CN203340800U - Seabed complex cultivating apparatus for stichopus japonicas and comb shells - Google Patents

Abstract

The utility model provides a seabed comprehensive culturing device for scallops with thorns and scallops. The device includes a three-dimensional support, and at least two layers of cultivation areas are arranged on the upper part of the three-dimensional support. The cultivation area on the bottom layer is used for cultivating sea cucumbers, and a number of sea cucumber shelters are fixedly arranged on the nets at the bottom, and the cultivation areas of the remaining layers are used for culturing scallops. A number of longitudinal nets are fixedly arranged between each of the longitudinal nets, and several three-dimensional net pockets are arranged on each longitudinal net. According to the biological and ecological characteristics of scallops and japonicus, the utility model provides a device suitable for multi-nutrient layer comprehensive cultivation on the seabed, which can promote the growth of scallops, increase the production of scallops per unit area, and operate It is simple and easy to operate on site. It can make full use of the sea space and the complementarity of different ecological niches to increase the production of aquaculture and reduce environmental pressure.

Description

A kind of seabed comprehensive culture device of scallops

technical field

The utility model belongs to the technical field of seawater culture, in particular to a seabed comprehensive culture device for scallops with scallops.

Background technique

Sea cucumber ( Apostichopus japonicus ) is one of the rare species of marine economic animals in China. It feeds on seabed sediments (such as organic debris, some bacteria and protozoa, etc.) by scraping or sweeping up its tentacles. Sea cucumber is not only a delicacy and health food, but also a marine drug with high medicinal value. With the development of social economy and the improvement of people's living standards, the demand for this era is increasing.

Patinopecten yessoensis is a cold-water shellfish with the advantages of large size, fast growth and high economic benefits. Since it was introduced into my country in the 1980s, after years of technical research and research, breakthroughs have been made in artificial breeding and breeding technology, and it has been cultivated on a large scale in Liaoning, Shandong and other places in my country, bringing huge economic benefits. and social benefits. At present, the aquaculture output of scallops in the North Yellow Sea has reached 150,000 tons per year. Extensive bottom-seeding multiplication is the main breeding method at present, that is, seedlings over 3 cm are sown on the seabed at a density of 8-10 seedlings/m ² , and they are harvested by divers or trawl nets. The survival rate is greatly affected by the substrate conditions and harmful organisms (starfish, etc.), the mortality rate is high, the return rate is low, and the cost of harvesting is high. In addition, bottom-seeding multiplication has high requirements on substrate conditions. Due to the limitation of substrate conditions, the scale and development of bottom-seeding scallop multiplication are hindered. In order to expand the scale of breeding and increase the income of breeding, the improvement of breeding facilities and breeding techniques is urgently needed.

Multi-trophic integrated aquaculture (IMTA) is a farming model based on ecosystem-level management. From the perspective of the food web of the entire ecosystem, including primary, secondary, and high-trophic integrated aquaculture, the excess input into the aquaculture system Nutrients and metabolic waste of one cultured organism become the source of nutrition for another cultured organism. Through the recycling of nutrients, it not only reduces the pressure of breeding on the environment, but also improves the diversity and economic benefits of cultured species. The purpose is to promote the sustainable development of the farming industry.

According to above-mentioned theory, it is imminent to study a kind of seabed comprehensive culture device suitable for japonicus japonicus and scallop.

Utility model content

The purpose of this utility model is to solve the problems existing in the cultivation of sea cucumbers and scallops, and develop a new type of comprehensive seabed cultivation device for sea cucumbers and scallops. Its design is coupled with the biology, Ecological characteristics can solve the problems of low harvesting rate and poor quality of cultured products existing in the prior art.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to achieve:

A seabed comprehensive cultivation device for scallops, the device includes a three-dimensional support, at least two layers of cultivation areas are arranged on the upper part of the three-dimensional support, the surroundings of each layer of cultivation area are respectively surrounded by nets, and the bottom cultivation area is covered with nets. For the cultivation of sea cucumbers, several sea cucumber bunkers are fixedly arranged on the nets at the bottom, and the cultivation area of the remaining layers is used for cultivating scallops, and several longitudinal shelters are fixedly arranged between the nets on the opposite two sides of the scallops cultivation area. Net clothing, several three-dimensional net pockets are arranged on each longitudinal net clothing.

The vertical net is set up standing, which means that the plane where the longitudinal net is located is perpendicular to the net plane at the bottom. In this way, several three-dimensional net pockets can be set on the longitudinal net for cultivating Ezo scallops. The opening of the three-dimensional net pockets faces upwards to prevent Ezo The scallops are fixed by the non-secreted silks, collide with each other, bite and damage, which effectively improves the survival rate of Ezo scallops.

According to the biological and ecological characteristics of scallops and sea cucumbers, the utility model develops a device suitable for multi-nutrient layer comprehensive cultivation on the seabed, so as to make full use of the complementarity of sea area space and different ecological niches, and improve the cultivation output , to reduce environmental pressure.

In the integrated farming model of sea cucumber + scallop, the feeding activity of sea cucumber on the biological sediment of scallop can restore the environment.

Further, a zipper opening is set on the net clothing on one side of each layer of breeding area. Through the zipper, it is convenient to put seedlings, sample and harvest during farming operations.

Wherein, the sea cucumber shelter includes a semicircular shelter body and baffles on both sides of the shelter body, the width of the baffle plate is 50cm, and a round hole with a diameter of 4.8cm is set on the shelter body, and the sea cucumber shelter is made of PVC material, the specification It is 15cm long and 6.75cm high.

A round hole with a diameter of 4.8 cm is set on the japonicus shelter, which is conducive to the activity and feeding of the japonicus. A baffle with a width of 50 cm is designed on both sides of the semicircle to increase the space for sea cucumbers to move, and at the same time, it is conducive to the enrichment of organic debris. the

Further, the layers of the three-dimensional support are connected with sleeves. Layers are connected by sleeves, which can be freely combined and disassembled. According to the needs of breeding, they can be combined into double-layer, three-layer and other multi-layers.

Wherein, the three-dimensional bracket is made of titanium alloy material, and its size specification is: length 1.2-1.8m×width 0.8-1.2m×height 0.4-0.6m.

Further, the upper part of the three-dimensional support is provided with two layers of cultivation areas, the lower layer is used for the cultivation of sea cucumbers, and the upper layer is used for the cultivation of scallops.

Wherein, the pore diameter of the netting surrounding the lower sea cucumber cultivation area is 0.5-0.7 cm.

Wherein, the pore diameter of the netting surrounding the upper scallop cultivation area is 1-2 cm.

Wherein, a sea cucumber bunker is placed every 10-20 cm in the sea cucumber breeding area.

Among them, 6-10 longitudinal nets are set in the Ezo scallop cultivation area, and 6-10 net pockets are set on each longitudinal net. The size of the net pockets is 19.5-20.5cm×10.0-11.0cm.

All nets are tied to the three-dimensional support or sleeve by nylon rope.

Compared with prior art, advantage and positive effect of the present utility model are:

1. The seabed comprehensive culture device of the scallop of the present utility model is ingeniously designed, and can be combined into double-layer and multi-layer culture facilities as required. The zipper opening on the side of the net is designed, which is easy to operate when raising seedlings and harvesting at sea.

2. Developed according to the characteristics of cultured sea cucumbers and scallops, with strong pertinence and strong applicability. The designed three-dimensional net bag can prevent the scallops from colliding with each other and biting damage due to the non-secreted foot silk, which can effectively improve the survival rate of the scallops. The designed japonicus shelter can not only provide a habitat for japonicus japonicus, but also increase the activity area of japonicus japonicus, facilitate the enrichment of organic debris, and provide rich bait for japonicus japonicus.

3. The use of the comprehensive cultivation device can promote the growth of sea cucumbers and increase the cultivation yield of scallops per unit area, and has the characteristics of simple and convenient operation and strong on-site operability.

Description of drawings

Fig. 1 is the structure schematic diagram of the specific embodiment of the seabed comprehensive cultivation device of scallop scallops described in the utility model;

Fig. 2 is the structural schematic diagram of the upper layer of the seabed comprehensive culture device of the scallop scallop described in the present invention (remove the net clothes and casing around it);

Fig. 3 is a schematic structural view of the sea cucumber cultivation area of the lower floor of the seabed comprehensive culture device for sea cucumbers of sea cucumbers described in the utility model (the surrounding nets and sleeves are removed);

Fig. 4 is a structural schematic diagram of the sea cucumber shelter.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Shown in Fig. 1 with reference to, a kind of seabed comprehensive cultivation device of scallop scallop comprises three-dimensional support 1, and two layers of cultivation areas are arranged on the top of three-dimensional support 1, is respectively the scallop cultivation area 2 of the upper floor and the scallop scallop cultivation area 2 of the lower floor. Participate in the breeding area 3, and the four sides of each layer of the breeding area are surrounded by net clothes 4;

As shown in Figure 2, eight vertical nets 5 standing are fixedly arranged between the opposite two side nets of the scallop cultivation area 2, and eight three-dimensional net pockets 6 are set on each vertical net 5, totaling 64. Three-dimensional net bag 6 material is the used net clothing of common scallop culture net cage, and the size of net bag 6 is 20cm * 10.5cm. The three-dimensional net bag 6 can prevent the scallops from colliding and biting each other due to the non-secreted foot silk from being fixed, thereby effectively improving the survival rate of the scallops.

As shown in FIG. 3 , a japonicus bunker 7 is fixedly arranged every 15 cm on the net clothing at the bottom of the japonicus breeding area 3 , and eight japonicus bunkers 7 are fixed in total.

Zipper openings (not shown) are set on the net clothing on one side of each layer of breeding area. Through the zipper, it is convenient to put seedlings, sample and harvest during farming operations.

As shown in FIG. 4 , the sea cucumber shelter 7 includes a semicircular shelter body 71 and baffles 72 on both sides of the shelter body. The baffles 72 increase the living space of the sea cucumber and are beneficial to the enrichment of organic debris. The baffle plate 72 has a width of 50 cm, and a round hole 73 with a diameter of 4.8 cm is set on the shelter body 71, which is conducive to the activities of sea cucumbers to get food. The sea cucumber shelter 7 is made of PVC material, with a length of 15cm and a height of 6.75cm.

The layers of the three-dimensional support 1 are plugged with sleeves 8 . Layers are connected by sleeves, which can be freely combined and disassembled. According to the needs of breeding, they can be combined into double-layer, three-layer and other multi-layers.

The three-dimensional support 1 is made of titanium alloy material, and its dimensions are: length 1.5m×width 1m×height 0.5m.

Wherein, the pore diameter surrounding the netting 4 around the upper strata scallop culture area 2 is 1.4cm, to strengthen the exchange of water flow, ensure the bait supply needed for the growth of scallops, and reduce resistance at the same time, to increase the stability of the whole device.

The pore diameter of the netting 4 surrounding the lower sea cucumber breeding area 3 is 0.63 cm to prevent the escape of sea cucumber seedlings. In addition, the pore diameter should not be too dense, so as not to be sealed by sediment or fouling organisms, affecting water exchange and food supply .

Specific breeding experiments:

The japonicus used in the experiment was taken from the ginseng pond in Gangxi, Rongcheng City, with an initial size of 54.12 ± 2.41 g; the scallop was taken from Weihai Changqing Co., Ltd., with the initial size of wet weight: 25.94 ± 6.25 g, shell length: 60.14 ± 3.69 mm. In the season when the water temperature is suitable (November), open the zipper, put the japonicus into the bottom layer, and put the ezo scallops into the net bag respectively. There are 64 scallops in the upper layer and 12 sea cucumbers in the lower layer, which is equivalent to 42 scallops and 8 sea cucumbers per square meter. Divers assist in securing the integrated farming unit to the seabed.

After 4 months of breeding, the wet weight of scallops increased by 70.68±0.37g, and the size of sea cucumbers reached 74.2±6.16g, and the survival rate was 96%.

It can be seen that the use of the comprehensive culture device can promote the growth of sea cucumbers and increase the culture yield of scallop per unit area. It has the characteristics of simple operation and strong on-site operability.

Through experimental verification, the utility model seabed comprehensive culture device of scallop scallops has the following advantages:

1. The biological sediments (including feces and pseudofeces) of the upper layer of scallops can become one of the bait sources for the cultivation of sea cucumbers in the lower layer. Not only is it beneficial to the growth of sea cucumbers, but also, through the feeding activities of sea cucumbers, it can reduce the pressure of filter-feeding shellfish biodeposits on the environment;

2. Avoid the bite and damage between the scallops, and improve the survival rate and yield of the scallops;

3. Compared with the method of bottom sowing and multiplication, it can reduce or avoid the invasion of harmful organisms and improve the survival rate; moreover, it is convenient to harvest and has a high return rate.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. Equivalent embodiment. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the utility model still belong to the protection scope of the technical solution of the utility model.

Claims (10)

1. a seabed comprehensive cultivation device of scallops, characterized in that: said device comprises a three-dimensional support, at least two layers of cultivation areas are set on the top of the three-dimensional support, and the surrounding areas of each layer of cultivation areas are surrounded by net clothes respectively, The bottom layer of the cultivation area is used for cultivating sea cucumbers, and a number of sea cucumber shelters are fixedly set on the nets at the bottom, and the cultivation areas of the remaining layers are used for cultivating Ezo scallops. Several longitudinal nets are fixedly arranged between them, and several three-dimensional net pockets are arranged on each longitudinal net. 2. The seabed comprehensive culture device according to claim 1, characterized in that: a zipper opening is set on the netting on one side of each layer of culture area. 3. The seabed comprehensive cultivation device according to claim 1, characterized in that: the sea cucumber shelter comprises a semicircular shelter body and baffle plates on both sides of the shelter body, the baffle plate width is 50cm, and a diameter of 4.8 cm is set on the shelter body. The circular hole of cm, the sea cucumber shelter is PVC material, and the specification is long 15cm, high 6.75cm. 4. The seabed comprehensive culture device according to claim 3, characterized in that: the layers of the three-dimensional support are connected with sleeves. 5. The seabed comprehensive culture device according to claim 4, characterized in that: the three-dimensional support is made of titanium alloy material, and its dimensions are: length 1.2-1.8m×width 0.8-1.2m×height 0.4-0.6m. 6. According to any one of claims 1-5, the seabed comprehensive cultivation device is characterized in that: the top of the three-dimensional support is provided with two layers of cultivation areas, the lower layer is used for the cultivation of sea cucumbers, and the upper layer is used for the cultivation of scallops. farming. 7. The seabed comprehensive cultivation device according to claim 6, characterized in that: the aperture of the net surrounding the lower sea cucumber cultivation area is 0.5-0.7cm. 8. The seabed comprehensive culture device according to claim 6, characterized in that: the aperture of the netting surrounding the upper scallop culture area is 1-2 cm. 9. The seabed comprehensive culture device according to claim 6, characterized in that: a sea cucumber shelter is placed every 10-20cm in the sea cucumber culture area. 10. according to the described seabed comprehensive cultivation device of claim 6, it is characterized in that: 6-10 longitudinal nets are set in the scallop culture area, and 6-10 nets are set on each longitudinal net, and the size of the nets is 19.5 -20.5cm×10.0-11.0cm.

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