Growth rate and age at migration of Anguilla anguilla

被引:79
作者
Poole, WR [1 ]
Reynolds, JD [1 ]
机构
[1] TRINITY COLL DUBLIN, DEPT ZOOL, DUBLIN, IRELAND
关键词
Anguilla anguilla; incremental growth; age ar migration; differential growth between the sexes;
D O I
10.1111/j.1095-8649.1996.tb01458.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The length, age and growth rate were investigated for downstream migrating male and female eels in the unexploited Burrishoole system, western ireland. Significant differences were found in the age and length at migration with the larger, older female eels also showing faster annual growth as early as the first year in fresh water. Female eels normally migrated at lengths from 40 . 5 cm, exceptionally to 92 . 9 cm, and male eels at lengths between 28 . 9 and 46 . 0 cm. Back-calculation showed an irregular pattern of fast and slow annual growth. Mean annual growth increments were almost always greater for females than for males. (C) 1996 The Fisheries Society of the British Isles
引用
收藏
页码:633 / 642
页数:10
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