. Current topics in forest entomology : selected papers from the XVth International Congress of Entomology, Washington, , 1976. Forest insects Congresses. Biological Control Prospects of an Egg Parasite, Telenomus alsophilae Viereck G. F. Fedde, V. H. Fedde, and A. T. Drooz For many years, the egg parasite Tel- enomus alsophilae Viereck (fig. 1) was re- garded primarily in terms of its role in the effective control of its principal host, the fall cankerworm, Alsophila pometavia (Harris). Until recently, no one knew the extent of its capabilities or seriously con- sidered using it for biolo
. Current topics in forest entomology : selected papers from the XVth International Congress of Entomology, Washington, , 1976. Forest insects Congresses. Biological Control Prospects of an Egg Parasite, Telenomus alsophilae Viereck G. F. Fedde, V. H. Fedde, and A. T. Drooz For many years, the egg parasite Tel- enomus alsophilae Viereck (fig. 1) was re- garded primarily in terms of its role in the effective control of its principal host, the fall cankerworm, Alsophila pometavia (Harris). Until recently, no one knew the extent of its capabilities or seriously con- sidered using it for biological control purposes. In 1964, however, attitudes toward T. alsophilae changed in the wake of one of the most destructive outbreaks caused by the elm spanworm, Ennomos subsignavius (Hiibner), in eastern North America (Ciesla 1963, Drooz 1964). Ironically, the telenomid responsible for the dramatic collapse of that infestation eventually proved to be a species different from T. alsophilae (Drooz et al. 1976, Muesebeck 1978). Today, one can be optimistic about the prospects of T. alsophilae for biological control, largely because it is easy to rear under controlled conditions. No elaborate equipment is needed, nor are special precau- tions necessary to maintain continuous genera- tions throughout the year. Initially, our goal was to develop a rearing system that would free us from dependence on naturally parasitized material to keep our colonies going. We were also eager to find out more about the parasite's basic biology, particu- larly those aspects that would improve rearing efficiency. Host Rearing Rearing T. alsophilae successfully de- pends primarily upon providing suitable. Figure 1.—Telenomus alsophilae adult female. laboratory hosts on demand. When the canker- worm proved to be a recalcitrant host, other alternatives were investigated. In this regard, Maltby et al. (1973) discussed ad- vantages of turning to substitutes that ordinarily may not be parasitized in natur
Size: 1589px × 1572px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
