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Artificial directional mating method of Scylla paramamosain

A technology for directional mating of Scylla simulans is applied in the field of artificial directional mating of Scylla simulans, which can solve the problems of unstable seed quality, unclear genetic background, easy to carry pathogenic bacteria, etc., and achieves low cost and high hatching rate. , energetic effect

Inactive Publication Date: 2013-01-02
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these species of crabs mate randomly in the sea area, the genetic background is unclear, and they are easy to carry pathogenic bacteria, etc., resulting in low survival rate and unstable seed quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Selection and preparation of mating sites:

[0024] The black cylinder in the workshop is used as the mating place. The diameter of the bottom of the cylinder is 120 cm and the height is 75 cm. Lay 11cm thick sand at the bottom, and the area of ​​sand accounts for 4 / 5 of the bottom of the whole barrel. Install 2 air heads to inflate continuously, and bury the air heads inside the sand. Inject fresh seawater (salinity: 26~32‰), and the water level is 60cm. A black plastic cloth is used to cover the upper part of the drum to keep the light low.

[0025] (2) Selection of candidate parents:

[0026] The first generation of blue crabs we cultivated are used as candidate parents, and male and female crabs with a body weight of 180-220g, complete body and limbs, strong vitality and no parasites are selected, rinsed with fresh seawater, and put into a drum. Put 2 male crabs and 2~3 female crabs in each drum.

[0027] (3) Intensive breeding and mating: keep 100% water c...

Embodiment 2

[0029] (1) Selection and preparation of mating sites:

[0030] The black cylinder in the workshop is used as the mating place. The diameter of the bottom of the cylinder is 120 cm and the height is 75 cm. Lay 11cm thick sand at the bottom, and the area of ​​sand accounts for 4 / 5 of the bottom of the whole bucket. Install 2 air heads to inflate continuously, and bury the air heads inside the sand. Inject fresh seawater (salinity: 26~32‰), and the water level is 60cm. A black plastic cloth is used to cover the upper part of the drum to keep the light low.

[0031] (2) Selection of candidate parents:

[0032] Using wild blue crabs in the natural sea area near Qinglan Port, Wenchang City, Hainan Province as candidate parents, select male and female crabs with a body weight of 180-220g, complete limbs, strong vitality and no parasites, wash them with fresh sea water, and put them in in the barrel. Put 2 male crabs and 2~3 female crabs in each drum.

[0033] (3) Intensive bree...

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Abstract

The invention relates to an artificial directional mating method of Scylla paramamosain. The artificial directional mating method of Scylla paramamosain includes: firstly, selecting black barrels as mating sites, spreading sand 10-15cm in thickness at the bottom of each black barrel, setting an air filling device, burying a nozzle of the air filling device in the sand, injecting fresh sea water, and keeping each black barrel in the dark; secondly, selecting healthy female and male crabs weighing 180-220g as candidate parents, cleaning the crabs with the fresh sea water, and putting two male crabs and two or three female crabs in each black barrel for breeding; thirdly, using Sinonovacula constricta as feed, changing all the water in black barrel every day, and taking the female carbs which finish mating for continual breeding. The artificial directional mating method of Scylla paramamosain has the advantages of simplicity in operation, high success rate, low input cost and the like, selective artificial directional mating can be achieved, and the artificial directional mating method of Scylla paramamosain is applicable to artificial large-scale propagation and selection of Scylla paramamosain.

Description

technical field [0001] The invention belongs to the field of artificial mating methods of blue crabs, in particular to an artificial directional mating method of pseudo-cave blue crabs. Background technique [0002] Scylla paramamosain belongs to Arthropoda, Crustacea, Decapoda, Portunidae, and Scylla. It is mainly distributed in the Yangtze River Estuary and beyond in my country. The south coastal waters are my country's important marine fishery resources and seawater cultured crabs. [0003] Pseudomonas blue crab has the advantages of large size, fast growth, delicious meat, etc., and is favored by consumers. In recent years, the annual output of artificial breeding of blue crabs in my country has been stable at more than 100,000 tons, maintaining a stable development momentum. So far, artificially cultivated seedlings mainly come from natural seedlings in sea areas. Due to the limitation of natural conditions in sea areas, it is difficult to guarantee their quality and q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 马洪雨马凌波蒋伟马春艳乔振国
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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