Ecological studies and pesticide response of <i>Evergestis rimosalis</i> (Guenee) (Lepidoptera: Pyralidae) and its parasitoid <i>Cotesia orobenae</i> Forbes (Hymenoptera: Braconidae)

The effects of temperature on emergence, development, oviposition, longevity and fecundity of <i>Cotesia orobenae</i> Forbes (Hymenoptera: Braconidae) were studied. Development time of parasitoid pupae decreased as temperature increased to 35°C. Temperatures between 20 and 25°C were most suitable for parasitoid development, oviposition and fecundity. Longevity was significantly affected by temperature, and was greatest between I5 and 20°C for both sexes. Sex ratios obtained from virgin females, females mated once and females exposed to multiple mating were compared. Virgin females produced only males, those with single or multiple mating produced more females than males. <i>Cotesia orobenae</i> exposed to five densities of third instar cross-striped cabbageworm, <i>Evergestis rimosaiis</i> (Guenee) (Lepidoptera: Pyralidae), for 24 h showed differences in percent parasitization among the treatments. The highest number of parasitoid cocoon masses was obtained from a density of 10 hosts.

Name thesis:degree_name

Ph. D.

Level thesis:degree_level

doctoral

Discipline thesis:degree_discipline

Entomology

Department dc:contributor.department

Entomology

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1995

Author dc:creator

• Acosta-Martinez, Jaime A.

Chair dc:contributor.committeechair

• Kok, Loke T.

Committee members dc:contributor.committeemember

• Baudoin, Antonius B.
• Fell, Richard D.
• Pfeiffer, Douglas G.
• Pienkowski, Robert L.

• Fecundity
• Biological Control
• Pesticide
• Cotesia orobenae
• Evergestis rimosalis
• Parasitoid
• Longevity

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Dc Identifier Other

etd-10262005-101022

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/40206