Temperature-controllable scylla paramamosain juvenile crab intermediate breeding device and method

Abstract

The invention discloses a temperature-controllable scylla paramamosain juvenile crab intermediate breeding device and a method. A measuring device is arranged on the left side of a breeding pond, a temperature control house is arranged on the right side of the breeding pond, and aeration equipment is arranged on the outer part of the left side of the breeding pond; a first water pipe and a first water pump are connected to the left side of the bottom of a device body, a third water pipe is connected to the outside of a water outlet of the first water pump, the rear end of the third water pipeis connected to a reservoir, a water outlet of the reservoir is fixedly connected with a filter, a second water pump is fixedly connected to the rear end of the filter, a second water pipe is fixedlyconnected to the outside of a water outlet of the second water pump, the second water pipe is connected to the temperature control house, and a through hole is formed in the bottom left side of the temperature control house to connect to the breeding pond; and the breeding pond is internally provided with a leakage plate, a filter sponge I, a zigzag net clothing and a shelter from bottom to top. The temperature and salinity can be monitored in real time and the temperature of the water body is maintained, fights between individual juvenile crab are prevented, circulating water and the aerationequipment are arranged, the survival rate of scylla paramamosain juvenile crab can be improved, and the growth and development of scylla paramamosain juvenile crab are promoted.

Description

technical field [0001] The invention relates to a temperature-controllable intermediate cultivating device and method for mud crab seedlings, belonging to the cultivating device and method for crab seedlings. Background technique [0002] Scylla genus Arthropoda, Crustacea, Decapod, Portunidae, Scylla genus, is a kind of aquatic crustaceans. It is mainly distributed in the Yangtze River Estuary and the coastal waters to the south of my country. It is an important marine fishery resource in China. and marine economy crabs. [0003] Scyllas are wide-temperature and wide-salt animals. When the water temperature is stable above 18°C, the young crabs molt and grow up. When the water temperature rises above 37°C, the blue crabs do not eat. Grey-red spots appear on the nails, and the body gradually ages and dies. The living salinity of mud crab is 2.6‰~55‰, the adaptable range is 6.5‰~33‰, and the optimum salinity is 12.8‰~26.2‰ (specific gravity 1.010~1.021). [0004] During the...

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Problems solved by technology

[0004] During the cultivation of early larvae of blue crabs, juvenile crabs prefer to hide in shelters in the water, and juvenile crabs at different developmental stages and individual sizes have different requirements for habitat depth and living space, and too small a living space may threaten juvenile crabs. The growth of young crabs cannot be covered by too large a living space, and too many young crabs gathered in the same space will lead to fighting with each other, resulting in injuries and severed limbs of young crabs, seriously affecting their survival rate

[0005] At present, the proportion of artificial seedlings in blue crab breeding is relatively low, mainly because artificial seedling cultivation technology has not been popularized and the production cost of artificial seedlings is too high

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