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Descripcion del pterigopodo en cuarto especies de Squalidae (Squaliformes) de la Costa de Valdivia, Chile = Pterigopod morphological description in four Squalidae (Squaliformes) species from Valdivia coast, Chile
Lamilla, J.; Suazo, V.; Escare, P.; Protti, M. (1997). Descripcion del pterigopodo en cuarto especies de Squalidae (Squaliformes) de la Costa de Valdivia, Chile = Pterigopod morphological description in four Squalidae (Squaliformes) species from Valdivia coast, Chile. Gayana Oceanol. 5(1): 49-61
In: Gayana Oceanológica. Universidad de Concepcion. Facultad de Ciencias Naturales y Oceanograficas: Concepción. ISSN 0716-9655, more
Peer reviewed article  

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  • Lamilla, J.
  • Suazo, V.
  • Escare, P.
  • Protti, M.

Abstract
    The objective of this work is to describe the external and internal structures of theclaspers of four species of Squalidae: Etmopterus granulosus, Deania calcea,Centroscymnus crepidater and Centroscymnus macracanthus, captured in theValdivia coast, Chile. The clasper of E. granulosus is composed by of 4 basal and3 axial elements, and a terminal group with 6 external and 5 internal components;D. calcea has the claspers composed by 3 basal and 3 axial cartilages, and theterminal group with 2 external and 2 internal elements; C. crepidater and C.macracanthus have the claspers composed by 3 basal and 3 axial cartilages, andthe terminal group with 7 external and 4 internal elements. In these species there isan intergeneric structural variation related to the shape and number of components.The claspers in the two species of Centroscymnus are very similar.

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