Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)

Lungfishes are a singular group of Sarcopterygii which in the Neotropics is represented by Lepidosiren paradoxa. They present anatomical and physiological features that allow them to survive under adverse conditions. Here we described and illustrated the otoliths and determinate their composition. L...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: González Naya, María Jimena, Volpedo, Alejandra, Gómez, Sergio Enrique
Formato: Articulo
Lenguaje:Español
Publicado: 2008
Materias:
Ciencias Naturales
Peces
Biología
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/50757
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-50757
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
Peces
Biología
spellingShingle Ciencias Naturales
Peces
Biología
González Naya, María Jimena
Volpedo, Alejandra
Gómez, Sergio Enrique
Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)
topic_facet Ciencias Naturales
Peces
Biología
description Lungfishes are a singular group of Sarcopterygii which in the Neotropics is represented by Lepidosiren paradoxa. They present anatomical and physiological features that allow them to survive under adverse conditions. Here we described and illustrated the otoliths and determinate their composition. L. paradoxa skull is also described and illustrated with emphasis in the jaw morphology. This skull was compared with the skull of the other extant lungfishes Neoceratodus (Australian lungfish) and Protopterus (African lungfish). Experimental observations were included on the behavior in aquarium and on the construction of galleries under laboratory conditions. L. paradoxa otoliths presented subcircular shape with a convex internal face, a narrow sulcus of regular edges, marginal and parallel to the dorsal edge. The external face presented calcareous concretions and heterogeneously distributed undulations. The otholith chemical composition differs from most of marine and freshwater teleost, but resembles to other dipnoos. The skull streamlined presents numerous bones fusions in the occipital and parietal region and exhibits a significant sagital crest. The jaw suspension showed fusion of superior jaw with the skull. Both jaws have dental plates with prominent crests. The distance between the first and the second crest in the inferior jaw increases in relation to total length. Overall, skull and otolith showed great similarities with the African genus.
format Articulo
Articulo
author González Naya, María Jimena
Volpedo, Alejandra
Gómez, Sergio Enrique
author_facet González Naya, María Jimena
Volpedo, Alejandra
Gómez, Sergio Enrique
author_sort González Naya, María Jimena
title Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)
title_short Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)
title_full Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)
title_fullStr Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)
title_full_unstemmed Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)
title_sort notas sobre cráneo, otolitos y biología de <i>lepidosiren paradoxa</i> (pisces, dipnoi)
publishDate 2008
url http://sedici.unlp.edu.ar/handle/10915/50757
work_keys_str_mv AT gonzaleznayamariajimena notassobrecraneootolitosybiologiadeilepidosirenparadoxaipiscesdipnoi
AT volpedoalejandra notassobrecraneootolitosybiologiadeilepidosirenparadoxaipiscesdipnoi
AT gomezsergioenrique notassobrecraneootolitosybiologiadeilepidosirenparadoxaipiscesdipnoi
bdutipo_str Repositorios
_version_ 1764820475354021890

Ejemplares similares