2020
DOI: 10.11606/1807-0205/2020.60.09
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Abstract: This study aimed to verify variations in the form of the sagitta otolith of Menticirrhus americanus as to their ontogeny, sex and stage of such structure. Ontogenetically were found significant differences (p < 0.05) for all shape indices (aspect ratios, shape factor, rectangularity, ellipticity, relative surface of sulcus acusticus) and also in the wavelet of the otolith. The CVA presented a 98.6% correct reclassification of the otolith between interval class. Sexual variations were found in the wavelet an… Show more

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Cited by 9 publications
(12 citation statements)
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“…Here, again, a change in habitat for juveniles and adults may be occurring. The otoliths of Menticirrhus are elongated (Siliprandi et al, 2014;Carvalho et al, 2020), as also observed for M. cuiaranensis in the present study, but no change was observed in the aspect ratio for the length range analyzed here.…”
Section: Discussionsupporting
confidence: 86%
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“…Here, again, a change in habitat for juveniles and adults may be occurring. The otoliths of Menticirrhus are elongated (Siliprandi et al, 2014;Carvalho et al, 2020), as also observed for M. cuiaranensis in the present study, but no change was observed in the aspect ratio for the length range analyzed here.…”
Section: Discussionsupporting
confidence: 86%
“…The aspect ratio and the presence of a small rostrum indicate that P. virginicus and C. nobilis inhabit consolidated and soft substrates, respectively (Brenha-Nunes et al, 2016;Santificetur et al, 2017). The absence of rostrum indicates that M. cuiaranensis lives in environments of unconsolidated sediment as mentioned for other species of the same genus Menticirrhus (Carvalho et al, 2020). Polydactylus virginicus showed a reduction in the aspect ratio in specimens larger than 15 cm TL, when this species starts the maturation process (Freire et al, 2020).…”
Section: Discussionmentioning
confidence: 69%
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“…In the present study, the weight of the sagitta in the E. tetradactylum is increased with the growth of total body length of the individuals in the young male groups with smaller body size (i.e., the sagitta weight in group I fishes is lesser than that in the group II), while this increment of the otolith weight is restricted in the mature male group with larger body size (i.e., the sagitta weight in the group III fishes is almost similar to that in the group IV). Furthermore, the morphometric measurements of the sagitta in E. tetradactylum reveal that the length of the otolith is significantly related to the total body length of the fishes instead of the otolith width and also reported in other fish families such as Nototheniidae (Lombarte et al, 1991), Merluccidae (Lombarte & Lleonart, 1993); Labridae (Skeljo & Ferri, 2012); Cyprinidae (Kontaş & Bostanci, 2015), Sparidae (Khedher & Fatnassi, 2018), Sciaenidae (Carvalho et al, 2020). It is assumed that the sagitta formation in fishes may be completed at a certain body length due to constant weight.…”
Section: Discussionmentioning
confidence: 57%
“…The otolith shape usually has an interspecific pattern among the species Echeverría 1999, Tuset et al 2008), however, some internal (physiological) and external factors can modify the shape of otoliths in populations of the same species throughout the ontogenetic development. Several studies demonstrate how the shape of the otoliths can vary (Carvalho and Corrêa 2014, Maciel et al 2019, Carvalho et al 2020 and the ontogenetic variation influenced by growth has already been described for several species (Capoccioni 2011, Vignon 2012, Carvalho et al 2015, Yan et al 2017, Song et al 2019.…”
Section: Introductionmentioning
confidence: 87%