Culture method of early-breeding seedlings of Charybdis japonica

Abstract

The invention relates to a culture method of early-breeding seedlings of Charybdis japonica, which is characterized by comprising the steps of parent crab culture, egg-carrying crab culture, larva culture and the like. Aiming at the biological characteristics of the breeding of the Charybdis japonica, by utilizing the existing facilities for industrial culture of the seedlings of river crabs and the technical means such as regulation and control of ecological conditions, reasonable feeding, disease control and the like, the invention cultures the early-breeding seedlings of the Charybdis japonica required for culture production, the early-breeding seedlings have longer growth period and large scale in the market, and the economic benefit can be obviously improved. The experiment proves that the invention can realize industrial culture of the early-breeding seedlings of the Charybdis japonica, can solve the problem that seawater ponds in coastal areas are used for culturing the Charybdis japonica depending on natural seedlings, can fully utilize the existing facilities for the culture of the seedlings of shrimps and crabs and seawater culture ponds, improves the economic benefit of seawater culture in the coastal areas, has important economic significance and social significance, and has the characteristics of science, rationality, low investment and high practicability.

Description

technical field

[0001] The invention relates to the technical field of seedling breeding of crustaceans, in particular to a method for cultivating early-propagating seedlings of Japanese clams. Background technique

[0002] Charybdis japonica belongs to Crustacea, Portunidae, and the genus Charybdis japonica. Its appearance is similar to blue crabs, with large individuals and bright colors. It is commonly known as backer crab and stone hairy crab. Japanese crab meat is delicious, nutritious, and has the effects of clearing heat, nourishing, and reducing swelling, and is very popular among consumers. Japanese crab also has high industrial value. Its carapace is rich in chitin. In addition, monosodium glutamate can be extracted from crab shells, and crab shells can be ground as feed for poultry. It is a large marine crab with high economic value. There is a great demand in the market. Due to the excessive fishing in recent years, the amount of natural resources is depleting ...

Examples

Embodiment 1

[0016] Example 1. A kind of cultivating method of early multiplication seedling of Japanese catfish, its step is as follows:

[0017] (1) Cultivation pond preparation: use potassium permanganate to disinfect the cultivation pond, rinse the cultivation pond with seawater after disinfection to remove potassium permanganate; then pave the sand with a thickness of 8cm on the 1 / 2 area at the bottom of the cultivation pond. There is a drainage outlet on the cultivation pond at the sand spreading place; use sterilized tiles, hollow bricks or bamboo rafts to build shelters at the bottom of the sand cultivation pond for parent crabs to inhabit; inject deep 60cm, salinity 26, pH into the cultivation pond 8.1 seawater;

[0018] (2) Cultivation of brood crabs: Take Japanese crab brood crabs with strong physique, complete appendages, and a shell length of more than 5cm. The ratio of male to female is 3:1. Enter the breeding pond for parent crab cultivation, the cultivation density is 2 / m...

Embodiment 2

[0023] Example 2. A kind of cultivating method of early multiplication seedling of Japanese catfish, its step is as follows:

[0024] (1) Cultivate pond preparation: use potassium permanganate to disinfect the cultivation pond, wash and remove potassium permanganate with seawater after the disinfection; then lay 15cm sand with a thickness on the 3 / 4 area at the bottom of the cultivation pond. There is a drainage port on the cultivation pond at the sand spreading place; use sterilized tiles, hollow bricks or bamboo rafts to build a shelter at the bottom of the sand cultivation pond for the parent crabs to inhabit; inject deep 80cm, salinity 30, pH into the cultivation pond 8.5 seawater;

[0025] (2) Cultivation of brood crabs: Take Japanese crab brood crabs with strong physique, complete appendages, and shell length of more than 5cm. The ratio of male to female is 3:1. Enter the breeding pool for brood crab cultivation, and the cultivation density is 3 / m 2;During the cultiva...

Embodiment 3

[0030] Example 3. In the step (5) of the method for cultivating early breeding seedlings of Nippon japonica described in embodiment 1 or 2, the concentration of the nystatin seawater solution used for disinfection bathing is 30~40g / m 3 , the concentration of potassium permanganate seawater solution is 8 ~ 12g / m 3 .

technical field

[0001] The invention relates to the technical field of seedling breeding of crustaceans, in particular to a method for cultivating early-propagating seedlings of Japanese clams. Background technique

[0002] Charybdis japonica belongs to Crustacea, Portunidae, and the genus Charybdis japonica. Its appearance is similar to blue crabs, with large individuals and bright colors. It is commonly known as backer crab and stone hairy crab. Japanese crab meat is delicious, nutritious, and has the effects of clearing heat, nourishing, and reducing swelling, and is very popular among consumers. Japanese crab also has high industrial value. Its carapace is rich in chitin. In addition, monosodium glutamate can be extracted from crab shells, and crab shells can be ground as feed for poultry. It is a large marine crab with high economic value. There is a great demand in the market. Due to the excessive fishing in recent years, the amount of natural resources is depleting ...

Examples

Embodiment 1

[0016] Example 1. A kind of cultivating method of early multiplication seedling of Japanese catfish, its step is as follows:

[0017] (1) Cultivation pond preparation: use potassium permanganate to disinfect the cultivation pond, rinse the cultivation pond with seawater after disinfection to remove potassium permanganate; then pave the sand with a thickness of 8cm on the 1 / 2 area at the bottom of the cultivation pond. There is a drainage outlet on the cultivation pond at the sand spreading place; use sterilized tiles, hollow bricks or bamboo rafts to build shelters at the bottom of the sand cultivation pond for parent crabs to inhabit; inject deep 60cm, salinity 26, pH into the cultivation pond 8.1 seawater;

[0018] (2) Cultivation of brood crabs: Take Japanese crab brood crabs with strong physique, complete appendages, and a shell length of more than 5cm. The ratio of male to female is 3:1. Enter the breeding pond for parent crab cultivation, the cultivation density is 2 / m...

Embodiment 2

[0023] Example 2. A kind of cultivating method of early multiplication seedling of Japanese catfish, its step is as follows:

[0024] (1) Cultivate pond preparation: use potassium permanganate to disinfect the cultivation pond, wash and remove potassium permanganate with seawater after the disinfection; then lay 15cm sand with a thickness on the 3 / 4 area at the bottom of the cultivation pond. There is a drainage port on the cultivation pond at the sand spreading place; use sterilized tiles, hollow bricks or bamboo rafts to build a shelter at the bottom of the sand cultivation pond for the parent crabs to inhabit; inject deep 80cm, salinity 30, pH into the cultivation pond 8.5 seawater;

[0025] (2) Cultivation of brood crabs: Take Japanese crab brood crabs with strong physique, complete appendages, and shell length of more than 5cm. The ratio of male to female is 3:1. Enter the breeding pool for brood crab cultivation, and the cultivation density is 3 / m 2;During the cultiva...

Embodiment 3

[0030] Example 3. In the step (5) of the method for cultivating early breeding seedlings of Nippon japonica described in embodiment 1 or 2, the concentration of the nystatin seawater solution used for disinfection bathing is 30~40g / m 3 , the concentration of potassium permanganate seawater solution is 8 ~ 12g / m 3 .

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