Journal cover Journal topic
Web Ecology An open-access peer-reviewed journal
Journal topic

Journal metrics

IF value: 1.560
IF1.560
IF 5-year value: 1.117
IF 5-year
1.117
CiteScore value: 2.3
CiteScore
2.3
SNIP value: 0.459
SNIP0.459
SJR value: 0.41
SJR0.41
Scimago H <br class='widget-line-break'>index value: 16
Scimago H
index
16
Volume 5, issue 1
Web Ecol., 5, 6–13, 2005
https://doi.org/10.5194/we-5-6-2005
© Author(s) 2005. This work is distributed under
the Creative Commons Attribution 3.0 License.
Web Ecol., 5, 6–13, 2005
https://doi.org/10.5194/we-5-6-2005
© Author(s) 2005. This work is distributed under
the Creative Commons Attribution 3.0 License.

  06 Apr 2005

06 Apr 2005

Persistence of multiple identical parasitoid species in a single-host, spatial simulation

D. H. Slone1 and J. C. Allen2 D. H. Slone and J. C. Allen
  • 1USGS Florida Integrated Science Center, Gainesville, 32653, USA
  • 2Dept. of Ecology, Evolution and Marine Biology, Univ. of California, Santa Barbara, Santa Barbara, 93001, USA

Abstract. We explore the problem of persistence of multiple obligate parasitoids on a single host in a discrete time, spatially explicit system. In general, the parasitoids experienced extinction until one species remained well before the 50 000-generation time limit, but the rate varied according to the parameters of the system. Smaller arenas had a greater chance of extinction. Artificially increasing interspecific competition produced rapid extinction, while decreasing competition increased persistence to the maximum time limit of the simulation. Increasing the parasitoid search efficiency or decreasing dispersal of the parasitoids relative to the host produced less longevity as did increasing host reproduction, while increasing the rate of “patch extinction” reduced the variation among the times to extinction, but did not change the time to the first extinction. Finally, increasing noise in the search parameter first reduced longevity, but then it rapidly increased near the point where the noise reached an amplitude similar to the parameter itself, where coexistence of the four parasitoids was achieved.

Publications Copernicus
Download
Citation