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Biometric relation between body size and otolith size of seven commercial fish species of the south‐western Atlantic
Author(s) -
Assis Daniel Alvares Silveira,
Santos Jonas de Andrade,
Moraes Leonardo Evangelista,
Santos Alexandre Clistenes de Alcântara
Publication year - 2018
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.13744
Subject(s) - otolith , mugil , biology , fishery , perciformes , fish <actinopterygii>
Given the importance and applicability of these biometric relations, the present work aimed to verify the existence of correlations between the length of saggitae otoliths and the body size of seven south‐western Atlantic marine fish species and to generate equations to estimate the body size of these species through otolith measurements. Fifty otoliths of Centropomus parallelus , Centropomus undecimalis , Lutjanus analis , Lutjanus jocu , Lutjanus synagris , Chaetodipterus faber and Mugil curema were collected for analysis. Significant relations between otolith length and total length and otolith width and total length were found for all the species. The highest coefficient of determination was observed for Centropomus undecimalis and Lutjanus synagris , for both relations, and the lowest was observed for Mugil curema . The results show that estimates of body size of the species through biometric analyses of otoliths are reliable. Based on this, the equations generated to obtain the total length of the fish using biometric otolith data can be used in dietary studies of top predators and in paleontological recostructions of modern fish.