Cyrtodiopsis whitei
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 …
Cyrtodiopsis whitei
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WebChytridiomycosis is a disease caused by two pathogenic chytrid fungi, Batrachochytrium dendrobatidis (Bd) and B. salamandrivorans (Bsal). It infects the skin of numerous … WebJul 26, 2024 · Systematics 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 for want of...
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 … WebChytridiomycosis is an infectious disease of amphibians caused by the fungus Batrachochytrium dendrobatidis (Bd).It an emerging disease that is significantly …
WebBy 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. 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.
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 ...
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 ... imogen cunningham the dreamWebJun 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. list of zaddieshttp://drosophila.biology.kent.edu/users/plorch/LorchPdfs/Lorchetal1993.pdf imogen cunningham photos of martha grahamWebMalay 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 ... imogene a davis middletown ohioWebcyrtodiopsis whitei short copulation copulation duration direct result non-irradiated male artificial inter-ruptions indicated sperm solitary male temporary mating plug field short … imogen cunningham photography workWebCyrtodiopsis 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 ... list of yu gi oh decksWebAbstract. 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 … list of zaffe in lebanon