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http://dx.doi.org/10.11626/KJEB.2021.39.1.055

The effect of starvation on the characteristics of morphometric measurement and body-sectioned shape in Far Eastern catfish (Silurus asotus)  

Park, In-Seok (Division of Convergence on Marine Science, Korea Maritime & Ocean University)
Goo, In Bon (Seojoonbio Inc.)
Gil, Hyun Woo (National Institute of Fisheries Science, South Sea Fisheries Research Institute)
Publication Information
Korean Journal of Environmental Biology / v.39, no.1, 2021 , pp. 55-67 More about this Journal
Abstract
A 210-day experiment was conducted to examine the effects of starvation on survival, external morphometric traits, and sectioned morphometric traits in Far Eastern catfish(Silurus asotus). The survival rate decreased to 92.2±0.47% in the fed group and to 74.4±2.59% in the starved group. Eight dimensions of Ls, DALPO/Ls, DADOP/Ls, ED/Ls, CH/Ls, BDAA/Ls, BDMA/Ls, and BWAA/Ls showed significant differences (p<0.05), and 16 other dimensions of DALAD/Ls, DPDPL/Ls, HPLAA/Ls, HALAV/Ls, HALOP/Ls, DAUPO/Ls, DADAV/Ls, DADAA/Ls, Max BL/Ls, Man BL/Ls, LD/Ls, HWOP/Ls, DAUF/HL, DAUS/HL, IW/HL, and DAUE/HL were not significantly different among the initial, fed, and starved groups (p>0.05). The fed group showed higher total height (THX), wider width (WX), and larger area (AX) than those of the starved group in each body section. This research provides information on the morphometric traits and body sections of starved Far Eastern catfish. These results can be used as a basic guide to indicate nutritional status and assist in aquaculture methods for Far Eastern catfish. Moreover, the methods used in this study were considered helpful because the survey analysis method can be used to investigate information on the nutritional status of other fish species.
Keywords
body section; Far Eastern catfish (Silurus asotus); morphometric trait; starvation;
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