Experiments on a mealybug infesting apple and a mealybug infesting catalpa

1. The developing time of the mealybug from catalpa exceeded that of the mealybug from apple. 2. In no experiment did cross-breeding of the mealybug from apple and from catalpa take place. 3. Each mealybug was able to live successfully on both hosts. 4. The parasites, Clausenua purpurea Ishii, from the mealybugs from catalpa parasitized the mealybugs from apply failed to parasitize mealybugs from catalpa. 5. Some female mealybugs may overwinter in the adult form if fully protected from the weather and if the temperature does not drop below 45 °F. 6. Under optimum conditions, several mealybugs lived exceptionally long lives, passing a maximum of 145 days. 7. A color differentiation of the females of the two mealybugs was noticeable.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Entomology

Department dc:contributor.department

Entomology

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1941

Author dc:creator

• Murrill, R. D.

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-02232010-020043

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/41248