On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily

It has been hypothesized that species belonging to the Sturnidae-Muscicapidae lineage, despite having generalist diets comprising fruits with sugars of diverse kinds, do not express intestinal sucrase. In order to increase the taxonomical range of species for which sucrase intestinal activity has be...

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Autores principales:	GATICA,CAROLINA D. L., GONZÁLEZ,SANDRA P, VASQUEZ,RODRIGO A, SABAT,PABLO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2006
Materias:	intestinal hydrolases Mimus thenca physiological constraint sucrase activity sugar preferences Turdus falcklandii
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000300001
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spelling	oai:scielo:S0716-078X20060003000012006-10-03On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamilyGATICA,CAROLINA D. L.GONZÁLEZ,SANDRA PVASQUEZ,RODRIGO ASABAT,PABLO intestinal hydrolases Mimus thenca physiological constraint sucrase activity sugar preferences Turdus falcklandii It has been hypothesized that species belonging to the Sturnidae-Muscicapidae lineage, despite having generalist diets comprising fruits with sugars of diverse kinds, do not express intestinal sucrase. In order to increase the taxonomical range of species for which sucrase intestinal activity has been investigated, we analyzed the relationship between enzymatic activity (sugar digestion) and feeding preference for native fruits containing sucrose, in two South American members of the superfamily Muscicapoidea, the Austral thrush (Turdus falcklandii) and the Chilean mockingbird (Mimus thenca). We hypothesized that these birds would lack intestinal sucrase activity and that in preference tests they would reject sucrose solutions. Both thrushes and mockingbirds lacked significant intestinal sucrase activity. Considering the phylogenetic constraint hypothesis for sucrose digestion in the Muscicapoidea superfamily, our results support the notion that lack of sucrase activity is a shared derived-character only for the Cinclidae-Sturnidae-Turdinae lineage, and suggests that the selective pressure that these birds can exert on the plants whose seeds they disperse and whose flowers they visit are consistent across world hemispheres. Food preference by thrushes was significantly biased toward glucose and fructose, showing scant to nil consumption of sucrose, thus corroborating a positive relationship between digestion capabilities and food preference for different sugar typesinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.79 n.3 20062006-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000300001en10.4067/S0716-078X2006000300001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	intestinal hydrolases Mimus thenca physiological constraint sucrase activity sugar preferences Turdus falcklandii
spellingShingle	intestinal hydrolases Mimus thenca physiological constraint sucrase activity sugar preferences Turdus falcklandii GATICA,CAROLINA D. L. GONZÁLEZ,SANDRA P VASQUEZ,RODRIGO A SABAT,PABLO On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily
description	It has been hypothesized that species belonging to the Sturnidae-Muscicapidae lineage, despite having generalist diets comprising fruits with sugars of diverse kinds, do not express intestinal sucrase. In order to increase the taxonomical range of species for which sucrase intestinal activity has been investigated, we analyzed the relationship between enzymatic activity (sugar digestion) and feeding preference for native fruits containing sucrose, in two South American members of the superfamily Muscicapoidea, the Austral thrush (Turdus falcklandii) and the Chilean mockingbird (Mimus thenca). We hypothesized that these birds would lack intestinal sucrase activity and that in preference tests they would reject sucrose solutions. Both thrushes and mockingbirds lacked significant intestinal sucrase activity. Considering the phylogenetic constraint hypothesis for sucrose digestion in the Muscicapoidea superfamily, our results support the notion that lack of sucrase activity is a shared derived-character only for the Cinclidae-Sturnidae-Turdinae lineage, and suggests that the selective pressure that these birds can exert on the plants whose seeds they disperse and whose flowers they visit are consistent across world hemispheres. Food preference by thrushes was significantly biased toward glucose and fructose, showing scant to nil consumption of sucrose, thus corroborating a positive relationship between digestion capabilities and food preference for different sugar types
author	GATICA,CAROLINA D. L. GONZÁLEZ,SANDRA P VASQUEZ,RODRIGO A SABAT,PABLO
author_facet	GATICA,CAROLINA D. L. GONZÁLEZ,SANDRA P VASQUEZ,RODRIGO A SABAT,PABLO
author_sort	GATICA,CAROLINA D. L.
title	On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily
title_short	On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily
title_full	On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily
title_fullStr	On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily
title_full_unstemmed	On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily
title_sort	on the relationship between sugar digestion and diet preference in two chilean avian species belonging to the muscicapoidea superfamily
publisher	Sociedad de Biología de Chile
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000300001
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On the relationship between sugar digestion and diet preference in two Chilean avian species belonging to the Muscicapoidea superfamily

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