Are levels of digestive enzyme activity related to the natural diet in passerine birds?

Digestive capabilities, such as the rates nutrient hydrolysis and absorption, may affect energy intake and ultimately feeding behavior. In birds, a high diversity in gut biochemical capabilities seems to support the existence of a correlation between the morphology and physiology of the intestinal t...

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Autores principales:	Ramírez-Otárola,Natalia, Sabat,Pablo
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2011
Materias:	birds diet intestinal enzymes Passeriformes food habits adaptation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000100011
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spelling	oai:scielo:S0716-976020110001000112011-09-01Are levels of digestive enzyme activity related to the natural diet in passerine birds?Ramírez-Otárola,NataliaSabat,Pablo birds diet intestinal enzymes Passeriformes food habits adaptation Digestive capabilities, such as the rates nutrient hydrolysis and absorption, may affect energy intake and ultimately feeding behavior. In birds, a high diversity in gut biochemical capabilities seems to support the existence of a correlation between the morphology and physiology of the intestinal tract and chemical features of the natural diet. However, studies correlating the activity of digestive enzymes and the feeding habits at an evolutionary scale are scarce. We investigated the effect of dietary habits on the digestive physiological characteristics of eight species of passerine birds from Central Chile. The Order Passeriformes is a speciose group with a broad dietary spectrum that includes omnivorous, granivorous and insectivorous species. We measured the activity of three enzymes: maltase, sucrase and aminopeptidase-N. Using an autocorrelation analysis to remove the phylogenetic effect, we found that dietary habits had no effect on enzymatic activity. However, we found that granivorous and omnivorous species had higher levels of disaccharidase activities and insectivores had the lowest. The major difference in enzymatic activity found at the inter-specific level, compared to the reported lower magnitude of enzyme modulation owing to dietary acclimation, suggests that these differences to some extent have a genetic basis. However, the lack of a clear association between diet categories and gut physiology suggested us that dietary categorizations do not always reflect the chemical composition of the ingested food.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.44 n.1 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000100011en10.4067/S0716-97602011000100011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	birds diet intestinal enzymes Passeriformes food habits adaptation
spellingShingle	birds diet intestinal enzymes Passeriformes food habits adaptation Ramírez-Otárola,Natalia Sabat,Pablo Are levels of digestive enzyme activity related to the natural diet in passerine birds?
description	Digestive capabilities, such as the rates nutrient hydrolysis and absorption, may affect energy intake and ultimately feeding behavior. In birds, a high diversity in gut biochemical capabilities seems to support the existence of a correlation between the morphology and physiology of the intestinal tract and chemical features of the natural diet. However, studies correlating the activity of digestive enzymes and the feeding habits at an evolutionary scale are scarce. We investigated the effect of dietary habits on the digestive physiological characteristics of eight species of passerine birds from Central Chile. The Order Passeriformes is a speciose group with a broad dietary spectrum that includes omnivorous, granivorous and insectivorous species. We measured the activity of three enzymes: maltase, sucrase and aminopeptidase-N. Using an autocorrelation analysis to remove the phylogenetic effect, we found that dietary habits had no effect on enzymatic activity. However, we found that granivorous and omnivorous species had higher levels of disaccharidase activities and insectivores had the lowest. The major difference in enzymatic activity found at the inter-specific level, compared to the reported lower magnitude of enzyme modulation owing to dietary acclimation, suggests that these differences to some extent have a genetic basis. However, the lack of a clear association between diet categories and gut physiology suggested us that dietary categorizations do not always reflect the chemical composition of the ingested food.
author	Ramírez-Otárola,Natalia Sabat,Pablo
author_facet	Ramírez-Otárola,Natalia Sabat,Pablo
author_sort	Ramírez-Otárola,Natalia
title	Are levels of digestive enzyme activity related to the natural diet in passerine birds?
title_short	Are levels of digestive enzyme activity related to the natural diet in passerine birds?
title_full	Are levels of digestive enzyme activity related to the natural diet in passerine birds?
title_fullStr	Are levels of digestive enzyme activity related to the natural diet in passerine birds?
title_full_unstemmed	Are levels of digestive enzyme activity related to the natural diet in passerine birds?
title_sort	are levels of digestive enzyme activity related to the natural diet in passerine birds?
publisher	Sociedad de Biología de Chile
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000100011
work_keys_str_mv	AT ramirezotarolanatalia arelevelsofdigestiveenzymeactivityrelatedtothenaturaldietinpasserinebirds AT sabatpablo arelevelsofdigestiveenzymeactivityrelatedtothenaturaldietinpasserinebirds
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Are levels of digestive enzyme activity related to the natural diet in passerine birds?

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