CN203120699U

CN203120699U - Blue crab cultivating device

Info

Publication number: CN203120699U
Application number: CN2013200301635U
Authority: CN
Inventors: 潘少波
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-21
Filing date: 2013-01-21
Publication date: 2013-08-14
Anticipated expiration: 2023-01-21

Abstract

The utility model discloses a blue crab cultivating device. In artificial breeding, blue crabs flee or mutually fight to cause loss. The blue crab cultivating device uses a large net cage and small net cages, wherein the large net cage and the small net cages are sleeved, the large net cage is fixed on a device fixed on a seaside intertidal zone through a fixing rod to cultivate blue crabs, only one blue crab is cultivated in each small net cage, the blue crab are separated from each other by the small net cages, the blue crabs cannot flee, and damage and death caused by fighting of the blue crabs are avoided. The large net cage is connected with the fixing rod through a lifting ring to rise and descend along with ebb and flow, so that the blue crabs cannot be buried by mud and sand brought by rising tide. Furthermore, the blue crabs can catch mollusk plankton in seawater as food. The blue crab cultivating device avoids mutual fighting of blue crabs and can improve cultivation density. 1000 to 1500 blue crabs can be cultivated in each acre of intertidal zone, 400-500 kilograms of blue crabs of each acre of intertidal zone can be harvested, and the intertidal zone resources can be utilized to the greatest degree. The blue crab cultivating device is convenient to manage, saves cultivation cost and improves benefits.

Description

A kind of blue crab cultivation device

Technical field

The utility model relates to a kind of blue crab cultivation device, belongs to the marine aquaculture technical field.

Background technology

Mud crab is a kind of crab class of living in warm sea area bank, belongs to Portumidae, and common have Scylla paramamosain, mud crab, olive malachite crab, South Sea mud crab, purple chela mud crab several, and it is coastal extensively to be distributed in China Guangdong, Guangxi, Fujian, Taiwan, Zhejiang.The mud crab individuality is huge, and growth rate is fast, can grow to 200-250g after growing up to, and delicious meat is nutritious, is regarded as precious seafood, and the good reputation of marine genseng is arranged, and is a kind of important marine economy species that are suitable for propagating artificially of coastal area.Mud crab inhabits the mires that salinity is lower, tidewater is unimpeded, tidal range is bigger such as river mouth, inner bay, mangrove forest more, on the beach.The artificial cultivating method of coastal various places is varied, mainly contains that crab pond monoculture, pond are raised together with, the low height of dam net breed of beach etc., has all obtained better economic and social benefit.Mud crab is flesh-eater, the natural disposition ferociousness, fight mutually between similar when propagating artificially, especially in the shell process of mud crab, fierce fighting can take place, and mud crab all one's life is experienced 13 shells approximately, thus mud crab fight mutually make that the crab body is injured, mutilation even death are a difficult problem in the blue crab cultivation.Another problem in the blue crab cultivation is that mud crab is crossed the pond, cement pit is run away and caused damage.Therefore, how to avoid mud crab because run away, fight and cause damage needing the problem considered in the breeding process with regard to becoming.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of blue crab cultivation device, is used for culturing mud crab and especially prevents that at breeding process mud crab from runing away, fighting mutually.

The solution of above-mentioned technical problem is to have adopted following technical measures: a kind of blue crab cultivation device, mainly formed by fish culture net cage, dead lever, fish culture net cage comprises large cage and small-sized net cage, large cage is cuboid, both sides external or four sides fixedly have the foam floating block, large cage is other to be provided with 2 or 4 dead levers, and the limit for height projection is arranged at the dead lever top, and large cage links to each other with dead lever by lifting ring; Be provided with 1-10 small-sized net cage that is fixed on the large cage bottom in the large cage, small-sized net cage is that the length and width height is the tetragonal body of 28-35cm * 15-20cm * 15-20cm, and sizing grid is 0.5-1cm * 0.5-1cm.

Take the utility model of above-mentioned measure, adopt large cage cover small-sized net cage, and large cage cultured mud crab by the device that dead lever is fixed on the beach of seashore, only support a mud crab in each small-sized net cage, separated by small-sized net cage between mud crab and the mud crab, wounded or disabled dead with regard to having avoided fighting mutually between the mud crab like this, mud crab is placed in to be cultured in the small-sized net cage, also just can't run away again.Large cage links to each other with dead lever by lifting ring, and large cage can move back and lifting along with tidewater rises, and mud crab can not flooded by the silt that tidewater brings at the incoming tide, and can also capture mollusk plankton in the seawater as food.After having adopted the utility model, clamp bucket mutually because avoided mud crab, can improve cultivation density, every mu of beach can be supported 1000-1500 mud crab, and results 400-500 kilogram mud crab/mu has maximally utilised the beach resource, simultaneously such breeding way, be more convenient for managing, save aquaculture cost, increase the benefit.

Description of drawings

Fig. 1 is the utility model structural representation Fig. 1.

Fig. 2 is the utility model structural representation Fig. 2.

Embodiment

As shown in Figure 1 and Figure 2, the utility model mainly is made of fish culture net cage, dead lever.Fish culture net cage is divided into large cage 2 and small-sized net cage 5.1-10 small-sized net cage 5 that is fixed on large cage 2 bottoms arranged in the large cage 2, each small-sized net cage 5 is the tetragonal body of 28-35cm * 15-20cm * 15-20cm, there is grid on small-sized net cage 5 surfaces, and sizing grid is 0.5-1cm * 0.5-1cm, and each small-sized net cage 5 is cultured a mud crab separately.Large cage 2 is tetragonal body, be slightly larger than small-sized net cage 5, the interval of large cage 2 fence 4 is littler than small-sized net cage 5, and small-sized net cage 5 can not be spun off between the fence 4 of large cage 2, and large cage 2 outer surface both sides or four sides fixedly have foam floating block 6, large cage 2 is outside equipped with the dead lever 1 of two or four symmetries, link to each other with dead lever 1 by lifting ring 3, lifting ring 3 one ends and large cage 2 are fixing, and the other end is ring-type, slightly larger in diameter is enclosed within on the dead lever 1 in dead lever 1 diameter.Dead lever 1 bottom is sharp-pointed, and a limit for height projection 7 is arranged at the top.

Dead lever 1 inserts in the beach, and large cage 2 is fixed on the original place.When high tide, large cage 2 outer foam floating blocks 6 are subjected to buoyancy, driving large cage 2 upwards floats along dead lever 1, after floating to certain altitude on the large cage 2, can run into the limit for height projection 7 at dead lever 1 top and stop come-up, large cage 2 can not cause mud crab to be buried by the silt that flood tide brings owing to float, do not float because the restriction of limit for height projection 7 can not break away from dead lever 1, and this moment, mud crab was food with the plankton in the seawater; After the seawater ebb, large cage 2 drops on the beach along dead lever 1, and this moment, mud crab was food with the atom on the beach.

Claims

1. blue crab cultivation device, mainly formed by fish culture net cage, dead lever, it is characterized in that described fish culture net cage comprises large cage (2) and small-sized net cage (5), large cage (2) is cuboid, both sides external or four sides fixedly have foam floating block (6), large cage (2) is other to be provided with 2 or 4 dead levers (1), and limit for height projection (7) is arranged at dead lever (1) top, and large cage (2) links to each other with dead lever (1) by lifting ring (3); Be provided with 1-10 small-sized net cage (5) that is fixed on large cage (2) bottom in the large cage (2), small-sized net cage (5) is that the length and width height is the tetragonal body of 28-35cm * 15-20cm * 15-20cm, and sizing grid is 0.5-1cm * 0.5-1cm.