Dissertation/Thesis Abstract

Ovipositional cues for a galling wasp, Tetramesa romana, on giant reed (Arundo donax)
by Macias, Raymond A., M.S., California State University, Long Beach, 2017, 60; 10254696
Abstract (Summary)

Arundo donax is a rhizomatous perennial grass that invades riparian habitats and replaces native riparian vegetation. The galling wasp, Tetramesa romana (Hymenoptera: Eurytomidae), was selected for evaluation as a biocontrol agent of A. donax in 2009. However, knowledge is scarce on which factors influence host selection and oviposition in T. romana. Through my observations I documented distinct behavioral steps preceding emergence leading to oviposition in T. romana, and elicited an investigatory response in T. romana from plant volatiles extracted from A. donax. My results indicated that T. romana does use a chemical cue as a factor in host selection, but it is likely not the result of a species-specific constituent. Evidence from my study revealed that T. romana may use a physical cue in selecting a host as well. T. romana preferred round glass rods over flat glass slides, indicating that shape is an important factor in host acceptance.

Indexing (document details)
Advisor: Underwood, Dessie L.A.
Commitee: Dudley, Tom, Whitcraft, Christine
School: California State University, Long Beach
Department: Biological Sciences
School Location: United States -- California
Source: MAI 56/03M(E), Masters Abstracts International
Source Type: DISSERTATION
Subjects: Biology, Ecology, Entomology
Keywords:
Publication Number: 10254696
ISBN: 978-1-369-60814-4
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