A Comparison of Longevity and Fecundity of Adult Trichogramma platneri (Hymenoptera: Trichogrammatidae) Reared from Eggs of the Cabbage Looper and the Angumouis Grain Moth, with and without Access to Honey
Authors: HOHMANN, CELSO L.; LUCK, ROBERT F.; OATMAN, E. R.
Source: Journal of Economic Entomology, Volume 81, Number 5, October 1988 , pp. 1307-1312(6)
Publisher: Entomological Society of America
Abstract:The effects of Sitotroga cerealella (Olivier) and Trichoplusia ni (Hübner) eggs on the size, fecundity, and longevity, and of honey on the fecundity and longevity of Trichogramma platneri Nagarkatti were investigated. Variation in the average length of the hind tibiae (HTL), a measure of a wasp's body size, accounted for 72% of the variance in the number of mature eggs present in the ovaries of a 24-h-old T. platneri. Females with longer HTLs produced significantly more eggs and lived longer than did those with shorter HTLs. Large females (HTL = 0.21 ± 0.009 mm, x ± SD) produced 2.3 times more offspring than medium-sized females (HTL =0.17 ± 0.009mm) and 5.5 times more than small females (HTL = 0.15 ± 0.004 mm). Females reared from S. cerealella eggs were significantly smaller (HTL = 0.14 ± 0.006 mm) than those reared from T. ni eggs (HTL = 0.17 ± 0.020 mm) and produced fewer offspring (18.2 ± 13 eggs versus 42.6 ± 25 eggs, respectively); hence, S. cerealella eggs apparently produce low-quality T. platneri females. Furthermore, T. Platneri lived longer with than without honey whether or not host eggs were present. Thus, the absence of a carbohydrate source (e.g., honey or honeydew) at the time of field release may limit the effectiveness of T. platneri.
Document Type: Research Article
Publication date: 1988-10-01
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
- Editorial Board
- Submit a Paper
- Subscribe to this Title
- Information for Advertisers
- Visit this journal's homepage
- ingentaconnect is not responsible for the content or availability of external websites