干旱区生态环境知识资源中心(Arid): Behaviour of an alpine range-restricted species is described by interactions between microsite use and temperature

Arid

DOI	10.1016/j.anbehav.2019.09.006
	Behaviour of an alpine range-restricted species is described by interactions between microsite use and temperature
	Oswald, Krista N.1,2; Smit, Ben 1,2; Lee, Alan T. K.3,4; Cunningham, Susan J.4
通讯作者	Smit, Ben
来源期刊	ANIMAL BEHAVIOUR
ISSN	0003-3472
EISSN	1095-8282
出版年	2019
卷号	157 页码:177-187
英文摘要	Climate change predictions include increased mean temperatures and increased frequency of heatwaves. Short-term responses to high air temperatures can allow animals to conserve water while maintaining a safe body temperature. For birds, cooling is often through evaporative water loss, which can be physiologically costly. Microsite use is an effective means of conserving water via reducing environmental heat load, so long as there are no negative trade-offs with other necessary functions, such as foraging. We examined behavioural responses to temperature in Cape rockjumpers, Chaetops frenatus (hereafter: 'rockjumper'), an alpine specialist bird. We hypothesized that rockjumper behaviours would be temperature and microsite dependent. We collected data on rockjumper microsite use (sun, rock shade), behaviour (activity, foraging, preening, panting) and temperature (air, environmental). Rockjumpers made increased use of rock shade as air temperature increased. However, birds in rock shade foraged less. Depending on where their main food source is located, this suggests that when foraging demands are high, birds may need to remain in the sun despite risks of high thermal load, or else may suffer costs of lost foraging opportunities when using shade. The relationship between air temperature and heat dissipation behaviour (panting) was also mediated by microsite: birds showed significant increases in panting with increasing air temperature only when in the sun. The lack of increase in panting for birds in rock shade suggests that shade seeking may buffer physiological thermoregulatory costs (i.e. water expenditure). Individuals may therefore be able to mitigate some potential negative effects of high temperatures by making use of cooler microsites, although this could come at a cost to foraging. (C) 2019 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
英文关键词	alpine endemic behavioural buffering behavioural trade-offs climate relict microsite use range-restricted species
类型	Article
语种	英语
国家	South Africa
收录类别	SCI-E
WOS记录号	WOS:000493780600019
WOS关键词	ARID-ZONE PASSERINE ; ADAPTIVE THERMOREGULATION ; PHYSIOLOGICAL-RESPONSES ; DRINKING PATTERNS ; FORAGING BEHAVIOR ; CAPE ROCKJUMPER ; BODY CONDITION ; CLIMATE-CHANGE ; HABITAT USE ; WATER-LOSS
WOS类目	Behavioral Sciences ; Zoology
WOS研究方向	Behavioral Sciences ; Zoology
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310608
作者单位	1.Rhodes Univ, Dept Zool & Entomol, Grahamstown, South Africa; 2.Nelson Mandela Univ, Dept Zool, Port Elizabeth, South Africa; 3.Univ KwaZulu Natal, Sch Life Sci, Scottsville, South Africa; 4.Univ Cape Town, DST NRF Ctr Excellence, FitzPatrick Inst African Ornithol, Rondebosch, South Africa
推荐引用方式 GB/T 7714	Oswald, Krista N.,Smit, Ben,Lee, Alan T. K.,et al. Behaviour of an alpine range-restricted species is described by interactions between microsite use and temperature[J],2019,157:177-187.
APA	Oswald, Krista N.,Smit, Ben,Lee, Alan T. K.,&Cunningham, Susan J..(2019).Behaviour of an alpine range-restricted species is described by interactions between microsite use and temperature.ANIMAL BEHAVIOUR,157,177-187.
MLA	Oswald, Krista N.,et al."Behaviour of an alpine range-restricted species is described by interactions between microsite use and temperature".ANIMAL BEHAVIOUR 157(2019):177-187.