Ontogenetic variation in the sagitta otolith of Centropomus undecimalis (Actinopterygii: Perciformes: Centropomidae) in a tropical estuary

Neto, Renato Bot; Carvalho, Bárbara Maichak de; Júnior, Roberto Schwarz; Spach, Henry Louis

doi:10.3750/aiep/03014

Cited by 2 publications

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References 26 publications

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“…Several studies have described the morphology and morphometry of otoliths of species important for artisanal and recreational fisheries in southeastern-southern Brazil (Siliprandi et al, 2014;Brenha-Nunes et al, 2016;Maciel et al, 2019;Dal Negro et al, 2021). Conversely, few studies have been conducted in northeastern Brazil, making it impossible future studies of connectivity or fishing stocks for species with wide distribution along the Brazilian coast (Freire et al, 2017;Assis et al, 2020;Bot et al, 2020). Thus, this study was conducted with the objective of describing the morphology and morphometry of sagitta otoliths of P. virginicus, M. cuiaranensis and C. nobilis, and assessing the occurrence of ontogenetic changes to serve as basis for future studies related to diet composition and connectivity between populations.…”

Section: Introductionmentioning

confidence: 99%

Sagitta otolith of three demersal species in a tropical environment

et al. 2021

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The objective of this study was to describe the morphology and morphometry of saggitta otoliths of Polydactylus virginicus, Menticirrhus cuiaranensis and Conodon nobilis in a tropical environment. Fishes were caught with rod and reel in competitive fishing events promoted in 2014-2015 along the coast of Sergipe. A total of 174 pairs of sagitta otoliths of P. virginicus, 181 of M. cuiaranensis and 77 of C. nobilis was extracted. In general, the sagitta otoliths of all three species analyzed here presented different morphology and shape indices. The permutational multivariate analysis of variance (PERMANOVA) demonstrated significant differences among species and ontogenetic phases within each species using morphometry and shape indices. The linear discriminant analysis (LDA) presented a 98.3% correct reclassification of the otoliths by species.

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Section: Introductionmentioning

confidence: 99%

Sagitta otolith of three demersal species in a tropical environment

et al. 2021

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Growth stanza in fish life history using otoliths shape: the protandric Centropomus case (Carangaria: Centropomidae)

et al. 2021

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Morphoanatomical or physiological changes coupled with changes in body size are known as allometric relationships. The objective of this study was to identify the points of growth changes in Centropomus based on otolith morphometry and morphogeometry. For this purpose, 455 individuals of C. undecimalis and 176 of C. parallelus were collected from artisanal fishermen of the coast of the state of Alagoas, Brazil. The sagittal otoliths were measured for length, height, perimeter, area and weighed. The potential and polyphasic models were fitted between total fish length and otolith length. The morphotypes otoliths wen describe by form Fourier descriptors and shape indices. The polyphasic model detected three growth phases. The first stanza for C. undecimalis was at 46.8 cm and the second at 75.9 cm. For C. parallelus, it was at 18.8 cm and at 41.2 cm. Each stanza has a specific otoliths morphotype in both species. The otoliths of C. undecimalis and C. parallelus exhibited ontogenetic allometric changes in their growth pattern with two stanzas changing points. The stanzas corresponded to specific lengths reached by individuals over their life cycles, such as their size at maturity and length at sexual reversion.

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Ontogenetic variation in the sagitta otolith of Centropomus undecimalis (Actinopterygii: Perciformes: Centropomidae) in a tropical estuary

Cited by 2 publications

References 26 publications

Sagitta otolith of three demersal species in a tropical environment

Sagitta otolith of three demersal species in a tropical environment

Growth stanza in fish life history using otoliths shape: the protandric Centropomus case (Carangaria: Centropomidae)

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