Courtship anomalies caused by doublesex mutations in Drosophila melanogaster.
Courtship anomalies caused by doublesex mutations in Drosophila melanogaster.
复制标题
果蝇双性突变引起的求偶异常。
DOI：
10.1093/genetics/143.1.331
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发表时间：
1996
期刊：
影响因子：
3.3
通讯作者：
Hall,JC
中科院分区：
文献类型：
--
作者：
Villella,A;Hall,JC
研究了性别威慑基因双性(Dsx)在果蝇交配中的作用及其对果蝇交配的影响。在原始dsx型单倍体果蝇纯合的异常雄性行为背景下，考虑到性别特异性肌肉不受该基因座遗传变异的影响，对几种生殖行为的分析和对遗传背景效应的控制表明，XY dsx型突变体在追求雌性的意愿方面受到了损害。当他们上法庭时，某些行为行为是正常的，包括求爱歌曲的成分。然而，这些突变体从未发出求偶嗡嗡声。成熟的XY dsx苍蝇会引起异常高的求偶水平；这种情况的发生仅仅是因为想象发育的延迟，这在实验上是不成立的。目前的分析调和了两个表面上相互矛盾的报告，这些报告涉及这种突变类型的求爱刺激特性。这些实验还发现了一种新的行为异常：dsx突变导致染色体上的男性以异常高的水平向其他男性求爱。这些结果从双性交对成年果蝇内部组织的影响的角度进行了讨论，双性交参与了雄性和雌性样元素的求偶、生殖信息素的产生或这些因素的组合的触发和神经控制。
The role played by the sex-deterrnining genedoublesex(dsx) and its influence on Drosophila courtship were examined. Against a background of subnormal male-like behavior that is reported to be an attribute of haplo-Xflies homozygous for the originaldsxmutation, and given that a sex-specific muscle is unaffected by genetic variation at this locus, analyses of several reproductive behaviors and control for genetic background effects indicated thatXY dsxmutants are impaired in their willingness to court females. When they did court, certain behavioral actions were normal, including components of courtship song. However, these mutants never produced courtship humming sounds. MatureXY dsxflies elicited anomalously high levels of courtship; that this occurs merely because of a delay in imaginal development was experimentally discounted. The current analysis reconciled two ostensibly conflicting reports involving the courtship-stimulating qualities of this mutant type. Such experiments also uncovered a new behavioral anomaly:dsxmutations caused chromosomal males to court other males at abnormally high levels. These results are discussed from the perspective ofdoublesex'sinfluence on internal tissues of adult Drosophila involved in the triggering and neural control of male- and female-like elements of courtship, reproductive pheromone production, or a combination of such factors.