Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems

Birds living in desert environments have been the preferred models for the study of physiological adaptations to water scarcity. Passerine birds living in marine coastal habitats face similar problems, yet physiological adaptations to water conservation in such species have been poorly documented. W...

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Autores principales:	SABAT,PABLO, NESPOLO,ROBERTO F, BOZINOVIC,FRANCISCO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2004
Materias:	evaporative water loss Cinclodes osmoregulation passerines salt
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000200001
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spelling	oai:scielo:S0716-078X20040002000012004-09-20Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystemsSABAT,PABLONESPOLO,ROBERTO FBOZINOVIC,FRANCISCO evaporative water loss Cinclodes osmoregulation passerines salt Birds living in desert environments have been the preferred models for the study of physiological adaptations to water scarcity. Passerine birds living in marine coastal habitats face similar problems, yet physiological adaptations to water conservation in such species have been poorly documented. We measured total evaporative water loss (TEWL) and rates of oxygen consumption (VO2) in three species of passerine birds dwelling in marine and fresh water habitats. Mass specific total evaporative water loss was significantly lower in the marine species, Cinclodes nigrofumosus, than in species inhabiting areas near freshwater sources. We found a positive relationship between TEWL and VO2. The ratio of TEWL to VO2 (relative evaporative water loss, RTEWL) showed significant variation among Cinclodes species, and was highest for the fresh-water living species, C. oustaleti and C. fuscus. The variation in TEWL found in Cinclodes is likely a consequence of differential exploitation of marine prey with high osmotic loads, which, in turn, may impose the need for water conservationinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.77 n.2 20042004-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000200001en10.4067/S0716-078X2004000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	evaporative water loss Cinclodes osmoregulation passerines salt
spellingShingle	evaporative water loss Cinclodes osmoregulation passerines salt SABAT,PABLO NESPOLO,ROBERTO F BOZINOVIC,FRANCISCO Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems
description	Birds living in desert environments have been the preferred models for the study of physiological adaptations to water scarcity. Passerine birds living in marine coastal habitats face similar problems, yet physiological adaptations to water conservation in such species have been poorly documented. We measured total evaporative water loss (TEWL) and rates of oxygen consumption (VO2) in three species of passerine birds dwelling in marine and fresh water habitats. Mass specific total evaporative water loss was significantly lower in the marine species, Cinclodes nigrofumosus, than in species inhabiting areas near freshwater sources. We found a positive relationship between TEWL and VO2. The ratio of TEWL to VO2 (relative evaporative water loss, RTEWL) showed significant variation among Cinclodes species, and was highest for the fresh-water living species, C. oustaleti and C. fuscus. The variation in TEWL found in Cinclodes is likely a consequence of differential exploitation of marine prey with high osmotic loads, which, in turn, may impose the need for water conservation
author	SABAT,PABLO NESPOLO,ROBERTO F BOZINOVIC,FRANCISCO
author_facet	SABAT,PABLO NESPOLO,ROBERTO F BOZINOVIC,FRANCISCO
author_sort	SABAT,PABLO
title	Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems
title_short	Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems
title_full	Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems
title_fullStr	Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems
title_full_unstemmed	Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems
title_sort	water economy of three cinclodes (furnariidae) species inhabiting marine and freshwater ecosystems
publisher	Sociedad de Biología de Chile
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000200001
work_keys_str_mv	AT sabatpablo watereconomyofthreecinclodesfurnariidaespeciesinhabitingmarineandfreshwaterecosystems AT nespolorobertof watereconomyofthreecinclodesfurnariidaespeciesinhabitingmarineandfreshwaterecosystems AT bozinovicfrancisco watereconomyofthreecinclodesfurnariidaespeciesinhabitingmarineandfreshwaterecosystems
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Water economy of three Cinclodes (Furnariidae) species inhabiting marine and freshwater ecosystems

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