Length-weight relationships of four finfish commercial species from the southern Gulf of Mexico

The relationship between total length and total weight (LWR) of four commercial species of finfish captured in the southern Gulf of Mexico (Lachnolaimus maximus, Ocyurus chrysurus, Mycteroperca bonaci, and Mycteroperca microlepis) was estimated. Two of these species are captured in the region by the...

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Published inLatin american journal of aquatic research Vol. 49; no. 2; pp. 369 - 375
Main Authors Velázquez-Abunader, Iván, Brulé, Thierry, Cabrera, Miguel A. A., López-Rocha, Jorge A. A.
Format Journal Article
LanguageEnglish
Published Valparaiso Pontificia Universidad Catolica de Valparaiso 01.05.2021
Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
Subjects
Allometry
Catch per unit effort
Commercial species
FISHERIES
Fishing
Fishing effort
Fishing pressure
Length-weight relationships
MARINE & FRESHWATER BIOLOGY
OCEANOGRAPHY
Standard deviation
Stock assessment
Weight
Wounding gear
Brazil
Gulf of Mexico
Caribbean Sea
United States > US
Mycteroperca microlepis
Lachnolaimus maximus
allometry
Mycteroperca bonaci
Campeche Bank
Ocyurus chrysurus
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Summary:The relationship between total length and total weight (LWR) of four commercial species of finfish captured in the southern Gulf of Mexico (Lachnolaimus maximus, Ocyurus chrysurus, Mycteroperca bonaci, and Mycteroperca microlepis) was estimated. Two of these species are captured in the region by the small-scale fleet, while the other two are targeted by small-scale and semi-industrial fleets using harpoons, handlines, and long-lines. For the assessment, the organisms were sampled at the landing decks in the study area in two periods: 1996-1999 (semi-industrial fleet) and from April 2017 to May 2018 (small-scale fleet). A total of 2780 individuals were sampled which 2775 individuals were used to obtain LWR functions. The four species showed negative allometric growth with b < 3 for the 2017-2018 period, two species showed positive allometric growth with b > 3 for the 1996-1999 period. This type of information is an important input for the stock assessment of these species that support important fisheries in the zone and are under high fishing pressure levels.
ISSN:0718-560X
0718-560X
DOI:10.3856/vol49-issue2-fulltext-2505