SEXUAL MATURITY IN SEA TROUT, SALMO-TRUTTA L, RUNNING UP THE RIVER CALONNE (NORMANDY, FRANCE) AT THE FINNOCK STAGE

被引：13

作者：

MAISSE, G ^{[1
]}

MOUROT, B ^{[1
]}

BRETON, B ^{[1
]}

FOSTIER, A ^{[1
]}

MARCUZZI, O ^{[1
]}

LEBAIL, PY ^{[1
]}

BAGLINIERE, JL ^{[1
]}

RICHARD, A ^{[1
]}

机构：

[1] CONSEIL SUPER PECHE,DELEGAT REG 2,F-35510 CESSON,FRANCE

来源：

JOURNAL OF FISH BIOLOGY | 1991年 / 39卷 / 05期

关键词：

SALMO-TRUTTA; FINNOCK; MATURITY; VITELLOGENIN; ELISA;

D O I：

10.1111/j.1095-8649.1991.tb04400.x

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Sexual maturation in sea trout (Salmo trutto L.) running up the River Calonne (Normandy, France), at the finnock stage, is characterized. Autopsy of 118 finnock in summer showed that 87 ± 7% aged 2+ and 33 ± 15% aged 1 + were undergoing gametogenesis. In autumn all the fish were maturing. The analysis of plasma levels of 11‐ketotestosterone, 17β‐oestradiol, maturational gonadotropin and vitellogenin showed that only females in vitellogenesis can be well identified in summer (plasma vitellogenin greater than 0.30 mg ml‐1). The morphological recognition of females among 134 autumn finnock and the ELISA assay of plasma vitellogenin of 814 summer finnock, demonstrated that vitellogenic females represented 12 ± 2%0 of the 1 + individuals and 46 ± 2% of 2+ fish captured during the 1985 run. The question of a possible relationship between the salinity tolerance ofjuvenile trout migrating towards the sea in the spring and their age on first migration in the river is discussed. Copyright © 1991, Wiley Blackwell. All rights reserved

引用

页码：705 / 715

页数：11

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