DISTRIBUTION AND RELATIVE ABUNDANCE OF THE BLUE SHARK, Prionace glauca, IN THE SOUTH BRAZIL

被引：0
|
作者：
Legat, Jefferson F. A. [1 ]
Vooren, Carolus M. [2 ]
机构：
[1] Embrapa Meio Norte, Empresa Brasileira Pesquisa Agropecuaria, BR-64200970 Parnaiba, PI, Brazil
[2] Fundacao Univ Fed Rio Grande, Lab Elasmobranquios & Aves Marinhas, BR-96201900 Rio Grande, RS, Brazil
来源：
BOLETIM DO INSTITUTO DE PESCA | 2008年 / 34卷 / 03期
关键词：
CPUE; South Atlantic Ocean; water masses;
D O I：
暂无
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
A total of 233 blue sharks Prionace glauca (Linnaeus, 1758) were caught by pelagic longline between 1996 and 1999, at different seasons. The study area was the continental slope of the southwestern Atlantic Ocean and adjacent oceanic waters, between 27 S e 35 S, at fishing depths between 25 and 200 m. According to CPUE (individuals/1.000 hooks), P. glauca was abundant in November (24.0) and July (37.5); showed low abundance during March/April (9.2) and was scarce in August (2.2) and December (1.38). The highest concentrations were observed in South Atlantic Central Water (SACW). The scarcity of P. glauca was related to the presence of Subantartic Water and thermic inversions between surface and 100 m deep, approximately.
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页码：425 / 432
页数：8
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