Laboratory Tests on the Oriental Fruit Moth with Special Reference to DDT

1944 ◽  
Vol 37 (1) ◽  
pp. 122-123 ◽  
Author(s):  
G. E. Carman ◽  
C. A. Fleschner
Keyword(s):  
Special Reference ◽  
Laboratory Tests ◽  
Oriental Fruit Moth

EFFECT OF CONSTANT TEMPERATURES ON THE NUMBER OF LARVAL INSTARS OF THE ORIENTAL FRUIT MOTH, GRAPHOLITHA MOLESTA (LEPIDOPTERA: TORTRICIDAE)

1978 ◽  
Vol 110 (6) ◽  
pp. 623-626 ◽  
Author(s):  
W. P. Roberts ◽  
Jean R. Proctor ◽  
J. H. H. Phillips
Keyword(s):  
Larval Development ◽  
Laboratory Tests ◽  
Mixed Population ◽  
Oriental Fruit Moth ◽  
Larval Instars ◽  
Influence Of Temperature ◽  
Grapholitha Molesta ◽  
Influence Of Temperature On

AbstractLaboratory tests, at constant temperatures, were conducted to evaluate quantitatively the influence of temperature on development of the Oriental fruit moth, Grapholitha molesta (Busck). The results showed that at the highest temperature (30°C) some larvae had four instars and some had five, indicating a mixed population. Fifth instar larvae developed only at the highest temperature (30°C) where larval development was also most rapid. It can, therefore, be assumed that the Oriental fruit moth has four distinct larval instars when reared in the laboratory at 15°–24 °C.

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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