澳大利亚绵羊绿蝇 Lucilia cuprina 的雄性交叉遗传与遗传性别鉴定系统。

Male crossing over and genetic sexing systems in the Australian sheep blowfly Lucilia cuprina.

作者信息

Foster G G, Weller G L, Clarke G M

机构信息

CSIRO Division of Entomology, Canberra, Australia.

出版信息

Heredity (Edinb). 1991 Dec;67 ( Pt 3):365-71. doi: 10.1038/hdy.1991.100.

DOI:10.1038/hdy.1991.100

PMID:1774192

Abstract

Field-female killing (FK) systems based on deleterious mutations and Y-autosome translocations are being evaluated for genetic control of the Australian sheep blowfly, Lucilia cuprina. Experience during field trials has shown that mass-reared colonies of FK strains are subject to genetic deterioration, caused mainly by genetic recombination in males. A previous study found higher male recombination frequencies in two Y-linked translocation strains than in chromosomally normal males. However, the results of the present study indicate that breakage of the Y chromosome is neither sufficient nor necessary for increased levels of male recombination. The frequency of male recombination appears to be unrelated to the presence of specific chromosome rearrangements.

摘要

基于有害突变和Y-常染色体易位的野外雌性致死（FK）系统正在被评估用于澳大利亚羊绿蝇（Lucilia cuprina）的遗传控制。田间试验的经验表明，FK品系的大规模饲养群体容易发生遗传退化，主要是由雄性中的基因重组引起的。先前的一项研究发现，两个Y连锁易位品系中的雄性重组频率高于染色体正常的雄性。然而，本研究的结果表明，Y染色体的断裂对于增加雄性重组水平既不是充分条件也不是必要条件。雄性重组的频率似乎与特定染色体重排的存在无关。