Method for preventing pinna pectinata larvae from floating upwards and adhering

A technology for larvae and larvae, which is applied in the field of bivalve seed production in aquaculture, can solve the problems of low larvae cultivation efficiency and reduced cultivation density, reduce the probability of larvae floating and sticking, reduce floating sticking, The effect of improving the survival rate

Active Publication Date: 2010-06-09
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reducing the breeding density can partially solve the problem of larvae floating and sticking, b

Method used

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  • Method for preventing pinna pectinata larvae from floating upwards and adhering
  • Method for preventing pinna pectinata larvae from floating upwards and adhering
  • Method for preventing pinna pectinata larvae from floating upwards and adhering

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Example Embodiment

[0021] Example

[0022] The present invention provides several typical examples taking the larvae of Panax chinensis as an example, but the present invention is not limited to the following examples.

[0023] 1. The cultivation effect of small cultivation ponds (Table 1)

[0024] Table 1

[0025]

[0026] The conditions in the above examples are suitable conditions for the cultivation of Pansy larvae, that is, water temperature: 18-28°C, salinity: 25-35‰, pH value: 7.0-8.5, and the monocystic algae bait is golden algae, diatoms or flat Algae.

[0027] Such as figure 1 As shown, the cultivation pond length (a) × width (b) × height (c) is 4.0m×3.0m×1.2m, the cultivation water depth is 1.0m, and the cultivation water body is 12.00m 3 , The larvae cultivation density is 4~5 / ml. In this embodiment, two wave pumps 1 are installed on the wall of each cultivation pool 4 in the width direction, which are distributed diagonally, and the distance between the center of each wave pump outlet and ...

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Abstract

The invention relates to aquaculture bivalve offspring seed production, in particular to a method for preventing pinna pectinata larvae from floating upwards and adhering. Two wave-making pumps are arranged in a diagonal shape on the pond wall of a culture pond in a width direction; waves and water flows which are generated by the wave-making pumps are used for dispersing the pinna pectinata larvae so that the pinna pectinata larvae are uniformly distributed in the culture pond, thus the pinna pectinata larvae are prevented from floating upwards and adhering; 24 hours after pinna pectinata fertilized ovums are incubated into D-shaped larvae, when the D-shaped larvae float upwards and are adhered, the wave-making pumps are installed; the proper power of the wave-making pumps is 12-30 W, the proper flow rate is 5-10 m3/h, the proper distance horizontally kept between the water outlet centers of the wave-making pumps and a water surface is 15-25 cm, and the proper distance between the water outlet centers of the wave-making pumps and the adjacent pond wall of the culture pond is 20-40 cm. The invention can reduce upward floating and adhesion ratio matched groups of the pinna pectinata larvae more than 80 percent, enhance the survival rate by 80 percent without obvious adverse effect on the growth of the larvae and achieve the culture density of the larvae by 4-5/ml, thereby effectively enhancing the survival rate and the culture efficiency of the pinna pectinata larvae.

Description

technical field [0001] The invention relates to the production of bivalve mollusc seedlings in aquaculture, in particular to a new method for preventing the larvae from floating and sticking together. Background technique [0002] Atrina pectinata (Linnaeus, 1767) belongs to the phylum Molluscs, Bivalvia, Mytilidae, Atrinaceae, and the genus Atrina pectinata. It has a wide natural distribution in coastal areas of China and is a species of high economic value. Large-scale edible shellfish are widely distributed in temperate and tropical muddy offshore waters, and are distributed in the Bo, Huang, East and South China Seas. Its posterior adductor muscle is particularly hypertrophic, and it can be made into the precious "Jiang Yaozhu", which is a nutritious and delicious sea treasure. The region is very popular. [0003] In recent decades, due to overfishing and the deterioration of environmental conditions, the resources of C. chinensis in my country have declined sharply, a...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张涛杨红生邱天龙吴厚刚王诗欢张立斌刘保忠刘鹰周毅
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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