Strain distribution of alfalfa weevil (Coleoptera: Curculionidae) in an intergrade zone.
Strain distribution for the alfalfa weevil, Hypera postica (Gyllenhal), was determined for the five major alfalfa-growing regions of New Mexico. Mitochondrial DNA from field-collected weevils at each location was digested and sequenced to differentiate among strains. Eastern, Egyptian, and western strains were recovered, along with a population not matching any known strain. The majority of sites examined had populations of two strains intermingled within a field. This is the first confirmation of the presence of all three strains within the same geographic region. Possible implications for alfalfa weevil management are discussed.
Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM 88003, USA.
C Scott
CS
Bundy
Paul F
PF
Smith
L Mike
LM
English
Dennis
D
Sutton
Steve
S
Hanson
D000818:Animals; D004272:DNA, Mitochondrial / Q000235:genetics; D003710:Demography; D017344:Genes, Insect / Q000235:genetics; D000455:Medicago sativa / Q000469:parasitology; D009516:New Mexico; D048889:Weevils / Q000145:classification* / Q000235:genetics*
D004272:DNA, Mitochondrial