Cyrtodiopsis whitei

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WebNov 1, 1997 · We report results of genetic analyses that demonstrate that extreme female-biased sex ratios in two sister species of stalk-eyed flies, Cyrtodiopsis dalmanni and C. … WebHere we describe how sperm development in the stalk-eyed fly, Cyrtodiopsis whitei, influences progeny sex proportion, in order to determine if a common developmental mechanism could cause meiotic drive in these distantly related taxa. Because age has been found to affect the degree of segregation distortion in some Drosophila, we tested flies …

Eye stalks or no eye stalks: A structural comparison of pupal ...

Webin sperm precedence are not well understood. In the stalk-eyed ﬂy,Cyrtodiopsis whitei (Diptera, Diopsidae), sperm precedence is inﬂuenced by the presence of sex chromosome meiotic drive. When drive-carrying males compete with non-driving males for fertilizations within a female, the number of progeny sired by drive males is signiﬁcantly fewer WebRecent molecular studies have shown that the genera Teleopsis and Cyrtodiopsis are in fact paraphyl-etic with respect to each other, form a monophyletic group and should be considered as a single genus (Baker ... Diopsis whitei Curran 1936: 1. Diagnosis: IVB length up to 4.5 times as long as width of eye stalk in the middle. Thorax pollinose on ... tth maths

How stalk-eyed flies eye stalk-eyed flies: Observations and

WebCyrtodiopsis whitei is a species of Stalk-Eye Fly from the family of Diopsidae. Overview Photos Videos Map Share Subscribe Play More Stalk-Eyed Fly Photographed in South … WebNov 1, 2011 · For example, in the stalk-eyed fly Cyrtodiopsis whitei, copulation duration exhibits a bimodal distribution with peaks at 10 and 50 s, and sperm are not. Acknowledgments. We thank Dr Zenobia Lewis for invaluable comments and English editing of the manuscript and Mr. Ushio Koizumi for useful advice on collecting and rearing of … Webcyrtodiopsis whitei short copulation copulation duration direct result non-irradiated male artificial inter-ruptions indicated sperm solitary male temporary mating plug field short … tth means

Portrait of an Asian stalk-eyed fly SpringerLink

Artificial sexual selection alters allometry in the stalk-eyed fly ...

WebCryptotis. The genus Cryptotis is a group of relatively small shrews with short ears, which are usually not visible, and short tails, commonly called small-eared shrews. They have … Webmonomorphic eye stalks are plesiomorphic in Cyrtodiopsis. Observations of multiple copulations by females in paired-choice mating chambers indicated that female C whitei and C. dalmanm exhibit relative preferences for longer eye stalks such that preference intensity increases linearly with the difference in eye stalk length between males. phoenix concrete stampingWebMay 14, 2001 · In contrast to D. melanogaster, C. whitei shows a small, neck-like constriction between the optic lobes and the rest of the brain. By 20% of pupal development, the divergence is more apparent, and by 30%, the future eye stalk and optic nerve of C. whitei has started to form. phoenix condo in gulf shores alabama

"WebJan 15, 1998 · The frequency of biased sex ratio was 36% in C. whitei (n = 75 sires, 10,395 progeny; Fig. 1a) after about five generations in culture and 16% in C. dalmanni (n = 93 sires, 10,695 progeny; Fig. 1a ... " - Cyrtodiopsis whitei

Cyrtodiopsis whitei

Sperm transfer by spermatophore in Diptera: new results from …

http://drosophila.biology.kent.edu/users/plorch/LorchPdfs/Lorchetal1993.pdf WebSep 1, 1983 · Cyrtodiopsis whitei Curran lives in the tropical rainforest of Malaysia. We describe a number of aspects of its morphology and biology, some functional properties of the eye, and the ritualized fights between males, by which harems are acquired. The evolutionary significance of the eyestalks is discussed: they represent structures …

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Webexperiments on the Malaysian stalk-eyed fly Cyrtodiopsis whitei we examined the consequences of variation in cop- ulation duration for sperm competition. In this sexually dimorphic species over 90% of all copulations occur in nocturnal aggregations with from one to four males and up to 24 females. WebApr 20, 2001 · To examine the pupal development of the brain, we used Bodian staining in the stalk‐eyed fly, Cyrtodiopsis whitei and compared it with development in the fruit fly, Drosophila melanogaster, which serves as a “typical” dipteran example without eye stalks. Early in pupal development, the neuropil organization of the two species is fairly ...

WebCyrtodiopsis whitei: Eye stalk showing three segments of prominently towards the subapical band in the median antenna and a long bristle, arista, arising from the third segment. … WebApr 14, 2009 · Summary Artificial sexual selection alters allometry in the stalk-eyed fly Cyrtodiopsis dalmanni (Diptera: Diopsidae) Published online by Cambridge University Press: 14 April 2009 Gerald S. Wilkinson Article Metrics Save PDF Share Cite Rights & Permissions Summary HTML view is not available for this content.

WebChytridiomycosis is an infectious disease of amphibians caused by the fungus Batrachochytrium dendrobatidis (Bd).It an emerging disease that is significantly … WebHere we describe how sperm development in the stalk-eyed fly, Cyrtodiopsis whitei, influences progeny sex proportion, in order to determine if a common developmental …

WebCyrtodiopsis is a genus of stalk-eyed flies in the family Diopsidae. Species. Cyrtodiopsis africana Shillito, 1940 (Uganda, Congo) Cyrtodiopsis concava Yang & Chen, 1998 …

Web1. The Malayan stalk-eyed flyCyrtodiopsis whitei, of the family Diopsidae, exhibits sexual dimorphism in that the eyestalk span of the males exceeds the length of the body, whereas that of the females, which have shorter bodies on the average, is smaller than the body length. The ratio of the sexes in a population departs significantly from 1∶1; in samples of … phoenix condo rentals gulf shoresWebChytridiomycosis is a disease caused by two pathogenic chytrid fungi, Batrachochytrium dendrobatidis (Bd) and B. salamandrivorans (Bsal). It infects the skin of numerous … tth mindtreeWebCyrtodiopsis whitei. NCBI BLAST name: flies Rank: species ... (Diptera) based on morphological and DNA sequence data" Insect Syst. Evol. 33: 325-336 (2002) [Cyrtodiopsis synonymized with Teleopsis] External Information Resources (NCBI LinkOut) LinkOut: Subject: LinkOut Provider: Cyrtodiopsis whitei Curran, 1936: … tthm formationWebSperm development, age and sex chromosome meiotic drive in the stalk-eyed fly, Cyrtodiopsis whitei. The cytological basis of X chromosome meiotic drive or sex ratio … tthm pantry listWebstalk-eyed fly, Cyrtodiopsis dalmanni, and the trait is relative male eye span, i.e. the ratio of the distance between the tips of a male's eyes and his body length (Fig. 1). Sexual dimorphism in eye span is pronounced in this and the sympatric congener whitei,, C. because the slope of the regression of eye span on body length, tthm holding timesWebMalay species Cyrtodiopsis whitei (Curran), and first observations on two of the Bruneian species, Teleopsis pallifacies (Feijen) and Teleopsis belalongensis, reveal a similar behaviour: the males display fighting activity on the sleeping sites. Figures 1 to 3 show the allometric data of ... tth medicineWebJul 1, 2001 · Cyrtodiopsis whitei males are not fertile until at least three weeks after eclosion and can survive for six months or more in the laboratory and field ( Wilkinson & Dodson, 1997 ). Consequently,... tthm sample bottle