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http://dx.doi.org/10.5657/KFAS.2014.0888

First Morphological Description and the Distribution of Ophisurus macrorhynchos (Anguilliformes: Ophichthidae) Leptocephalus Collected from Southeastern Waters of Jeju Island  

Ji, Hwan-Sung (Fisheries Resources Management Division, National Fisheries Research and Development Institute)
Choi, Jung Hwa (Fisheries Resources Management Division, National Fisheries Research and Development Institute)
Choi, Kwang Ho (Fisheries Resources Management Division, National Fisheries Research and Development Institute)
Yoon, Sang Chul (Fisheries Resources Management Division, National Fisheries Research and Development Institute)
Lee, Dong Woo (Fisheries Resources Management Division, National Fisheries Research and Development Institute)
Kim, Jin-Koo (Department of Marine Biology, Pukyong National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.47, no.6, 2014 , pp. 888-894 More about this Journal
Abstract
Seventeen specimens of leptocephali [9.8-44.5 mm total length (TL)], of the family Ophichthidae, were collected from southeastern waters off Jeju Island and the Korea-Japan intermediate zone, and identified by means of morphology and genetics. These specimens were identified as belonging to the subfamily Ophichthinae based on various combinations of morphological characters: 211-215 total myomeres; 7 gut swellings; 2 liver lobes connected with the gall bladder on the second lobe; 6-7 postanal pigments present from anus to caudal margin. An analysis of the partial 12S rRNA sequences (849 base pairs) of mitochondrial DNA showed that our specimens must be Ophisurus macrorhynchos because their sequences were concordant with those of the adult O. macrorhynchos (genetic distance = 0.000). Furthermore, their total myomeres were consistent with those of the O. macrorhynchos adult. This is the first time that the morphological characteristics of O. macrorhynchos leptocephali have been described for Korean waters, and we suggest diagnostic characteristics for the genus Ophisurus leptocephali. We hypothesize that one of the spawning grounds of O. macrorhynchos is located in the southeastern part of Jeju Island.
Keywords
Leptocephali; Ophichthidae; Ophisurus macrorhynchos; morphological development; Distribution;
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Times Cited By KSCI : 6  (Citation Analysis)
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