, and batch fecundity—of this species, to be used in their management. The sex ratio of wild populations, based on 1031 individuals (523 males and 508 females) is 1:1. The gonadosomatic index (GSI) values are exhibit a non‐normal distribution and changed with gender, season, and site. A combination of GSIs and the monthly appearance of mature gonads suggest that this species reproduces throughout the year, with peak from July to October. This species exhibits sexual and spatial variation in size at first maturity (L(m) ) as L(m) is 6.2–8.6 cm in males and 6.4–7.3 cm in females. The batch fecundity (F = 2614 to 23,465 eggs/female) exhibits non‐normal distribution and varies with site, with the highest values at Dam Doi, Ca Mau (13,336 ± 1,279 SE) and the lowest at Tran De, Soc Trang (6654 ± 851 SE). In addition, batch fecundity is directly proportional to body size due to high determination relationships between batch fecundity and fish size (r (2) > 0.64 for all cases). Information derived on the reproductive biology of this species can inform its conservation, sustainable exploitation, and ex situ propagation. John Wiley and Sons Inc. 2022-01-24 /pmc/articles/PMC8796952/ /pubmed/35127029 http://dx.doi.org/10.1002/ece3.8507 Text en © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Dinh, Quang Minh
Nguyen, Ton Huu Duc
Lam, Tran Thi Huyen
Truong, Ngon Trong
Nguyen, Tien Thi Kieu
Jaafar, Zeehan
Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
title Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
title_full Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
title_fullStr Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
title_full_unstemmed Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
title_short Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
title_sort reproduction ecology of an emerging fishery resource, the amphibious mudskipper periophthalmus chrysospilos, in the mekong delta
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8796952/
https://www.ncbi.nlm.nih.gov/pubmed/35127029
http://dx.doi.org/10.1002/ece3.8507
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