X chromosome influences sperm length in the stalk-eyed fly Cyrtodiopsis dalmanni
نویسندگان
چکیده
منابع مشابه
Fitness effects of X chromosome drive in the stalk-eyed fly, Cyrtodiopsis dalmanni.
Sex-ratio (SR) males produce predominantly female progeny because most Y chromosome sperm are rendered nonfunctional. The resulting transmission advantage of XSR chromosomes should eventually cause population extinction unless segregation distortion is masked by suppressors or balanced by selection. By screening male stalk-eyed flies, Cyrtodiopsis dalmanni, for brood sex ratio we found unique S...
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Recent theoretical and empirical work has suggested that the X chromosome may play a special role in the evolution of sexually dimorphic traits. We tested this idea by quantifying sex chromosome influence on male relative eyespan, a dramatically sexually selected trait in the stalk-eyed fly, Cyrtodiopsis dalmanni. After 31 generations of artificial sexual selection on eyespan:body length ratio,...
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In stalk-eyed flies (Diopsidae), the eyes are positioned at the end of rigid peduncles protruding laterally from the head. Sexual selection for eye span in male Cyrtodiopsis dalmanni results in eye span that exceeds body length and exceeds the eye span of females. We studied whether the twofold higher moment of inertia (MOI) of the male head results in a reduced head rotation velocity during tu...
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Sex chromosome meiotic drive has been suggested as a cause of several evolutionary genetic phenomena, including genomic conflicts that give rise to reproductive isolation between new species. In this paper we present a population genetic analysis of X chromosome drive in the stalk-eyed fly, Teleopsis dalmanni, to determine how this natural polymorphism influences genetic diversity. We analyzed ...
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Title of Document: REPRODUCTIVE ISOLATION AND X CHROMOSOME MEIOTIC DRIVE IN CYRTODIOPSIS STALK-EYED FLIES. Sarah J. Christianson, Doctor of Philosophy, 2008 Directed By: Professor Gerald Wilkinson, Department of Biology Haldane’s rule states that when one sex of hybrids shows sterility or inviability it tends to be the heterogametic sex. This pattern is considered a fundamental law of speciatio...
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ژورنال
عنوان ژورنال: Heredity
سال: 2007
ISSN: 0018-067X,1365-2540
DOI: 10.1038/sj.hdy.6800963