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Indoor cement pond scylla paramamosain family construction method

A technology of imitating blue crabs and construction methods, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems of low survival rate, non-standard selection of high-quality parents, and low survival rate of breeding, so as to avoid eutrophication , avoid mutual killing and influence, prevent and control the effect of algae outbreak

Pending Publication Date: 2020-05-19
NINGBO UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for constructing a family of pseudo-cave blue crabs in an indoor cement pool. By providing a uniform and suitable breeding environment for blue crabs, it overcomes the non-standard selection of high-quality parents of pseudo-cave blue crabs and the survival rate of adult crabs for a long time. Low, difficult to grasp the female crab reproductive molting time and low survival rate after molting; thus making up for the deficiencies in the prior art

Method used

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  • Indoor cement pond scylla paramamosain family construction method
  • Indoor cement pond scylla paramamosain family construction method
  • Indoor cement pond scylla paramamosain family construction method

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Embodiment 1

[0025] Embodiment 1: the construction of breeding system

[0026] In order to artificially control the variation of various factors, the provided breeding system is preferably set up in a cement pond with a greenhouse. At the same time, the roof of the greenhouse can control the light, so as to achieve the suitable conditions and concealment for the reproduction and molting of blue crabs and mating.

[0027] The length, width and height of the selected indoor cement pool are all ≥15m×12m×2m (the larger the water body of the cement pool, the better the stability of the water system), the cement pool is divided longitudinally, every 2 meters is an area, and every two areas Leave a 60cm interval for people to walk in between. Each area is built with a 2m long, 1m high hard plastic grid with a gap of 3.5cm x 3.5cm (the material must be a material that cannot be clamped by adult blue crabs. The total length of the area can be determined according to the length of the cement pool),...

Embodiment 2

[0031] Embodiment 2: Construction of pseudo-cave blue crab family

[0032] 1) Targeted selection of male crabs with sound limbs, healthy physique, no disease, good nutritional status, and strong vitality, and male crabs with sound limbs, no disease, good nutritional status, good plumpness, and about to reproduce Healthy female crabs that moult and have strong vitality are used as mating individuals. In order to more accurately track and reflect the female crab's reproductive molting situation and the nutritional intake in the later stage, the total carapace width, carapace width, carapace length, body height, first side tooth spacing, second side tooth spacing, The length and weight of Daao immovable fingers were measured with a total of 8 indicators, and the numbers were numbered on the back of each crab with a white paint pen for easy observation ( figure 2 ).

[0033] 2) The specific selection of parents is as follows: male crabs need to select about 300g-500g mature mal...

Embodiment 3

[0044] Embodiment 3: experiment of water quality management

[0045] A control group was set up during the breeding period, no diatoms were introduced into the water body, and fresh small miscellaneous fish were fed every day, and other management was exactly the same as that of the experimental group. After 10 days of breeding, the mortality rate in the control group has exceeded 80%, and the water quality is difficult to control. Because there is no diatom consumption of organic matter in the water body, the content of ammonia nitrogen and nitrite in the water body rises rapidly, especially the residual bait and dead blue crabs have a great impact on the water quality, and it is often necessary to change it every two days When changing the water, the pool must be cleaned, which greatly increases the workload and reduces the utilization rate of the bait. At the same time, a large number of water changes increase the environmental stress of the blue crabs, and the mortality ra...

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Abstract

The present invention provides an indoor cement pond scylla paramamosain family construction method. A used breeding system is located in a light and temperature controllable environment, the breedingsystem comprises a breeding pond, and the breeding pond is internally provided with breeding regions isolated from each other; the breeding regions are laid with gravels and fine sand; the breeding regions are constructed by plastic grids; and the breeding regions are also provided with anti-escape nets. Through the constructed breeding system, mutual killing and influence of scylla paramamosainduring reproductive eclosion are effectively avoided, directional mating can be accurately performed, a male parent and a female parent of a first filial generation can be accurately selected and tracked, and controllable directional breeding is performed. Moreover, diatoms, sinonovacula constricta and scylla paramamosain are used to jointly control the stability of a water body, thereby effectively avoiding eutrophication of the water body and preventing and controlling outbreak of algae and oxygen deficit of the water body at night.

Description

technical field [0001] The invention belongs to the technical field of genetics and breeding of blue crabs, and in particular relates to a method for constructing families of blue crabs in indoor cement pools. Background technique [0002] Scylla paramamosain, commonly known as "scorpion", belongs to Arthropoda, Crustacea, Decapoda, Portunidae, and Scylla De Hann, and is widely distributed. It is located in the southeast coast of China and Asian countries such as Japan, Vietnam, and the Philippines. In my country, it is mainly produced in the East China Sea and South China Sea. The coastal areas such as Zhejiang, Fujian, Taiwan, and Guangdong have more output. Because of its delicious meat, rich nutritional value, and growth The cycle is short, the market demand is large, and it has high commercial value in aquatic product farming. [0003] At present, most of the blue crab seedlings in the domestic market rely on marine fishing. Because of unclear sources, uneven specificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59A01K63/00
CPCA01K61/59A01K63/00Y02A40/81
Inventor 张周毅刘磊张伟佳王春琳母昌考李荣华
Owner NINGBO UNIV
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