Scientia Marina, Vol 70, No 1 (2006)

Comparative morphometrics of two populations of Mugil curema (Pisces: Mugilidae) on the Atlantic and Mexican Pacific coasts


https://doi.org/10.3989/scimar.2006.70n1139

Ana Laura Ibáñez-Aguirre
Universidad Autónoma Metropolitana-Iztapalapa, Mexico, Mexico

The University of Hull International Fisheries Institute, Cottingham Road, Hull, HU6 7RX, Hull, UK.

Esther Cabral-Solís
CRIP-Manzanillo, INP.

Manuel Gallardo-Cabello
Instituto de Ciencias del Mar y Limnología, UNAM., Mexico

Elaine Espino-Barr
CRIP-Manzanillo, INP.

Abstract


A population of Mugil curema in the Gulf of Mexico was compared with one in the Pacific Ocean using nine morphometric variables. The allometries of each measurement were estimated in relation to total length. Morphometric variations were analyzed using the normalization of the individuals of each group and two multivariate methods: correspondence analysis, used to explore the information, and discriminant analysis. Results indicated that the diameter of the eye differentiated the populations of both coasts, the Atlantic population showed a larger eye diameter. However, other than this and the body width (which can be strongly influenced by sexual maturation) there was no difference between the shapes of both populations. We discuss the larger morphometric variability of the Atlantic population which may be due to the presence of more than one population unlike the Pacific population.

Keywords


mullets; fish; morphometry; relative growth; Mugil curema; Gulf of Mexico; Mexican Pacific

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References


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