Facultative parthenogenetic reproduction tests on Porphyrophora tritici Bodenheimer (Hemiptera: Coccomorpha: Margarodidae) from Iran.
عنوان دوره: دومین کنگره بین المللی حشره شناسی ایران
نویسندگان
چکیده
Facultative parthenogenetic reproduction in margarodid scale insects has been reported by various authors and questioned by others. Our objectives were to study whether reproduction in the margarodid scale insect Porphyrophora tritici Bodenheimer from the arid wheat production areas of Kermanshah, Iran, can be parthenogenetic. Considerable numbers of 2nd–instar cysts were collected from infested wheat fields in early to mid-April, 2016, and kept individually isolated in petri-dishes in order to obtain virgin males and females. Each newly emerged adult male was introduced to a newly emerged adult female in a petri-dish. Each male was left with a female for 24 hours, after which the “mated” female was transferred immediataly to a potted wheat seedling. Other adult females were left unmated. Mated and unmated adult females were kept outside in separate cages until early April 2017, under conditions similar to those in arid wheat production areas. There were 20 replicates of each treatment. None of the non-mated females produced offspring whereas 100% of all mated females produced 3-9 crawlers, clearly indicating that these P. tritici did not reproduce parthenogenetically.
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