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The Occurrence of Pseudo-silver eels with Different Silvering Index and Gonadal Development Stages in Anguilla japonica (Anguillidae) from Korean waters  

Hong, Yang-Ki (Inland Fisheries Research Institute, National Institute of Fisheries Science)
Song, Mi-Young (Inland Fisheries Research Institute, National Institute of Fisheries Science)
Park, Hee-Won (Inland Fisheries Research Institute, National Institute of Fisheries Science)
Kang, Jung-Ha (Biotechnology Research Division, National Institute of Fisheries Science)
Lee, Wan-Ok (Inland Fisheries Research Institute, National Institute of Fisheries Science)
Publication Information
Korean Journal of Ichthyology / v.29, no.2, 2017 , pp. 94-100 More about this Journal
Abstract
Three pseudo-silver eels (PS1~PS3) were found by analysis of silvering index and biological characteristics of 454 eels, Anguilla japonica, collected from the 9 sites of Korean fresh and brackish waters from September 2014 to August 2015. Two specimens (PS1~PS2) from Lake Soyang and one (PS3) from Geum river estuary were identified as pseudo-silver eel showing a large difference between silvering index and GSI. The external morphology of the pseudo-silver eels were in S2 (late silver eel) stage, but they were classified into Y1 (yellow eel) and Y2 (late yellow eel) stage in GSI, Gut index, Eye index and Y2 stage in gonadal development and mean egg diameter.
Keywords
pseudo-silver eel; Anguilla japonica; silvering index; GSI;
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Times Cited By KSCI : 2  (Citation Analysis)
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