INTERPOPULATION VARIATION IN REPRODUCTIVE TRAITS OF ANADROMOUS FEMALE BROWN TROUT, SALMO-TRUTTA L

被引：52

作者：

LABEELUND, JH ^{[1
]}

HINDAR, K ^{[1
]}

机构：

[1] NORWEGIAN INST NAT RES,N-7004 TRONDHEIM,NORWAY

来源：

JOURNAL OF FISH BIOLOGY | 1990年 / 37卷 / 05期

关键词：

egg diameter; fecundity; gonadosomatic index; local populations; Salmo trutta;

D O I：

10.1111/j.1095-8649.1990.tb02539.x

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

We studied reproductive traits in nine anadromous brown trout, Salmo trutta L., populations in seven Norwegian rivers. Within populations we found a positive significant correlation between fish length and fecundity in all populations, and between fish length and egg diameter in five populations. There were significant differences in these relationships between populations from different rivers, and between populations from different locations within rivers. When adjusted for variation in fish length, mean fecundity and mean egg diameter showed a negative significant correlation among populations. The ratio of gonadal weight to somatic weight (gonadosomatic index) varied significantly among populations but was not associated with variation in fish length. Comparatively few large eggs were found in brown trout populations co‐existing with several other fish species. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：755 / 763

页数：9

共 29 条

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Bagenal T.B., 1978, P75

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