Thelytoky
Type of parthenogenesis in which females are produced from unfertilized eggs / From Wikipedia, the free encyclopedia
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Thelytoky (from the Greek thēlys "female" and tokos "birth") is a type of parthenogenesis and is the absence of mating and subsequent production of all female diploid offspring as for example in aphids. Thelytokous parthenogenesis is rare among animals and reported in about 1,500 species, about 1 in 1000 of described animal species, according to a 1984 study.[1] It is more common in invertebrates, like arthropods, but it can occur in vertebrates, including salamanders, fish, and reptiles such as some whiptail lizards.
Thelytoky can occur by different mechanisms, each of which has a different impact on the level of homozygosity. It is found in several groups of Hymenoptera, including Apidae, Aphelinidae, Cynipidae, Formicidae, Ichneumonidae, and Tenthredinidae.[2] It can be induced in Hymenoptera by the bacteria Wolbachia and Cardinium.[3]