Morphometry and morphology of fish otoliths on the coast of the state of Maranhão, Brazil

Morphometry and morphology of fish otoliths on the coast of the state of Maranhão, Brazil

The main objective of this study was to evaluate the biometric relationships between the species Bagre bagre, Lutjanus synagris and Nebris microps and their otoliths. The relationship between the size of the otolith (length and weight) and the size of the fish (standard length and total weight) was...

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Bibliographic Details
Published in:Brazilian journal of biology Vol. 84; p. e279163
Main Authors: Santos, K F S, Silva, L N, Silva, N B A, Fernandes, J F F, Garcia, A V S, Figueiredo, M B
Format: Journal Article
Language:English
Published: Brazil Instituto Internacional de Ecologia 2024
Subjects:
Animals
Bagre bagre
BIOLOGY
Brazil
Catfishes
Lutjanus synagris
morphometry characterization
Nebris microps
Otolithic Membrane - anatomy & histology
Perciformes
sagittae
Brazil
sagittae
morphometry characterization
Nebris microps
caracterização morfométrica
Bagre bagre
Lutjanus synagris
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Summary:The main objective of this study was to evaluate the biometric relationships between the species Bagre bagre, Lutjanus synagris and Nebris microps and their otoliths. The relationship between the size of the otolith (length and weight) and the size of the fish (standard length and total weight) was determined using the linear regression model (y = a + bx). For the morphological description, the otoliths of three specimens were selected by standard length class (10mm). The morphological characters analyzed were chosen according to traditional literature. Three hundred eight specimens of B. bagre, 200 of L. synagris and 237 of N. microps were analyzed. Throughout the collection period, the source of the capture of individuals was the municipality of Raposa. The linear correlations for fish and otolith length for B. bagre were 0.9129 and 0.9652, respectively. For L. synagris, the coefficients were 0.8634 and 0.8672, while for N. microps, 0.9597 and 0.8636, respectively. The morphological classification of L. synagris and N. microps is of the Saggita type, and the B. bagre species is of the Lapillus type. From the data presented here, it is possible to observe that otolith morphometric and morphological data can serve as a parameter to estimate the relationship between the fish and the otolith in terms of its biomass and the length of an individual and a population.
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ISSN:1519-6984
1678-4375
1678-4375
DOI:10.1590/1519-6984.279163