Diferencias morfométricas de dos especies del género Eatoniella en Isla Navarino, Reserva de Biosfera Cabo de Hornos, Chile

Sebastián Rosenfeld, Cristian Aldea, Jaime Ojeda, Andrés Mansilla, Ricardo Rozzi

Resumen


The external morphometrics of shell and radula morphology were performed in two species of micromollusks of the genus Eatoniella in Navarino Island, Chile. A total of 50 specimens of E. picea and 72 of E. nigra were analyzed. These species have similar morphology, but E. picea has a smaller diameter/length ratio (0.53 ± 0.02) than E. nigra (0.61 ± 0.04). In relation to the radula morphology, E. picea has wider middle cuspid teeth and small denticles in its border, meanwhile E. nigra has pointed central cuspid teeth.


Palabras clave


Micromollusks; Morphology; Shell; Radula; Subantarctic

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DOI: https://doi.org/10.4067/S0718-19572017000100015

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