Simple and effective urechis unicinctus catching method in sea cucumber and urechis unicinctus polyculture pond

Abstract

The invention provides a simple and effective method for catching urechis unicinctus in a sea cucumber and urechis unicinctus polyculture pond. The method comprises the steps that S1, the water storage amount of the sea cucumber and urechis unicinctus polyculture pond is estimated; s2, tea saponin which is 0.3-0.7 ppm of the water storage amount is put into the sea cucumber and urechis unicinctus polyculture pond; s3, after the tea saponin is put for at least 4 hours, collecting the urechis unicinctus exposed on the bottom surface of the sea cucumber and urechis unicinctus polyculture pond. According to the method, environment-friendly chemicals are adopted, additional devices are not needed, the method is simple and easy to implement, and the yield of the urechis unicinctus living bodies can be increased.

Description

Technical Field

[0001] The invention belongs to the technical field of catching Spinella monocylindrica, and particularly relates to a simple and effective method for catching Spinella monocylindrica in a sea cucumber and Spinella monocylindrica mixed culture pond. Background Art

[0002] The monocylindrical worm is large and fleshy red. It is a marine invertebrate with important economic value and potential medicinal value. Since the 1980s, the monocylindrical worm has been very popular in Yantai, Qingdao and other places. However, due to overfishing and environmental factors, the price of wild monocylindrical worms has continued to rise, and the artificial breeding of monocylindrical worms has emerged. At present, the mixed breeding of sea cucumbers and monocylindrical worms is the main breeding mode of monocylindrical worms, including indoor factory breeding and outdoor land-based pond breeding. Monocylindrical worms burrow in the mud and sand. Their caves are U-shaped, with the cave opening facing upward and the depth can reach 30-80cm. The current harvesting methods include manual harvesting and thorn rake net harvesting. Manual harvesting requires a lot of manpower to dig mud and sand, and the harvesting efficiency is low; thorn rake net harvesting is to blow up the mud and sand with a water pump, and then use a rake net to catch it, which causes serious damage to the breeding environment. In addition, the single-ringed spiny worms captured manually and with a barbed rake have a high sediment content, which makes subsequent cleaning difficult. Summary of the invention

[0003] In view of the above technical problems, the present invention proposes a simple and effective method for capturing Echinops monocylindrica in a sea cucumber and Echinops monocylindrica mixed culture pond, the method comprising:

[0004] S1 estimates the water storage capacity of the sea cucumber and Echinops monocyrthosiphon polyculture pond;

[0005] S2: putting 0.3-0.7 ppm of tea saponin in the water volume into the sea cucumber and Echinops monocyclicus co-culture pond;

[0006] S3 starts collecting the Echinoceros unicyclicus exposed on the bottom surface of the sea cucumber and Echinoceros unicyclicus mixed culture pond at least 4 hours after the tea saponin is added.

[0007] As an improvement, before estimating the water storage capacity of the sea cucumber and Echinops monocylindrica co-culture pond, S1 further includes appropriately draining the sea cucumber and Echinops monocylindrica co-culture pond.

[0008] As an improvement, the S2 specifically adds 0.5 ppm of tea saponin according to the water storage volume in the sea cucumber and monocypripedium co-culture pond.

[0009] As an improvement, S3 further comprises placing the collected Echinops unicinctus into clean water for resting.

[0010] As an improvement, S3 specifically includes starting to manually pick up the Echinoceros unicyclicus exposed on the bottom surface of the sea cucumber and Echinoceros unicyclicus co-culture pond 4-6 hours after the tea saponin is added.

[0011] The present invention also proposes a use of tea saponin as an attractant for catching Echinops monocylindrica, and the dosage of tea saponin in a breeding pond for catching Echinops monocylindrica or a mixed breeding pond of sea cucumber and Echinops monocylindrica is 0.5 ppm.

[0012] The method of the invention adopts environmentally friendly green chemicals, does not require additional devices, is simple and easy to implement, and can improve the harvest rate of living monocyclic worms. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 :Step flow of some embodiments. DETAILED DESCRIPTION

[0014] Factory workshops and pond farming are the main farming modes of Echinops monocylindrica. For example, Chinese patent CN111011274B discloses a factory farming method of Echinops monocylindrica, which uses a larvae cultivation pool, and spreads 3-5 cm thick sea mud on the bottom of the pool as the attachment base for the larvae. The method also specifically discloses a harvesting method: harvesting by trawl at midnight or draining the pool water to manually check for Echinops monocylindrica weighing 25-50g each, with a size of 20-40 heads / kg.

[0015] The burrows of the single-ringed worm live in the mud and sand. The burrows are U-shaped, with the entrance facing upwards and the depth can reach 30-80cm. There is a chimney-like protrusion at the entrance of the burrow. The single-ringed worm survives at a temperature of 15-26℃, a salinity of 20-37, and a pH of 6-9. It can survive normally for more than 48 hours in 15℃ wet sand without water and dry dew.

[0016] Tea saponin, also known as tea saponin, is a class of glycoside compounds extracted from tea tree seeds (tea seeds, tea seeds). It is a natural surfactant with good performance, good biological activity and medicinal value, and is widely used in green agriculture.

[0017] The invention is applicable to the capture of the monocypripedium from a factory workshop or a monocypripedium breeding pond in the existing breeding environment in the art.

[0018] The following examples are provided to further illustrate the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and substance of the present invention, modifications or substitutions made to the methods, steps or conditions of the present invention are within the scope of the present invention.

[0019] All embodiments of the present invention include at least Figure 1 The following steps are shown:

[0020] S1 estimates the water storage capacity of the sea cucumber and Echinops monocyrthosiphon polyculture pond;

[0021] S2: putting 0.3-0.7 ppm of tea saponin in the water volume into the sea cucumber and Echinops monocyclicus co-culture pond;

[0022] S3 starts collecting the Echinoceros unicyclicus exposed on the bottom surface of the sea cucumber and Echinoceros unicyclicus mixed culture pond at least 4 hours after the tea saponin is added.

[0023] Based on the above embodiments, some preferred embodiments, before estimating the water storage capacity of the sea cucumber and the monocypris co-culture pond, S1 also includes appropriately draining the sea cucumber and the monocypris co-culture pond. After the water storage capacity in the sea cucumber and the monocypris co-culture pond is suitable for harvesting, the water storage capacity of the sea cucumber and the monocypris co-culture pond is estimated. The specific estimation scheme is not limited in the present invention and can be a conventional technical means of those skilled in the art.

[0024] Based on the above embodiments, some preferred embodiments, S2 specifically includes adding 0.5 ppm of tea saponin according to the water storage volume in the sea cucumber and monocypripedium co-culture pond.

[0025] Based on the above embodiments, in some preferred embodiments, S3 further comprises placing the collected Echinops unicinctus into clean water for resting.

[0026] Based on the above embodiments, some preferred embodiments, wherein S3 specifically comprises starting to manually pick up the Echinoceros unicyclicus exposed on the bottom surface of the sea cucumber and Echinoceros unicyclicus co-culture pond 4-6 hours after the tea saponin is added.

[0027] Example 1

[0028] The steps for harvesting sea cucumbers and Echinops monocypris in indoor factory-based mixed culture ponds are as follows:

[0029] 1. Properly drain the indoor factory-based sea cucumber and Echinops monocyrthosiphon co-culture pond, and then calculate the volume of the culture water;

[0030] 2. Apply 0.5ppm of tea saponin to the factory-based sea cucumber and Echinops monocylindrica mixed culture pond. Echinops monocylindrica begin to crawl out of the caves in 4-6 hours, and all of them crawl out of the caves within 24 hours.

[0031] 3. After all the single-ringed stingrays have crawled out of the cave, they are picked up manually;

[0032] Put the picked up single-ringed spiny worms into clean water and let them rest.

[0033] The 24-hour survival rate of the capture in Example 1 can reach about 95%, and the 24-hour survival rate using the traditional sand-digging and manual capture method is about 90%. Compared with the traditional sand-digging and manual capture scheme, this embodiment can not only improve the survival rate of capture, but also save a lot of manpower and improve capture efficiency.

[0034] The captured Spinellae monocinctus in Example 1-2 are clean and free of mud and sand, and almost all of the captured Spinellae monocinctus are alive, which will not affect their economic value.

[0035] Example 2

[0036] The steps for harvesting sea cucumbers and Echinops monocypris in outdoor land-based mixed culture ponds are as follows:

[0037] 1. Drain the outdoor land-based sea cucumber and Echinops monocyrthosiphon co-culture pond appropriately, and then calculate the volume of the culture water;

[0038] 2. Apply 0.5ppm of tea saponin to the outdoor land-based sea cucumber and Echinops monocylindrica mixed culture pond. Echinops monocylindrica begin to crawl out of the cave in 4-6 hours, and all crawl out of the cave within 24 hours;

[0039] 3. After all the single-ringed stingrays have crawled out of the cave, they are picked up manually;

[0040] Put the picked up single-ringed spiny worms into clean water and let them rest.

[0041] The survival rate of the capture in Example 2 can reach about 95% after 24 hours, while the survival rate of the capture by the traditional rake net is about 80% after 24 hours. This embodiment can not only improve the survival rate of the capture, but also the captured monocyclic schizonts are clean and free of mud and sand, and almost all the captured monocyclic schizonts survive, which will not affect their economic value.

[0042] Comparative Example 1

[0043] The difference from Example 1 is that 0.7 ppm of tea saponin was applied to the factory-based sea cucumber and Echinops monocylindrica mixed culture pond. After 22 hours, all Echinops monocylindrica crawled out of the cave. The survival rate after 24 hours of capture was about 83%.

[0044] Comparative Example 2

[0045] The difference from Example 1 is that 0.2-0.3 ppm of tea saponin is applied to the factory-based sea cucumber and Echinops monocylindrica mixed culture pond. After 48 hours, 50% of the Echinops monocylindrica crawled out, and after 72 hours, all crawled out.

[0046] Table 1. Capture data of the embodiments and control examples

[0047]

[0048] Although the present invention has been described in detail above by general description, specific implementation methods and experiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A simple and effective method for capturing Echinops monocylindrica in a sea cucumber and Echinops monocylindrica mixed culture pond, characterized in that: The method comprises: S1 estimates the water storage capacity of the sea cucumber and Echinops monocyrthosiphon polyculture pond; S2: putting 0.3-0.7 ppm of tea saponin in the water volume into the sea cucumber and Echinops monocyclicus co-culture pond; S3 starts collecting the Echinoceros unicyclicus exposed on the bottom surface of the sea cucumber and Echinoceros unicyclicus mixed culture pond at least 4 hours after the tea saponin is added.

2. The simple and effective method for capturing Echinops monocylindrica in a sea cucumber and Echinops monocylindrica mixed culture pond according to claim 1, characterized in that: The S1 also includes appropriately draining the sea cucumber and Echinops monocylindrica mixed culture pond before estimating the water storage capacity of the sea cucumber and Echinops monocylindrica mixed culture pond.

3. The simple and effective method for capturing Echinops monocylindrica in a sea cucumber and Echinops monocylindrica mixed culture pond according to claim 1, characterized in that: The S2 specifically involves adding 0.5 ppm of tea saponin according to the water volume in the sea cucumber and Echinops monocyrthosiphon co-culture pond.

4. The simple and effective method for capturing Echinops monocylindrica in a sea cucumber and Echinops monocylindrica mixed culture pond according to claim 1, characterized in that: The step S3 further comprises placing the collected Echinops unicinctus into clean water for resting.

5. The simple and effective method for capturing Echinops monocylindrica in a sea cucumber and Echinops monocylindrica mixed culture pond according to claim 1, characterized in that: The S3 specifically includes manually picking up the Echinoceros unicyclicus exposed on the bottom surface of the sea cucumber and Echinoceros unicyclicus mixed culture pond 4-6 hours after the tea saponin is added.

6. A method of using tea saponin as an attractant for catching Echinops monocylindrica, characterized in that: The dosage of tea saponin in the aquaculture pond for catching and catching Spinella monocylindrica or the mixed aquaculture pond of sea cucumber and Spinella monocylindrica is 0.5ppm.

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