What is a small fly How do particularly small flies come about?

Drosophila Drosophila.

vinegar fly

Also known as Pomace Fly.

Drosophilidae Drosophilidae Drosophila insects. About 1,000 species. It is widely used as an indoor and outdoor research material for genetic and evolutionary studies, especially in the field of Drosophila flavus (D

melanogaster) is easy to cultivate. It has a short life history of less than two weeks at room temperature. More genetic information has been collected about fruit flies than any other animal.

The chromosomes of Drosophila, especially the largest chromosomes in the salivary glands of mature larvae, were used to study the basis of genetic characteristics and gene action. Not enough is known about the biology of fruit flies in nature. Some species live on rotten fruits.

Some species live in fungal or fleshy flowers.

Drosophila melanogaster was first described in 1830. It was first used as an experimental object in 1901 by zoologist and geneticist Wilhelm Ernst Cust. Through his phylogenetic studies of fruit flies, he sought to understand the results of multigenerational inbreeding and the phenomenon of crossbreeding from one of these generations.

In 1910, Thomas Hunter Morgan began to breed fruit flies in the laboratory and systematically study them. Since then, many geneticists have begun to use drosophila melanogaster for research and have gained a lot of genetic knowledge, including the chromosomal distribution of genes in the genome of this fly.

Exterior features: small in size, 3 4mm in length. Identification of similar species is difficult, and the main feature is the presence of large red compound eyes.

Ecological habits: Fruit fly insects are also common in the home environment due to their small size and easy to pass through sand windows. On the side of the garbage can or on the fruit that has been stored for a long time, as long as you find many small flies with red eyes, it is a fruit fly; Drosophila larvae are accustomed to breeding on garbage heaps or rotting fruits.

The name "small fly" is not appropriate, because it is no longer the same species as the fly, and should be called a fruit fly.

The most common type of experiment in biology is fruit flies.

Small flies are generally mostly fruit flies.

It is a fruit fly, and there are often around the fruit that spoils.

You should explain the problem in detail, such as where did the "little fly" see it and where did you hear it.

Very small flies are called fruit flies. Drosophila is a small group of flies with a body length of millimeters. The body of the insect is mostly yellow-brown, and some are black.

There are a pair of large and mostly bright red compound eyes on the head, three pairs of eye-edge bristles on the inside of the two compound eyes, the back of the compound eyes is slightly raised, forming a monocular triangle, and there is a pair of monocular bristles under the front and bottom of the three monocephalic eyes.

Growth and development: The 1 complete life cycle of Drosophila is divided into 4 distinct periods, i.e., egg, larvae, pupa and adults. The eggs are about white in length, with a filament sticking out of the front and back of the bottle, which can attach to the food or the wall of the bottle and prevent it from getting deep into the food.

The eggs hatch into larvae after 22-24 h, and the larvae molt twice to become third-instar larvae, about 4-5mm; To the naked eye, it is visible that one end of the head is slightly pointed, and there is a black hook-like mouthpart on it. The larvae live for about 4 days and pupate, at first the color is pale yellow and soft, and then gradually hardens into dark brown, and is about to emerge at this time; Adult flies can mate 8 hours after eclosion, and can lay eggs after 2 days, and adult flies generally survive for 37 days under 25.

Small flies begin with the development of a fertilized egg of a fly. Flies start from adult flies mating and lay eggs, and grow through four stages: eggs, larvae, pupa, and adult flies. Although the lifespan of flies is only about 1 month, their fecundity is very strong, and the feeding habits of flies are very complex, belonging to omnivorous flies, which can feed on various substances.

The higher the temperature, the shorter the time. After mating, female flies often crawl into pools, containers of stagnant water, etc., to lay eggs, so that the eggs can be fully protected.

1. Very small flies This is a fruit fly, a red-eyed fruit fly. Drosophila is very small, with a length of 3 4 mm. The main feature is the large red compound eyes.

2. Drosophila is widely found in the global temperate and tropical climate zones, because its staple food is yeast, and rotten fruits are easy to breed yeast, so its traces can be seen in human habitats such as gardens, vegetable markets and other areas. In temperate zones, fruit flies spend the winter in human homes. Due to its small size, it is easy to pass through screen windows, so it is also common in the home environment.

When I buy fruits and vegetables at home, I sometimes bring fruit flies home and fly around.