Eur. J. Entomol. 90 (3): 295-301, 1993

Seasonal changes in ovipositional selectivity in the monophagous leaf beetle Zygogramma suturalis (Coleoptera: Chrysomelidae)

REZNIK S.Y.
N/A

Results from field samples indicate that the percentage of eggs laid by the monophagous leaf beetle, Zygogramma suturalis directly on the host plant (Ambrosia artemisiifolia) changes during the course of the season. These changes in oviposition were not associated with changes in the host specificity of larvae or adult beetles. In June-August the percentage of eggs laid on A. artemisiifolia was inversely correlated with Z. suturalis larval population density. It is speculated that high larval density deterred ovipositing females.

Keywords: Behavior, host plant, oviposition, population density, weeds, biological control, Zygogramma, Ambrosia

Accepted: April 22, 1993; Published: October 25, 1993  Show citation

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REZNIK, S.Y. (1993). Seasonal changes in ovipositional selectivity in the monophagous leaf beetle Zygogramma suturalis (Coleoptera: Chrysomelidae). EJE, 90(3), 295-301
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