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Domestication method for adapting scylla paramamosain seedlings to saline-alkali soil water area culture

A technology for simulating mud crabs and saline-alkali land, which is applied in the fields of climate change adaptation, application, fish farming, etc., can solve the problems of inability to widely promote and generate economic benefits, low survival rate of farming, etc., so as to improve the survival rate and increase economic effect of benefit

Active Publication Date: 2020-07-24
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been experiments on saline-alkali land cultivation of blue crabs, the survival rate of the cultivation is low, and it is impossible to promote it on a large scale and generate economic benefits.

Method used

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  • Domestication method for adapting scylla paramamosain seedlings to saline-alkali soil water area culture
  • Domestication method for adapting scylla paramamosain seedlings to saline-alkali soil water area culture
  • Domestication method for adapting scylla paramamosain seedlings to saline-alkali soil water area culture

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Experimental program
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Effect test

Embodiment 1

[0030] The pre-experiment was carried out with different developmental stages of mud crab seedlings, and it was found that the mortality rate of juvenile crabs at stage V was the lowest during the desalination process, so juvenile crabs at stage V were used for domestication. Taking the survival rate as the screening standard, the domestication method of the mud crab seedlings was finally determined, which also laid the foundation for the subsequent improvement of the survival rate of domesticated seedlings in low-alkalinity waters.

[0031] The high-efficiency domestication method of the large-scale seedlings (V stage juvenile crab) of the pseudo-cave blue crab suitable for cultivation in saline-alkali waters of alkalinity<10mM provided by the present invention comprises the following steps:

[0032] 1) Selection and disinfection of juvenile crab seedlings in stage V

[0033] Select stage V juvenile crabs with healthy limbs, strong physique, no disease, and strong vitality, a...

Embodiment 2

[0047] The domesticated crab seedlings are cultured in saline-alkali waters (7-8mM).

[0048] Salt-alkali domesticated crab seedlings are salvaged by aquatic plants and put into a foam box, shaken loose, and the foam box is covered with wet water sponge. The size of the foam box is 50cm×50cm. A small hole with a long (about 1 cM in size) is placed in the seedling shell, and 100 crab seedlings are placed.

[0049] (7) Stocking of crab seedlings after domestication. In the process of alkalinity acclimatization, with the increase of alkalinity, the mortality rate increased, and when the alkalinity rose to 9.4mM, the mortality rate was 33.33% ( image 3 ), before putting the crab seedlings cultivated in salinization into the pond, pour part of the pond water into it, and then slowly pour it into the pond after adapting to the environment.

[0050] Compared with the cultivation of the salinity-alkalinity blue crab after domestication, the mortality rate of the crabs directly plac...

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Abstract

The invention provides a domestication method for adapting scylla paramamosain seedlings to saline-alkali soil water area culture. The method comprises the following steps of: temporarily culturing selected scylla paramamosain seedlings in a culture pond and then reducing the salinity of seawater to be not higher than 1%; and putting the scylla paramamosain seedlings into the seawater with a pH value of 7.0-8.5 and the carbonate alkalinity of 2.5-3.5 mM, and raising the pH value of the culture seawater to 9-10 and the carbonate alkalinity to 9.0-9.5 mM within not less than 3 days, thereby completing domestication. According to the method, the adaptability of scylla paramamosain to saline-alkali soil water areas can be effectively domesticated, the survival rate of the scylla paramamosain put into saline-alkali soil is greatly increased, and economic benefits of culture are increased.

Description

technical field [0001] The invention belongs to the technical field of breeding mud crabs, in particular to a domestication method for adapting mud crab seedlings to culture in saline-alkali waters. Background technique [0002] Scylla paramamosain belongs to the Arthropoda phylum, Crustacea, Decapod order, Portunidae. It is an important breeding economic crab in the world. It is naturally distributed and cultivated in the coasts of many countries such as Africa and Asia. Its edible part is rich in amino acids, proteins, mineral elements, fat, etc., and has high nutritional value. The burrowing blue crab likes to live in mud or ravines with low salinity such as river estuaries, inner bay intertidal zones, and mangroves. It mainly swims and crawls. It usually likes to dig holes and hides in the holes it digs during the day. Among them, they will go out to look for food at night, mainly small shells, snails, small fish and shrimps. Cave blue crab has strong adaptability, the...

Claims

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Application Information

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IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 刘晓刘磊方伟王春琳母昌考叶央芳李荣华宋微微史策王欢
Owner NINGBO UNIV
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