阅读说明：本技术 一种沙塘鳢养殖用网箱装置 (Odontobutis obscura is bred and uses net cage device ) 是由 任艳 马琴 刘怡然 胡少迪 谢德兵 王辉 李波 朱思华 于 2021-02-02 设计创作，主要内容包括：本发明公开了一种沙塘鳢养殖用网箱装置,包括网箱、锥形体、沉子、绳索,所述网箱为底部网片和周边网片缝合而成,网片上设置多个圆孔,圆孔边缘与扇形网片缝合形成顶部封闭的内嵌锥形体,所述沉子缝合在网箱底部周边,使网箱伸展在水体中；所述绳索穿在网箱顶部周边,绳索尾部用于固定网箱。本发明的网箱装置结构牢固、简单,使用寿命长,适宜规格多,使用范围广,便于养殖过程中日常管理,便于随时、定量捕捞,降低捕捞强度及鱼体捕捞胁迫,提高捕捞效率；同时满足沙塘鳢幼鱼及成鱼对隐蔽生境需求,降低沙塘鳢的空间竞争,增加沙塘鳢对饵料生物的摄食水平,并降低能耗,促进生长。(The invention discloses a net cage device for culturing odontobutis obscura, which comprises a net cage, a conical body, a sinker and a rope, wherein the net cage is formed by sewing a bottom net sheet and peripheral net sheets, a plurality of round holes are arranged on the net sheets, the edges of the round holes are sewn with a fan-shaped net sheet to form an embedded conical body with a closed top, and the sinker is sewn on the periphery of the bottom of the net cage to ensure that the net cage is stretched in a water body; the rope is threaded on the periphery of the top of the net cage, and the tail of the rope is used for fixing the net cage. The net cage device has firm and simple structure, long service life, multiple suitable specifications and wide application range, is convenient for daily management in the culture process, is convenient for timely and quantitative fishing, reduces the fishing strength and the fishing stress of fish bodies, and improves the fishing efficiency; meanwhile, the requirements of the odontobutis obscurus on the hidden habitat are met, the space competition of the odontobutis obscurus is reduced, the feeding level of the odontobutis obscurus on bait organisms is increased, the energy consumption is reduced, and the growth is promoted.)

1. The utility model provides a box with a net device is used in odontobutis obscura breed, includes box with a net, cone, sinker and rope, its characterized in that: the bottom of the net cage is circular or polygonal, a plurality of conical bodies are uniformly distributed on the bottom surface and the side surfaces of the net cage, the pointed tops of the conical bodies are closed, and the side surfaces of the conical bodies are composed of fan-shaped net sheets.

2. The device of claim 1, wherein the net cage device for culturing odontobutis obscura comprises: the conical body pinnacle on the side surface of the net cage faces to the direction consistent with the radius direction of the bottom surface of the net cage, and the conical body pinnacle on the bottom surface of the net cage faces to the direction vertical to the bottom surface of the net cage.

3. The device of claim 1 or 2, wherein the net cage device for culturing odontobutis obscura comprises: the bottom surface and the side surface of the net cage are provided with round holes, and the edges of the round holes are connected with the fan-shaped net sheet to form the conical body.

4. The device of claim 3, wherein the net cage device for culturing odontobutis obscura comprises: the side length of the side of the conical body is a, and a is more than or equal to 5cm and more than or equal to 30 cm.

5. The device of claim 4, wherein the net cage device for culturing odontobutis obscura comprises: the conical bodies are arranged on the side surface of the net cage in an equidistant array, the center distance between the conical bodies is b, and b is larger than or equal to a.

6. The device of claim 1, wherein the net cage device for culturing odontobutis obscura comprises: the height c of the conical body array on the side surface of the net cage is not more than the whole height of the net cage

7. The device of claim 1, wherein the net cage device for culturing odontobutis obscura comprises: and a mesh cover is arranged at the top of the net cage.

Technical Field

The invention belongs to the technical field of aquaculture, relates to an odontobutis obscura culture technology, and particularly relates to a net cage device for odontobutis obscura culture.

Background

The odontobutis obscurus is benthic carnivorous fish, and in natural water bodies and aquaculture water bodies, the odontobutis obscurus is often subjected to the vogue predation of bait organisms at hidden places such as aquatic plants, stones, gaps and the like, so that the odontobutis obscurus has strong requirements on hidden habitats. At present, Odontobutis obscura is mostly a polyculture variety, is not convenient for fishing at any time, and the bottom of a culture water body is uneven, various submerged plants are often planted, the operation of pulling a net is not convenient, and the fishing efficiency is lower. Odontobutis obscura can be successfully cultured in the net cage, but the predation rate is low and the growth is slow.

Disclosure of Invention

Currently, there are major problems in the prior art including:

(1) the odontobutis obscurus in the mixed culture mode has low density and less quantity, and is not convenient for timely and sufficient fishing.

(2) The bottom of the pond is uneven, the net pulling fishing is inconvenient in the harvesting season, the ground cage fishing rate is not high, the complete fishing of the odontobutis obscurus is not facilitated, and the fishing strength is greatly increased.

(3) The net cage culture space is small, the intraspecific competition of the odontobutis obscura is increased, the encounter rate of the odontobutis obscura and bait organisms is greatly increased, the anti-predation capacity of the bait organisms is increased, and the predation and growth of the odontobutis obscura are not facilitated. The complexity of the habitat is increased by adding the biological floating bed, but the aquatic plant in the floating bed has a short growth period and large biomass change, is difficult to manage, easily causes the problems of decay, water quality deterioration, fish oxygen deficiency and the like of the aquatic plant, and is not favorable for long-term and large-scale utilization.

In order to solve the problems, the invention provides a net cage device for culturing odontobutis obscura, which mainly comprises: the net cage comprises a net cage body, conical bodies, sinkers and ropes, wherein the bottom of the net cage body is circular or polygonal, a plurality of conical bodies are uniformly arranged on the bottom surface and the side surfaces of the net cage body, the pointed tops of the conical bodies are closed, the side surfaces of the conical bodies are composed of fan-shaped net sheets, the sinkers are fixed on the periphery of the bottom of the net cage body at intervals of about 1 meter, the net cage body is stretched in a water body, the ropes penetrate through the periphery of the top of the net cage body, the length of the ropes is larger than that of the periphery of the top of the net cage body, the thickness of the ropes is adjusted according to the size of.

Furthermore, the conical body vertex on the side surface of the net cage faces to the direction consistent with the radius direction of the bottom surface of the net cage, and the conical body vertex on the bottom surface of the net cage faces to the direction perpendicular to the bottom surface of the net cage.

Furthermore, round holes are formed in the bottom surface and the side surface of the net cage, and the edges of the round holes are connected with the fan-shaped net sheets to form the conical body.

Further, the side length of the side of the conical body is a, and the height of the conical body is30cm≥a≥5cm。

Furthermore, the conical bodies are arranged on the side surface of the net cage in an equidistant array, the center distance between the conical bodies is b, and b is larger than or equal to a.

Further, the height c of the conical body array on the side surface of the net cage does not exceed the integral height of the net cage

Furthermore, a net cover is arranged at the top of the net cage or the net cover is not arranged.

Compared with a cultivation net cage without a conical body, the bottom surface and the side surfaces of the net cage are provided with the plurality of conical bodies, so that the problem that the cultivation habitat of the net cage is simple and is not beneficial to the cultivation of odontobutis obscurus can be solved. The culture net cages are separated into a plurality of small environments by the conical bodies, the complexity of the habitat structure of the net cages is increased, odontobutis obscurus groups are hidden at the positions of the conical bodies, the meeting rate of odontobutis obscurus individuals is reduced, the space competition of the odontobutis obscurus is favorably reduced, the meeting rate of the odontobutis obscurus and bait organisms can be reduced by the complex habitat structure, the anti-predation capacity of the bait organisms is reduced, the fouling capture rate of predators is improved, and the predation and growth of the odontobutis obscurus are promoted. The aquaculture net cage provided with the conical body greatly relieves the demand on the use amount of floating bed organisms, and can be used for a long time and on a large scale.

Meanwhile, the odontobutis obscurus is convenient to catch by combining with the culture net cage at any time, the problem that the odontobutis obscurus is difficult to catch is solved, the catching strength and the catching stress degree of the fish body are reduced, and the odontobutis obscurus is beneficial to culture.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a diagram showing a structure of a net cage according to an embodiment of the present invention;

FIG. 2 is a schematic view of the arrangement of circular holes having the same diameter as the bottom surface of the cone according to the embodiment of the present invention;

Detailed Description

The present invention will now be described in detail with reference to the drawings, wherein the specific embodiments and descriptions are provided for illustration only and not for the purpose of limiting the invention.

As shown in figure 1, the invention discloses a net cage device for culturing odontobutis obscura, which comprises a net cage 1, a conical body 2, a sinker 3 and a rope 4; the bottom surface of the net cage 1 is a circular or polygonal net sheet, the net cage 1 is cylindrical or polygonal columnar, the bottom and the side surfaces of the net cage 1 are formed by sewing the net sheet, the mesh size of the net sheet is adjusted according to the specification of a fish body to be placed, a plurality of round holes cut into the diameter a are arranged on the net sheet on the bottom surface and the side surface of the net cage 1, the edges of the round holes are sewn with the fan-shaped net sheet to form an embedded bottomless cone-shaped body 2, the side length of the cone-shaped body 2 is a, and the height30cm≥a≥5cm。

As shown in FIG. 2, the conical bodies 2 are arranged in an equidistant array, the distance between the conical bodies 2 is b, b is larger than or equal to a, and the height c of the conical body array arranged on the side surface of the box body does not exceed 2/3 of the whole height of the net cage.

Sinkers 3 are sewn at the periphery of the bottom of the net cage 1, and the distance between the sinkers is about 1 meter, so that the net cage is stretched in the water body.

The top of the net cage is provided with a common net sheet or is not sewed with the net sheet, the rope 4 penetrates through the periphery of the top of the net cage, the length of the rope is larger than the perimeter of the top of the net cage, the thickness of the rope is adjusted according to the size of the net cage, four opposite angles are selected for knotting, and part of the rope is reserved for fixing the net cage or facilitating the lifting of the net cage.

In some embodiments, according to the use requirement, a mesh sheet with proper meshes and materials is selected, and the fan-shaped mesh sheet and the circular hole of the mesh sheet are sutured to form an embedded vertebral body; sewing the sinker, wherein the size of the sinker can be adjusted according to the size of the net cage; and (3) threading the top rope of the net cage, knotting, keeping the rope with proper length, placing the net cage at a preset position, fixing the rope, stretching the net cage as far as possible, and then putting odontobutis obscurus individuals and bait organisms.

The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and scope of the present invention should be included in the present invention.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.