Strong variation in frequencies of male and female determiners between neighboring housefly populations
作者机构：Groningen Institute for Evolutionary Life SciencesFaculty of Science and EngineeringUniversity of GroningenGroningenthe Netherlands
出 版 物：《Insect Science》 (昆虫科学（英文版）)
年 卷 期：2022年第29卷第5期
页 面：1470-1482页
核心收录：
学科分类：0710[理学-生物学] 07[理学] 09[农学]
基 金：supported by China Scholarship Council(CSC)Scholarship no.201706300123 supported by CSC Scholarship no.201606330077
主 题：aneuploidy housefly polymorphic sex determination recombination regional variation sex-determining loci
摘 要：Sex-determination mechanisms evolve rapidly and vary between ***,polymorphic systems are found,like in the *** the dynamics and stability of such systems can provide a better understanding of the evolution of sex-determination *** the housefly,dominant male-determining loci(M)can lie not only on the Y chromosome(M^(Y)),but also on autosomes(M^(A))or the X chromosome(M^(X)).M enforces male development by inhibiting the female-determining gene transformer(tra).A mutant tra allele,tra^(D),is insensitive to M and is a dominant female determiner.M^(Y) prevails at high latitudes and polymorphic M loci together with tra^(D) at low *** get more insight into the stability and frequencies of these sex determiners with mutually exclusive dominance,we investigated 5 regional Spanish *** found strong variation among *** populations with hemizygous M^(III) were found,2 contained homozygous M^(X) with additional hemizygous MI and M^(II) in 1 *** population contained homozygous and hemizygous M^(X) with additionally hemizygous M^(II).All females in populations with homozygous M,had tra^(D),whereas no tra^(D) was found in populations without homozygous *** results indicate locally stable systems may either harbor a single hemizygous M and no tra^(D),corresponding to a male heterogametic system,or homozygous and/or multiple M and heterozygous tra^(D),reminiscent of a female heterogametic *** support that M loci can accumulate in the presence of a dominant female *** migration between populations may contribute to the stability of these systems.
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