干旱区生态环境知识资源中心(Arid): Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor

Arid

DOI	10.1093/conphys/coab043
	Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor
	Bourne, Amanda R.; Ridley, Amanda R.; McKechnie, Andrew E.; Spottiswoode, Claire N.; Cunningham, Susan J.; Cooke, Steven
通讯作者	Bourne, AR (corresponding author), Univ Cape Town, DSI NRF Ctr Excellence, FitzPatrick Inst African Ornithol, Private Bag X3, ZA-7701 Rondebosch, South Africa.
来源期刊	CONSERVATION PHYSIOLOGY
ISSN	2051-1434
出版年	2021
卷号	9
英文摘要	High air temperatures have measurable negative impacts on reproduction in wild animal populations, including during incubation in birds. Understanding the mechanisms driving these impacts requires comprehensive knowledge of animal physiology and behaviour under natural conditions. We used a novel combination of a non-invasive doubly labelled water (DLW) technique, nest temperature data and field-based behaviour observations to test effects of temperature, rainfall and group size on physiology and behaviour during incubation in southern pied babblers Turdoides bicolor, a cooperatively breeding passerine endemic to the arid savanna regions of southern Africa. The proportion of time that clutches were incubated declined as air temperatures increased, a behavioural pattern traditionally interpreted as a benefit of ambient incubation. However, we show that (i) clutches had a <50% chance of hatching when exposed to daily maximum air temperatures of >35.3 degrees C; (ii) pied babbler groups incubated their nests almost constantly (99% of daylight hours) except on hot days; (iii) operative temperatures in unattended nests frequently exceeded 40.5 degrees C, above which bird embryos are at risk of death; (iv) pied babblers incubating for long periods of time failed to maintain water balance on hot days; and (v) pied babblers from incubating groups lost mass on hot days. These results suggest that pied babblers might leave their nests during hot periods to lower the risk of dehydration associated with prolonged incubation at high operative temperatures. As mean air temperatures increase and extreme heat events become more frequent under climate change, birds will likely incur ever greater thermoregulatory costs of incubation, leading to compromised nest attendance and increased potential for eggs to overheat, with implications for nest success and, ultimately, population persistence.
英文关键词	Climate change cooperative breeding high temperatures incubation parental care southern pied babbler
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000698592900001
WOS关键词	DOUBLY-LABELED WATER ; STANDARD OPERATIVE TEMPERATURE ; ARID-ZONE PASSERINE ; CLIMATE-CHANGE ; AVIAN THERMOREGULATION ; METABOLIC-RATE ; BODY CONDITION ; REPRODUCTIVE-PERFORMANCE ; FORAGING BEHAVIOR ; SHADING BEHAVIOR
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences ; Physiology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology ; Physiology
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362902
作者单位	[Bourne, Amanda R.; Ridley, Amanda R.; Spottiswoode, Claire N.; Cunningham, Susan J.] Univ Cape Town, DSI NRF Ctr Excellence, FitzPatrick Inst African Ornithol, Private Bag X3, ZA-7701 Rondebosch, South Africa; [Ridley, Amanda R.] Univ Western Australia, Ctr Evolutionary Biol, Sch Biol Sci, Crawley 6009, Australia; [McKechnie, Andrew E.] South African Natl Biodivers Inst, South African Res Chair Conservat Physiol, ZA-0184 Pretoria, South Africa; [McKechnie, Andrew E.] Univ Pretoria, DSI NRF Ctr Excellence FitzPatrick Inst, Dept Zool & Entomol, ZA-0002 Hatfield, South Africa; [Spottiswoode, Claire N.] Univ Cambridge, Dept Zool, Downing St, Cambridge CB2 3EJ, England
推荐引用方式 GB/T 7714	Bourne, Amanda R.,Ridley, Amanda R.,McKechnie, Andrew E.,et al. Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor[J]. University of Western Australia,2021,9.
APA	Bourne, Amanda R.,Ridley, Amanda R.,McKechnie, Andrew E.,Spottiswoode, Claire N.,Cunningham, Susan J.,&Cooke, Steven.(2021).Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor.CONSERVATION PHYSIOLOGY,9.
MLA	Bourne, Amanda R.,et al."Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor".CONSERVATION PHYSIOLOGY 9(2021).