The ability to use multiple hosts is consistent with a broad period of emergence of parasitoids, as their phenologies would be expected to be synchronized with their original host if they were monophagous. The parasite community of oak apple see more galls consists of many species at different trophic
levels, which allows for many complex species interactions (Table 1). Gall size and phenology appear to be important correlates to the abundance of some of the most common insects within those galls. While this study cannot assess whether the difference in host association by parasitoids is caused by niche differentiation (competitive exclusion between different community members under different conditions) or simply reflects innate habitat preferences of the different insects involved, our results are consistent with a pattern of niche differentiation among parasitoids and inquilines of oak apple galls. Manipulations of parasitoid abundances and associations, as well as assessments of parasite host niche-breadths, will ultimately help us to understand the diversity of parasites observed on cynipid galls. Such studies, however, benefit from a detailed examination of the natural histories of the organisms involved, as subtle Geneticin in vivo life history traits can affect the interaction between host and parasite. Acknowledgments We would like
to thank Steve Heydon and John DeBenedictis for help with insect identification, Les Ehler for his help in rearing insects from the galls, and Rick Karban, Les Ehler, and Jay Rosenheim for helpful reviews. This work was supported by an NSF-GRFP grant to ISP. Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. References Abe Y (2006) Taxonomic status of the genus Trichagalma (Hymenoptera: Cynipidae), with description of the bisexual generation. In: Ozaki K, Yukawa J, Ohgushi T, Price PW (eds) Galling
arthropods and their associates: ecology and evolution. Springer, Tokyo, pp 287–295CrossRef Askew RR (1980) The diversity of insect communities in leaf mines and plant galls. J Anim Ecol 49(3):817–829CrossRef Bailey R, Schonrogge K, Cook JM, Melika G, Csoka G, https://www.selleckchem.com/products/ve-822.html Thuroczy C, Stone GN (2009) Host niches and defensive extended phenotypes structure parasitoid Pregnenolone wasp communities. PLoS Biol 7(8):1–12CrossRef Craig TP, Itami JK, Price PW (1990) The window of vulnerability of a shoot-galling sawfly to attack by a parasitoid. Ecology 71(4):1471–1482CrossRef Csoka G, Stone GN, Melika G (2005) Biology, ecology, and evolution of gall-inducing Cynipidae. In: Raman A, Schaefer CW, Withers TM (eds) Biology, ecology, and evolution of gall-inducing arthropods.2. Science Publishers Enfield, NH, pp 573–642 Dohanian SM (1942a) Parasites of the filbert worm. J Econ Entomol 35(6):836–841 Dohanian SM (1942b) Variability of diapanse in Melissopus latiferreanus.
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