Balancing the scales: Preliminary investigation of total energy expenditure and daily metabolizable energy intake in Matschie’s tree kangaroo (Dendrolagus matschiei)
Matschie's tree kangaroo (Dendrolagus matschiei) is an endangered arboreal marsupial native to Papua New Guinea. Detailed field studies of its behavior and ecology are scarce due largely to its occupation of remote cloud forests and cryptic nature. Although this species has been in human care s...
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| creator | Dunham, Noah T Koester, Diana C Dierenfeld, Ellen S Rimbach, Rebecca Pontzer, Herman |
| description | Matschie's tree kangaroo (Dendrolagus matschiei) is an endangered arboreal marsupial native to Papua New Guinea. Detailed field studies of its behavior and ecology are scarce due largely to its occupation of remote cloud forests and cryptic nature. Although this species has been in human care since the 1950s, much of its biology is still unknown. The current ex situ population is not sustainable due to health and reproductive problems, believed to stem largely from issues with diet and obesity. To better assess potential discrepancies between energy requirements and energy intake, we sought to 1) quantify total energy expenditure (TEE) of two zoo-housed Matschie's tree kangaroos (body mass = 9.0-9.7 kg) on a diet composed largely of leafy browse; 2) quantify food and macronutrient intake, apparent dry matter macronutrient digestibility, and metabolizable energy (ME) intake over a 14-month period; and 3) test for seasonal changes in ME intake due to seasonal differences in the varieties of leafy browse offered. Using the doubly labeled water method, we determined TEE for the female (288 kcal day .sup.-1) and male (411 kcal day .sup.-1). Resulting mean TEE was well below the expected value for marsupials and macropods (i.e., ~60% of the expected value based on body mass). The mean calculated ME intakes for the female and male were 307 kcal day.sup.-1 and 454 kcal day.sup.-1, respectively. There were significant seasonal differences in ME intakes, driven by reduced intake in the autumn. These results demonstrate that Matschie's tree kangaroos can be maintained at healthy body weights and conditions on fiber-rich and browse-heavy diets. Our findings contribute important insights into tree kangaroo energetics and physiology and can be applied to help reformulate the diet of Matschie's tree kangaroos at captive facilities to improve population health and sustainability. |
| doi_str_mv | 10.1371/journal.pone.0270570 |
| format | Article |
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Detailed field studies of its behavior and ecology are scarce due largely to its occupation of remote cloud forests and cryptic nature. Although this species has been in human care since the 1950s, much of its biology is still unknown. The current ex situ population is not sustainable due to health and reproductive problems, believed to stem largely from issues with diet and obesity. To better assess potential discrepancies between energy requirements and energy intake, we sought to 1) quantify total energy expenditure (TEE) of two zoo-housed Matschie's tree kangaroos (body mass = 9.0-9.7 kg) on a diet composed largely of leafy browse; 2) quantify food and macronutrient intake, apparent dry matter macronutrient digestibility, and metabolizable energy (ME) intake over a 14-month period; and 3) test for seasonal changes in ME intake due to seasonal differences in the varieties of leafy browse offered. Using the doubly labeled water method, we determined TEE for the female (288 kcal day .sup.-1) and male (411 kcal day .sup.-1). Resulting mean TEE was well below the expected value for marsupials and macropods (i.e., ~60% of the expected value based on body mass). The mean calculated ME intakes for the female and male were 307 kcal day.sup.-1 and 454 kcal day.sup.-1, respectively. There were significant seasonal differences in ME intakes, driven by reduced intake in the autumn. These results demonstrate that Matschie's tree kangaroos can be maintained at healthy body weights and conditions on fiber-rich and browse-heavy diets. Our findings contribute important insights into tree kangaroo energetics and physiology and can be applied to help reformulate the diet of Matschie's tree kangaroos at captive facilities to improve population health and sustainability.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0270570</identifier><identifier>PMID: 35759501</identifier><language>eng</language><publisher>San Francisco: Public Library of Science</publisher><subject>Analysis ; Aquariums ; Balances (scales) ; Biology and Life Sciences ; Body mass ; Body weight ; Cloud forests ; COVID-19 ; Dendrolagus ; Dendrolagus matschiei ; Diet ; Digestibility ; Dry matter ; Ecology ; Endangered plants ; Energy ; Energy expenditure ; Energy intake ; Energy requirements ; Females ; Food ; Food intake ; Males ; Marsupials ; Medicine and Health Sciences ; Metabolism ; Obesity ; Overweight ; Seasonal variations ; Sustainability ; Trees ; Weight control ; Zoo animals ; Zoos</subject><ispartof>PloS one, 2022-06, Vol.17 (6), p.e0270570-e0270570</ispartof><rights>COPYRIGHT 2022 Public Library of Science</rights><rights>2022 Dunham et al. 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Detailed field studies of its behavior and ecology are scarce due largely to its occupation of remote cloud forests and cryptic nature. Although this species has been in human care since the 1950s, much of its biology is still unknown. The current ex situ population is not sustainable due to health and reproductive problems, believed to stem largely from issues with diet and obesity. To better assess potential discrepancies between energy requirements and energy intake, we sought to 1) quantify total energy expenditure (TEE) of two zoo-housed Matschie's tree kangaroos (body mass = 9.0-9.7 kg) on a diet composed largely of leafy browse; 2) quantify food and macronutrient intake, apparent dry matter macronutrient digestibility, and metabolizable energy (ME) intake over a 14-month period; and 3) test for seasonal changes in ME intake due to seasonal differences in the varieties of leafy browse offered. 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Our findings contribute important insights into tree kangaroo energetics and physiology and can be applied to help reformulate the diet of Matschie's tree kangaroos at captive facilities to improve population health and sustainability.</description><subject>Analysis</subject><subject>Aquariums</subject><subject>Balances (scales)</subject><subject>Biology and Life Sciences</subject><subject>Body mass</subject><subject>Body weight</subject><subject>Cloud forests</subject><subject>COVID-19</subject><subject>Dendrolagus</subject><subject>Dendrolagus matschiei</subject><subject>Diet</subject><subject>Digestibility</subject><subject>Dry matter</subject><subject>Ecology</subject><subject>Endangered plants</subject><subject>Energy</subject><subject>Energy expenditure</subject><subject>Energy intake</subject><subject>Energy requirements</subject><subject>Females</subject><subject>Food</subject><subject>Food intake</subject><subject>Males</subject><subject>Marsupials</subject><subject>Medicine 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one</jtitle><date>2022-06-27</date><risdate>2022</risdate><volume>17</volume><issue>6</issue><spage>e0270570</spage><epage>e0270570</epage><pages>e0270570-e0270570</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Matschie's tree kangaroo (Dendrolagus matschiei) is an endangered arboreal marsupial native to Papua New Guinea. Detailed field studies of its behavior and ecology are scarce due largely to its occupation of remote cloud forests and cryptic nature. Although this species has been in human care since the 1950s, much of its biology is still unknown. The current ex situ population is not sustainable due to health and reproductive problems, believed to stem largely from issues with diet and obesity. To better assess potential discrepancies between energy requirements and energy intake, we sought to 1) quantify total energy expenditure (TEE) of two zoo-housed Matschie's tree kangaroos (body mass = 9.0-9.7 kg) on a diet composed largely of leafy browse; 2) quantify food and macronutrient intake, apparent dry matter macronutrient digestibility, and metabolizable energy (ME) intake over a 14-month period; and 3) test for seasonal changes in ME intake due to seasonal differences in the varieties of leafy browse offered. Using the doubly labeled water method, we determined TEE for the female (288 kcal day .sup.-1) and male (411 kcal day .sup.-1). Resulting mean TEE was well below the expected value for marsupials and macropods (i.e., ~60% of the expected value based on body mass). The mean calculated ME intakes for the female and male were 307 kcal day.sup.-1 and 454 kcal day.sup.-1, respectively. There were significant seasonal differences in ME intakes, driven by reduced intake in the autumn. These results demonstrate that Matschie's tree kangaroos can be maintained at healthy body weights and conditions on fiber-rich and browse-heavy diets. Our findings contribute important insights into tree kangaroo energetics and physiology and can be applied to help reformulate the diet of Matschie's tree kangaroos at captive facilities to improve population health and sustainability.</abstract><cop>San Francisco</cop><pub>Public Library of Science</pub><pmid>35759501</pmid><doi>10.1371/journal.pone.0270570</doi><tpages>e0270570</tpages><orcidid>https://orcid.org/0000-0003-0299-7281</orcidid><orcidid>https://orcid.org/0000-0001-7295-0740</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Analysis Aquariums Balances (scales) Biology and Life Sciences Body mass Body weight Cloud forests COVID-19 Dendrolagus Dendrolagus matschiei Diet Digestibility Dry matter Ecology Endangered plants Energy Energy expenditure Energy intake Energy requirements Females Food Food intake Males Marsupials Medicine and Health Sciences Metabolism Obesity Overweight Seasonal variations Sustainability Trees Weight control Zoo animals Zoos |
| title | Balancing the scales: Preliminary investigation of total energy expenditure and daily metabolizable energy intake in Matschie’s tree kangaroo (Dendrolagus matschiei) |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-08T11%3A05%3A46IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Balancing%20the%20scales:%20Preliminary%20investigation%20of%20total%20energy%20expenditure%20and%20daily%20metabolizable%20energy%20intake%20in%20Matschie%E2%80%99s%20tree%20kangaroo%20(Dendrolagus%20matschiei)&rft.jtitle=PloS%20one&rft.au=Dunham,%20Noah%20T&rft.date=2022-06-27&rft.volume=17&rft.issue=6&rft.spage=e0270570&rft.epage=e0270570&rft.pages=e0270570-e0270570&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0270570&rft_dat=%3Cgale_plos_%3EA708415848%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2687704657&rft_id=info:pmid/35759501&rft_galeid=A708415848&rft_doaj_id=oai_doaj_org_article_879942fb6431488d8e3c724e1c1a08e4&rfr_iscdi=true |