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Tytuł pozycji:

Rise and Fall of an Oak Gall Wasp (Hymenoptera: Cynipidae) Outbreak in Massachusetts.

Tytuł :
Rise and Fall of an Oak Gall Wasp (Hymenoptera: Cynipidae) Outbreak in Massachusetts.
Autorzy :
Smith-Freedman CJ; Department of Biology, University of Massachusetts Amherst, Amherst, MA.
Andersen JC; Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA.
Griffin BP; Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA.
Schick K; Essig Museum of Entomology, University of California Berkeley, Berkeley, CA.
Elkinton JS; Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA.
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Źródło :
Environmental entomology [Environ Entomol] 2019 Dec 02; Vol. 48 (6), pp. 1277-1285.
Typ publikacji :
Journal Article; Research Support, Non-U.S. Gov't
Język :
English
Imprint Name(s) :
Publication: Oxford : Oxford University Press
Original Publication: College Park, Md., Entomological Society of America.
MeSH Terms :
Hymenoptera*
Quercus*
Wasps*
Animals ; Disease Outbreaks ; Female ; Massachusetts
Contributed Indexing :
Keywords: enemy release*; historical record*; parasitoid*
Entry Date(s) :
Date Created: 20191012 Date Completed: 20191212 Latest Revision: 20200108
Update Code :
20211105
DOI :
10.1093/ee/nvz115
PMID :
31603500
Czasopismo naukowe
The recently described oak gall wasp Zapatella davisae Buffington & Melika (Hymenoptera: Cynipidae) has caused extensive damage and mortality to black oak trees, Quercus velutina L. (Fagales: Fagaceae), in coastal parts of New England, United States. Like many newly described and/or newly introduced species, it is unclear how long populations of Z. davisae have existed in this region. However, as this species forms galls on the woody-tissue of its host, it may be possible to obtain historical information about changes in its population size by examining the presence of galls in relation to annual growth nodes. Here, we explore the utility of this approach to determine population size changes in Z. davisae densities on Nantucket, Martha's Vineyard, and Cape Cod, Massachusetts, through dissection of black oak branches. In addition, we calculated parasitism rates during the years of study and obtained morphological and molecular identifications for the parasitoids associated with Z. davisae. Our results show significant changes in population sizes, with higher levels of parasitism at sites on Martha's Vineyard and Cape Cod compared to sites on Nantucket. In addition, morphological examinations, in combination with DNA sequencing, identified the associated parasitoids as five species in the genus Sycophila Walker (Hymenoptera: Eurytomidae). We comment that considerable morphological variation within several of these recovered species was observed, present the first record of males for a species from which only females have been described, and suggest that future work is required to clarify the species boundaries for this important parasitoid group.
(© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

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