Breeding method of portunus trituberculatus rapid-growth novel variety

A technology of portunus trituberculatus and new species, applied in fish farming, application, climate change adaptation, etc., can solve problems such as inability to mix culture, long duration of selective breeding group construction, affecting growth performance, etc., to avoid platooning time different, avoiding vertical spread of diseases, and achieving accurate evaluation

Active Publication Date: 2015-10-21
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two traditional breeding methods that are commonly used at present are group selection and family selection. However, due to the unsolved problem of synchronous rowing of parent crabs, the construction of the breeding population lasts for a long time. During the breeding process, large individuals cannibalize small individuals, and Inbreeding depression cannot be controlled; and family selection, due to the unresolved issue of individual markers, cannot be mixed. During the growth of the family, the survival rate of each family is inconsistent, resulting in a large difference in growth density, which seriously affects the evaluation of growth performance; None of the traditional breeding methods can accurately realize the cultivation of fast-growing new varieties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Traditional family selection method, it comprises the following steps:

[0023] (1) Parent crab selection: select Portunus trituberculatus artificially bred individuals with complete appendages, smooth body surface, no pathogens, and no mechanical damage as parent crabs; the selected male crabs weigh ≥ 250g and have a full armor width ≥ 155mm. The weight of the selected female crab is ≥150g, the width of the carapace is ≥135mm, and the reproductive molt has not been completed;

[0024] (2) Indoor mating: put the selected parent crabs into an independent unit of the indoor cement pool according to the mode of 1 male: 3 females, and complete the mating;

[0025] (3) Surviving the winter indoors: putting the mating female crabs into the overwintering pool for indoor overwintering;

[0026] Described step (3) overwintering indoors: the bottom of the overwintering pool is covered with fine sand of 10-15 cm, and a bait platform is left, and the overwintering pool and the par...

Embodiment 2

[0031] A kind of fast-growing new breed selection method of portunus trituberculatus, it comprises the following steps:

[0032] (1) Parent crab selection: select Portunus trituberculatus artificially bred individuals with complete appendages, smooth body surface, no pathogens, and no mechanical damage as parent crabs; the selected male crabs weigh ≥ 250g and have a full armor width ≥ 155mm. The weight of the selected female crab is ≥150g, the width of the carapace is ≥135mm, and the reproductive molt has not been completed;

[0033] (2) Indoor mating: put the selected parent crabs into an independent unit of the indoor cement pool according to the mode of 1 male: 3 females, complete the mating, and record the date of female crab reproductive moulting;

[0034] (3) Indoor overwintering: set up three temperature overwintering pools, respectively 8°C, 10°C and 12°C, and put mating female crabs into the overwintering pool according to the date of reproductive molting: start with ...

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Abstract

The invention relates to a breeding method of a portunus trituberculatus rapid-growth novel variety, and relates to the technical field of portunid breeding. The method comprises the steps of parent crab selection, indoor copulation, indoor overwintering, reinforcement culturing, larval rearing, family group establishment, and copulation program development. According to the invention, parent crabs are bred artificially, and measures such as gradient temperature and family group establishment are taken. With the method, portunus trituberculatus synchronous reproduction and growth data precise evaluation are preliminarily realized.

Description

technical field [0001] The invention belongs to the technical field of swimming crab breeding, and in particular relates to a method for breeding new fast-growing varieties of swimming crabs trituberculatus. Background technique [0002] Portunus trituberculatus is an important marine economic animal, with a current breeding area of ​​500,000 mu and an output of 100,000 tons. It has become one of the leading species of marine farming in my country. At present, the aquaculture industry of Portunus trituberculatus mainly relies on catching wild crabs to meet the needs of production and breeding, which limits its development. On the one hand, these caught wild Portunus trituberculatus may carry infectious viruses, resulting in a very low survival rate (5-10%), causing heavy losses to the development of industries and regional economies; , the growth rate is slow, and the growth rate is an important economic trait, and the economic value of large-scale Portunus trituberculatus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 高保全刘萍李健陈萍黄昱棣
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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