title: Morphological mutant in the entomopathogenic nematode, Heterorhabditis bacteriophora.
abstract: Heterorhabditis bacteriophora is an entomopathogenic nematode that has potential as a biological control agent. As a first step in the genetic analysis of this nematode, we induced and isolated a short nematode (dumpy) from the F2 progeny of an EMS mutagenized nematode. Phenotypically, the dumpy adult is 60% shorter than the wild type. There is almost no longitudinal growth after the infective juvenile stage. Dumpy is completely recessive with 100% penetrance and uniform expressivity. When F1 progeny were allowed to self, F2 progeny segregated wild: dumpy in a 15:1 ratio (chi 2 = 0.634, .5 > P > .2). This dumpy mutation (Rhdpy) complements another dumpy mutation isolated in Israel and is the second gene known for this species.
authors.affiliation: Department of Biological Science, Rutgers State University of New Jersey, Piscataway.
authors.forename: F R
authors.initials: FR
authors.lastname: Rahimi
authors.forename: T R
authors.initials: TR
authors.lastname: McGuire
authors.forename: R
authors.initials: R
authors.lastname: Gaugler
mesh_terms: D000818:Animals; D003433:Crosses, Genetic; D005020:Ethyl Methanesulfonate; D005260:Female; D005816:Genetic Complementation Test; D008297:Male; D009036:Moths / Q000469:parasitology; D009154:Mutation; D010572:Pest Control, Biological; D017172:Rhabditoidea / Q000235:genetics*
chemical_list: D005020:Ethyl Methanesulfonate