CATDOLL : CATDOLL: What is the distribution of freshwater shrimp and what are its main production areas in my country?

1. What is the distribution of freshwater shrimp and what are its main production areas in my country?

Green shrimp, scientifically known as Macrobrachium nipponense, belongs to the Crustacean, Decapoda, Suborder Natatoria, Macrobrachium, Family Macrobrachium, Genus Macrobrachium. It is one of the most numerous types of freshwater shrimp. Most of them have a green body with brown markings, so it is commonly known as green shrimp. It is distributed in China, Japan, Vietnam, North Korea and other countries.

There are more than 100 species of freshwater shrimp in the genus Macrobrachium, which are mainly distributed in tropical and subtropical regions, and 1/4 of them are distributed in America.

Macrobrachium spp. mostly live in inland freshwater or brackish water throughout their lives, but most macrobrachiums live in brackish waters that are directly or indirectly connected to the sea in the early stages of their life history. The requirements of macrobrachium spp. for water quality vary with species. Some prefer to live in clean waters, while others live in turbid waters. Macrobrachium spp. belongs to the former. In China, except for some high mountainous areas, it can basically grow in waters with abundant aquatic plants and clean water bodies, and is distributed in all provinces and cities across the country.

In the country, there is a kind of shrimp that is very similar to the Japanese swamp shrimp, called the Hainan swamp shrimp, which belongs to the same genus Macrobrachium. It mainly lives in rivers and ports, and is also found in lakes. There is also the beautiful white shrimp in the same family, the genus Macrobrachium and the subgenus Macrobrachium. In addition, there is the Chinese new rice shrimp in the genus Neomixin of the family Spoonbill, and the Chinese micro-long-arm shrimp in the genus Micromixin of the family Macrobrachium.

Prawns are a kind of freshwater shrimp that people like very much.

It is very common in Baiyangdian Lake in Hebei Province, Weishan Lake in Shandong Province, Taihu Lake in Jiangsu Province, Dianshan Lake in Shanghai, and freshwater lakes and rivers in other provinces. The number is large and the resources are very rich. The Yangtze River and Huaihe River basins have the highest output, and the annual output (in nature) ranks first among freshwater shrimps in China. In recent years, due to its unique economic value, artificial breeding has developed rapidly, especially Shanghai, Jiangsu, Zhejiang, Jiangxi and other places have become the main production areas of Chinese shrimp.

This article is from: China Agricultural Press "China Biotechnology Development Report"

2. Taian Specialties

Tai'an's specialties include Xintai celery, Taishan Polygonum multiflorum, Shandong pancakes, Taishan red-scaled fish, Dongping Lake prawns, etc. Xintai celery is tall and tender, with little fiber, no residue or silk, crisp and delicious, rich in nutrition, and well-known for its vegetarian taste. Shandong pancakes, originated in Tai'an, are shaped like lotus leaves, thin and soft like paper, and delicious. Pancakes are topped with eggs, which are soft, tender, fresh and fragrant, with a unique flavor.

Taian Specialties

Taishan red-scaled fish, also known as Chilin fish, Shilin fish and spotted fish, is one of the five tribute fishes of China, along with the shad of Fuchun River, the Huang fish of Qinghai Lake, the oil fish and the bow fish of Bohai Sea. It is a genuine Chinese fish treasure.

Dongping Lake prawns are also known as "swamp shrimps", commonly known as river shrimps, and belong to the genus Swamp shrimp of the family Macrobrachiidae of the order Decapoda. Dongping Lake prawns contain a variety of essential amino acids for the human body and beneficial elements such as phosphorus and calcium, and are rich in nutrition.

Taishan Polygonum multiflorum, also known as Taishan White-shouwu, grows in mountain shrubs, under hillside forests, roadsides, forest edge meadows, and is also found in fields and wastelands. It is one of the four famous medicines of Shandong Taishan.

3. Can river shrimps reproduce in fish tanks? How do river shrimps reproduce?

It is not easy for river shrimp to reproduce in a fish tank. If it is already carrying eggs, it is easy to be frightened by changes in the environment, and it may even kick the eggs. If it has been raised for a long time and the river shrimp has adapted to the growth environment of the fish tank, it can be allowed to reproduce. Reproduction requires male and female pairing, and attention should be paid to water temperature and water quality so that it can lay eggs normally. 1. Can river shrimp reproduce in a fish tank? It is not easy for river shrimp to reproduce in a fish tank. If it is already carrying eggs, it is easy to be frightened by changes in the environment, and it may even kick the eggs. If it has been raised for a long time and the river shrimp has adapted to the growth environment of the fish tank, it can be allowed to reproduce. Reproduction requires male and female pairing, and attention should be paid to water temperature and water quality so that it can lay eggs normally.

2. How to breed river shrimps 1. Water quality: If you want river shrimps to breed, the first step is to maintain good water quality. Fluctuations in water quality can easily cause female shrimps to kick eggs, which will greatly reduce the hatching rate. Usually, breeding is done in soft water, preferably distilled water or neutral water. Stable water quality is very helpful for them to hold eggs.

2. Water temperature: River shrimps have certain requirements for temperature, especially during the breeding season. In order to ensure that they can lay eggs smoothly, it is best to increase the water temperature appropriately and keep the temperature at around 25°C. The temperature should not be raised too high. If it reaches 28°C, the female shrimp will not be able to carry eggs.

3. Spawning: Most shrimps need to mate before they can lay eggs, but only dragon shrimps can reproduce parthenogenetically, and a single shrimp can lay eggs. Usually, after fertilization, female shrimps will store sperm in their bodies and squeeze it out when ovulating, turning it into fertilized eggs, which they hold in their abdomens for protection.