Biological Control of Rhodes-Grass Seale in Texas1
Authors: DEAN, H. A.; SCHUSTER, MICHAEL F.
Source: Journal of Economic Entomology, Volume 51, Number 3, June 1958 , pp. 363-366(4)
Publisher: Entomological Society of America
Abstract:The degree to which Anagyrus antoninae attacks Rhodes-grass scale, Antonina graminis (Mask.), in the south Texas area was found to vary considerably throughout the year and at various locations, The parasite could be recovered in a drouth area of King- Ranch, Kingsville only after repeated releases during the period, October 1955 to January 1956. At several locations in the Lower Rio Grande Valley, parasitism decreased during April and become progressively less to the point of being scarce during the summer months. The greatest extent of parasitism occurred during October to March. Parasites were more prevalent during periods in which temperatures seldom reached 90. The low relative humidity in the summer and fall of 1956 was considered an important factor responsible for the low parasite activity during the fall.
Laboratory tests showed that Mariella graminicola acted as a hyper parasite of Rhodes-grass scale through A. antoninae
Several parasite of grass-infesting scale insects were introduced from France, but no recoveries have been made. Several predators of the scale were found.
Document Type: Research Article
Publication date: 1958-06-01
- 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.
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