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Paternal inheritance in mealybugs (Hemiptera: Coccoidea: Pseudococcidae).
MedLine Citation:
PMID:  25091548     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Mealybugs have a haplodiploid reproduction system, with paternal genome elimination (PGE); the males are diploid soon after fertilization, but during embryogenesis, the male paternal set of chromosomes becomes heterochromatic (HC) and therefore inactive. Previous studies have suggested that paternal genes can be passed on from mealybug males to their sons, but not necessarily by any son, to the next generation. We employed crosses between two mealybug species-Planococcus ficus (Signoret) and Planococcus citri (Risso)-and between two populations of P. ficus, which differ in their mode of pheromone attraction, in order to demonstrate paternal inheritance from males to F2 through F1 male hybrids. Two traits were monitored through three generations: mode of male pheromone attraction (pherotype) and sequences of the internal transcribed spacer 2 (ITS2) gene segment (genotype). Our results demonstrate that paternal inheritance in mealybugs can occur from males to their F2 offspring, through F1 males (paternal line). F2 backcrossed hybrid males expressed paternal pherotypes and ITS2 genotypes although their mother originated through a maternal population. Further results revealed other, hitherto unknown, aspects of inheritance in mealybugs, such as that hybridization between the two species caused absence of paternal traits in F2 hybrid females produced by F1 hybrid females. Furthermore, hybridization between the two species raised the question of whether unattracted males have any role in the interactions between P. ficus and P. citri.
Authors:
Hofit Kol-Maimon; Zvi Mendel; José Carlos Franco; Murad Ghanim
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-5
Journal Detail:
Title:  Die Naturwissenschaften     Volume:  -     ISSN:  1432-1904     ISO Abbreviation:  Naturwissenschaften     Publication Date:  2014 Aug 
Date Detail:
Created Date:  2014-8-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0400767     Medline TA:  Naturwissenschaften     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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