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Seedling culture method for fresh water pearl culturing clam

A technology for cultivating pearl mussels and fresh water is applied in the field of seedling breeding of freshwater pearl mussels, which can solve the problems of high mortality of fish fingerlings, increased cost of seedlings, and high prices of yellow catfish, and achieves high survival rate, reduced cost of seedlings, and good quality. economic effect

Inactive Publication Date: 2008-02-13
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the seedlings of my country's freshwater pearl mussels usually adopt the following two types: 1. The yellow catfish is often used as a parasitic fish in the process of cultivating the triangle sailfish seedlings. The mortality rate is high during parasites, and the price of the yellow catfish is high, generally at 40 Yuan / kg, which increases the cost of raising seedlings
2. Bighead carp fingerlings are generally used for seedlings of pleated crested mussels, and the number of parasitic larvae per fish is 100-200. The mortality rate of fish fingerlings in the parasitic stage is high, and the parasitic efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention adopts the following process steps to the method for raising seedlings of the triangular sail mussel:

[0019] Select healthy and harmless tilapia and yellow catfish, soak them in 5% sodium chloride solution for 10 minutes, and then keep them for a week for parasitism. 2. Take 2 Triangle sail mussels to incubate mussels, and check whether the larvae are mature. Examination under an anatomical microscope revealed that the larva ruptured the membrane and opened and closed 10-15 times per minute, indicating that the larva was mature and capable of parasitism. 3. Take out the two external gill filaments of the female clam, cut the gill filaments with scissors, stir with a dissecting needle to disperse the larvae in the water body, and filter the gills and mucus in the water with a 40-mesh sieve to facilitate the parasitism of the larvae. 4. Dilute the dispersed larvae with clean water to keep the density of larvae at 15 / ml, and keep the parasitic wate...

Embodiment 2

[0022] The present invention adopts the following process steps to the method for cultivating Anodon rotundum seedlings:

[0023] 1. Select healthy and harmless tilapia, yellow catfish, and bighead carp, soak them in 10% sodium chloride solution for 15 minutes, and then raise them temporarily for 10 days for parasitism. 2. Take 3 Anolate clams to incubate mussels, and check whether the larvae are mature. Examination under an anatomical microscope revealed that the larvae opened and closed at 10-15 times per minute, indicating that the larvae were mature and capable of parasitism. 3. Take out the two external gill filaments of the female clam, cut the gill filaments with scissors, stir with a dissecting needle to disperse the larvae in the water body, and filter the gills and mucus in the water with a 40-mesh sieve to facilitate the parasitism of the larvae. 4. Dilute the dispersed larvae with clean water to keep the density of larvae at 10 / ml, and keep the parasitic water bod...

Embodiment 3

[0026] The present invention adopts the following process steps to the method for raising seedlings of the elliptical anodonta:

[0027] Select healthy and harmless tilapia and yellow catfish, soak them in 10% sodium chloride solution for 15 minutes, and then raise them temporarily for 10 days for parasitism. 2. Take 2 oval clams to incubate mussels, and check whether the larvae are mature. Examination under an anatomical microscope revealed that the larvae opened and closed at 10-15 times per minute, indicating that the larvae were mature and capable of parasitism. 3. Take out the two external gill filaments of the female clam, cut the gill filaments with scissors, stir with a dissecting needle to disperse the larvae in the water body, and filter the gills and mucus in the water with a 40-mesh sieve to facilitate the parasitism of the larvae. 4. Dilute the dispersed larvae to a certain density with clean water, keep the density of larvae at 10 / ml, and keep the parasitic wate...

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Abstract

The present invention relates to a spat-cultivating method of the freshwater pearl mussel, which belongs to the technical field of the aquatic spat cultivation. The present invention is characterized in selecting the tilapia; the tilapia is temporarily cultivated after immersed in the sodium chloride solution; taking off the outer gill lamella on both sides of the mature mother mussel to put into a container having the water, moving aside the branchial filament with a pin and filtering the gills and the mucus in the water with a bolting silk to separate the lumpish glochidium; putting the temporarily-cultivated tilapia into a parasitic water body and then put into a temporarily-cultivated cylinder to cultivate, the glochidia completes the transformation and the larva mussel completes the shedding. The present invention selects the tilapia having a strong adversity resistance as the parasitic fish for the freshwater cultivated pearly mussel to realize the parasitic transformation and development process of the gloachidia; the parasitic quantity is large; the survival rate of the tilapia is very high in the parasitic period; in addition, the price of the tilapia is low, which can reduce the spat cultivation cost; the present invention has a favorable economic benefit in the freshwater mussel large-scale spat breeding process.

Description

technical field [0001] The invention relates to a seedling raising method of freshwater pearl mussels, in particular, utilizes tilapia as a parasitic fish of freshwater pearl mussels to realize the parasitic metamorphosis of skeletal larvae, and belongs to the technical field of aquatic seedling cultivation. Background technique [0002] At present, the freshwater pearl mussels in our country mainly include Triangular sail clam, pleated crown clam, Odontoma dorsalis, and Odontoma dorsalis, all of which belong to the mollusc phylum Mollusca, bivalve class Bivalvia, true valve Eulamellibranchia in the order Eulamellibranchia, a species in the clam family Unionidae. Mussels are an important community of freshwater aquatic organisms in my country, and their unique life history is obviously different from other seawater bivalves. Their fertilized eggs develop into larvae on the gill filaments of the mother. After the larvae mature, they are expelled from the mother. When they me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 华丹顾若波闻海波徐钢春王玉芳杨健刘洪波
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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