Journal
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
Volume 91, Issue 6, Pages 1193-1196Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0025315410001293
Keywords
conservation; elasmobranchs; fisheries landings; management
Categories
Funding
- Brazilian National Research Council (CNPq) [485120/2007-0]
- Ceara State Research Council (FUNCAP) [DCR 0039-2.04/07-FCPC 1514-52]
- CNPq
Ask authors/readers for more resources
The nurse shark, Ginglymostoma cirratum, is considered an endangered species in Brazil and its capture by fisheries forbidden. Despite such legislation, nurse sharks continue to be caught as these laws are unenforced and fisheries are not monitored. The goal of the present study was to describe the population structure of nurse sharks caught off Ceara State, north-eastern Brazil, based on the following aspects: abundance and size, sex-ratio, fisheries incidence and seasonality of captures. Landings were monitored weekly during a two-year period. A total of 189 specimens were recorded. Total length (TL) varied between 73 and 274 cm. The male-female ratio did not differ significantly (1.19 female:1 male). TL of individuals landed as carcasses was estimated based on interdorsal length. The following equation was obtained for males and females: TL = 22.6061D + 14.24 (R(2) = 0.9505). Most of the landed sharks were juveniles (86.2%). No seasonal pattern of abundance and TL variation was observed. Management of this fishery is required in order to prevent localized over-fishing of nurse sharks.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available