Sharks caught by the Brazilian tuna longline fleet: an overview

被引：22

作者：

Fredou, Flavia Lucena ^{[1
,2
]}

Tolotti, Mariana Travassos ^{[2
,3
]}

Fredou, Thierry ^{[1
,2
]}

Carvalho, Felipe ^{[4
]}

Hazin, Humberto ^{[5
]}

Burgess, George ^{[6
]}

Coelho, Rui ^{[7
]}

Waters, John D. ^{[8
]}

Travassos, Paulo ^{[1
]}

Vieira Hazin, Fabio Hissa ^{[1
]}

机构：

[1] Univ Fed Rural Pernambuco, Dept Pesca & Aquicultura, BR-52171030 Recife, PE, Brazil

[2] Ctr Rech Halieut Mediterraneenne & Trop CRH, IRD, F-34203 Sete, France

[3] Univ Fed Pernambuco, Dept Oceanog, Programa Posgrad Oceanog, BR-50670901 Recife, PE, Brazil

[4] Univ Florida, Program Fisheries & Aquat Sci, Sch Forest Resources & Conservat, Gainesville, FL 32653 USA

[5] Univ Fed Rural Semi Arido, Dept Ciencias Anim, BR-59625900 Mossoro, RN, Brazil

[6] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA

[7] Univ Algarve, Ctr Ciencias Mar CCMAR, P-8005139 Faro, Portugal

[8] Aquat Res & Conservat Soc, Little Canada, MN 55117 USA

来源：

REVIEWS IN FISH BIOLOGY AND FISHERIES | 2015年 / 25卷 / 02期

关键词：

Southwestern and equatorial Atlantic Ocean; Bycatch; Distribution; CPUE; Length composition; OCEANIC WHITETIP SHARK; PRIONACE-GLAUCA; CATCH RATES; CONSERVATION; CONSEQUENCES; MANAGEMENT; PATTERNS; SIZE; RAYS;

D O I：

10.1007/s11160-014-9380-8

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Large pelagic sharks are distributed throughout all of the oceans and are caught as bycatch in pelagic longline fisheries worldwide. In the southern Atlantic Ocean, more than a dozen shark species are caught by the Brazilian tuna longline fleet. This study compiles information of the main shark species caught by the Brazilian tuna longline fishery in the southwestern and equatorial Atlantic Ocean. Catch and effort data of 14,860 longline sets from the Brazilian chartered tuna longline fleet, between 2004 and 2010, were analyzed. The blue shark Prionace glauca was the main shark species captured by this fishery. Shark catches showed contrasting trends during the study period: the silky (Carcharhinus falciformis) and the oceanic whitetip (C. longimanus) sharks catch increased up to 2008 and then declined, while mako sharks (Isurus spp.) showed an opposite trend. Effort for the Brazilian longline fishery had a higher concentration from 10 degrees N to 30 degrees S and from 20 degrees W to 40 degrees W. High values of catch per unit effort of southwestern and equatorial Atlantic Ocean sharks were heterogeneously distributed and, although elasmobranchs were caught over most of the longline fishing range, only blue sharks were caught in all areas. In the southern Atlantic Ocean, high fishing effort zones overlap significantly with some nursery areas, especially for the oceanic whitetip shark, indicating that these areas are at a direct risk from the industrial longline fishery.

引用

页码：365 / 377

页数：13

共 61 条

[1]

Amorim A., 2009, IUCN RED LIST THREAT

[2]

Amorim A.F., 2002, International Commission for the Conservation of Atlantic Tunas Collective Volume of Scientific Papers, V54, P1341

[3]

[Anonymous], 1995, Statistical methods

[4]

[Anonymous], 1994, B NATL RES I FAR SEA

[5]

[Anonymous], 2009, ICCAT Collective Volume of Scientific Papers, V64, P1343

[6]

[Anonymous], IUCN RED LIST THREAT

[7]

Bass AJ, 1973, 33 OC RES I DURB

[8] Collapse and conservation of shark populations in the Northwest Atlantic [J].

Baum, JK ;

Myers, RA ;

Kehler, DG ;

Worm, B ;

Harley, SJ ;

Doherty, PA .

SCIENCE, 2003, 299 (5605) :389-392

[9]

Bonfil R, 2009, IUCN RED LIST THREAT

[10] Shark Mislabeling Threatens Biodiversity [J].

Bornatowski, Hugo ;

Braga, Raul Reno ;

Simoes Vitule, Jean Ricardo .

SCIENCE, 2013, 340 (6135) :923-923

← 1 2 3 4 5 6 7 →