干旱区生态环境知识资源中心(Arid): A sex-influenced flexible foraging strategy in a tropical seabird, the magnificent frigatebird

Arid

DOI	10.3354/meps12859
	A sex-influenced flexible foraging strategy in a tropical seabird, the magnificent frigatebird
	Austin, Rhiannon E.1,2; De Pascalis, Federico 1; Arnould, John P. Y.3; Haakonsson, Jane 4; Votier, Stephen C.2; Ebanks-Petrie, Gina 4; Austin, Tim 4; Morgan, Greg 5; Bennett, Georgia 1; Green, Jonathan A.1
通讯作者	Austin, Rhiannon E.
来源期刊	MARINE ECOLOGY PROGRESS SERIES
ISSN	0171-8630
EISSN	1616-1599
出版年	2019
卷号	611 页码:203-214
英文摘要	To successfully exploit resources, animals must be adapted to operate under phenotypic and environmental constraints. The strategies that predators use to locate prey are therefore diverse, particularly for breeding central-place foragers that must balance investment in reproduction and self-maintenance. Magnificent frigatebirds Fregata magnificens are tropical seabirds with intriguing morphology and feeding ecology, which display strikingly unequal levels of parental care (males deserting offspring months before females). These unusual traits can better help us understand the links between movement behaviour and breeding strategies in this poorly studied species. Using archival GPS, GPS-GSM loggers, bird-borne cameras and dietary data, we investigated the foraging ecology of chick-rearing magnificent frigatebirds from a breeding population in the Cayman Islands. This population engages in 2 main foraging strategies: (1) coastal trips over the continental shelf, where individuals target reef species and engage in kleptoparasitism, and (2) offshore trips during which birds feed on schooling pelagic prey. Differences in strategy use were partially linked to sex, with males (which invest less in offspring) roaming further from nests, and showing a higher propensity to forage offshore. Video data further indicated differences in social information use between strategies: foraging with conspecifics was more prevalent in coastal environments than pelagic. We suggest that observed variation in at-sea behaviour may partially be mediated by sex-based differences in parental roles, and/or size differences leading to intraspecific competition. Our study provides evidence of bimodal foraging and sheds new light on the importance of both pelagic and coastal feeding in this enigmatic species.
英文关键词	Fregata magnificens Tracking Seabird Feeding ecology Video logger
类型	Article
语种	英语
国家	England ; Australia ; Cayman Islands ; Wales
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000464518200015
WOS关键词	GREAT FRIGATEBIRDS ; WANDERING ALBATROSSES ; PARENTAL CARE ; AUK ALLE ; BEHAVIOR ; LONG ; BIRDS ; CHICK ; DIMORPHISM ; RESOURCE
WOS类目	Ecology ; Marine & Freshwater Biology ; Oceanography
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Oceanography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217549
作者单位	1.Univ Liverpool, Sch Environm Sci, Liverpool L69 3GP, Merseyside, England; 2.Univ Exeter, Environm & Sustainabil Inst, Penryn TR10 9FE, England; 3.Deakin Univ, Sch Life & Environm Sci, Burwood Campus, Burwood, Vic 3125, Australia; 4.Cayman Islands Govt, Dept Environm, KY1-1002 Grand Cayman, Cayman Islands; 5.RSPB, St Davids SA62 6PY, Pembroke, Wales
推荐引用方式 GB/T 7714	Austin, Rhiannon E.,De Pascalis, Federico,Arnould, John P. Y.,et al. A sex-influenced flexible foraging strategy in a tropical seabird, the magnificent frigatebird[J],2019,611:203-214.
APA	Austin, Rhiannon E..,De Pascalis, Federico.,Arnould, John P. Y..,Haakonsson, Jane.,Votier, Stephen C..,...&Green, Jonathan A..(2019).A sex-influenced flexible foraging strategy in a tropical seabird, the magnificent frigatebird.MARINE ECOLOGY PROGRESS SERIES,611,203-214.
MLA	Austin, Rhiannon E.,et al."A sex-influenced flexible foraging strategy in a tropical seabird, the magnificent frigatebird".MARINE ECOLOGY PROGRESS SERIES 611(2019):203-214.