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Rapana venosa offspring seed cultivation method

A method for cultivating red snails and a technology for cultivating red snails are applied in the field of seedling cultivation of red snails, which can solve the problems of inconsistent feeding habits and feeding patterns of bait species, low survival rate of juvenile snails and young snails, and low seedling emergence per unit water body, etc. To solve the problem of bait supply and source, increase the rate of larval metamorphosis, and avoid water pollution

Active Publication Date: 2013-05-22
丹东市水产技术推广总站
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Problems solved by technology

In the artificial breeding of snails, due to the unclear understanding of the metamorphosis period, juvenile and juvenile snail feeding habits and feeding methods, benthic diatoms and minced shellfish were used as bait during larval metamorphosis and juvenile and juvenile snail cultivation stages. For cultivation, the bait species is contrary to its diet and feeding method, the metamorphosis rate is low, the survival rate of young snails and young snails is low, the growth rate is slow, and the emergence of unit water is low.

Method used

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  • Rapana venosa offspring seed cultivation method
  • Rapana venosa offspring seed cultivation method

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Embodiment 1

[0029] Basic conditions

[0030] The sedimentation pond is 40 mu, and the depth of the pond is 2m. A sand filter with a filtration capacity of 20 m per hour 3 , The thickness of the fine sand layer in the sand filter is 80cm. The effective volume of the nursery pond is 20m 3 × 4 total 80 m 3 . The total water body of the plant bait culture pond is 120 m 3 . Animal bait culture total water body 90m 3 . During seedling cultivation, the water temperature is 18-30°C, the specific gravity of seawater is 1.022-1.013g / ml, and the pH value is 8.0-8.3.

[0031] 1. Feed cultivation

[0032] (1) Plant bait cultivation:

[0033] Chrysophylla, Chrysoflagellate, Chaetoceros, and Phytophthora were selected as cultivars. At the beginning of April, algae species were introduced from the algae cultivation laboratory of Liaoning Academy of Marine and Fishery Sciences. The primary cultivation was carried out in a 5000ml Erlenmeyer flask, the secondary cultivation was carried out in a 5...

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Abstract

The invention relates to a rapana venosa offspring seed cultivation method. The concrete cultivation steps are as follows: seedling preprocessing by using of water; animal bait cultivation, parent rapana venosa spawning and incubation; larva cultivation; and juvenile rapana venosa and larva rapana venosa cultivation. According to the rapana venosa offspring seed cultivation method, larval metamorphosis rates, juvenile rapana venosa and larva rapana venosa survival rates and growth rates, and seedling emergence amounts per unit of water body can be significantly improved, and the problem of bait supply and sources in rapana venosa manual offspring seed cultivation is solved. The rapana venosa offspring seed cultivation method is suitable for rapana venosa productive manual offspring seed cultivation, and a new method is supplied to rapana venosa large-scale offspring seed cultivation.

Description

Technical field: [0001] The invention relates to a method for cultivating red snail seedlings. Background technique: [0002] R apana venosa Valenciennes, also known as sea snails, belongs to the phylum Molluscs, Gastropoda, Murexidae, and the genus Rapana. Vein red snails have particularly large feet, delicious meat, and rich nutrition. They are the most important large-scale economic snails in my country. In the artificial breeding of snails, due to the unclear understanding of the metamorphosis period, juvenile and juvenile snail feeding habits and feeding methods, benthic diatoms and minced shellfish were used as bait during larval metamorphosis and juvenile and juvenile snail cultivation stages. For cultivation, the bait species is contrary to its diet and feeding method, the metamorphosis rate is low, the survival rate of young snails and young snails is low, the growth rate is slow, and the emergence of unit water is low. Invention content: [0003] The present in...

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 杨辉任福海冯春明袁甜李志刚许方学李秋郑毅刘吉明邹胜利李洪延马德利
Owner 丹东市水产技术推广总站
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