Method for improving breeding survival rate of Portunus trituberculatus larvae in northern areas

A survival rate and shuttle technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems that the toxic and side effects of fishery medicines on the ecological environment cannot be ignored, affect the seed market supply, and the seed breeding work fails, etc., to achieve High promotion value and market prospect, reduce the risk of killing each other, and increase the survival rate

Active Publication Date: 2016-10-26
中国水产科学研究院下营增殖实验站
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main ways to cultivate portunus seedlings: industrialization and pond breeding. With the pressure of economic development on the marine environment, the water quality of sea water is showing a trend of deteriorating, which will easily lead to the failure of seedling cultivation and affect the seedling market. supply
Indoor industrial seedling cultivation is generally carried out in March. At this time, the natural water temperature is low, a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] In November 2013, a total of 1,200 parent crabs were acquired in the natural sea area of ​​Laizhou Bay, using our station for 2,000m 2 Standardized workshop for overwintering cultivation. In March 2014, the overwintering survival rate was 96% before the temperature was raised to promote ripening. After the temperature was raised to promote ripening, 920 egg-bearing crabs were cultivated.

[0024] In November 2014, a total of 1,150 parent crabs were acquired in the natural sea area of ​​Laizhou Bay, using our station for 2,000m 2 Standardized workshop for overwintering cultivation. In March 2015, the overwintering survival rate was 94% before the temperature was raised to promote ripening. After the temperature was raised to promote ripening, 890 egg-bearing crabs were cultivated.

[0025] 1. Selection of parent crabs: Select sea-caught or artificially selected individuals of Portunus trituberculatus with complete appendages, smooth body surface, high plumpness, and no...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A method for improving the breeding survival rate of Portunus trituberculatus larvae in northern areas belongs to the field of aquaculture. The method includes parent selection and breeding and larva breeding. The technical characteristics of the method are: performing disinfection treatment on parent crabs after gonad of the parent crabs matures; strictly controlling the feeding amount of nauplius of rotifer and fairy shrimp during a larva breeding stage after nutrient enrichment; evenly spraying the whole pool with zeolite powder during a megalops larva stage; and using a Bdellovbrio type product and viable bacteria degraded substrate improver to improve the larvae breeding water environment. Compared with the conventional breeding methods, in the same breeding scale, the method can decrease the water changing volume by more than 70%, can reduce the fire coal cost by more than 60%, can reduce the input cost by more than 50% after using the microorganism preparation to replace disinfection medicines and antibiotics medicines, can improve the average survival rate of the II stage larvae by 2-3 times, is safe, environment-friendly, efficient in a larvae breeding process, and has high promotion value and wide application prospect.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for improving the survival rate of Portunus trituberculatus seedlings in the northern region. Background technique [0002] Portunus trituberculatus (Portunus trituberculatus) is one of the important crab species in marine culture and multiplication in my country. Since Portunus trituberculatus seedlings were successfully raised in the 1980s, Shandong Province has gradually carried out the proliferation and release of Portunus trituberculatus. Especially since Shandong Province implemented fishery resource restoration in 2005, the release scale of Portunus trituberculatus in the Laizhou Bay of Bohai Sea has expanded year by year. Significant economic and social benefits have been achieved. There are two main ways to cultivate portunus seedlings: industrialization and pond breeding. With the pressure of economic development on the marine environment, the water qual...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A01K61/00A01K63/04
CPCY02A40/81A01K63/04
Inventor 黄经献赵炳然孙祥山宁晨洁张传涛曹金凤隽云昌
Owner 中国水产科学研究院下营增殖实验站
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap