CATDOLL : CATDOLL: What do flies and mosquitoes develop from?

What do flies and mosquitoes develop from?

Flies and mosquitoes are derived from flies and mosquitoes.

Flies have the physiological characteristic of laying eggs for life after mating once. A female fly can lay eggs 5-6 times in her life, with about 100-150 eggs each time, and up to 300 eggs at most. It can reproduce 10-12 generations in a year.

In biology, flies are typical "complete metamorphosis insects". Their life cycle goes through four stages: egg, larva (maggot), pupa, and adult, and the morphology of each stage is completely different. The details are as follows:

1. Eggs

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The eggs are milky white, banana-shaped or oval, and about 1 mm long. There are two ridges on the back of the eggshell, and the membrane between the ridges is the thinnest. The larvae drill out from here when hatching. The development time of the egg stage is 8 to 24 hours, which is related to the ambient temperature and humidity. The eggs will not develop below 13°C, and will die below 8°C or above 42°C. Within the following range, the hatching time of the eggs shortens with the increase of temperature: 20 hours at 22°C; 16 to 18 hours at 25°C; 14 hours at 28°C; and only 8 to 10 hours at 35°C. The humidity of the growth medium also affects the hatching rate of the eggs: the hatching rate is highest when the relative humidity is 75% to 80%; the hatching rate is significantly reduced when it is below 65% or above 85%.

2. Larvae

The larvae of flies are commonly known as maggots, and there are three instars: the first instar larvae are 1 to 3 mm long and have only the posterior spiracles. After molting, they become the second instar, 3 to 5 mm long, with anterior spiracles and two lobes in the posterior spiracles. After molting again, they become the third instar, 5 to 13 mm long, with three lobes in the posterior spiracles. The body color of maggots changes from transparent and milky white to creamy yellow from the first to the third instars until they mature and pupate. The third instar larvae are long conical, with a pointed front end and a truncated rear end, without eyes or legs. The life characteristics of maggots are that they like to drill holes, are afraid of strong light, and live in the dark and dark places where they breed all day long. They are polyphagous, and all kinds of corrupt and fermented organic matter are their delicious food. The larval stage is a critical period in the life of flies. The quality of their growth and development is directly related to the individual size and reproductive efficiency of the fly.

Mosquito life cycle

Mosquitoes are insects that undergo complete metamorphosis. Their life cycle can be divided into four stages:

1. Eggs:

Mosquito eggs can be laid on the water surface, near the water or in the water, depending on the species. The eggs of Anopheles and House mosquitoes are laid on the water surface, while those of Aedes are laid near the water. Anopheles and House mosquitoes hatch in about two days, while Aedes eggs hatch in three to five days.

2. Larvae:

The larvae of mosquitoes are called mosquito larvae. They breathe through a sucking tube. They feed on organic matter and microorganisms. The bristles in their mouths produce water flows that flow and move toward their mouths. This period lasts about 10 to 14 days, and after 4 molts, they become pupae.

3. Pupa

The pupa looks like a comma from the side. It does not eat, but can swim in the water. It breathes through the first pair of respiratory horns. It matures in two days.

4. Adult

Newly born mosquitoes cannot take off (emerge) until their wings are hard. Within 24 hours after emerging, the eighth abdominal segment of male mosquitoes will all turn 180 degrees to complete the mating posture. The mating movements vary according to the species. Some will form mosquito columns in the vast fields at dusk for group dance. Mosquito columns are not necessarily formed by a single type of male mosquitoes, but are often composed of several different mosquito species. At this time, female mosquitoes see the group dance and fly close to the mosquito column to mate with male mosquitoes of the same species before leaving. Mating usually takes 10-25 seconds. Female mosquitoes only mate once in their lifetime. After mating, the fluid secreted by the male accessory gland forms a mating plug in the female mating hole, but it gradually dissolves and disappears completely after about 24 hours. They only mate once in their lifetime, and the eggs they lay in their lifetime (more than 100 days later) can still be fertilized.

Are flies oviparous or viviparous?

Oviparous, not ovoviviparous, which refers to the reproductive mode in which eggs are hatched in the mother's body and produce larvae or nymphs. But flies lay eggs directly, and our artificial maggot breeding is to collect eggs and place them on a culture medium for development and grow into fly maggots.

Flies lay eggs.

Oviparous, reproduces very quickly