Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong Delta
Periophthalmus chrysospilos is an amphibious fish living in mudflats from eastern India to Indonesia, including the Vietnamese Mekong Delta. Population biological traits play an important role in fishery assessment, but understanding is limited for this species. In total 1,031 specimens were caught...
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PeerJ Inc.
2022-04-01
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| author | Quang Minh Dinh Ton Huu Duc Nguyen Tien Thi Kieu Nguyen Tran Thi Huyen Lam Ngon Trong Truong Dinh Dac Tran |
| author_facet | Quang Minh Dinh Ton Huu Duc Nguyen Tien Thi Kieu Nguyen Tran Thi Huyen Lam Ngon Trong Truong Dinh Dac Tran |
| author_sort | Quang Minh Dinh |
| collection | DOAJ |
| description | Periophthalmus chrysospilos is an amphibious fish living in mudflats from eastern India to Indonesia, including the Vietnamese Mekong Delta. Population biological traits play an important role in fishery assessment, but understanding is limited for this species. In total 1,031 specimens were caught in two regions covering four provinces, including the TVST (Duyen Hai, Tra Vinh and Tran De, Soc Trang) and BLCM (Dong Hai, Bac Lieu and Dam Doi, Ca Mau). Results found that the sex ratio was close to 1:1. The parameters of the von Bertalanffy in TVST were L∞ = 12.8 cm, K = 0.41 yr−1, t0 = −0.10 yr and in BLCM were 12.7 cm, 0.38 yr−1 and −0.08 yr, respectively. Although the growth coefficient (Φ′) in BLCM (1.79), was lower than that in TVST (1.83), the species shared a similar size at first capture (7.9 cm in TVST and 7.9 cm in BLCM). The species suffered from heavy pressure of fishing in TVST as fishing mortality in TVST (2.32 yr−1) was higher than that in BLCM (1.38 yr−1), leading to the higher total mortality (Z = 3.60 yr−1) in TVST compared to BLCM (Z = 2.59 yr−1). By contrast, the species showed similar natural mortality over both sites (1.20 yr−1 in TVST and 1.22 yr−1 in BLCM). The Periophthalmus chrysospilos population was reasonably exploited because E values (0.64 in TVST and 0.53 in BLCM) were lower than E10 (0.706 in BTTV and 0.705 in STBL). Nonetheless, to avoid the consequences of overfishing, some sustainable fisheries practices should be implemented, such as protecting mangrove forests, restricting fishing during the recruitment period, using appropriate fishing tools and increasing mesh size. |
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| language | English |
| last_indexed | 2024-03-09T06:29:44Z |
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| spelling | doaj.art-2eaf57500d1f41389c0c2faf3e69bdc02023-12-03T11:06:05ZengPeerJ Inc.PeerJ2167-83592022-04-0110e1328910.7717/peerj.13289Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong DeltaQuang Minh Dinh0Ton Huu Duc Nguyen1Tien Thi Kieu Nguyen2Tran Thi Huyen Lam3Ngon Trong Truong4Dinh Dac Tran5Department of Biology, School of Education, Can Tho University, Can Tho, Viet NamDepartment of Biology, School of Education, Can Tho University, Can Tho, Viet NamDepartment of Biology, An Khanh High School, Can Tho, Viet NamInstitute of High Quality Biotechnology-Food Technology, Cuu Long University, Vinh Long, Viet NamDepartment of Molecular Biotechnology, Biotechnology Research and Development Institute, Can Tho University, Can Tho, Viet NamDepartment Fisheries Management and Economics, College of Aquaculture and Fisheries, Can Tho University, Can Tho, Viet NamPeriophthalmus chrysospilos is an amphibious fish living in mudflats from eastern India to Indonesia, including the Vietnamese Mekong Delta. Population biological traits play an important role in fishery assessment, but understanding is limited for this species. In total 1,031 specimens were caught in two regions covering four provinces, including the TVST (Duyen Hai, Tra Vinh and Tran De, Soc Trang) and BLCM (Dong Hai, Bac Lieu and Dam Doi, Ca Mau). Results found that the sex ratio was close to 1:1. The parameters of the von Bertalanffy in TVST were L∞ = 12.8 cm, K = 0.41 yr−1, t0 = −0.10 yr and in BLCM were 12.7 cm, 0.38 yr−1 and −0.08 yr, respectively. Although the growth coefficient (Φ′) in BLCM (1.79), was lower than that in TVST (1.83), the species shared a similar size at first capture (7.9 cm in TVST and 7.9 cm in BLCM). The species suffered from heavy pressure of fishing in TVST as fishing mortality in TVST (2.32 yr−1) was higher than that in BLCM (1.38 yr−1), leading to the higher total mortality (Z = 3.60 yr−1) in TVST compared to BLCM (Z = 2.59 yr−1). By contrast, the species showed similar natural mortality over both sites (1.20 yr−1 in TVST and 1.22 yr−1 in BLCM). The Periophthalmus chrysospilos population was reasonably exploited because E values (0.64 in TVST and 0.53 in BLCM) were lower than E10 (0.706 in BTTV and 0.705 in STBL). Nonetheless, to avoid the consequences of overfishing, some sustainable fisheries practices should be implemented, such as protecting mangrove forests, restricting fishing during the recruitment period, using appropriate fishing tools and increasing mesh size.https://peerj.com/articles/13289.pdfExploitation rateFishing mortalityGrowth coefficientMudskipperNatural mortalitySize at first capture |
| spellingShingle | Quang Minh Dinh Ton Huu Duc Nguyen Tien Thi Kieu Nguyen Tran Thi Huyen Lam Ngon Trong Truong Dinh Dac Tran Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong Delta PeerJ Exploitation rate Fishing mortality Growth coefficient Mudskipper Natural mortality Size at first capture |
| title | Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong Delta |
| title_full | Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong Delta |
| title_fullStr | Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong Delta |
| title_full_unstemmed | Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong Delta |
| title_short | Population biological traits of Periophthalmus chrysospilos Bleeker, 1853 in the Vietnamese Mekong Delta |
| title_sort | population biological traits of periophthalmus chrysospilos bleeker 1853 in the vietnamese mekong delta |
| topic | Exploitation rate Fishing mortality Growth coefficient Mudskipper Natural mortality Size at first capture |
| url | https://peerj.com/articles/13289.pdf |
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