Citation
Soe Sabai, . and Segura Garcia Iris, . and Tun Nyo Nyo, . and Box Stephen, . Beyond bycatch: the species diversity of tonguesole (Pleuronectiformes: Cynoglossidae) in coastal fisheries of the Tanintharyi Region Southern Myanmar. pp. 23-33. ISSN 0116-6514
Abstract
Flatfishes in the family Cynoglossidae are an important coastal fishery in Myanmar. Due to the overlapping morphologies of multiple tonguesole species caught both as bycatch from trawl fisheries and targeted specifically by small scale fishers they are all marketed under a single local name khwayshar�. This presents a management challenge given the potential differences in the species-specific life-histories population dynamics fishing vulnerability and harvest rates. This study investigated the species diversity of tonguesole landings from coastal communities of the Tanintharyi Region of southern Myanmar. DNA barcoding was used to distinguish potentially 10 different species of which five were identified to species level and five at the genus level. Unconfirmed genetic identifications were based on external morphology. The poor efficacy of DNA barcoding for tonguesole species identification resulted from the limited DNA barcode reference sequences available for the family Cynoglossidae in public databases. An asymmetric occurrence and relative abundance of the identified species in landing sites where samples were collected suggested that the most common species was Cynoglossus oligolepis (Bleeker 1855) a new species record for Myanmar followed by Cynoglossus lingua Hamilton 1822. The results of the present study provide new information to characterise the tonguesole fishery as a first step in the development of management plans for the coastal fishery in Myanmar.
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Abstract
Flatfishes in the family Cynoglossidae are an important coastal fishery in Myanmar. Due to the overlapping morphologies of multiple tonguesole species caught both as bycatch from trawl fisheries and targeted specifically by small scale fishers they are all marketed under a single local name khwayshar�. This presents a management challenge given the potential differences in the species-specific life-histories population dynamics fishing vulnerability and harvest rates. This study investigated the species diversity of tonguesole landings from coastal communities of the Tanintharyi Region of southern Myanmar. DNA barcoding was used to distinguish potentially 10 different species of which five were identified to species level and five at the genus level. Unconfirmed genetic identifications were based on external morphology. The poor efficacy of DNA barcoding for tonguesole species identification resulted from the limited DNA barcode reference sequences available for the family Cynoglossidae in public databases. An asymmetric occurrence and relative abundance of the identified species in landing sites where samples were collected suggested that the most common species was Cynoglossus oligolepis (Bleeker 1855) a new species record for Myanmar followed by Cynoglossus lingua Hamilton 1822. The results of the present study provide new information to characterise the tonguesole fishery as a first step in the development of management plans for the coastal fishery in Myanmar.
Additional Metadata
Item Type: | Article |
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AGROVOC Term: | Flatfish |
AGROVOC Term: | Cynoglossidae |
AGROVOC Term: | Coastal fisheries |
AGROVOC Term: | Sampling |
AGROVOC Term: | analysis |
AGROVOC Term: | Species diversity |
AGROVOC Term: | Fishery management |
Depositing User: | Mr. AFANDI ABDUL MALEK |
Last Modified: | 24 Apr 2025 00:55 |
URI: | http://webagris.upm.edu.my/id/eprint/9759 |
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