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Investigaciones marinas

versión On-line ISSN 0717-7178

Resumen

VEGA, Marco A.; ROCHA, Francisco J.  y  OSORIO, Cecilia. Compared morphometry of squid statoliths Loligo gahi d'Orbigny, 1835 (Cephalopoda: Loliginidae) of northern Perú and Falkland islands. Investig. mar. [online]. 2001, vol.29, n.1, pp. 3-9. ISSN 0717-7178.  http://dx.doi.org/10.4067/S0717-71782001000100001.

A total of 241 statoliths were analyzed: 141 belonging to Loligo gahi from the Northern Perú (70 left statoliths and 71 right statoliths) corresponding to 34 males and 47 females, and 100 from the Falkland Islands (50 left statoliths and 50 right statoliths) corresponding to 35 males and 23 females. Total length (TL), dome length (DL) and face length (FL) were measured, determining in each specimen the mantle dorsal length (ML) and sex. The measures became quotients of ML, and were compared using discriminant analysis. Significant differences between the left statolith and the rigth statolith were not observed in either sex, reason why those of the right hand side were compared. Significant differences between males and females from the North of Perú were found as well as between both sexes from those of the Falkland Islands. There were also significant differences for individuals of the same sex between both zones. The meaning of the differences found between L. gahi statoliths from Perú and Falkland Islands are being discussed

Palabras llave : Loligo gahi; statoliths; morphometry; discriminating analysis; Perú; Falkland Islands.

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