Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta
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 spaw...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
|
| Series: | Ecology and Evolution |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ece3.8507 |
| _version_ | 1828032261516165120 |
|---|---|
| author | Quang Minh Dinh Ton Huu Duc Nguyen Tran Thi Huyen Lam Ngon Trong Truong Tien Thi Kieu Nguyen Zeehan Jaafar |
| author_facet | Quang Minh Dinh Ton Huu Duc Nguyen Tran Thi Huyen Lam Ngon Trong Truong Tien Thi Kieu Nguyen Zeehan Jaafar |
| author_sort | Quang Minh Dinh |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-10T15:03:02Z |
| format | Article |
| id | doaj.art-603f9de92a0b4ef89702117b59205680 |
| institution | Directory Open Access Journal |
| issn | 2045-7758 |
| language | English |
| last_indexed | 2024-04-10T15:03:02Z |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecology and Evolution |
| spelling | doaj.art-603f9de92a0b4ef89702117b592056802023-02-15T09:06:07ZengWileyEcology and Evolution2045-77582022-01-01121n/an/a10.1002/ece3.8507Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong DeltaQuang Minh Dinh0Ton Huu Duc Nguyen1Tran Thi Huyen Lam2Ngon Trong Truong3Tien Thi Kieu Nguyen4Zeehan Jaafar5Department of Biology School of Education Can Tho University Can Tho VietnamDepartment of Biology School of Education Can Tho University Can Tho VietnamDepartment of Molecular Biotechnology, Biotechnology Research and Development Institute Can Tho University Can Tho VietnamDepartment of Molecular Biotechnology, Biotechnology Research and Development Institute Can Tho University Can Tho VietnamDepartment of Biology An Khanh High School Can Tho VietnamDepartment of Biological Sciences National University of Singapore SingaporeSingaporeAbstract 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.https://doi.org/10.1002/ece3.8507batch fecundityGold‐spotted mudskippergonadosomatic indexlength at first maturitymultispawnerspawning season |
| spellingShingle | Quang Minh Dinh Ton Huu Duc Nguyen Tran Thi Huyen Lam Ngon Trong Truong Tien Thi Kieu Nguyen Zeehan Jaafar Reproduction ecology of an emerging fishery resource, the amphibious mudskipper Periophthalmus chrysospilos, in the Mekong Delta Ecology and Evolution batch fecundity Gold‐spotted mudskipper gonadosomatic index length at first maturity multispawner spawning season |
| 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 | batch fecundity Gold‐spotted mudskipper gonadosomatic index length at first maturity multispawner spawning season |
| url | https://doi.org/10.1002/ece3.8507 |
| work_keys_str_mv | AT quangminhdinh reproductionecologyofanemergingfisheryresourcetheamphibiousmudskipperperiophthalmuschrysospilosinthemekongdelta AT tonhuuducnguyen reproductionecologyofanemergingfisheryresourcetheamphibiousmudskipperperiophthalmuschrysospilosinthemekongdelta AT tranthihuyenlam reproductionecologyofanemergingfisheryresourcetheamphibiousmudskipperperiophthalmuschrysospilosinthemekongdelta AT ngontrongtruong reproductionecologyofanemergingfisheryresourcetheamphibiousmudskipperperiophthalmuschrysospilosinthemekongdelta AT tienthikieunguyen reproductionecologyofanemergingfisheryresourcetheamphibiousmudskipperperiophthalmuschrysospilosinthemekongdelta AT zeehanjaafar reproductionecologyofanemergingfisheryresourcetheamphibiousmudskipperperiophthalmuschrysospilosinthemekongdelta |