Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge )
Dietary salt intake in domestic fowl affects epithelial transport and morphology of the lower intestine (colon and coprodeum). This study investigated lower intestinal morphology and transport activity in two wild bird species with natural diets containing either low or high salt. Tissues from rock...
Published in: | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2015
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Online Access: | https://curis.ku.dk/portal/da/publications/transport-characteristics-and-morphology-of-the-colon-and-coprodeum-in-two-wild-birds-of-different-habitats-the-rock-ptarmigan-lagopus-mutus-and-the-common-murre-uria-aalge(174de6aa-43c4-4214-970f-08cb20e28bf9).html https://doi.org/10.1016/j.cbpa.2015.03.017 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/174de6aa-43c4-4214-970f-08cb20e28bf9 2024-05-12T08:02:31+00:00 Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) Árnason, Sighvatur S Elbrønd (Bibs), Vibeke Sødring Laverty, Gary 2015-09 https://curis.ku.dk/portal/da/publications/transport-characteristics-and-morphology-of-the-colon-and-coprodeum-in-two-wild-birds-of-different-habitats-the-rock-ptarmigan-lagopus-mutus-and-the-common-murre-uria-aalge(174de6aa-43c4-4214-970f-08cb20e28bf9).html https://doi.org/10.1016/j.cbpa.2015.03.017 eng eng info:eu-repo/semantics/restrictedAccess Árnason , S S , Elbrønd (Bibs) , V S & Laverty , G 2015 , ' Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) ' , Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology , vol. 187 , pp. 86-96 . https://doi.org/10.1016/j.cbpa.2015.03.017 Animals Birds Colon Ecosystem Species Specificity article 2015 ftcopenhagenunip https://doi.org/10.1016/j.cbpa.2015.03.017 2024-04-18T00:28:13Z Dietary salt intake in domestic fowl affects epithelial transport and morphology of the lower intestine (colon and coprodeum). This study investigated lower intestinal morphology and transport activity in two wild bird species with natural diets containing either low or high salt. Tissues from rock ptarmigan (Lagopus mutus) and common murres (Uria aalge) were sampled for histology and electrophysiological analyses. The ptarmigan exists on a low salt diet, while the murre lives on a high protein and high salt diet. The ptarmigan colon and coprodeum had villi/folds and crypts and the epithelium contained absorptive epithelial cells, mitochondria-rich cells and goblet cells. The colon had significant amiloride-inhibitable Isc, 5-15 μA/cm(2), with no glucose-stimulated Isc, and no significant phloridzin inhibition. The coprodeum also had high amiloride-inhibitable Isc. This transport pattern corresponded to that of chickens on low-salt diets. However, the ptarmigan colon also had a significant lysine/leucine-stimulated Isc of 3±1.0 μA/cm(2). The short U. aalge colon was similar to that of ptarmigans, but with no villi. It demonstrated a significant lysine/leucine-stimulated Isc (11±3.5 μA/cm(2)) with no amiloride-inhibitable Isc, similar to the high-salt chicken colon, but with no Na(+)-glucose cotransport. The murre coprodeum was inert to all substances and showed high resistance (1000 Ω·cm(2)), with a multilayered squamous epithelium. Despite some variations possibly associated with dietary protein intake, we conclude that natural high and low salt diets in different avian species are associated with different lower intestinal transport patterns, providing for post-renal adjustments in ion and water excretion. Article in Journal/Newspaper Common Murre Lagopus mutus rock ptarmigan Uria aalge uria University of Copenhagen: Research Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 187 86 96 |
institution |
Open Polar |
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University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Animals Birds Colon Ecosystem Species Specificity |
spellingShingle |
Animals Birds Colon Ecosystem Species Specificity Árnason, Sighvatur S Elbrønd (Bibs), Vibeke Sødring Laverty, Gary Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) |
topic_facet |
Animals Birds Colon Ecosystem Species Specificity |
description |
Dietary salt intake in domestic fowl affects epithelial transport and morphology of the lower intestine (colon and coprodeum). This study investigated lower intestinal morphology and transport activity in two wild bird species with natural diets containing either low or high salt. Tissues from rock ptarmigan (Lagopus mutus) and common murres (Uria aalge) were sampled for histology and electrophysiological analyses. The ptarmigan exists on a low salt diet, while the murre lives on a high protein and high salt diet. The ptarmigan colon and coprodeum had villi/folds and crypts and the epithelium contained absorptive epithelial cells, mitochondria-rich cells and goblet cells. The colon had significant amiloride-inhibitable Isc, 5-15 μA/cm(2), with no glucose-stimulated Isc, and no significant phloridzin inhibition. The coprodeum also had high amiloride-inhibitable Isc. This transport pattern corresponded to that of chickens on low-salt diets. However, the ptarmigan colon also had a significant lysine/leucine-stimulated Isc of 3±1.0 μA/cm(2). The short U. aalge colon was similar to that of ptarmigans, but with no villi. It demonstrated a significant lysine/leucine-stimulated Isc (11±3.5 μA/cm(2)) with no amiloride-inhibitable Isc, similar to the high-salt chicken colon, but with no Na(+)-glucose cotransport. The murre coprodeum was inert to all substances and showed high resistance (1000 Ω·cm(2)), with a multilayered squamous epithelium. Despite some variations possibly associated with dietary protein intake, we conclude that natural high and low salt diets in different avian species are associated with different lower intestinal transport patterns, providing for post-renal adjustments in ion and water excretion. |
format |
Article in Journal/Newspaper |
author |
Árnason, Sighvatur S Elbrønd (Bibs), Vibeke Sødring Laverty, Gary |
author_facet |
Árnason, Sighvatur S Elbrønd (Bibs), Vibeke Sødring Laverty, Gary |
author_sort |
Árnason, Sighvatur S |
title |
Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) |
title_short |
Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) |
title_full |
Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) |
title_fullStr |
Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) |
title_full_unstemmed |
Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) |
title_sort |
transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( lagopus mutus ) and the common murre ( uria aalge ) |
publishDate |
2015 |
url |
https://curis.ku.dk/portal/da/publications/transport-characteristics-and-morphology-of-the-colon-and-coprodeum-in-two-wild-birds-of-different-habitats-the-rock-ptarmigan-lagopus-mutus-and-the-common-murre-uria-aalge(174de6aa-43c4-4214-970f-08cb20e28bf9).html https://doi.org/10.1016/j.cbpa.2015.03.017 |
genre |
Common Murre Lagopus mutus rock ptarmigan Uria aalge uria |
genre_facet |
Common Murre Lagopus mutus rock ptarmigan Uria aalge uria |
op_source |
Árnason , S S , Elbrønd (Bibs) , V S & Laverty , G 2015 , ' Transport characteristics and morphology of the colon and coprodeum in two wild birds of different habitats, the rock ptarmigan ( Lagopus mutus ) and the common murre ( Uria aalge ) ' , Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology , vol. 187 , pp. 86-96 . https://doi.org/10.1016/j.cbpa.2015.03.017 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.cbpa.2015.03.017 |
container_title |
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
container_volume |
187 |
container_start_page |
86 |
op_container_end_page |
96 |
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1798844618272407552 |