A device for metamorphosis of tortoise-foot Venus larvae

A technology for Venus larvae and attachment metamorphosis, which is applied in climate change adaptation, application, fish farming, etc., and can solve the problems of special ecological requirements and difficult attachment and metamorphosis of Venus larvae.

Active Publication Date: 2022-03-29
FUJIAN NORMAL UNIV
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the laboratory has realized the artificial incubation of tortoise-footed eggs, the cultivation of nauplii larvae, and finally the large-scale cultivation of Venus larvae, the metamorphosis process can only start after the Venus larvae have completed attachment. Larvae are easy to attach and metamorphose, but the peduncles (Turtlepoda and Myocarpus) have special ecological requirements, and it is difficult for Venus larvae to complete attachment and metamorphosis under artificial conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A device for metamorphosis of tortoise-foot Venus larvae
  • A device for metamorphosis of tortoise-foot Venus larvae
  • A device for metamorphosis of tortoise-foot Venus larvae

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Example 1: On June 20, 2019, the Venus larva attachment metamorphosis experiment was carried out in the breeding room of the Southern Ocean Research Institute of Fujian Normal University. Put this device and the breeding tank in the same environment, add the same kind of attachment base, and add 100L of filtered seawater to each, where the water temperature is 25°C, the salinity is 29, and the pH is 8.0. Cultivate and collect Venus larvae, put 2000 Venus larvae into the barrel, adjust the respective switches, cover the barrel lid and start the experiment.

[0022] After 7 days in this device, an average of 729 Venus larvae completed the attachment metamorphosis, and the attachment metamorphosis rate reached 36.5%, while the attachment metamorphosis rate in the breeding tank was only 3.2%.

[0023] Table 1 Comparison of attachment metamorphosis and growth of tortoise-foot Venus larvae

[0024]

[0025] Description: The counting method adopts brush brushing and micros...

example 2

[0026] Example 2: On August 29, 2019, the Venus larva attachment metamorphosis experiment was carried out in the breeding room of the Southern Ocean Research Institute of Fujian Normal University. Put this device and the breeding tank in the same environment, add the same kind of attachment base, and add 100L of filtered seawater to each, where the water temperature is 26°C, the salinity is 29.3, and the pH is 8.0. Cultivate and collect Venus larvae, put 5,000 Venus larvae into the barrel, adjust the respective switches, cover the top barrel lid and start the experiment.

[0027] After 7 days in this device, an average of 1616 Venus larvae completed metamorphosis, and the rate of metamorphosis reached 37.3%, while the rate of metamorphosis in the culture tank was only 4.3%.

[0028] Table 2 Comparison of attachment metamorphosis and growth of tortoise-foot Venus larvae

[0029]

[0030] Description: The counting method adopts brush brushing and microscopic counting.

example 3

[0031] Example 3: On October 20, 2019, the Venus larva attachment metamorphosis experiment was carried out in the breeding room of the Southern Ocean Research Institute of Fujian Normal University. Put this device and the breeding tank in the same environment, add the same kind of attachment base, and add 100L of filtered seawater to each, where the water temperature is 24°C, the salinity is 29.0, and the pH is 7.9. Cultivate and collect Venus larvae, put 15,000 Venus larvae into the barrel, adjust the respective switches, cover the top barrel lid and start the experiment.

[0032]After 7 days in this device, an average of 5576 Venus larvae completed metamorphosis, and the rate of metamorphosis reached 40.5%, while the rate of metamorphosis in the culture tank was only 2.5%.

[0033] Table 3 Comparison of attachment metamorphosis and growth of tortoise-foot Venus larvae

[0034]

[0035] Description: The counting method adopts brush brushing and microscopic counting.

[0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a metamorphosis device for tortoise-foot Venus larvae, which is characterized in that it consists of three parts: a top cover, an inner barrel and an outer barrel, wherein the shape of the top cover is semicircular; the inner barrel is wrapped by a plastic skeleton and a 200-mesh screen At the same time, there are eight attachment platforms for storing the attachment base at 2 / 3 of the height of the inner barrel. There is a round hole in the center of the bottom to facilitate the connection of the outer barrel water pipe; the outer barrel is made of thick PE material, and there is a fixed submersible pump at the bottom. PE water pipe, the water pipe runs through the round hole at the bottom of the inner barrel upwards, and the water in the water pipe is sprayed upwards. There is a water inlet on the outer side of the upper part of the outer bucket, and a drain pipe is arranged on the outer side of the bottom, and an electromagnetic ball valve is arranged on it.

Description

technical field [0001] The invention relates to an aquaculture technology, in particular to an attachment and metamorphosis device for Venus larvae. Background technique [0002] Tortoise foot belongs to Arthropoda, Crustacea subphylum, Crustacea, Cirripeda, Stemia, Minghe family, Turtle foot genus, also known as stone clam, bergamot snail, pen holder, dog claw snail, etc. It is widely distributed in the Indian Ocean and the Pacific Ocean. There is only one species of tortoise foot in China. It is mainly distributed in the coastal areas of Zhejiang, Fujian, Taiwan, and Guangdong. It is a subtropical and tropical intertidal animal. The tortoise foot has a peculiar shape. It lives in the intertidal zone of the mid-high tide area where the waves are violently impacted. The muscle of the tortoise foot stalk is edible, delicious, and has high nutritional value. It is a high-quality food with high protein, low fat, and rich in minerals. It has a variety of physiological functions...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): A01K63/00A01K61/59
CPCA01K63/003A01K61/59Y02A40/81
Inventor 李珂林岗
Owner FUJIAN NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap