Impact of Peach Extrafloral Nectar on Key Biological Characteristics of Trichogramma minutum (Hymenoptera: Trichogrammatidae)

Peter W. Shearer; Atanas Atanassov

doi:10.1603/0022-0493(2004)097[0789:IOPENO]2.0.CO;2

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Peter W. Shearer,¹ Atanas Atanassov¹

¹Department of Entomology, Rutgers, The State University of New Jersey, Rutgers Agricultural Research and Extension Center, 121 Northville Road, Bridgeton, NJ 08302–5919

Abstract

This study investigated the longevity, fecundity, and host feeding of a wild and a commercially reared strain of Trichogramma minutum Riley (Hymenoptera: Trichogrammatidae) when presented with peach extrafloral nectar. Both the wild and commercial T. minutum strains lived longer and parasitized more Grapholita molesta (Busck) eggs when provided peach extrafloral nectar and water than when provided only water. Nectar-fed wild and commercially reared females lived 11.6 and 9.9 d and produced 105.2 and 61.0 offspring, respectively. When provided only water, wild females lived 3.3 d and produced 52.8 offspring, whereas commercially reared females lived 2.0 d and produced 24.4 offspring. Nectar feeding significantly increased the number of G. molesta eggs destroyed by host feeding by both wild and commercial strains.

Citation Download Citation

Peter W. Shearer and Atanas Atanassov "Impact of Peach Extrafloral Nectar on Key Biological Characteristics of Trichogramma minutum (Hymenoptera: Trichogrammatidae)," Journal of Economic Entomology 97(3), 789-792, (1 June 2004). https://doi.org/10.1603/0022-0493(2004)097[0789:IOPENO]2.0.CO;2

Received: 28 July 2003; Accepted: 18 February 2004; Published: 1 June 2004