Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf
Northern ungulates undergo pregnancy in winter when food supplies are low. Consequently, females employ a capital breeding strategy that relies upon maternal body stores of energy and protein for fetal growth. We studied captive female reindeer (Rangifer tarandus tarandus; n = 6; 118 kg), caribou (R...
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ftfrontimediafig:oai:figshare.com:article/12382067 2023-05-15T15:19:12+02:00 Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf Perry S. Barboza Rachel D. Shively Dave D. Gustine J. A. Addison 2020-05-28T04:36:06Z https://doi.org/10.3389/fevo.2020.00150.s001 https://figshare.com/articles/Table_1_Winter_Is_Coming_Conserving_Body_Protein_in_Female_Reindeer_Caribou_and_Muskoxen_pdf/12382067 unknown doi:10.3389/fevo.2020.00150.s001 https://figshare.com/articles/Table_1_Winter_Is_Coming_Conserving_Body_Protein_in_Female_Reindeer_Caribou_and_Muskoxen_pdf/12382067 CC BY 4.0 CC-BY Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology arctic herbivore protein stable isotopes ungulate Dataset 2020 ftfrontimediafig https://doi.org/10.3389/fevo.2020.00150.s001 2020-06-03T22:55:15Z Northern ungulates undergo pregnancy in winter when food supplies are low. Consequently, females employ a capital breeding strategy that relies upon maternal body stores of energy and protein for fetal growth. We studied captive female reindeer (Rangifer tarandus tarandus; n = 6; 118 kg), caribou (Rangifer tarandus granti; n = 6; 97 kg), and muskoxen (Ovibos moschatus; n = 8; 205 kg) in late winter (February to April) to track body protein use in late pregnancy when feeding is often interrupted by snow storms and when wild animals begin movements to spring and summer ranges where they give birth. We used high and low protein rations (14–16 and 8% protein) as complete diets for Rangifer and high protein ration as a supplement (500 g/day) to hay (7.3% protein; δ 15 N = 1.1‰) for Ovibos. Animals were fasted for 2 days to evaluate isotopic responses to an acute deficit of energy and protein on each diet in a sequence from δ 15 N 1.6‰, to 6.9‰ to 3.2‰ over 58 days. Dietary shifts in δ 15 N were reflected in plant fibers in the feces (fecal fiber) but not in blood cells (Rangifer 6.5 ± 0.3‰; Ovibos 5.2 ± 0.1‰). Serum proteins were higher in δ 15 N than blood cells whereas serum amino acids were lower in δ 15 N than blood cells and more responsive to changes in dietary δ 15 N indicated by fecal fiber. Fasting did not affect δ 15 N of serum proteins or serum amino acids. Values for δ 15 N in urea were strongly affected by both shifts in diet and by fasting, which indicated that excretory urea N was derived from cellular proteins and isotopically heavy proteins released from organs into the serum. Inter-organ exchanges of transport proteins may minimize oxidation of stored amino acids and conserve body protein stores for fetal growth and milk production in Rangifer and Ovibos. A capital breeding strategy in these long-lived, iteroparous herbivores relies upon routing of body proteins to simultaneously sustain maternal function and maternal investment through common metabolic pathways that conserve lean body mass for ... Dataset Arctic ovibos moschatus Rangifer tarandus Frontiers: Figshare Arctic |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology arctic herbivore protein stable isotopes ungulate |
spellingShingle |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology arctic herbivore protein stable isotopes ungulate Perry S. Barboza Rachel D. Shively Dave D. Gustine J. A. Addison Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf |
topic_facet |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology arctic herbivore protein stable isotopes ungulate |
description |
Northern ungulates undergo pregnancy in winter when food supplies are low. Consequently, females employ a capital breeding strategy that relies upon maternal body stores of energy and protein for fetal growth. We studied captive female reindeer (Rangifer tarandus tarandus; n = 6; 118 kg), caribou (Rangifer tarandus granti; n = 6; 97 kg), and muskoxen (Ovibos moschatus; n = 8; 205 kg) in late winter (February to April) to track body protein use in late pregnancy when feeding is often interrupted by snow storms and when wild animals begin movements to spring and summer ranges where they give birth. We used high and low protein rations (14–16 and 8% protein) as complete diets for Rangifer and high protein ration as a supplement (500 g/day) to hay (7.3% protein; δ 15 N = 1.1‰) for Ovibos. Animals were fasted for 2 days to evaluate isotopic responses to an acute deficit of energy and protein on each diet in a sequence from δ 15 N 1.6‰, to 6.9‰ to 3.2‰ over 58 days. Dietary shifts in δ 15 N were reflected in plant fibers in the feces (fecal fiber) but not in blood cells (Rangifer 6.5 ± 0.3‰; Ovibos 5.2 ± 0.1‰). Serum proteins were higher in δ 15 N than blood cells whereas serum amino acids were lower in δ 15 N than blood cells and more responsive to changes in dietary δ 15 N indicated by fecal fiber. Fasting did not affect δ 15 N of serum proteins or serum amino acids. Values for δ 15 N in urea were strongly affected by both shifts in diet and by fasting, which indicated that excretory urea N was derived from cellular proteins and isotopically heavy proteins released from organs into the serum. Inter-organ exchanges of transport proteins may minimize oxidation of stored amino acids and conserve body protein stores for fetal growth and milk production in Rangifer and Ovibos. A capital breeding strategy in these long-lived, iteroparous herbivores relies upon routing of body proteins to simultaneously sustain maternal function and maternal investment through common metabolic pathways that conserve lean body mass for ... |
format |
Dataset |
author |
Perry S. Barboza Rachel D. Shively Dave D. Gustine J. A. Addison |
author_facet |
Perry S. Barboza Rachel D. Shively Dave D. Gustine J. A. Addison |
author_sort |
Perry S. Barboza |
title |
Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf |
title_short |
Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf |
title_full |
Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf |
title_fullStr |
Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf |
title_full_unstemmed |
Table_1_Winter Is Coming: Conserving Body Protein in Female Reindeer, Caribou, and Muskoxen.pdf |
title_sort |
table_1_winter is coming: conserving body protein in female reindeer, caribou, and muskoxen.pdf |
publishDate |
2020 |
url |
https://doi.org/10.3389/fevo.2020.00150.s001 https://figshare.com/articles/Table_1_Winter_Is_Coming_Conserving_Body_Protein_in_Female_Reindeer_Caribou_and_Muskoxen_pdf/12382067 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ovibos moschatus Rangifer tarandus |
genre_facet |
Arctic ovibos moschatus Rangifer tarandus |
op_relation |
doi:10.3389/fevo.2020.00150.s001 https://figshare.com/articles/Table_1_Winter_Is_Coming_Conserving_Body_Protein_in_Female_Reindeer_Caribou_and_Muskoxen_pdf/12382067 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fevo.2020.00150.s001 |
_version_ |
1766349382059294720 |