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Fry breeding method for thais luteostoma

A technology of lychee snail and yellow mouth, which is applied in the field of seedling raising of lychee snail, can solve the problems of low survival rate, unstable seedling emergence, and small amount of seedling emergence, and achieves the effect of simple operation.

Inactive Publication Date: 2012-10-24
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a seedling raising method of snail snails, so as to solve the problems of low survival rate of snail larvae, few seedlings and unstable emergence, so as to realize large-scale cultivation of snails

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for raising seedlings of snails with yellow mouth, comprising the following steps:

[0034] a. Nursery site preparation

[0035] The parent snail cultivation pond, larvae cultivation pond and juvenile snail cultivation pond are all ponds with an area of ​​9 square meters. The cultivation pond and juvenile snail cultivation pond are first sterilized, and the disinfection adopts 100ppm potassium permanganate solution to soak and disinfect for 15 hours and then rinse. The water is collected from the open sea area, and is filtered through the manhole at the first level, and the high-level reservoir is sedimented and purified, and then through the second-level sand filter.

[0036] b. Source of parent snails

[0037] In June, in the open sea with a seawater temperature of 25°C, adult snails with yellow mouths were collected as parent snails, and placed in parent snail breeding ponds for intensive cultivation;

[0038] c. Intensive cultivation of parent snails

...

Embodiment 2

[0047] A method for raising seedlings of snails with yellow mouth, comprising the following steps:

[0048] a. Nursery site preparation

[0049] The parent snail cultivation pool, larvae cultivation pond and juvenile snail cultivation pond are all ponds with an area of ​​20 square meters. The cultivation pond and juvenile snail cultivation pond are first disinfected, and the disinfection is performed by immersing and disinfecting in 300 ppm potassium permanganate solution for 24 hours and then rinsed. The water is collected from the open sea area and filtered; the seawater has a specific gravity of 1.020 and a pH of 8.0.

[0050] b. Source of parent snails

[0051] From June to August, in the open sea with a seawater temperature of 28°C, collect adult snails as parent snails, and put them into the parent snail breeding pond for intensive cultivation;

[0052] c. Intensive cultivation of parent snails

[0053] Adjust the water level of the parent snail cultivation pond to 4...

Embodiment 3

[0061] A method for raising seedlings of snails with yellow mouth, comprising the following steps:

[0062] a. Nursery site preparation

[0063] The parent snail cultivation pond, the larvae cultivation pond and the juvenile snail cultivation pond are all ponds with an area of ​​25 square meters. The cultivation pond and juvenile snail cultivation pond are disinfected first, and the disinfection is performed by immersing and disinfecting in 500 ppm potassium permanganate solution for 12 hours and then rinsed. The water is collected from the open sea area and filtered; the seawater has a specific gravity of 1.020~1.023 and a pH of 8.5.

[0064] b. Source of parent snails

[0065] From June to August, in the open sea where the seawater temperature is 22°C, collect adult snails as parent snails, and put them into the parent snail breeding pond for intensive cultivation;

[0066] c. Intensive cultivation of parent snails

[0067] Adjust the water level of the parent snail cult...

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Abstract

The invention relates to offspring seed breeding technology of aquaculture, in particular to a fry breeding method for thais luteostoma. Wild adult individuals of the thais luteostoma are collected in an open sea at the temperature of 22-28 DEG C as parent luteostoma, breeding density is 2-5 / m<3>, intensive breeding is conducted, eggs are laid, egg capsules are hatched into swimming larva according to hatching density as 3000-6000 egg capsules / m<3>, the swimming larva is fed with swimming larva chrysophyceae, skeletonema costatum, chlorella or chaetoceros according to feeding quantity of 30-100 thousand / mL, after the larva is turned to be baby luteostoma, feeding quantity is10-20 g per time for 1000 young luteostoma, water is changed and disinfected timely, the baby luteostoma is turned to be young luteostoma after 25-45 days, and the young luteostoma can be cultivated. The fry breeding method for the thais luteostoma is simple to operate, achieves scale breeding of thais luteostoma fry, and improves fry yield and survival rate of the thais luteostoma on the basis of reducing cost.

Description

technical field [0001] The invention relates to seedling cultivation technology for aquaculture, in particular to a method for raising seedlings of snails with yellow mouth. Background technique [0002] Thais luteostoma Holten belongs to the phylum Mollusca, class Gastroroda, order Stenoglossa, family Thaididae, and the genus Thais. The shell of the yellow-mouthed snail is medium-sized, spindle-shaped, the shell is solid, the suture line is shallow and not obvious, the helix is ​​relatively high, about 1 / 2 of the shell height, and the body whorl is enlarged, in the middle of each helix It protrudes to form a shoulder angle, on which there is a row of horny protrusions, and there are many fine threads and growth lines on the entire shell surface, the shell surface is grayish yellow, mixed with purple-brown plaques, the shell mouth is long oval, and the inner surface is It is earthy yellow with a few purple-brown plaques, the outer lip is thin, with jagged strong notches, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 章飞军商弘付万冬韩志强王迎宾
Owner ZHEJIANG OCEAN UNIV
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