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....
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Instituto de Limnología "Raúl A. Ringuelet. (CONICET-UNLP)
2019-03-01
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doaj-f824e56f54a5418c8fb9af6d03393a562021-02-03T15:42:35ZspaInstituto de Limnología "Raúl A. Ringuelet. (CONICET-UNLP)Biología Acuática1668-48692019-03-0124Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi)María Jimena González Naya0Alejandra Volpedo1Sergio Enrique Gómez2L. A. Carignano3M. V. Sanchez4Museo Argentino de Ciencias Naturales «Bernardino Rivadavia»Departamento de Biodiversidad y Biología Experimental, FCEyN-UBAMuseo Argentino de Ciencias Naturales «Bernardino Rivadavia»Museo Argentino de Ciencias Naturales «Bernardino Rivadavia»Museo Argentino de Ciencias Naturales «Bernardino Rivadavia» 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. https://revistas.unlp.edu.ar/bacuatica/article/view/6558Lungfishotolithsskullexperimental biologybehaviourpeces pulmonados |
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DOAJ |
language |
Spanish |
format |
Article |
sources |
DOAJ |
author |
María Jimena González Naya Alejandra Volpedo Sergio Enrique Gómez L. A. Carignano M. V. Sanchez |
spellingShingle |
María Jimena González Naya Alejandra Volpedo Sergio Enrique Gómez L. A. Carignano M. V. Sanchez Notas sobre cráneo, otolitos y biología de <i>Lepidosiren paradoxa</i> (Pisces, Dipnoi) Biología Acuática Lungfish otoliths skull experimental biology behaviour peces pulmonados |
author_facet |
María Jimena González Naya Alejandra Volpedo Sergio Enrique Gómez L. A. Carignano M. V. Sanchez |
author_sort |
María Jimena González Naya |
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) |
publisher |
Instituto de Limnología "Raúl A. Ringuelet. (CONICET-UNLP) |
series |
Biología Acuática |
issn |
1668-4869 |
publishDate |
2019-03-01 |
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.
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topic |
Lungfish otoliths skull experimental biology behaviour peces pulmonados |
url |
https://revistas.unlp.edu.ar/bacuatica/article/view/6558 |
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