Annual environmental variation influences host tolerance to parasites
Annual environmental variation influences host tolerance to parasites
复制标题
年度环境变化影响宿主对寄生虫的耐受性
DOI:
10.1098/rspb.2019.0049
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Clayton, Dale H.
中科院分区:
文献类型:
--
作者:
McNew, Sabrina M.;Knutie, Sarah A.;Goodman, Graham B.;Theodosopoulos, Angela;Saulsberry, Ashley;Yépez R., Janai;Bush, Sarah E.;Clayton, Dale H.
When confronted with a parasite or pathogen, hosts can defend themselves by resisting or tolerating the attack. While resistance can be diminished when resources are limited, it is unclear how robust tolerance is to changes in environmental conditions. Here, we investigate the sensitivity of tolerance in a single host population living in a highly variable environment. We manipulated the abundance of an invasive parasitic fly,Philornis downsi, in nests of Galápagos mockingbirds (Mimus parvulus) over four field seasons and measured host fitness in response to parasitism. Mockingbird tolerance toP. downsivaried significantly among years and decreased when rainfall was limited. Video observations indicate that parental provisioning of nestlings appears key to tolerance: in drought years, mockingbirds likely do not have sufficient resources to compensate for the effects ofP. downsi. These results indicate that host tolerance is a labile trait and suggest that environmental variation plays a major role in mediating the consequences of host–parasite interactions.
登录
查看更多内容
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
B. Fessl;M. Couri;S. Tebbich
通讯作者:
S. Tebbich
影响因子:
3.4
作者:
Howick VM;Lazzaro BP
通讯作者:
Lazzaro BP
影响因子:
2.6
作者:
Koop, Jennifer A. H.;Owen, Jeb P.;Knutie, Sarah A.;Aguilar, Maria A.;Clayton, Dale H.
通讯作者:
Clayton, Dale H.
影响因子:
3.7
作者:
Rauw WM
通讯作者:
Rauw WM
影响因子:
11.8
作者:
D. Haydon;S. Cleaveland;L. H. Taylor;M. Laurenson
通讯作者:
M. Laurenson