DISTRIBUTION, POPULATION-STRUCTURE, GROWTH, AND REPRODUCTION OF THE GREATER SILVER SMELT, ARGENTINA-SILUS (PISCES, ARGENTINIDAE), OF THE SKAGERRAK AND THE NORTH-EASTERN NORTH-SEA

被引:7
作者
BERGSTAD, OA
机构
[1] Institute of Marine Research, Flodevigen Marine Research Station, His
关键词
ARGENTINA-SILUS; NORTH SEA; DISTRIBUTION; POPULATION STRUCTURE; BIOLOGY;
D O I
10.1006/jmsc.1993.1015
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Greater silver smelt (Argentina silus) is an abundant benthopelagic species at depths greater that 200 m in the north-eastern North Sea and the Skagerrak. Mainly in April–May, adults concentrate to spawn in the deepest parts. Juveniles inhabit shallower marginal areas year-round. Some 30–35 age-groups occur and spawning concentrations are dominated by 20-year-old and older individuals. Age at first spawning, as determined from otoliths, is 4–9 years, usually 6 years. Females grow larger than males, asymptotic lengths being 42.6 and 40.3 cm, respectively. © 1993 Conseil International pour l’Exploration de la Mer.
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页码:129 / 143
页数:15
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