The genetic basis of pupal color dimorphism in Papilio polyxenes and its maintenance by natural selection

A survey of the genetic variation in the ability to produce brown pupae was conducted using 23 broods reared from wild caught females. In addition a selection experiment was designed to investigate the genetic basis of the dimorphism. It was concluded that the genetic basis of the dimorphism is a threshold trait with quantitative genetic variation underlying the two phenotypes of green and brown pupal color. It was further concluded that the dimorphism is maintained in nature by weak stabilizing selection, thus explaining the occurrence of mismatches in pupal and background color.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Zoology

Department dc:contributor.department

Zoology

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1976

Author dc:creator

• Hazel, Wade Nelson

Chair dc:contributor.committeechair

• West, David A.

Committee members dc:contributor.committeemember

• Siegel, Paul B.
• Cochran, Donald G.
• Paterson, Robert A.

• genetic variation

Statement dc:rights

• In Copyright

Licence dc:rights.uri

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

Dc Identifier Other

etd-09242008-113823

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/35173