Cell size and basal metabolic rate in hummingbirds

Nucleotypic theory suggests that genome size play indirect roles in determining organismal fitness. Among endotherms this theory has been demonstrated by an inverse correlation between basal metabolic rate (BMR) and genome size. Nonetheless, accumulation of variables, especially for some key groups...

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Autores principales:	Opazo,Juan C., Soto-Gamboa,Mauricio, Fernández,Maria José
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2005
Materias:	hummingbirds nucleotypic theory basal metabolic rate mean corpuscular volume
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200010
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spelling	oai:scielo:S0716-078X20050002000102014-08-12Cell size and basal metabolic rate in hummingbirdsOpazo,Juan C.Soto-Gamboa,MauricioFernández,Maria José hummingbirds nucleotypic theory basal metabolic rate mean corpuscular volume Nucleotypic theory suggests that genome size play indirect roles in determining organismal fitness. Among endotherms this theory has been demonstrated by an inverse correlation between basal metabolic rate (BMR) and genome size. Nonetheless, accumulation of variables, especially for some key groups of endotherms, involved in C-value enigma (e.g., cell size) will fortify this theory. In this sense, hummingbird species are of particular interest because they are an energetic extreme in avian and endotherm evolution. Knowing that cell size is proportional to C-value, in this study we tested for a relationship between mean corpuscular volume of red blood cells and BMR in four species of hummingbirds ranging from 4 to 20 g. In comparison with other birds, our hummingbird data show higher BMR and the smallest mean corpuscular volumes, thereby providing further support for the nucleotypic theoryinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.78 n.2 20052005-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200010en10.4067/S0716-078X2005000200010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	hummingbirds nucleotypic theory basal metabolic rate mean corpuscular volume
spellingShingle	hummingbirds nucleotypic theory basal metabolic rate mean corpuscular volume Opazo,Juan C. Soto-Gamboa,Mauricio Fernández,Maria José Cell size and basal metabolic rate in hummingbirds
description	Nucleotypic theory suggests that genome size play indirect roles in determining organismal fitness. Among endotherms this theory has been demonstrated by an inverse correlation between basal metabolic rate (BMR) and genome size. Nonetheless, accumulation of variables, especially for some key groups of endotherms, involved in C-value enigma (e.g., cell size) will fortify this theory. In this sense, hummingbird species are of particular interest because they are an energetic extreme in avian and endotherm evolution. Knowing that cell size is proportional to C-value, in this study we tested for a relationship between mean corpuscular volume of red blood cells and BMR in four species of hummingbirds ranging from 4 to 20 g. In comparison with other birds, our hummingbird data show higher BMR and the smallest mean corpuscular volumes, thereby providing further support for the nucleotypic theory
author	Opazo,Juan C. Soto-Gamboa,Mauricio Fernández,Maria José
author_facet	Opazo,Juan C. Soto-Gamboa,Mauricio Fernández,Maria José
author_sort	Opazo,Juan C.
title	Cell size and basal metabolic rate in hummingbirds
title_short	Cell size and basal metabolic rate in hummingbirds
title_full	Cell size and basal metabolic rate in hummingbirds
title_fullStr	Cell size and basal metabolic rate in hummingbirds
title_full_unstemmed	Cell size and basal metabolic rate in hummingbirds
title_sort	cell size and basal metabolic rate in hummingbirds
publisher	Sociedad de Biología de Chile
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200010
work_keys_str_mv	AT opazojuanc cellsizeandbasalmetabolicrateinhummingbirds AT sotogamboamauricio cellsizeandbasalmetabolicrateinhummingbirds AT fernandezmariajose cellsizeandbasalmetabolicrateinhummingbirds
_version_	1718439574227648512

Cell size and basal metabolic rate in hummingbirds

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