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Análisis exploratorio basado en caracteres morfológicos y en landmarks en tres especies de granaderos de la familia Macrouridae: Coelorinchus fasciatus, Macrourus holotrachys y Macrourus carinatus.

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Author
Jeréz, B.
Hernández, D.
Date
2015

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Alternative Title
Exploratory analysis based on morphological characters and landmarks in three species of grenadiers of the Macrouridae Family: Coelorinchus fasciatus, Macrourus holotrachys and Macrourus carinatus.
Abstract
In order to identify Coelorinchus fasciatus, Macrourus holotrachys and M. carinatus, three grenadier species, 349 individuals were analyzed and 16 morphometric variables were explored using landmarks. Each variable was fitted considering the linearized allometry relationship eliminating the size effect. The null hypothesis of equal slopes was tested and the Principal Components Analysis (PCA) performed for each variable and each species. The results obtained allow to conclude that the major differences are found between C. fasciatus and M. carinatus. PCA detected those differences in the morphology of the cephalic region of species of the Coelorinchus and Macrourus genera. In M. holotrachys and M. carinatus, the two large grenadiers species, differences were found in the anterior portion of the head, specifically in the orbital region. The result of the length-weight relationship analysis between pairs of species showed disparities between C. fasciatus and M. carinatus.
Para identificar a Coelorinchus fasciatus, Macrourus holotrachys y M. carinatus, tres especies de granaderos, se analizaron 349 individuos y exploraron 16 variables morfométricas utilizando landmarks. Cada variable se ajustó considerando la relación de alometría linealizada eliminando el efecto del tamaño. Se contrastó la hipótesis nula de igualdad de pendientes y se aplicó el Análisis de Componentes Principales (ACP) para cada variable y cada especie. Los resultados obtenidos permiten concluir que las mayores diferencias se presentan entre C. fasciatus y M. carinatus. En el ACP se las detectó en la morfología de la región cefálica de las especies de los géneros Coelorinchus y Macrourus. En M. holotrachys y M. carinatus, las dos especies de granaderos grandes, las diferencias se hallaron en la porción anterior de la cabeza, específicamente en la región orbital. El resultado del análisis de la relación longitud-peso entre pares de especies mostró disparidades entre C. fasciatus y M. carinatus.
Journal
Revista de Investigación y Desarrollo Pesquero
Volume
27
Page Range
pp.61-70
URI
http://hdl.handle.net/1834/10962
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Revista de Investigación y Desarrollo Pesquero

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