Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals
American martens and white-tailed prairie dogs are mammals of similar body mass, exposed to periods of food deprivation, but of vastly different body fat content. While both species demonstrated a protein conservation phase during a short-term fast, martens had a greater reliance on protein as depic...
Published in: | Physiological Zoology |
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Language: | English |
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University of Wyoming. Libraries
1991
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Online Access: | https://hdl.handle.net/20.500.11919/2947 https://doi.org/10.1086/physzool.64.5.30156244 |
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ftmountainschol:oai:mountainscholar.org:20.500.11919/2947 2023-05-15T17:10:24+02:00 Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals Harlow, Henry Buskirk, Steven 1991-09-01 application/pdf https://hdl.handle.net/20.500.11919/2947 https://doi.org/10.1086/physzool.64.5.30156244 English eng eng University of Wyoming. Libraries Faculty Publication - Zoology and Physiology https://hdl.handle.net/20.500.11919/2947 doi:10.1086/physzool.64.5.30156244 Zoology Faculty Publications Zoology Journal contribution 1991 ftmountainschol https://doi.org/20.500.11919/2947 https://doi.org/10.1086/physzool.64.5.30156244 2022-03-07T20:51:05Z American martens and white-tailed prairie dogs are mammals of similar body mass, exposed to periods of food deprivation, but of vastly different body fat content. While both species demonstrated a protein conservation phase during a short-term fast, martens had a greater reliance on protein as depicted by greater loss of body weight, higher daily urine volume, and glomerular clearance rates, as well as higher daily urinary urea excretion. Protein use was calculated to be 3.15 and 1.23 g/d for martens and prairie dogs, respectively. Martens did not hydrolyze a greater amount of urea as they were hypothesized to do in order to conserve water. Urinary beta-hydroxybutyrate (BHBA) excretion decreased during the fast in both species but prairie dogs had higher plasma levels of BHBA, which suggests that regulation of protein catabolism may be in part from ketone bodies. By using fat and protein in a ratio of about 2:1, martens may maintain sufficient hydration, extend their fat stores, and retain muscle integrity during short-term fasts. Other Non-Article Part of Journal/Newspaper Martes americana Mountain Scholar (Digital Collections of Colorado and Wyoming) Physiological Zoology 64 5 1262 1278 |
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Open Polar |
collection |
Mountain Scholar (Digital Collections of Colorado and Wyoming) |
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ftmountainschol |
language |
English |
topic |
Zoology |
spellingShingle |
Zoology Harlow, Henry Buskirk, Steven Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals |
topic_facet |
Zoology |
description |
American martens and white-tailed prairie dogs are mammals of similar body mass, exposed to periods of food deprivation, but of vastly different body fat content. While both species demonstrated a protein conservation phase during a short-term fast, martens had a greater reliance on protein as depicted by greater loss of body weight, higher daily urine volume, and glomerular clearance rates, as well as higher daily urinary urea excretion. Protein use was calculated to be 3.15 and 1.23 g/d for martens and prairie dogs, respectively. Martens did not hydrolyze a greater amount of urea as they were hypothesized to do in order to conserve water. Urinary beta-hydroxybutyrate (BHBA) excretion decreased during the fast in both species but prairie dogs had higher plasma levels of BHBA, which suggests that regulation of protein catabolism may be in part from ketone bodies. By using fat and protein in a ratio of about 2:1, martens may maintain sufficient hydration, extend their fat stores, and retain muscle integrity during short-term fasts. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Harlow, Henry Buskirk, Steven |
author_facet |
Harlow, Henry Buskirk, Steven |
author_sort |
Harlow, Henry |
title |
Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals |
title_short |
Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals |
title_full |
Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals |
title_fullStr |
Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals |
title_full_unstemmed |
Comparative Plasma and Urine Chemistry of Fasting White-Tailed Prairie Dogs (Cynomys-Leucurus) and American Martens (Martes-Americana): Representative Fat-Bodied and Lean-Bodied Animals |
title_sort |
comparative plasma and urine chemistry of fasting white-tailed prairie dogs (cynomys-leucurus) and american martens (martes-americana): representative fat-bodied and lean-bodied animals |
publisher |
University of Wyoming. Libraries |
publishDate |
1991 |
url |
https://hdl.handle.net/20.500.11919/2947 https://doi.org/10.1086/physzool.64.5.30156244 |
genre |
Martes americana |
genre_facet |
Martes americana |
op_source |
Zoology Faculty Publications |
op_relation |
Faculty Publication - Zoology and Physiology https://hdl.handle.net/20.500.11919/2947 doi:10.1086/physzool.64.5.30156244 |
op_doi |
https://doi.org/20.500.11919/2947 https://doi.org/10.1086/physzool.64.5.30156244 |
container_title |
Physiological Zoology |
container_volume |
64 |
container_issue |
5 |
container_start_page |
1262 |
op_container_end_page |
1278 |
_version_ |
1766066989749501952 |