Domestic cockroach is an egg-borne insect with a peculiar development cycle and an incredible fertility.
The existence of the home “pet”, so undesired by us, begins with the fusion of male and female germ cells in the female's body.
From egg to larva
The result of fertilization of the egg is individual egg shell. Eggs are arranged in rows of 20-30 pieces in ooteke (otlov.ovum - egg, theca - shell). This dense chitin capsule performs the function of the female uterus and serves as a reservoir for eggs until young insects leave them.
In 2-3 weeks after fertilization female part with capsule, leaving her in a secluded place where the newly born nymphs are born. Formed by this time, the larvae break the egg's shell, gnaw through the edema and go in search of food.
The result of one clutch is 20-30 eggs with a survival rate of 80-95%.
Nymph growing up
Externally nymph resembles a smaller copy of an adult without wings, more rounded and dark color.
A nymph who has just dropped a close scale, on the contrary, is deprived of pigment, which is why many people think of an albino mutant.
2-6 months, undergoing a few molts and growing, red-haired nymph becomes matureor imago. A black cockroach needs more time for this: from 6 months to a year. And how many years live cockroaches just learn below.
The duration of the cockroach's life cycle is influenced by moisture, food quality, and temperature. At 22 °, the red prusak matures in 6 months, and at 30 ° in 2 months.
The period of maturity begins with the last molt and ends with the death of the insect. This means that the female reproduces offspring throughout her adult life. It happens 6-9 times.
Life Cockroach
Of practical interest is the duration of only the stage of imago. How long do cockroaches live? Domestic barbel is in the period of maturity 7-9 months, and black - up to 2 years. In total, the life of a cockroach can be up to 4 years.
Life expectancy of subsequent generations is higher than previous ones. This is due to the increased adaptation of our neighbors to the conditions of human dwelling. Wild animals live a little longer.
At the peak of adaptation
Modern insects have high adaptive capabilities and transmit them to their descendants.
Therefore, the life cycle of cockroaches may increase with time.
You are able to reduce their life expectancy by creating unfavorable conditions for their neighbors. Or by starting with them the struggle with known chemicals.
A list of well-established drugs:
- aerosols and sprays: Raptor, Clean House, Raid, Executioner;
- gels: Global, Dohlox;
- traps: Combat, Forsyth;
- crayons: Masha;
- powders: FAS.
