Asset Details
Do you wish to reserve the book?
Time-Delayed Effects of Climate Variation on Host-Parasite Dynamics
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Time-Delayed Effects of Climate Variation on Host-Parasite Dynamics
Do you wish to request the book?
Time-Delayed Effects of Climate Variation on Host-Parasite Dynamics
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Time-Delayed Effects of Climate Variation on Host-Parasite Dynamics
2002
Overview
Parasites are ubiquitous, but widely neglected, components of food webs. Because of their trophic position, parasites may have major direct and indirect effects on community structure. Because the magnitude of these effects is likely to depend on parasite density, this study was undertaken to explore temporal patterns in the density of parasites and the processes responsible for those patterns. Parasitism by Howardula nematodes was monitored in four species of mycophagous Drosophila (D. falleni, D. neotestacea, D. putrida, and D. recens) that were sampled monthly from 1984 through 1998 near Rochester, New York, USA. Adult flies were collected by sweep netting over naturally occurring mushrooms or commercial Agaricus bisporus mushrooms that had been set out as baits. These adults were then dissected to determine whether they were parasitized by Howardula nematodes. The prevalence of parasitism varied substantially among species, being greatest in D. neotestacea (23.0% infected) and least in D. recens (4.8%). Parasitism was greatest in the spring and fall, and least in midsummer. Prevalence of parasitism covaried significantly through time among the three principal host species, D. falleni, D. neotestacea, and D. putrida, in part because the different species often breed in the same individual mushrooms, the site where nematode transmission from adult flies to larvae occurs. The mean prevalence of parasitism across these three species at the end of the season (September) was significantly correlated with the total precipitation from May through August. The mean prevalence of parasitism in the spring collections was significantly correlated with the mean prevalence the previous fall, because flies overwinter as adults. Consequently, the mean prevalence of parasitism in spring was highly correlated with May through August precipitation the previous year. It is hypothesized that rainfall, which stimulates the production of mushrooms (the flies' breeding sites), interacts with density-dependent nematode transmission to influence the prevalence of parasitism in these populations.
Publisher
Ecological Society of America
Subject
/ Animal, plant and microbial ecology
/ Animals
/ autumn
/ baits
/ Biological and medical sciences
/ Climate
/ climate and host–parasite interaction
/ Ecology
/ Ecology of Parasites and Parasitoids
/ Fundamental and applied biological sciences. Psychology
/ hosts
/ imagos
/ interaction of climate and density-dependent factors
/ larvae
/ New York
/ parasite population dynamics
/ rain
/ spring
/ Studies
/ summer
