The Re-introduction and Recovery of Lydella stabulans grisescens, a Parasite of the European Corn Borer in Delaware1
- 1 February 1962
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 55 (1) , 11-14
- https://doi.org/10.1093/jee/55.1.11
Abstract
Lydella stabulans grisescens Robineau-Defvoidy, an imported parasite of the European corn borer (Ostrinia nubilalis(Hübner)) was released in Delaware in June, 1959. Prior to these releases parasitism of the borer was practically nonexistent. A total of 2,933 adult parasites were released in six areas of the State. In the fall of 1959 and winter of 1960 a total of 88 fields were sampled and 4,249 borers were collected for parasite emergence. L. stabulans grisescens was the only parasite recovered in any abundance. It was recovered from 16 of the 88 fields sampled. Parasitism in these fields ranged from 2.1% to 7.7%, with a mean of 3.45. Dispersal occurred in at least two different directions in every positive sampling area with one exception, where dispersal was northward only. Maximum distance of dispersal was at least 2 miles.This publication has 1 reference indexed in Scilit:
- European Corn Borer Populations in Relation to the Estimation of Crop Loss1Journal of Economic Entomology, 1960