Fourth Contribution to a Study of Baits, With Special Reference to the Oriental Fruit Moth

1929 ◽  
Vol 22 (1) ◽  
pp. 101-108 ◽  
Author(s):  
S. W. Frost
Keyword(s):  
Special Reference ◽  
Oriental Fruit Moth

TRICHOGRAMMA MINUTUM RILEY AS A PARASITE OF THE ORIENTAL FRUIT MOTH (LASPEYRESIA MOLESTA BUSCK.) IN ONTARIO

1934 ◽  
Vol 10 (3) ◽  
pp. 287-314 ◽  
Author(s):  
W. E. Van Steenburgh
Keyword(s):  
Biological Control ◽  
New Jersey ◽  
Special Reference ◽  
Oriental Fruit Moth ◽  
Practical Significance ◽  
Considerable Importance ◽  
Natural Control ◽  
Host Abundance ◽  
Egg Parasite ◽  
Trichogramma Minutum

The investigations described in this paper were carried out during the period 1928–1933, and deal with the egg parasite, Trichogramma minutum Riley, with special reference to its field of usefulness in the biological control of the oriental fruit moth (Laspeyresia molesta Busck.) in Ontario. This cosmopolitan parasite is a factor of considerable importance in regulating the abundance of the fruit moth in southern New Jersey, but appears to be of little practical significance in the natural control of the pest in Ontario. Under certain conditions of weather and host abundance, parasitism may be increased materially by the liberation of Trichogramma in the orchards but, in general, the results are not dependable. A large number of experiments were conducted utilizing three biological races of the species. The technique employed in the work and the results obtained are given as well as a number of important observations on the habits and biology of the parasite.

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