干旱区生态环境知识资源中心(Arid): Helpers don't help when it's hot in a cooperatively breeding bird, the Southern Pied Babbler

Arid

DOI	10.1093/beheco/arad023
	Helpers don't help when it's hot in a cooperatively breeding bird, the Southern Pied Babbler
	Bourne, Amanda R.; Ridley, Amanda R.; Cunningham, Susan J.
通讯作者	Bourne, AR
来源期刊	BEHAVIORAL ECOLOGY
ISSN	1045-2249
EISSN	1465-7279
出版年	2023
卷号	34 期号:4 页码:562-570
英文摘要	Cooperative breeding, where more than two individuals invest in rearing a single brood, occurs in many bird species globally and often contributes to improved breeding outcomes. However, high temperatures are associated with poor breeding outcomes in many species, including cooperative species. We used data collected over three austral summer breeding seasons to investigate the contribution that helpers make to daytime incubation in a cooperatively breeding species, the Southern Pied Babbler Turdoides bicolor, and the ways in which their contribution is influenced by temperature. Helpers spent a significantly higher percentage of their time foraging (41.8 +/- 13.7%) and a significantly lower percentage of their time incubating (18.5 +/- 18.8%) than members of the breeding pair (31.3 +/- 11% foraging and 37.4 +/- 15.7% incubating). In groups with only one helper, the helper's contribution to incubation was similar to that of breeders. However, helpers in larger groups contributed less to incubation, individually, with some individuals investing no time in incubation on a given observation day. Helpers significantly decrease their investment in incubation on hot days (>35.5 degrees C), while breeders tend to maintain incubation effort as temperatures increase. Our results demonstrate that pied babblers share the workload of incubation unequally between breeders and helpers, and this inequity is more pronounced during hot weather. These results may help to explain why recent studies have found that larger group size does not buffer against the impacts of high temperatures in this and other cooperatively breeding species.
英文关键词	arid zone avian reproduction cooperative breeding dryland ecology load-lightening reproductive success temporal variability hypothesis Turdoides bicolor
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000972167900001
WOS关键词	GROUP-SIZE ; HIGH-TEMPERATURES ; BODY CONDITION ; CLIMATE-CHANGE ; TRADE-OFFS ; EVOLUTION ; INVESTMENT ; SURVIVAL ; BEHAVIOR ; COST
WOS类目	Behavioral Sciences ; Biology ; Ecology ; Zoology
WOS研究方向	Behavioral Sciences ; Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395532
推荐引用方式 GB/T 7714	Bourne, Amanda R.,Ridley, Amanda R.,Cunningham, Susan J.. Helpers don't help when it's hot in a cooperatively breeding bird, the Southern Pied Babbler[J],2023,34(4):562-570.
APA	Bourne, Amanda R.,Ridley, Amanda R.,&Cunningham, Susan J..(2023).Helpers don't help when it's hot in a cooperatively breeding bird, the Southern Pied Babbler.BEHAVIORAL ECOLOGY,34(4),562-570.
MLA	Bourne, Amanda R.,et al."Helpers don't help when it's hot in a cooperatively breeding bird, the Southern Pied Babbler".BEHAVIORAL ECOLOGY 34.4(2023):562-570.