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Method for improving survival rate of octopus ocellatus larve

A technique of survival rate and larvae, which is applied in the field of improving the survival rate of short octopus larvae, can solve the problems of inapplicability of short octopus larvae, etc., and achieves the effects of convenient material collection, low cost and strong pertinence.

Inactive Publication Date: 2013-12-11
AQUATIC PROD RES INST SHANDONG PROV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this device is only suitable for grow-out cuttlefish, not for short octopus larvae

Method used

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  • Method for improving survival rate of octopus ocellatus larve
  • Method for improving survival rate of octopus ocellatus larve
  • Method for improving survival rate of octopus ocellatus larve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Disinfected branches of Suaeda salsa were evenly placed in the short octopus cultivation pond for space isolation, and white plastic crosses were hung on the surface of the water body as shelters, and the breeding density of hatched larvae was 30 / m 3 ; After 10 days of cultivation, the daily cannibalism rate was 1.1%, and the cannibalism behavior took place less.

Embodiment 2

[0020] The shelter was not evenly placed in the short octopus cultivation pond, and the breeding density of hatched larvae was 30 / m 3 ; After 10 days of breeding and cultivation, the daily cannibalism rate was 3.2%, and the cannibalism behavior took place more seriously.

Embodiment 3

[0022] The shelter was not evenly placed in the short octopus cultivation pond, and the breeding density of hatched larvae was 150 / m 3 ; After 10 days of breeding and cultivation, the daily cannibalism rate was 6.1%, and the cannibalism behavior took place very seriously.

[0023] The breeding conditions of the above examples: the water body is filtered seawater, the water quality is kept clean by changing the water and absorbing sewage, the salinity is 28-32, the pH is 7.8-8.1, the dissolved oxygen content is ≥5mg / L, the ammonia nitrogen content is ≤0.2mg / L, and shade Avoid light, make the light intensity less than 500lx, and the area of ​​the breeding pond is 15~20m 2 , the water depth is 0.5m~1m. Feeding sufficient larval bait;

[0024] Experimental material: newly hatched octopus larvae, weighing 0.03g.

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Abstract

The invention discloses a method for improving the survival rate of octopus ocellatus larve. The method adopts the steps that under indoor culture condition, suspension shelters are fed in a floating stage, small-sized shellfish shelters are fed in the early stage of attaching to a bottom, snail shelters are fed in the later stage of attaching to the bottom, and the breeding density is adjusted in different stages. Through the implementation of the method, a dwelling site in an artificial environment is provided for the octopus ocellatus larve, the occurrence of cannibalistic behavior among the octopus ocellatus larve can be remarkably reduced through controlling the breeding density and providing the shelters in the different stages, so that the survival rate of the octopus ocellatus larve is improved. The method for improving the survival rate of octopus ocellatus larve has the advantages that the pertinence is strong, the shelters can be obtained conveniently, the expense is low, and the operation is simple and convenient.

Description

technical field [0001] The technology belongs to aquatic seedling cultivation technology, specifically a method for improving the survival rate of short octopus larvae. Background technique [0002] Short octopus ( Octopus ocellatus Gray, 1894), belongs to mollusk Cephalopoda (Cephalopoda), Octopoda (Octopoda), Octopodidae (Octopodidae), Octopus (Octopus), widely distributed in the western Pacific coast, in the north and south coasts of my country. Yellow Sea and Bohai Sea have larger output, Qingdao, Yantai, and Weihai in Shandong, Dalian and Yingkou in Liaoning, and Laoting in Hebei have larger output. Its meat is delicious and nutritious, popular with consumers, and has high economic value. The fresh, dried and processed products of octopus have a broad market at home and abroad, mainly exported to South Korea and Japan, and are important export seafood in northern my country. [0003] At present, in the process of artificial breeding of short octopus, the phenomenon o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 王卫军杨建敏董根王忠全韦秀梅孙国华刘相全
Owner AQUATIC PROD RES INST SHANDONG PROV
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