Arid
DOI10.1098/rsbl.2017.0301
Drought-induced starvation of aardvarks in the Kalahari: an indirect effect of climate change
Rey, Benjamin1,2; Fuller, Andrea1; Mitchell, Duncan1; Meyer, Leith C. R.1,3; Hetem, Robyn S.1,4
通讯作者Rey, Benjamin
来源期刊BIOLOGY LETTERS
ISSN1744-9561
EISSN1744-957X
出版年2017
卷号13期号:7
英文摘要

Aardvarks (Orycteropus afer) are elusive burrowing mammals, predominantly nocturnal and distributed widely throughout Africa except for arid deserts. Their survival may be threatened by climate change via direct and indirect effects of increasing heat and aridity. To measure their current physiological plasticity, we implanted biologgers into six adult aardvarks resident in the semi-arid Kalahari. Following a particularly dry and hot summer, five of the study aardvarks and 11 other aardvarks at the study site died. Body temperature records revealed homeothermy (35.4-37.2 degrees C) initially, but heterothermy increased progressively through the summer, with declining troughs in the nychthemeral rhythm of body temperature reaching as low as 25 degrees C before death, likely due to starvation. Activity patterns shifted from the normal nocturnal to a diurnal mode. Our results do not bode well for the future of aardvarks facing climate change. Extirpation of aardvarks, which play a key role as ecosystem engineers, may disrupt stability of African ecosystems.


英文关键词climate change body temperature physiological flexibility
类型Article
语种英语
国家South Africa ; France
收录类别SCI-E
WOS记录号WOS:000409400700008
WOS关键词ORYCTEROPUS-AFER ; ECOSYSTEM ENGINEERS ; ACTIVITY PATTERNS ; KAROO
WOS类目Biology ; Ecology ; Evolutionary Biology
WOS研究方向Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197867
作者单位1.Univ Witwatersrand, Sch Physiol, Brain Funct Res Grp, Fac Hlth Sci, 7 York Rd, ZA-2193 Johannesburg, South Africa;
2.Univ Lyon 1, CNRS, UMR5558, Lab Biometrie & Biol Evolut, F-69622 Villeurbanne, France;
3.Univ Pretoria, Dept Paraclin Sci, Fac Vet Sci, Soutpan Rd, ZA-0110 Pretoria, South Africa;
4.Univ Witwatersrand, Sch Anim Plant & Environm Sci, Fac Sci, 1 Jan Smuts Ave, ZA-2000 Johannesburg, South Africa
推荐引用方式
GB/T 7714
Rey, Benjamin,Fuller, Andrea,Mitchell, Duncan,et al. Drought-induced starvation of aardvarks in the Kalahari: an indirect effect of climate change[J],2017,13(7).
APA Rey, Benjamin,Fuller, Andrea,Mitchell, Duncan,Meyer, Leith C. R.,&Hetem, Robyn S..(2017).Drought-induced starvation of aardvarks in the Kalahari: an indirect effect of climate change.BIOLOGY LETTERS,13(7).
MLA Rey, Benjamin,et al."Drought-induced starvation of aardvarks in the Kalahari: an indirect effect of climate change".BIOLOGY LETTERS 13.7(2017).
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