Genetics of interspecific hybridization in the Triseriatus and Zoosophus groups of the Aedes (Protomacleaya) (Diptera: Culicidae).Annals of the Entomological Society of America (1990)
AbstractInterspecific hybridization was used to examine the genetics of species divergence and phylogeny of mosquitoes in the Triseriatus and Zoosophus groups of Aedes (Protomacleaya). Aedes zoosophus Dyar & Knab exhibited a relatively high degree of reproductive compatibility with Triseriatus group species. Crosses between A. zoosophus and A. triseriatus (Say) produced fertile female and sterile, intersex, male progeny. Crosses between A. zoosophus females and A. brelandi Zavortink males were sterile with no egg embryonation observed. Crosses between A. zoosophus males and A. brelandi females and reciprocal crosses between A. zoosophus and A. hendersoni (Cockerell) produced sterile, intersex female and male progeny. This represents the first record of intersex females of hybrid origin in mosquitoes. One paracentric inversion separates A. zoosophus from the species in the Triseriatus group. Chiasmata frequencies are reduced in the interspecific hybrids and other meiotic abnormalities are observed. Three morphological characters differentiating A. zoosophus from Triseriatus group species are controlled by four genetic loci. White scales (Ws) exhibits recessive epistasis over abdominal banding (Ab) and banded tarsi (Bt). These three loci are linked on linkage group 3; copper thorax (co) is on linkage group 2. Dendrograms based upon indices of genetic similarity as reflected by the chiasmata frequency and reproductive compatibility are presented and compared with allozyme and morphological data.
- evolutionary genetics,
- hybrid disgenesis,
Citation InformationDavid B Taylor. "Genetics of interspecific hybridization in the Triseriatus and Zoosophus groups of the Aedes (Protomacleaya) (Diptera: Culicidae)." Annals of the Entomological Society of America Vol. 83 Iss. 6 (1990)
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