Do cockroaches reproduce quickly?

Cockroaches generally begin to crawl out and feed after dusk, and return to their nests early in the morning. The temperature is most active at 24: 32 ℃, and can also be active at 0 ℃. In the tropics, cockroaches can reproduce and move all the year round. In the north, indoor temperatures with heating equipment in winter are suitable for activity and breeding. Let's take a look at whether cockroaches breed quickly.

Do cockroaches reproduce quickly?

The reproduction of cockroaches is a combination of sexual reproduction and asexual reproduction. A mature female cockroach can produce an egg sheath containing 14,40 eggs every 7 to 10 days. The egg sheath is a colloid and hatches between 20 and 37 ℃. The higher the temperature, the shorter the incubation time. At a constant temperature of 30 ℃, it only takes 20 to 30 days, while the longer one can be more than three months. A female cockroach can reproduce nearly 10,000 offspring a year, up to 100, 000. Under extreme conditions, female cockroaches can also lay eggs without males. In other words, many female cockroaches will be androgynous after mating once, and they can lay eggs continuously without mating.

How long does a cockroach live?

The life span of cockroach adults is also longer, the shortest of Blattella germanica is about 100 days, and the longest life span of Periplaneta Americana can survive as long as 1 year, and the life span also varies with species and environmental conditions. In the case of Blattella germanica with the shortest cycle, it generally takes more than 2 months to complete a generation, and the longest Periplaneta Americana takes more than one year. The length of life history varies not only with species, but also with different temperature, nutrition and other conditions. A fertilized female cockroach produces a large number of egg sheaths in its lifetime, and Periplaneta Americana can produce more than 50 eggs at most, so the cockroach has a strong fecundity.

What kind of food do cockroaches eat?

Cockroaches are omnivorous insects with a wide variety of foods, including bread, rice, cakes, meat and vegetarian cooked foods, melons, fruits and beverages, especially noodles with fragrance, sweetness and oil, and have a habit of eating oil. Brown sugar and maltose are the most attractive to them. In addition to loving all kinds of food, cockroaches often bite on other things, such as cotton and wool products, leather products, paper, books, soap, etc., in housing, warehouses, storerooms, etc., and eat rotten organic matter in places such as outdoor garbage dumps, sewers and toilets, and even bite dead animals. But there are some differences in eating habits among different kinds of cockroaches.

What are the hazards of cockroaches?

1. Spreading bacteria: although cockroaches carry a variety of pathogens, it is generally believed that pathogens cannot reproduce in their bodies and belong to mechanical transmission media. However, because of their wide invasion and miscellaneous eating habits, they can not only move in places such as garbage, toilets and bathrooms, but also feed on food, so the spread of intestinal diseases and parasitic eggs can not be ignored. in addition, cases of allergies caused by cockroach body fluids and feces have also been reported.

2. Bite food: factory products, goods in stores, and food at home can all cause economic losses due to cockroaches eating various stains, and occasionally caused communication equipment and computer failures caused by cockroaches. Some people abroad call cockroaches "computer pests".

3. Environmental pollution: the body surface and digestive tract of cockroaches can carry a variety of pathogenic microorganisms, such as dysentery, salmonella, staphylococci, Escherichia coli, hepatitis virus, parasitic eggs and so on. When these cockroaches with pathogens climb onto food and tableware, they may transmit pathogens to people, and secretions, feces and vomits can also cause allergic reactions in the human body.

4. transmitted diseases: cockroaches can also be artificially infected with bacteria that cause Asian cholera, pneumonia, diphtheria, anthrax and tuberculosis, and can carry Ascaris lumbricoides, duodenal hookworm nematodes, beef tapeworms, roundworms, whipworms and other worm eggs. it can also be used as an intermediate host for many kinds of nematodes, such as candida, short membrane tapeworm, tumor tube nematode and so on. Cockroaches can also carry a variety of protozoa, four of which are pathogenic to humans or animals, such as dysentery Amima, Giardia enterica and so on.