Age and growth of bluemouth, Helicolenus dactylopterus (Delaroche, 1809) from the Azores

被引：29

作者：

Abecasis, D. ^{[1
]}

Costa, A. R. ^{[1
]}

Pereira, J. G. ^{[1
]}

Pinho, M. R. ^{[1
]}

机构：

[1] Univ Acores, Dept Oceanog & Pescas, P-9901862 Horta, Portugal

来源：

FISHERIES RESEARCH | 2006年 / 79卷 / 1-2期

关键词：

Helicolenus dactylopterus; age; growth; otoliths;

D O I：

10.1016/j.fishres.2006.02.010

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The age and growth of the Helicolenus dactylopterus (Delaroche, 1809) in the Azorean waters were studied using whole and sliced otolith readings. Individuals were collected during demersal surveys carried out around the Azores islands and its most important fishing banks and also from commercial landings. A total of 1024 individuals were measured, weighed and their sex was determined. Individuals ranged from 3 to 49 cm total length (TL) and their estimated ages between 0 and 32 years old. The otoliths showed the typical teleost fish pattern with altemated opaque and hyaline rings. Significant differences between sliced and whole otolith readings were found, especially after 7 years old (> 25 cm TL). Sliced otoliths were found easier to read, regardless of TL or age. Comparisons with other studies for the Azores region and other areas are discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：148 / 154

页数：7

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