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Rev. biol. mar. oceanogr. 47(2): 351-357

Nota Científica

 


El uso de otolitos y huesos de la cabeza para la identificación de dos especies del género Merluccius, en estudios de predador-presa

Sergio Matías Delpiani1, 2, Mariano González-Castro1, 2 & Juan Martín Díaz de Astarloa1, 2

1Grupo de Biotaxonomía Morfológica y Molecular de Peces, IIMyC- CONICET, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, B7602AYL Mar del Plata, República Argentina
2Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rivadavia 1917, Buenos Aires, República Argentina

E-mail: sdelpiani@mdp.edu.ar

 

A comparative osteological analysis of 6 bones and the sagitta otolith in Merluccius hubbsi and M. australis, two species that live in Southwest Atlantic, has been carried out. The objective was to contribute to identifying these two species as prey in the diet studies, and further description of these bony elements for a better taxonomic identification. Fresh bones disarticulation techniques were used. Potentially diagnostic features were observed for discrimination of species in the following elements: urohyal, maxilla, premaxilla, dentary, quadrate, hyomandibular, and the sagitta otolith.

Key words:  Hake, osteology, piscivory, prey

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