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Method for cultivating antispdix offspring and apparatus used thereby

A technology for cephalopods and seedlings, applied in application, fish farming, climate change adaptation, etc., can solve problems such as unfavorable factory nursery production and breeding, low density of cultivated individuals, large seawater consumption, etc., and achieve easy isolation. , Improve the cultivation density, easy to observe the effect

Inactive Publication Date: 2009-05-06
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In foreign countries, circular barrels are used for cultivation experiments. It is a sealed circulating water system. The density of cultivation individuals is very low, the consumption of sea water is large, and the cost is high. It is possible to conduct experimental research only in the laboratory, but for large-scale production, It will greatly increase the cost, which is not conducive to the industrial seedling production and breeding of this type of species

Method used

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  • Method for cultivating antispdix offspring and apparatus used thereby

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Embodiment 1

[0014] Embodiment one: temporarily raise 13 octopuses in the storage pond, temporarily raise density 1~2 / m 3 , water temperature 10-20°C, shading, aeration, water change once a day, water change volume 1 / 3; ② Feeding crustaceans (such as live crabs) and bivalve molluscs, feeding once every 2-3 hours, less feeding Throwing frequently, the broodstock is gradually warmed up to promote gonad maturation; ③ Move the broodstock to the spawning pond, the water body of the broodstock spawning pond is 4-8m 3 Preferably, shading, running water, micro-inflation, seawater salinity 30.0‰; 4. The egg collector dropped into the brood shell spawning pool is a PVC pipe (Φ=10~25cm) or square brick; octopus pot; The broodstock are stocked in the same pond, and the stocking density is 1 to 2 / m 3 , feeding crustaceans and shellfish, 6 female octopuses laid eggs successively; ⑥ Move the female octopuses together with the ovipositor and the egg group to the seedling cultivation pool, and cultivate t...

Embodiment 2

[0015] Embodiment two: 1. temporarily raise 40 mansoni squid parents in the storage pond, temporarily raise density 1~2 / m 3 , the water temperature is 18-20°C, shading, inflating, changing the water once a day, and changing the water volume by 1 / 3; For fresh and live small miscellaneous fish mainly of species, throw less frequently; ③ Move the squid brood to the spawning pond, the water body of the spawning pond is 4-8m 3 , shading, running water, slightly inflated, water temperature is 20-26°C, seawater salinity 25.0-32.0‰; ④ put nylon rope in the parent shell spawning pond, palm rope is the ovipositor, Φ=2mm-5mm , the lower end is fixed on the net cage with sunken stones, and the upper part is tied with floats. And concentrate the egg collection devices into clusters to form an artificial egg collection field; ⑤ put the parent hermaphrodites in a stocking pond, and the stocking density is 1 to 2 / m 3 , the bait is fresh small miscellaneous fish mainly of the trevally family...

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Abstract

Disclosed a method for cultivating the seedling of cephalopod in the young stage of zooplankton is characterized in that: (1) breeding the parent, shading and aerating; (2) accelerating the gonad of parent; (3) moving the parent into the cowrie-friendly ovipositting pool; (4) throwing the spawn-picking device; (5) breeding the male and female in one pool; (6) after the coition of male and female parent, collecting the zygote to be laid into the cultivating pool for the current-aerating cultivation; (7) hatching the seedling of cephalopod to be cultivated in the current of cultivating pool. Wherein, said cultivating pool can form the rotary current while the amount and the water level are controllable to assure the sufficient supply of dissolved oxygen, which can apply the development and the seedling cultivation of zygote. And the method can effectively utilize the cultivating water, increase the cultivation density, easily observe the growth, feeding and the bait conditions of seedling, and solve the variable problems in the producing process in advance.

Description

technical field [0001] The invention relates to a method and a device for raising shellfish seedlings in the field of aquaculture, in particular to a method for cultivating cephalopod seedlings suitable for the stage of planktonic larvae and the device used. Background technique [0002] The real octopus is a species widely distributed in the world. It belongs to the medium and large octopus. It grows rapidly and lays a large amount of eggs. my country's coastal areas have relatively rich natural resources, and they are exported to Japan and South Korea in large quantities. It occupies an important position in my country's fishery and was once one of the four major fisheries in the East China Sea. These two species are both economically important cephalopods in my country. Since the 1980s and 1990s, they have been overfished and their natural resources have been quite scarce. Artificial nursery and cultivation are important means of resource replenishment, but the larval sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 郑小东林祥志杨建敏李琪王如才
Owner OCEAN UNIV OF CHINA