Please use this identifier to cite or link to this item: https://doi.org/10.1002/ece3.8507
Title: Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
Authors: Quang, Minh Dinh
Ton, Huu Duc Nguyen
Tran, Thi Huyen Lam
Ngon, Trong Truong
Tien, Thi Kieu Nguyen
Jaafar, Zeehan 
Keywords: batch fecundity
Gold-spotted mudskipper
gonadosomatic index
length at first maturity
multispawner
spawning season
Issue Date: 1-Jan-2022
Publisher: WILEY
Citation: Quang, Minh Dinh, Ton, Huu Duc Nguyen, Tran, Thi Huyen Lam, Ngon, Trong Truong, Tien, Thi Kieu Nguyen, Jaafar, Zeehan (2022-01-01). Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta. ECOLOGY AND EVOLUTION 12 (1). ScholarBank@NUS Repository. https://doi.org/10.1002/ece3.8507
Abstract: 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 (Lm) as Lm 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 (r2 > 0.64 for all cases). Information derived on the reproductive biology of this species can inform its conservation, sustainable exploitation, and ex situ propagation.
Source Title: ECOLOGY AND EVOLUTION
URI: https://scholarbank.nus.edu.sg/handle/10635/228616
ISSN: 2045-7758
DOI: 10.1002/ece3.8507
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