title: Alcohol dehydrogenase polymorphism in barrel cactus populations of Drosophila mojavensis.
abstract: Starch gel electrophoresis revealed that the alcohol dehydrogenase (ADH-2) locus was polymorphic in two populations (from Agua Caliente, California and the Grand Canyon, Arizona) of cactophilic Drosophila mojavensis that utilize barrel cactus (Ferocactus acanthodes) as a host plant. Electromorphs representing products of a slow (S) and a fast (F) allele were found in adult flies. The frequency of the slow allele was 0.448 in flies from Agua Caliente and 0.659 in flies from the Grand Canyon. These frequencies were intermediate to those of the low (Baja California peninsula, Mexico) and high (Sonora, Mexico and southern Arizona) frequency Adh-2S populations of D. mojavensis that utilize different species of host cacti.
authors.affiliation: Department of Zoology, Arizona State University, Tempe 85287, USA.
authors.forename: S
authors.initials: S
authors.lastname: Cleland
authors.forename: G D
authors.initials: GD
authors.lastname: Hocutt
authors.forename: C M
authors.initials: CM
authors.lastname: Breitmeyer
authors.forename: T A
authors.initials: TA
authors.lastname: Markow
authors.forename: E
authors.initials: E
authors.lastname: Pfeiler
mesh_terms: D000426:Alcohol Dehydrogenase / Q000032:analysis / Q000235:genetics*; D000818:Animals; D001130:Arizona; D002140:California; D004330:Drosophila / Q000201:enzymology* / Q000235:genetics; D004592:Electrophoresis, Starch Gel; D005787:Gene Frequency; D017344:Genes, Insect; D008800:Mexico; D010944:Plants / Q000469:parasitology; D011110:Polymorphism, Genetic
chemical_list: D000426:Alcohol Dehydrogenase