Estimations of number of active loci,dominance and heritability in polygenic inheritance of gregarious behavior inMuscidifurax raptorellus [Hymenoptera: Pteromalidae] |
| |
Authors: | E F Legner |
| |
Institution: | (1) Department of Entomology, University of California, 92521-0314 Riverside, CA |
| |
Abstract: | Estimates of the minimum number of genetic loci governing expressions of gregarious oviposition inMuscidifurax raptorellus Kogan & Legner were enabled by the verification of recombinant males, which were secured from virgin hybrid females, formed
by crossing cohorts from solitary and gregarious populations. Examinations of parasitization behavior in female progeny that
had F1 male fathers indicated the presence of hybrids among the males. Estimates of gene number, made on the basis of variances
in P1, F1, F2 and backcross progeny, and by observing behavior in second and third order backcrosses, ranged from two to 19, with most
between two and five. However, backcrossing data suggested that at least eight loci were actively segregating for this characteristic.
Semi-dominance of the solitary trait (D=0.63 to 0.84), and unequal gene effects probably caused these gene estimated to be
lower than the actual number. Estimates of the coefficient of heritability, in the broad sense based on parental and F1 and F2 variances indicated that variability of gregarious behavior in the experimental environment was influenced >60% by genotypic
factors, offspring-parent regression analyses gave estimates >38%.
|
| |
Keywords: | Hymenoptera parasitoids recombinant males polygenes |
本文献已被 SpringerLink 等数据库收录! |
|