Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae

It has been postulated that both digestive capacity and intestinal biochemical features are correlated to dietary habits in birds. Therefore, it would be expected to find biochemical constraint to hydrolyze sugars in those species, which predate exclusively on marine invertebrates. In vitro intestin...

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Autor principal:	SABAT,PABLO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2000
Materias:	digestion dietary adaptation disaccharidases aminopeptidase-N Cinclodes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000200009
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id	oai:scielo:S0716-078X2000000200009
record_format	dspace
spelling	oai:scielo:S0716-078X20000002000092001-07-24Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: FurnaridaeSABAT,PABLO digestion dietary adaptation disaccharidases aminopeptidase-N Cinclodes It has been postulated that both digestive capacity and intestinal biochemical features are correlated to dietary habits in birds. Therefore, it would be expected to find biochemical constraint to hydrolyze sugars in those species, which predate exclusively on marine invertebrates. In vitro intestinal activities of these enzymes were studied in Cinclodes nigrofumosus (d' Orbigny) and Cinclodes patagonicus (Gmelling). Due to differences in dietary habits between species I predicted the lack of sucrase activity in C. nigrofumosus but not in C. patagonicus. Also, low activities of maltase would be expected in both species. On the other hand due to the considerable amount of proteins and trehalose present in preys, high activities of both trehalase and aminopeptidase-N were also expected. Contrary to previous reports in birds, significant activity of trehalase was found. Also lack of sucrase and small amounts of maltase were observed as well as a significant aminopeptidase-N activity in both species. Although the digestive enzyme activities of C. nigrofumosus and C. patagonicus appear to be correlated with their natural diet, the similarities between species in all enzymes activities suggest an strong effect of phylogenetic inertiainfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.73 n.2 20002000-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000200009en10.4067/S0716-078X2000000200009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	digestion dietary adaptation disaccharidases aminopeptidase-N Cinclodes
spellingShingle	digestion dietary adaptation disaccharidases aminopeptidase-N Cinclodes SABAT,PABLO Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae
description	It has been postulated that both digestive capacity and intestinal biochemical features are correlated to dietary habits in birds. Therefore, it would be expected to find biochemical constraint to hydrolyze sugars in those species, which predate exclusively on marine invertebrates. In vitro intestinal activities of these enzymes were studied in Cinclodes nigrofumosus (d' Orbigny) and Cinclodes patagonicus (Gmelling). Due to differences in dietary habits between species I predicted the lack of sucrase activity in C. nigrofumosus but not in C. patagonicus. Also, low activities of maltase would be expected in both species. On the other hand due to the considerable amount of proteins and trehalose present in preys, high activities of both trehalase and aminopeptidase-N were also expected. Contrary to previous reports in birds, significant activity of trehalase was found. Also lack of sucrase and small amounts of maltase were observed as well as a significant aminopeptidase-N activity in both species. Although the digestive enzyme activities of C. nigrofumosus and C. patagonicus appear to be correlated with their natural diet, the similarities between species in all enzymes activities suggest an strong effect of phylogenetic inertia
author	SABAT,PABLO
author_facet	SABAT,PABLO
author_sort	SABAT,PABLO
title	Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae
title_short	Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae
title_full	Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae
title_fullStr	Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae
title_full_unstemmed	Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae
title_sort	intestinal disaccharidases and aminopeptidase-n in two species of cinclodes (passerine: furnaridae
publisher	Sociedad de Biología de Chile
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000200009
work_keys_str_mv	AT sabatpablo intestinaldisaccharidasesandaminopeptidasenintwospeciesofcinclodespasserinefurnaridae
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Intestinal Disaccharidases and Aminopeptidase-N in two species of Cinclodes (Passerine: Furnaridae

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