Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae)
The little red kaluta (Dasykaluta rosamondae) is a small, insectivorous–carnivorous dasyurid marsupial found in arid spinifex grasslands of northwestern Australia. Kalutas resemble other dasyurids in many aspects of their physiology. Body temperature (Tb; 33.5°C; 1.5°C lower than predicted), wet the...
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| Format: | Journal Article |
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Allen Press
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/28754 |
| _version_ | 1848752621301530624 |
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| author | Withers, Philip Cooper, Christine |
| author_facet | Withers, Philip Cooper, Christine |
| author_sort | Withers, Philip |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The little red kaluta (Dasykaluta rosamondae) is a small, insectivorous–carnivorous dasyurid marsupial found in arid spinifex grasslands of northwestern Australia. Kalutas resemble other dasyurids in many aspects of their physiology. Body temperature (Tb; 33.5°C; 1.5°C lower than predicted), wet thermal conductance (1.6 J g−1 h−1 °C−1; 91% of predicted), and dry thermal conductance (1.22 J g−1 h−1 °C−1; 55% of predicted) are not significantly different from allometric predictions for marsupials in the thermoneutral zone (26–33°C). A significantly lower-than-expected basal metabolic rate (0.55 ml O2 g−1 h−1; 58% of allometric prediction) and evaporative water loss (1.11 mg g−1 h−1; 39% of predicted) can be attributed to the combined effect of low Tb and phylogeny. Physiological adaptation to aridity is further reflected by a substantially smaller body mass (35 g) than predicted by phylogeny (200 g), a thermolabile Tb and use of torpor, which confer significant energy and water savings, and a high point of relative water economy (16.1°C). |
| first_indexed | 2025-11-14T08:11:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-28754 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:11:32Z |
| publishDate | 2009 |
| publisher | Allen Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-287542020-06-22T05:11:35Z Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae) Withers, Philip Cooper, Christine The little red kaluta (Dasykaluta rosamondae) is a small, insectivorous–carnivorous dasyurid marsupial found in arid spinifex grasslands of northwestern Australia. Kalutas resemble other dasyurids in many aspects of their physiology. Body temperature (Tb; 33.5°C; 1.5°C lower than predicted), wet thermal conductance (1.6 J g−1 h−1 °C−1; 91% of predicted), and dry thermal conductance (1.22 J g−1 h−1 °C−1; 55% of predicted) are not significantly different from allometric predictions for marsupials in the thermoneutral zone (26–33°C). A significantly lower-than-expected basal metabolic rate (0.55 ml O2 g−1 h−1; 58% of allometric prediction) and evaporative water loss (1.11 mg g−1 h−1; 39% of predicted) can be attributed to the combined effect of low Tb and phylogeny. Physiological adaptation to aridity is further reflected by a substantially smaller body mass (35 g) than predicted by phylogeny (200 g), a thermolabile Tb and use of torpor, which confer significant energy and water savings, and a high point of relative water economy (16.1°C). 2009 Journal Article http://hdl.handle.net/20.500.11937/28754 10.1644/08-MAMM-A-286R.1 Allen Press unknown |
| spellingShingle | Withers, Philip Cooper, Christine Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae) |
| title | Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae) |
| title_full | Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae) |
| title_fullStr | Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae) |
| title_full_unstemmed | Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae) |
| title_short | Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae) |
| title_sort | thermal, metabolic and hygric physiology of the little red kaluata, daskaluta rosamondae (dasyuromorphia: dasyuridae) |
| url | http://hdl.handle.net/20.500.11937/28754 |