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==Physical appearance== | |||
“Wildtype fruit flies are yellow-brown, with brick-red eyes and transverse black rings across the abdomen. They exhibit sexual dimorphism: females are about 2.5 millimeters (0.098 in) long; males are slightly smaller with darker backs. Males are easily distinguished from females based on colour differences, with a distinct black patch at the abdomen, less noticeable in recently emerged flies, and the sexcombs (a row of dark bristles on the tarsus of the first leg).”(wikipedia) | |||
<gallery> | |||
File:Biology_Illustration_Animals_Insects_Drosophila_melanogaster.svg.png|Female (left) and male (right). Source: Wikimedia | |||
</gallery> | |||
==Lifecycle and reproduction== | ==Lifecycle and reproduction== | ||
“The life cycle of this insect has four stages: fertilized egg, larva, pupa, and adult.”(wikipedia) | “The life cycle of this insect has four stages: fertilized egg, larva, pupa, and adult.”(wikipedia) | ||
“The ''Drosophila melanogaster'' lifespan is about 30 days at 29 °C. .. The shortest development time (egg to adult), 7 days, is achieved at 28 °C .. Under ideal conditions, the development time at 25 °C is 8.5 days, at 18 °C it takes 19 days and at 12 °C it takes over 50 days .. Females lay some 400 eggs (embryos), about five at a time, into rotting fruit or other suitable material such as decaying mushrooms .. The eggs, which are about 0.5 mm long, hatch after 12–15 hours .. The resulting larvae grow for about 4 days (at 25 °C) while molting twice (into second- and third-instar larvae), at about 24 and 48 h after hatching. During this time, they feed on the microorganisms that decompose the fruit, as well as on the sugar of the fruit itself. The mother puts feces on the egg sacs to establish the same microbial composition in the larvae's guts which has worked positively for herself.”(wikipedia) | “The ''Drosophila melanogaster'' lifespan is about 30 days at 29 °C. .. The shortest development time (egg to adult), 7 days, is achieved at 28 °C .. Under ideal conditions, the development time at 25 °C is 8.5 days, at 18 °C it takes 19 days and at 12 °C it takes over 50 days .. Females lay some 400 eggs (embryos), about five at a time, into rotting fruit or other suitable material such as decaying mushrooms .. The eggs, which are about 0.5 mm long, hatch after 12–15 hours .. The resulting larvae grow for about 4 days (at 25 °C) while molting twice (into second- and third-instar larvae), at about 24 and 48 h after hatching. During this time, they feed on the microorganisms that decompose the fruit, as well as on the sugar of the fruit itself. The mother puts feces on the egg sacs to establish the same microbial composition in the larvae's guts which has worked positively for herself.”(wikipedia) | ||
==Model organism== | ==Model organism== | ||