POLYPLOIDY IN PARTHENOGENETIC CURCULIONIDAE

Genetic polymorphism and evolution in parthenogenetic animals. I. Polyploid curculionidae.

The genetic variability at enzyme loci in different triploid and tetraploid parthenogenetic weevil populations has been elucidated by starch gel electrophoresis. The overall genotype of individual weevils belonging to different populations has been determined for over 25 loci. The results are compared with those obtained for diploid bisexual races of either the same or closely related species. ...

AntennAl sensillA of pArthenogenetic And bisexuAl Lissorhoptrus oryzophiLus (coleopterA: curculionidAe)

Antennal sensilla were compared in parthenogenetic females and bisexual adults of rice water weevil, Lissorhoptrus oryzophilus Kuschel (coleoptera: curculionidae), using scanning electron micrographs. the antenna of parthenogenetic females and of both sexes of bisexual reproductive weevils consisted of the scape, pedicel, and 6 flagellar segments. females, regardless of mode of reproduction, ha...

Genetic constitution of parthenogenetic form of Polydrusus inustus (Coleoptera: Curculionidae)--hints of hybrid origin and recombinations.

Asexual reproduction among insects may arise spontaneously, as a result of infectious agents or hybridization between phylogenetically distinct organisms. Polyploidy, which may be the result of auto- or allopoliploidization (also associated with hybridization), is often connected with parthenogenesis. However, all studied parthenogens of weevils were apomictic, rare meiotic stages have been obs...

Polyploidy

Polyploidy is defined as an increase in genome DNA content. Throughout the plant and animal kingdoms specific cell types become polyploid as part of their differentiation programs. When this occurs in subsets of tissues within an organism it is termed somatic polyploidy, because it is distinct from the increase in ploidy that is inherited through the germline and present in every cell type of t...

Dermatoglyphs in human polyploidy.