Biometric relationships between body size and otolith size in 15 demersal marine fish species from the northern Brazilian coast

被引:1
|
作者
de Sena Oliveira, Rory Romero [1 ]
Andrade, Marcelo Costa [1 ]
Machado, Fabiola Seabra [1 ]
Santana Cunha, Elida Jesana [1 ]
de Freitas, Flaviane Souto [1 ]
Cavalleiro de Macedo Klautau, Alex Garcia [2 ]
Giarrizzo, Tommaso [1 ]
Saint-Paul, Ulrich [3 ]
机构
[1] Univ Fed Para, Nucleo Ecol Aquat & Pesca Amazonia, Grp Ecol Aquat, Belem, Para, Brazil
[2] Inst Chico Mendes Conservacao Biodiversidade, Ctr Pesquisa & Gestao Recursos Pesqueiros Litoral, Belem, Para, Brazil
[3] Leibniz Zentrum Marine Tropenforsch ZMT, Bremen, Germany
关键词
Amazon delta; bycatch; sagitta; Neotropics; Sciaenidae; stomach content; LENGTH; SEA;
D O I
10.1590/1809-4392201900571
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The relationships between fish size and sagitta otolith measurements were calculated for the first time for 15 species belonging to six families from the northern Brazilian coast. A total of 220 fish were sampled from the bycatch landed by the bottom-trawl industrial shrimp-fishing fleet between August and September 2016. All species had strong relationships between otolith measurements and fish total length with the coefficient of determination (r(2)) ranging between 0.71 and 0.99. The variable most strongly related to fish total length was found to be the sagittal otolith length (OL) with 98% of the variability. These relationships are a useful tool to estimate length and mass of preyed fish from otoliths found in stomach contents of marine predators.
引用
收藏
页码:299 / 306
页数:8
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