期刊
REGIONAL STUDIES IN MARINE SCIENCE
卷 42, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.rsma.2021.101621
关键词
Condition factor; Reproductive pattern; Age; Growth; Otolith; Sardinella aurita
资金
- United States Agency for International Development/Collaborative Management for a Sustainable Fisheries Future in Senegal [4598A11R238-ECAT]
The study found that most of the life history traits of round sardinella Sardinella aurita remained stable over the past few decades, but the size at first sexual maturity and absolute fecundity showed significant increases. It is recommended to reduce fishing efforts to maintain stocks of this species along the Senegal coast.
The main life history traits of the round sardinella, Sardinella aurita Valenciennes 1847 were updated in Senegalese coastal waters, together with an evaluation of the captures over the last 33 years (19812013). In the context of global change and an increase in the average sea surface temperature along the Senegalese coast, most of the life history traits of S. aurita, such as condition factor, period of reproduction, egg sizes, relative fecundity and growth did not change significantly over the years. In contrast, the size at first sexual maturity and the absolute fecundity increased significantly, and current catches recorded less large individuals. The growth was rapid and very variable, with a longevity estimated at 6-7 years. These updated data for life history traits show that the round sardinella was fully exploited in the area, that the fishing effort for this species should be reduced, and that the minimum size (120 mm) authorized by the Senegalese fisheries code should be increased (185-200 mm) to maintain stocks along the Senegal coast. (c) 2021 Elsevier B.V. All rights reserved.
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