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- Title
Analysis of growth, weight and relevant indices of diploid and triploid population of tench Tinca tinca (Linnaeus 1758).
- Authors
Buchtová, Hana; Svobodová, Zdenˇka; Flajšhans, Martin; Vorlová, Lenka
- Abstract
Abstract This study determined biometric and weight parameters and relevant indices of diploid and triploid tench. Altogether, 137 siblings of tench were studied. The effect of ploidy level appeared in significantly better growth of triploids (P<0.001) as to biometric [total length (TL), standard length (SL), body height (BH), body width (BW)] and weight [fish weight (FW), carcass weight (CW)] parameters of T[sub 3] of both sexes and of T[sub 3+] females. The effect of ploidy level also appeared as significantly higher dressing percentage (DP; P<0.001) of triploid T[sub 3] females compared with other groups, significantly higher gonad weight (GW) and gonadosomatic index (GSI; P<0.001) of diploid T[sub 3] females, as well as GSI and hepatosomatic index of diploid T[sub 3+] females. The effect of sex appeared in significantly higher (P<0.001) biometric (TL, SL, BH, BW) and weight (FW, CW) parameters of T[sub 3] females of both ploidy levels, as well as of triploid T[sub 3+] females. The effect of sex also appeared as significantly higher DP (P<0.001) of males in diploid T[sub 3] fish, as well as of males of both ploidy levels in T[sub 3+] fish and significantly higher GW and GSI (P<0.001) of females in diploid T[sub 3] fish, as well as of females of both ploidy levels in T[sub 3+] fish. This study shows evidence for faster somatic growth and bigger final weight of triploid populations of tench compared with diploids in both age categories T[sub 3] and T[sub 3+].
- Subjects
TENCH; BIOMETRY
- Publication
Aquaculture Research, 2003, Vol 34, Issue 9, p719
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1046/j.1365-2109.2003.00874.x