Cyrtodiopsis whitei

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WebNov 29, 2013 · In Cyrtodiopsis whitei, two spermathecal ducts originate close together from a short pouch in the dorsal vagina wall (genital papilla) and bear apically single and double spermathecae, respectively. Kotrba ( 1993 ) reports that, during mating, the tip of a rod-shaped process of the male aedeagus enters, and possibly serves to pry open, the ... Webstalk-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,

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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 … WebJun 28, 2008 · Spermatophores occur in four out of five investigated genera, in Cyrtodiopsis, Diasemopsis, Teleopsis, and in Sphyracephala, which is positioned close to the base of the family. Within the genus Diopsis the spermatophore is subject to reduction. Spermatophore size and copulation duration are positively correlated across the species. florida bodybuilding shows 2023

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WebCyrtodiopsis 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 subjected to ... WebChytridiomycosis is an infectious disease of amphibians caused by the fungus Batrachochytrium dendrobatidis (Bd).It an emerging disease that is significantly … WebMay 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. greattypecaptcha

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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 … great txWebBy means of field observations and laboratory experiments 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. greattypecaptcha.top removal

"WebChytridiomycosis is a disease caused by two pathogenic chytrid fungi, Batrachochytrium dendrobatidis (Bd) and B. salamandrivorans (Bsal). It infects the skin of numerous … " - Cyrtodiopsis whitei

Cyrtodiopsis whitei

WebSystematics and ecology of Cyrtodiopsis whitei (Curran, 1936), initially described in brief from a tropical dry deciduous forest in eastern India as Diopsis whitei, remained obscure … 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. …

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WebSperm 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 … WebAbstract. In the stalk-eyed fly Cyrtodiopsis whitei (Diopsidae; Diptera), the relatively long optic nerve develops within the tight lumen of a very short eyestalk. Axonal growth is …

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. 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 ...

WebGenetic analyses of Cyrtodiopsis dalmanni, the sister species to C. whitei (Wilkinson et al., 1998a), have demonstrated that an X-linked factor causes males to produce … WebCyrtodiopsis 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: …

WebCyrtodiopsis whitei (Diopsidae) from Malaysia is one of the stalk-eyed flies which show a marked sexual dimorphism ofeye spans. The particularly long eye stalks of male flies are to be regarded as an epigamic feature. Field observations show the males' eye spans to be correlated with the possession of a harem and with that harem's size. The question …

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 … florida body camera statuteWebCyrtodiopsis 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. … florida bofa routing numberWebRecent 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 ... great tye manorWebHere we describe how sperm development in the stalk-eyed fly, Cyrtodiopsis whitei, influences progeny sex proportion, in order to determine if a common developmental … greattypecaptcha.top virusWebeyed 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 a•ect the degree of segregation distortion in some Drosophila, we tested ﬂies from six to 26 weeks of age. greattypecaptcha.top entfernenhttp://drosophila.biology.kent.edu/users/plorch/LorchPdfs/Lorchetal1993.pdf greattypecaptcha 削除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 greattypecaptcha.top とは