Artificially breeding method for Lutraria maximae

A breeding method, the technology of the giant otter clam, applied in the field of aquaculture, can solve the problems of high labor intensity and low survival rate, and achieve the effect of short operation time, high survival rate and fast growth speed

Inactive Publication Date: 2012-07-25
北海市生产力促进中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a more advanced method for artificial cultivation of large otter clams, to overcome the low survival rate and high labor intensity of the current artificial cultivation methods for large otter clams, and to maximize the cultivation survival rate of large otter clams, thereby Reduce breeding costs and improve economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Select the breeding frame: select the breeding frame made of plastic material, the specification is length × width × height equal to 60 × 45 × 50 cm, the upper part of the breeding frame is open, surrounded by fences, and the distance between the fences is 5 mm , the bottom is covered with uniform round holes, the diameter of the round holes is 5 mm, and a 20-mesh screen leak-proof film is laid on the bottom of the culture frame, and 20 cm thick sea sand with a particle size of 2.5 mm is laid on the leak-proof film, and then Lay 30 cm thick sea sand with a particle size of 1.5 mm;

[0019] (2) Seed selection, delivery, management and harvesting: select 210,000 medium seedlings with a size of 1.0-1.5 cm, transport them to the seedling field with oxygen in shrimp seedling bags, and put about 20,000 seedlings in each bag, and put them in the Shallow sea culture is carried out in 500 breeding boxes, and 400-500 seedlings are placed in each box. During the period, the se...

Embodiment 2

[0021] (1) Select the cultivation frame: select the cylindrical cultivation frame prepared by plastic material, the diameter of the cultivation frame is 50 cm and the height is 45 cm, surrounded by fences, the distance between the fences is 10 mm, and the bottom is covered with uniform A round hole with a diameter of 10 mm. A 20-mesh screen leak-proof membrane is laid on the bottom of the breeding frame. 20 cm thick sea sand with a particle size of 2.5 mm is laid on the leak-proof membrane, and a 30 mm thick sand is laid on it. Sea sand with a particle size of 1.5 mm;

[0022] (2) Seed selection, placement, management and harvesting: select 2.8 million seedlings in the pond, with a size of 1.0-1.5 cm, transport them with oxygen in a bag of shrimp seedlings, put 15,000-20,000 seedlings in each bag, and put them in 6000 Shallow sea culture was carried out in 3 breeding boxes, and 450-500 seedlings were placed in each box. After 51 days of breeding, the size of the seedlings reac...

Embodiment 3

[0024] (1) select the breeding frame: same as embodiment 1;

[0025] (2) Seed selection, placement, management and harvest: 80,000 seedlings in the selected sea area, with a size of 3-4cm, transported with oxygen in shrimp seedling bags, 300-400 seedlings per bag, and stocked in 1,000 breeding boxes During the shallow sea culture, the breeding frame was cleaned once every 2-3 months. When the culture reached five months, it encountered the influence of large marine algae Sargassum, which caused red tides in some ocean areas, which affected the giant otter. For the cultivation of clams, at this time, the whole cultivation frame was hoisted and moved to an unaffected sea area to continue cultivation. The cultivation time was 9 months, and 4716 kg of adult clams were harvested, and the survival rate of cultivation was 94.3%.

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Abstract

The invention discloses an artificially breeding method for Lutraria maximae. The traditionally breeding method for Lutraria maximae has a relatively low survival rate because breeding location cannot be changed after Lutraria maximae are bred and raised in shallow sea, and clearing work for breeding Lutraria maximae is difficult to develop. During red tide or disease period, the location cannot be cleared up and the breeding location cannot be transferred. People can only put hopes on the disease resistant ability of Lutraria maximae and passively watch, without any active defense and measurement, which is the reason why Lutraria maximae have a relatively low survival rate during breeding. With five measures, such as selection of breeding box, choice of seed, breeding of seed, managementof breeding and harvest of adult shellfish, the artificially breeding method for the Lutraria maximae provided by the invention improves the breeding survival rate which reaches 90 to 98 percent, ensures a high speed of growth and reduces a breeding period which is shortened by 3 to 8 months compared with the traditionally breeding method. By the method, the management of breeding is convenient, a strong ability of resisting enemies is obtained, and adult shellfishes are convenient to harvest.

Description

technical field [0001] The invention relates to the cultivation technology of marine bivalve molluscs in the field of aquaculture, in particular to the artificial cultivation method of giant otter clams. Background technique [0002] The giant otter clam (Lutmria maxima jonas), commonly known as "elephant nose snail", is a rare marine treasure with tender meat, delicious taste and rich nutrition. In nature, the giant otter clam mainly lives in the subtidal zone of the southern sea area of ​​my country To the sandy and muddy seabed with a water depth of 10 meters, its lifestyle is buried, and it feeds on single-celled algae, benthic diatoms and organic debris. The shellfish grows rapidly and can reach the size of commercial shellfish (16-24 shells / kg) in one year. As a new type of cultured species, the big otter clam is excellent because of its fast growth, large individual, strong adaptability, and high price. The traits are particularly outstanding, and it is one of the few...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 陈瑞芳彭慧婧蔡德建邹杰刘丽梅刘海娟曾梦清
Owner 北海市生产力促进中心
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