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Population variation in Raoiella indica (Acari: Tenuipalpidae) evaluated through morphological and molecular analysis in Venezuela

Abstract:

Chaetotactic and molecular variability in Raoiella indica population collected in Venezuela on Adonidia merrillii, Cocos nucifera, Musa sp., Roystonea oleracea and Washingtonia sp. from several localities in Aragua, Carabobo, Falcón, Nueva Esparta, Sucre, Yaracuy and Zulia states were evaluated and compared to one population from Florida (USA). Idiosoma length and width, length and base distance in dorsal idiosomal setae were evaluated in adult females from each host plant or location. Genetic variability was evaluated by RAPD-PCR using primers OPA10, OPA14, OPL05, OPMO1, OPO01 and OPP17. Principal Component Analysis showed that R. indica populations collected on C. nucifera or Musa sp. were more homogenous than those collected on A. merrillii or Washingtonia sp. Both, morphological and genetic analysis showed that R. indica populations from A. merrilli or Washingtonia sp. are different from those of the remaining host plants evaluated. © 2014, Sociedad Venezolana de Entomología.