Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)

Some South American freshwater fishes can improve their capability of aquatic surface respiration (ASR) by developing dermal lip protuberances in the lower jaw. This adaptation was thought to be limited to omnivorous or herbivorous fishes. The present work provides the first evidence that juveniles...

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Detalles Bibliográficos
Autores principales:	Scarabotti, Pablo A., Parma, María Julieta, López, Javier Alejandro, Ghirardi, Romina
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2009
Materias:	Ciencias Naturales Biología floodplain pond Actinopterygii hypoxia Characidae lip extension Pisces Salminus morphological adaptation Argentina
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/35153 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300013&lng=en&nrm=iso&tlng=en
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-35153
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Naturales Biología floodplain pond Actinopterygii hypoxia Characidae lip extension Pisces Salminus morphological adaptation Argentina
spellingShingle	Ciencias Naturales Biología floodplain pond Actinopterygii hypoxia Characidae lip extension Pisces Salminus morphological adaptation Argentina Scarabotti, Pablo A. Parma, María Julieta López, Javier Alejandro Ghirardi, Romina Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
topic_facet	Ciencias Naturales Biología floodplain pond Actinopterygii hypoxia Characidae lip extension Pisces Salminus morphological adaptation Argentina
description	Some South American freshwater fishes can improve their capability of aquatic surface respiration (ASR) by developing dermal lip protuberances in the lower jaw. This adaptation was thought to be limited to omnivorous or herbivorous fishes. The present work provides the first evidence that juveniles of a piscivorous characid, Salminus brasiliensis, develop dermal lip protuberances during periods of hypoxia in floodplain ponds of the Salado River, in Argentina. The protuberance of S. brasiliensis involves dermal portions of both jaws exhibiting lateral lobes on the sides of the mouth arranged in the vertical plane. Water dissolved oxygen concentrations less than or equal to 1.05 mgl -1 were associated with a remarkable increase in lip protuberance. The lateral lobes of the protuberance in this species may limit the access of water to the anterior portion of the mouth which is positioned nearer to the oxygenated surface water during ASR. Finally, ASR, complemented with the development of dermal lip protuberances, can be considered a valuable strategy to survive in hypoxic environments, even for carnivorous fishes with elevated oxygen requirements.
format	Articulo Articulo
author	Scarabotti, Pablo A. Parma, María Julieta López, Javier Alejandro Ghirardi, Romina
author_facet	Scarabotti, Pablo A. Parma, María Julieta López, Javier Alejandro Ghirardi, Romina
author_sort	Scarabotti, Pablo A.
title	Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
title_short	Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
title_full	Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
title_fullStr	Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
title_full_unstemmed	Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
title_sort	dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid salminus brasiliensis (actinopterygii: characidae)
publishDate	2009
url	http://sedici.unlp.edu.ar/handle/10915/35153 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300013&lng=en&nrm=iso&tlng=en
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bdutipo_str	Repositorios
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Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)

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