How many cockroaches live depends on the habitat, conditions, and species. On the territory of our country there are 5 varieties synanthropic cockroaches. All of them settle in the home of man, in the wild they can not live. It is impossible to leave pests without food. If there are no leftovers from human food, insects begin to feed on glue, wallpaper, leather bindings, and toilet paper. In a hopeless situation, cannibalism is observed, the most powerful individuals survive. But the genetic abilities of cockroaches are not unlimited.
Genetic Opportunities
Suitable conditions for the existence of pests are created in an apartment, a person’s house. For normal life requires the presence of secluded places, a temperature of at least 22 degrees Celsius, an abundance of food, food. Under such conditions, the life of a cockroach is determined by its genetic abilities.
- Blattella germanica. A common household pest. In our area they are called red cockroaches, the Prussians. The embryonic period lasts from 30 to 50 days, the transformation of nymphs into a sexually mature individual occurs in 75-130 days. The life expectancy of adults is a maximum of 16 months.
- Blatta orientalis. Black cockroaches they are superior in size to the Prussians, but inferior in fertility, ability to adapt to the environment. Nymphs reach sexual activity after 5 months at a temperature of +27 degrees Celsius. Under adverse conditions, development lasts up to 5 years. The life expectancy of a cockroach after the transition to the adult stage is 2 years.
- Supella longipalpa. The furniture pest resembles a red prusak. The embryonic stage at room temperature lasts 3 months. For growing up larvae 5 months are required. Mature domestic cockroaches live no more than 4 months.
-
- Prusak
-
- Black
-
- Furniture
Real centenarians live in Australia. They are called digging cockroaches or rhinos. Adults can live up to 10 years. Weight reaches 35 g.
Interesting!
According to scientists, the first cockroaches on Earth appeared long before the dinosaurs - 235 million years ago. Over the past 180 million years, 140 species have appeared. Initially, insects lived in the wild, in tropical countries. Over time, they spread throughout the globe, adapted to the harsh climate and life in close proximity to humans.
How many cockroaches live without food and water
The survivability of insects directly depends on the living conditions - temperature, humidity, food availabilityliquids. With food, water, pests live the entire genetically laid term. Only actions on the part of man, application can violate the idyll poison. Viable pests consume all human food, as well as toilet paper, glue, leather binders, wallpaper, etc. Without normal food for them, they can stay for a long time.
The most tenacious black cockroaches. Females are able to stay without food for 60 days, males - 14, larvae - 70.
Adult Prussians live 20 days, nymphs - 60.
Water for insects is much more important. If the room does not have access to liquid, pests voluntarily leave it. Life expectancy without water for adults is 10 days, larvae - 7.
Interesting!
Cockroaches are amazing creatures that can live without a head. You cannot call this life full, but the pest continues to move, run, even put off the eggs. In this state, cockroaches live 7-9 days. They die due to dehydration.
The ability to prolong fasting is explained by the lack of the need for thermoregulation. Cockroaches stay in a room where the temperature is not exposed to sharp fluctuations. With a complete lack of food, motor activity decreases, energy reserves are preserved. If the conditions do not normalize, cannibalism begins. Adults eat larvae, nymphs.
Vitality through Fertility
At one time, the female red cockroach lays 30 eggs, the survivability of the larvae is 95%. Black relatives can give birth to 25 cubs at a time. The Prussians are the most tenacious, since the female carries the eggs with her in a special odek, and shortly before the birth of the larvae hides it in a secluded place. After the birth, the cubs immediately eat the oteka, then for several days they are under the care of the imago, they learn to get food, live. A female black cockroach drops a bag of eggs almost immediately, so the likelihood of embryo death increases. Often become food for the Prussians.
Females are able to lay eggs constantly, without needing repeated fertilization. Having received a dose of seminal fluid once, the female secures her reserves for life. After dropping the ooteca, eggs are formed again, breeding process continuous. Only adverse conditions can prevent this - a dry climate, bright light, temperatures below 10 degrees Celsius.
