History:

(Cricetulus Barabensis) is commonly known as the Chinese Hamster. It belongs to the class Mammalia, the subclass of eutheria, the order of rodents, the family, the subfamily of hamsters, and an animal of the genus hamster. Black-lined hamsters are the dominant rat species in some provinces north of the Yellow River in my country, and are also distributed in Mongolia, the Soviet Union, Eastern Europe and Central Asia. More common in grasslands, semi-deserts, cultivated land, hillsides and river valleys forest margins and shrubs. It is a harmful animal that harms agriculture and spreads diseases.

Black Line Hamster Alias: Chinese gophers are nocturnal and good at building nests. They are not agile. They land on their abdomens when exercising, and make fierce calls when excited by external stimuli. Females are stronger than males and aggressive, often aggressively attacking males. Click to enter Blackline Hamster Club

Country of Origin:

China.

The adult Chinese are more aggressive, and only the young are more docile.

No hibernation. Their reproduction is affected by the season. They start to breed from March to April every year, and they produce 3 to 5 litters a year, with 4 to 8 litters per litter, and up to 10 litters. Sexual maturity generally occurs at 8 weeks of age, and the most suitable age for reproduction is 12 weeks of age. The estrus cycle is 3 to 7 days (average 4.5 days). The estrus cycle can be divided into pre-estrus, estrus, post-estrus and interestrus. The pre-estrus period lasts for about half a day, and the vulva mucosa is pink or red, moist and loose, and easy to pull out. During this period, the male and female mice are willing to approach, and the female mice often turn around the male mice. During the estrus period, the vulva is further congested, which is dark red, and the clitoris is dark red or purple. During this period, the female mice often move their tails, and they are easy to mate. The estrus period of female mice generally occurs at dusk. If the light is artificially controlled, estrus can be achieved 2 to 3 hours after it becomes dark. In the late estrus stage, the congestion and swelling of the vulva and clitoris of the female rat disappeared quickly, the female rat no longer raised its tail, and the female and male often had bites. During the interval, the vaginal opening is slightly opened or closed, the vulva becomes dry and pale, and the female rat becomes very aggressive during this period. Mating from dusk to 10 p.m. has a high pregnancy rate.

The gestation period of the black line is 20 to 21 days, with an average of 20 days and 14 hours. 21 days of lactation. The ratio of male to female at farrowing was 47.4:52.6. The newborn rat weighs 1.5 to 2.5 grams, and the adult rat weighs 30 to 40 grams. The newborn rat is hairless, eyes closed, and has long coats at 3 to 4 days of age. At the age of 7 days, the whole body is covered with hair, and at the age of 10 to 14 days, the eyes and ears are open. The testes of 1-month-old male mice descended from the abdominal cavity to the scrotum. Black-lined hamsters have a lifespan of 2 to 2.5 years.

Biological characteristics of black-lined hamsters

Black-lined hamsters, commonly known as, striped-backed hamsters, small, etc., are a kind of pest of the genus Hamster of the family Rodentidae. The dominant species of rodents accounted for 54.2% of the total farm rats.

1. Morphological characteristics

Black-lined hamsters are generally 80-110 mm in length, with a short tail, about 1/4 of the body length, with two-colored tails; round and short ears, There is a white border at the end; the snout is blunt, and there are developed cheek pouches in the mouth; the hair from the head, the back of the body to the back of the tail and the cheeks, the sides of the body and the back of the limbs are all yellow-brown or gray-brown; there is a black or gray-brown in the center of the back. Dark brown longitudinal stripes.

2. Habitat and cave structure

Black-lined hamsters mainly live in the wild, generally do not move into farmhouses, and are mostly active in cultivated land, roadsides, wasteland and other places. Most of the caves are built on the ridges, ditch edges and backs of the ridges above the water. The structure of the temporary cave is simple, with only 1 hole and 1 nest, no warehouse and toilet, and the tunnel is short; the Changju cave has a complex structure, with 2 to 5 holes, many tunnels, and 1 to 2 discs inside. The nest room is generally in the middle of the lower section of the branch of the tunnel, close to the grain storage room and the toilet. There are crop leaves, chicken feathers, feathers, etc. in the nest room. There are 3 to 4 granaries and 1 to 2 toilets in the hole. The length of the tunnel, the size of the cell and the vertical depth from the ground vary with the seasons. Generally, it is deeper in winter and shallower in other seasons.

3. Living habits

The rat never mixes the living, eating and toilet places, and has the habit of storing according to the type of food. Generally, there is only one adult rat in a burrow, and the young Rats and sub-adults live separately from their mothers and build burrows 35-100m away from the mother's nest. The female mice and the young mice are distributed in a circle in the same field, and there are few other rodents building burrows in their field, but they are allowed to move around in their range. Male to female ratio 1:3.7. Black-lined hamsters can move within the range of 80-200m from the burrow, but the most frequent activity is within the range of 80-150m. It is more frequent after rain than in sunny days, and its activity range is small in winter. It mainly relies on stored food for a living. May-June and October-November are the peak seasons and do not hibernate. The rat eats miscellaneous food, and uses the seeds of wheat, corn, beans and other crops as the main food, accounting for more than 60% of the food, followed by weed seeds, accounting for 20%, and also eats a small amount of insects and plant stems, leaves, roots, etc. .