REVISED ESTIMATES OF AGE AND GROWTH OF THE SANDBAR SHARK (CARCHARHINUS-PLUMBEUS) FROM THE WESTERN NORTH-ATLANTIC

被引：67

作者：

CASEY, JG ^{[1
]}

NATANSON, LJ ^{[1
]}

机构：

[1] UNIV LAVAL,DEPT BIOL,GIROQ,QUEBEC CITY G1K 7P4,QUEBEC,CANADA

来源：

CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES | 1992年 / 49卷 / 07期

关键词：

D O I：

10.1139/f92-162

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Age and growth of the sandbar shark (Carcharhinus plumbeus) were determined from tag and recapture data covering a 26-yr period (1964-90). Results were compared with previously published age and growth estimates based primarily on rings in vertebrae. Recent long-term tag returns suggest that the sandbar shark grows much slower than previously proposed and may take nearly 30 yr to reach maturity. Revised von Bertalanffy parameters (sexes combined) are L(infinity) = 1 86, k = 0.046, and t0 = - 6.45. The limitations of ageing elasmobranchs solely from rings in vertebrae and the need for validating rings in hardparts of fishes are discussed.

引用

页码：1474 / 1477

页数：4

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