干旱区生态环境知识资源中心(Arid): Context-dependent insect predation pressure on an avian ectoparasite

Arid

DOI	10.1111/1744-7917.13197
	Context-dependent insect predation pressure on an avian ectoparasite
	Salido, Angela; Veiga, Jesus; Reyes-Lopez, Joaquin Luis; Valera, Francisco
通讯作者	Valera, F
来源期刊	INSECT SCIENCE
ISSN	1672-9609
EISSN	1744-7917
出版年	2023
卷号	30 期号:6 页码:1784-1797
英文摘要	Context dependence arises when ecological relationships vary with the conditions under which they are observed. Context dependence of interactions involving parasites is poorly known, even if it is key to understanding host-parasite relationships and food web dynamics. This paper investigates to which extent predation pressure on an avian ectoparasite (Carnus hemapterus) is context-dependent. Based on a predator-exclusion experiment, predation pressure on C. hemapterus pupae in the host's nest for 3 years, and its variation between habitat types are quantified. Variation in precipitation and normalized difference vegetation index (NDVI) is also explored as a likely cause of context dependency. We hypothesize that predation pressure should fluctuate with such surrogates of food availability, so that inter-annual and intra-annual differences may emerge. The number of nests with significant reduction of pupae varied widely among years ranging from 24% to 75%. However, average pupae reduction in nests where a significant reduction occurred did not vary between years. No differences in predation rates between habitat types were detected. Precipitation and NDVI varied widely between years and NDVI was consistently lower around nests on cliffs than around nests on trees and farmhouses. Parallels were found between variation in predation pressure and precipitation/NDVI at a wide scale (highest predation the driest year, and much lower the 2 rainier ones), but not at the nest scale. This paper shows clear context-dependent insect predation pressure on an ectoparasite under natural conditions, and that such interaction changes in signs rather than magnitude between years. The causes for these variations require longer-term studies and/or well-designed, large-scale experiments.
英文关键词	ants arid areas Carnus hemapterus consumer-resource interaction ecosystem productivity predator-parasite rainfall
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000975373200001
WOS关键词	CARNUS-HEMAPTERUS DIPTERA ; VEGETATION INDEX ; FORAGING THEORY ; ANT ; PREY ; HOST ; PARASITES ; COMMUNITY ; DYNAMICS ; PATTERNS
WOS类目	Entomology
WOS研究方向	Entomology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396947
推荐引用方式 GB/T 7714	Salido, Angela,Veiga, Jesus,Reyes-Lopez, Joaquin Luis,et al. Context-dependent insect predation pressure on an avian ectoparasite[J],2023,30(6):1784-1797.
APA	Salido, Angela,Veiga, Jesus,Reyes-Lopez, Joaquin Luis,&Valera, Francisco.(2023).Context-dependent insect predation pressure on an avian ectoparasite.INSECT SCIENCE,30(6),1784-1797.
MLA	Salido, Angela,et al."Context-dependent insect predation pressure on an avian ectoparasite".INSECT SCIENCE 30.6(2023):1784-1797.