Oviposition Behavior and Temperature Effects on Egg Development of the Southern Pine Cone worm Dioryctria amatella (Lepidoptera: Pyralidae)

1984 ◽  
Vol 13 (6) ◽  
pp. 1624-1626 ◽  
Author(s):  
James L. Hanula ◽  
Gary L. Debarr ◽  
C. Wayne Berisford
Keyword(s):  
Temperature Effects ◽  
Oviposition Behavior ◽  
Southern Pine ◽  
Egg Development ◽  
Pine Cone ◽  
Lepidoptera Pyralidae

CONTACT TOXICITY OF 17 INSECTICIDES TO LARVAE OF DIORYCTRIA AMATELLA (LEPIDOPTERA: PYRALIDAE)

1980 ◽  
Vol 112 (5) ◽  
pp. 521-523 ◽  
Author(s):  
Gary L. DeBarr ◽  
Vicki H. Fedde
Keyword(s):  
United States ◽  
North American ◽  
Laboratory Tests ◽  
Insect Pests ◽  
Southern United States ◽  
Contact Toxicity ◽  
Southern Pine ◽  
Lepidoptera Pyralidae

Moths of the genus Dioryctria are important insect pests of North American conifers (Baker 1972). Of the species that occur in the southern United States, e.g., D. clarioralis (Walker), D. disclusa (Heinrich), and D. ebeli Mutuura and Munroe, the southern pine coneworm, Dioryctria amatella (Hulst), is the most destructive (Ebel et al. 1975). Our paper reports the results of laboratory tests aimed at determining the relative toxicities of commercially available or promising experimental insecticides to D. amatella larvae.

scholarly journals Temperature effects on Trichogramma pretiosum Riley and Trichogrammatoidea annulata De Santis

2003 ◽  
Vol 46 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Arlei Maceda ◽  
Celso L Hohmann ◽  
Honório R. dos Santos
Keyword(s):  
Temperature Effects ◽  
Entire Temperature Range ◽  
Temperature Threshold ◽  
Trichogramma Pretiosum ◽  
Degree Days ◽  
Parasitoid Species ◽  
Influence Of Temperature ◽  
Anagasta Kuehniella ◽  
Influence Of Temperature On ◽  
Lepidoptera Pyralidae

The influence of temperature on lifetime attributes of Trichogramma pretiosum Riley and Trichogrammatoidea annulata De Santis (Hymenoptera: Trichogrammatidae) was evaluated at four constant temperatures (15, 20, 25, and 30º C), RH 70 ± 10%, photophase 14 h. Anagasta kuehniella (Lepidoptera: Pyralidae) eggs were used as hosts. Developmental times of both parasitoid species were similar when exposed to 20, 25, or 30º C. T. annulata, however, developed slightly faster than T. pretiosum at 15º C. Emergence rates of both species were above 89%. The temperature threshold for T. pretiosum and T. annulata was 11º C and the number of degree-days required for their development was 126.9 and 122.3, respectively. Parasitization was maximal at 25º C. T. annulata, however, parasitized significantly more hosts than T. pretiosum in the entire temperature range. Temperature had no effect in brood size.T. annulata progeny consisted predominantly of males, except at 15º C, whereas in T.pretiosumitconsisted predominantly of females, except at 30º C. Parental females lived longer than males.

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