INVESTIGADORES
VOLPEDO Alejandra Vanina
artículos
Título:
Inferring ecological connectivity between populations of Opsanus beta (Goode & Bean, 1880) from the southern Gulf of Mexico and the South-western Atlantic coast
Autor/es:
CARVALHO, BARBARA MAICHAK DE; PÉREZ, JOSÉ ANTÔNIO MARTÍNEZ; AGUILAR-PERERA, ALFONSO; NOH QUIÑONES, VIRGINIA; TOMÁS, ACÁCIO RIBEIRO GOMES; VITULE, JEAN; VOLPEDO, ALEJANDRA
Revista:
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
Editorial:
CAMBRIDGE UNIV PRESS
Referencias:
Año: 2022 p. 1 - 7
ISSN:
0025-3154
Resumen:
Otoliths are an excellent tool in studies on ecological connectivity of fish species populations.Opsanus beta is an invasive species introduced on the Brazilian coast, but not native from theGulf of Mexico. The present study aimed to compare the otolith contours of specimens collectedin Mexico (Celestún, CEL) and in two Brazilian estuaries (Santos Bay, STB, andParanaguá Estuarine Complex, PEC). In the laboratory, 99 otoliths were extracted, photographedand compared using wavelet analysis. The otolith contours varied between sites(39 from CEL, 26 from STB and 34 from PEC). The linear discriminant analysis correctlyreclassified 87.9% of otoliths by sites, with the best reclassifications in the CEL (97.36%),followed by PEC (88.23%) and SBT (73.07%). MANOVA showed significant differences inotolith contours between sites (F = 5.37; P < 0.005). The otolith contour from CEL was significantlydifferent from those from the PEC and SBT. However, the otolith contour of the twoBrazilian estuaries did not significantly differ among them (MANOVA, P > 0.005). Our resultsindicate O. beta populations on the Brazilian coast are connected, and probably isolated fromthe Mexican population.