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This study identified the differences in the morphometric characteristics of the truss and classical dimensions between diploid and triploid Far Eastern catfish, Silurus asotus, and provided methods for sorting diploid and triploid Far Eastern catfish based on morphometric observations. The significant variables were the direct distance between the anterior edge of the lower lip and the anterior insertion of the dorsal fin (DALAD), the horizontal distance between the anterior edge of the lower lip and the anterior insertion of the ventral fin (HALAV), the direct distance between the anterior edge of the upper lip and the first nostril (DAUF), the direct distance between the anterior edge of the upper lip and the second nostril (DAUS), the interorbital width (IW), and the mandible barbel length (ManBL). The more significant variables were HALAV, DALAD, DAUF, IW, and DAUS. The most useful combination of variables for separating the two groups was DALAD, IW, and DAUF, which correctly classified 85% of the catfish as triploid or diploid, and that percentage was the maximum degree of value possible (p<0.05). Triploid Far Eastern catfish had a high rate of growth in the head region and body depth during the first year after hatching. Triploid Far Eastern catfish had smaller heads and shorter mandible barbels than diploid Far Eastern catfish.
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참고문헌 (34)
참고문헌 신청
Bonar SA / 1988 / Evaluation of the separation of triploid and diploid grass carp (Ctenopharyngodon idella) (Valenciennes), by external morphology / J. Fish Biol. 33:895~898
Cassani JR / 1990 / Problems associated with tetraploid induction and survival in grass carp (Ctenopharyngodon idella) / Aquaculture 88:273~284
Choi GC / 1992 / Induced breeding and indoor culture of the catfish (Silurus asotus) (Teleostomi:Siluridae) / J. Aquacult 5:117~126
Chyung MK / 1996 / The Fishes of Korea / Ilji Co. :218~219
Currens KP / 1989 / Effect of different feeding regimes on the morphometrics of chinook salmon (Oncorhynychus tshawtscha) and rainbow trout (O. mykiss) / Copeia 3:689~695
Cassani JR / 1990 / Problems associated with tetraploid induction and survival in grass carp (Ctenopharyngodon idella) / Aquaculture 88:273~284
Choi GC / 1992 / Induced breeding and indoor culture of the catfish (Silurus asotus) (Teleostomi:Siluridae) / J. Aquacult 5:117~126
Chyung MK / 1996 / The Fishes of Korea / Ilji Co. :218~219
Currens KP / 1989 / Effect of different feeding regimes on the morphometrics of chinook salmon (Oncorhynychus tshawtscha) and rainbow trout (O. mykiss) / Copeia 3:689~695
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