Branchiostoma brevis enhancement and release effect evaluation device
By designing a suitable net basket and funnel tube structure for amphioxus, the problems of escape and insufficient water exchange in existing devices were solved, enabling a more accurate assessment of the release effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FISHERIES RESEARCH INSTITURE OF FUJIAN
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-17
AI Technical Summary
Existing devices cannot accurately assess the impact of the environment on the growth of amphioxus when evaluating release sites, and there are problems such as high escape probability or insufficient water exchange.
A device for evaluating the effects of amphioxus stock enhancement and release was designed, comprising a net basket, a silk screen basket, a trumpet tube, and a top surface of the silk screen. The trumpet tube has no mesh, and the inner diameter of the outer side of the cone tube gradually increases to improve water exchange efficiency. The mesh count of the silk screen basket is moderate to prevent fish from escaping.
It improves the efficiency of oxygen and waste exchange between internal and external water bodies, making the internal environment of the screen basket more similar to the external environment, thus ensuring the accuracy of the assessment results.
Smart Images
Figure CN224124974U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cotton sliver tube transfer, and in particular to a device for evaluating the effect of amphioxus propagation and release. Background Technology
[0002] Amphioxus (or Lancelet) belongs to the phylum Chordata, subphylum Cepholochordata, class Amphioxi, order Amphioxiforms, and family Amphioxidae. Amphioxus appeared as early as 520 million years ago, representing a transitional type between invertebrates and vertebrates, and serving as an ancestral prototype of vertebrates. There are approximately 31 extant species of amphioxus worldwide, mainly distributed in vast sea areas between 40°S and 48°N latitude, including tropical, subtropical, and temperate regions along the Atlantic, Indian, and Pacific Oceans, as well as the waters surrounding some islands. Most amphioxus live in relatively calm waters at depths of 8–16 m, with temperatures ranging from 12–30°C, salinity of 21–30, and pH values of 8.09–8.18. They thrive in waters with a mixture of medium and fine sand, clear water quality, and abundant plankton. Although amphioxus can swim, they spend most of their time buried in the sand or mud at the bottom of the water, with only their heads exposed. They are more active at night, using the alternating contractions of their muscle segments to briefly stay in the seawater. When foraging, they extend the front of their bodies out of the sand or gravel surface to filter food particles such as diatoms that flow through their gill slits.
[0003] In recent years, due to environmental pollution and overfishing, the habitat of the amphioxus has been severely damaged, and its numbers are declining in all distribution areas worldwide. As a national second-class protected aquatic wild animal, the amphioxus is of great significance for protecting biodiversity, restoring aquatic biological resources, and repairing and improving the aquatic ecological environment.
[0004] When studying the impact of the release site environment on the survival of amphioxus, it is necessary to place the amphioxus in a designated location and raise them for a period of time before assessing the impact of the environment on their survival rate and condition. Current experiments use ordinary aquaculture net cages. Net cages with larger mesh sizes have an increased probability of amphioxus escaping through the mesh, resulting in too many escaping amphioxus during retrieval. Conversely, net cages with smaller mesh sizes have insufficient water exchange with the outside environment, leading to a significant decrease in oxygen levels and a higher waste content inside the cage. This creates a large difference between the internal and external environments, making it impossible to accurately assess the impact of the release site on amphioxus growth. Utility Model Content
[0005] The present invention aims to solve the above problems by providing a device for evaluating the effect of amphioxus stock enhancement and release, which solves the problem that existing devices cannot accurately evaluate the impact of release sites on the growth of amphioxus.
[0006] A device for evaluating the effect of amphioxus stock enhancement and release includes: a net basket, a silk screen basket, a trumpet tube, and a top surface of the silk screen. A first opening is formed on the top of the net basket. The silk screen basket is located inside the net basket and is fixedly connected to the net basket. A second opening is formed on the top of the silk screen basket. The top surface of the silk screen is located above the silk screen basket and covers the second opening. The trumpet tube passes through the top surface of the silk screen and is fixedly connected to the top surface of the silk screen. The enlarged part of the trumpet tube is located outside the silk screen basket.
[0007] Preferably, the trumpet tube includes a tapered tube and a pipe, the tapered tube and the pipe are integrally formed, the inner diameter of the tapered tube gradually increases at the end away from the pipe, and the length of the pipe is greater than or equal to 30 centimeters;
[0008] The top surface of the screen has an installation hole, and the outer side of the pipe fits into the installation hole.
[0009] Preferably, the wire mesh basket includes a mesh surface and a first frame rod. Both the wire mesh basket and the sieve basket are cuboids. The first frame rod is located on the edge of the wire mesh basket, and the mesh surface is located on the face of the wire mesh basket. The mesh surface is fixedly connected to the wire mesh basket, and both the wire mesh basket and the sieve basket have an opening only at the top.
[0010] Preferably, it further includes a first binding strap, each side of the sieve basket is connected to at least one first binding strap, the first binding strap passes through the mesh basket, and the first binding strap is used to fix the sieve basket and the mesh basket.
[0011] Preferably, it also includes a square frame, the wire basket is located inside the square frame, the square frame is a cuboid, the square frame includes a second side frame rod, the second side frame rod is located on the edge of the square frame, and the first side frame rod and the second side frame rod correspond one-to-one and are fixedly connected.
[0012] Preferably, the square frame further includes a reinforcing rod, the two ends of which are fixedly connected to two adjacent and parallel second side frame rods, and part of the first strap is tied to the second side frame rod.
[0013] Preferably, the square frame further includes a hoisting rod and a hoisting ring, with the top of the vertical second frame rod integrally formed with the hoisting rod, and the top of the hoisting rod being fixedly connected to the hoisting ring.
[0014] It also includes a second strap that secures the horn tube and the hoisting rod, with the upper second frame rod supporting the horn tube.
[0015] Preferably, it also includes a second strap, which secures the horn tube and the wire mesh basket, with the horn tube supported above the wire mesh basket.
[0016] Preferably, the mesh size of the sieve basket and the top surface of the sieve is 60 to 100 mesh.
[0017] Preferably, the device further includes a filter screen that covers the large-diameter end of the conical tube and is fixedly connected to the conical tube, wherein the mesh size of the filter screen is 5 to 15 mesh.
[0018] Preferably, both the wire mesh basket and the square frame are made of corrosion-resistant metal.
[0019] This invention has the following advantages: the trumpet tube does not have a small mesh screen, which avoids the screen from obstructing the flow between the inner and outer water bodies and improves the efficiency of oxygen and waste exchange between them; the outer inner diameter of the cone tube is large, which increases the contact area between the inner and outer water bodies and further improves the exchange efficiency between them; the improved efficiency of oxygen and waste exchange between the inner and outer water bodies makes the environment inside the screen basket closer to the external environment, making the research results of amphioxus breeding and release more accurate. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.
[0021] Figure 1 : A top view of the structure of this utility model;
[0022] Figure 2 : A schematic diagram of the front sectional view of this utility model;
[0023] Figure 3 :exist Figure 2 A magnified schematic diagram of the local structure at point A;
[0024] Figure 4 : A schematic diagram of the main structure of this utility model;
[0025] Figure 5 :exist Figure 4 A magnified schematic diagram of the structure at point B in the middle. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and examples:
[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example
[0030] like Figures 1 to 5 As shown, this embodiment provides a device for evaluating the effect of amphioxus stock enhancement and release, including: a net basket 1, a silk screen basket 3, a trumpet tube 5, and a silk screen top surface 31. A first opening is formed at the top of the net basket 1. The silk screen basket 3 is located inside the net basket 1 and fixedly connected to it. A second opening is formed at the top of the silk screen basket 3. The silk screen top surface 31 is located above the silk screen basket 3 and covers the second opening. The trumpet tube 5 passes through the silk screen top surface 31 and is fixedly connected to it. The enlarged portion of the trumpet tube 5 is located outside the silk screen basket 3. The silk screen top surface 31 and the silk screen basket 3 can be fixed using various methods such as zippers, Velcro, and stitching.
[0031] Preferably, the horn tube 5 includes a tapered tube 51 and a pipe 52, which are integrally formed, and the inner diameter of the tapered tube 51 gradually increases at the end away from the pipe 52.
[0032] More preferably, the length of the pipe 52 is greater than or equal to 30 centimeters, thereby reducing the probability that the amphioxus will leave the pipe 52 upwards.
[0033] More preferably, the pipe 52 is a straight pipe or a bend.
[0034] Preferably, the top surface 31 of the screen is formed with a mounting hole 310, and the outer side of the pipe 52 is fitted with the mounting hole 310.
[0035] Preferably, the wire mesh basket 1 includes a mesh surface 11 and a first side frame rod 12. Both the wire mesh basket 1 and the sieve basket 3 are cuboids. The first side frame rod 12 is located on the edge of the wire mesh basket 1, and the mesh surface 11 is located on the surface of the wire mesh basket 1. The mesh surface 11 is fixedly connected to the wire mesh basket 1. Both the wire mesh basket 1 and the sieve basket 3 have openings only at the top.
[0036] Preferably, it also includes a first binding strap 4, each side of the sieve basket 3 is connected to at least one first binding strap 4, the first binding strap 4 passes through the wire mesh basket 1, and the first binding strap 4 is used to fix the sieve basket 3 and the wire mesh basket 1.
[0037] Preferably, it also includes a square frame 2, the wire basket 1 is located inside the square frame 2, the square frame 2 is a cuboid, the square frame 2 includes a second side frame rod 20, the second side frame rod 20 is located on the edge of the square frame 2, and the first side frame rod 12 and the second side frame rod 20 correspond one-to-one and are fixedly connected.
[0038] Preferably, the square frame 2 further includes a reinforcing rod 23, the two ends of which are fixedly connected to two adjacent and parallel second side frame rods 20. Part of the first binding strap 4 is tied to the second side frame rod 20. The square frame 2 is located outside the wire mesh basket 1. When impacted by a foreign object, the square frame 2 will be the first point of impact, thus protecting the structure of the wire mesh basket 1.
[0039] More preferably, the square frame 2 is welded and fixed to the protective mesh basket 1.
[0040] Preferably, the square frame 2 further includes a hoisting rod 21 and a hoisting ring 22, the top of the vertical second side frame rod 20 is integrally formed with the hoisting rod 21, and the top of the hoisting rod 21 is fixedly connected to the hoisting ring 22.
[0041] More preferably, it also includes a second strap 7, which secures the horn tube 5 and the hoisting rod 21, and the upper second frame rod 20 supports the horn tube 5.
[0042] Preferably, it also includes a second strap 7, which secures the horn tube 5 and the wire mesh basket 1, with the horn tube 5 supported above the wire mesh basket 1.
[0043] Preferably, the mesh size of the sieve basket 3 and the top surface 31 of the sieve is 60 to 100 mesh, and the mesh size of the sieve basket 3 and the top surface 31 of the sieve is smaller than the size of the amphioxus 8, thereby preventing the amphioxus 8 from passing through the sieve basket 3 and the top surface 31 of the sieve and leaving between the sieve basket 3 and the top surface 31 of the sieve.
[0044] More preferably, the mesh size of the sieve basket 3 and the top surface 31 of the sieve is 80 mesh.
[0045] Preferably, the system also includes a filter screen 6, which covers the large-diameter end of the cone tube 51 and is fixedly connected to the cone tube 51. The filter screen 6 has a mesh size of 5 to 15 and is used to block external pollutants. The filter screen 6 is secured to the outside of the cone tube 51 or pipe 52 using cable ties, thereby fixing the filter screen 6 to the horn tube 5.
[0046] More preferably, the mesh number of filter screen 6 is 10 mesh.
[0047] Preferably, both the wire mesh basket 1 and the square frame 2 are made of corrosion-resistant metal. The corrosion-resistant metal can be stainless steel or aluminum alloy.
[0048] In use: Place the silk sieve basket 3 inside the wire mesh basket 1. Each side of the silk sieve basket 3 is secured with multiple first binding straps 4. The first binding straps 4 are tied to the wire mesh basket 1 and / or the square frame 2, thereby ensuring that each side of the silk sieve basket 3 is in contact with its corresponding wire mesh surface 11, maintaining the cuboid shape of the silk sieve basket 3. The first binding straps 4 can be arranged as follows: Figure 3 The surface made of sieve silk that passes through the sieve silk basket 3 can also be fixed to the outside of the surface of the sieve silk basket 3 by sewing or Velcro.
[0049] After placing fine sand 9 into the sieve basket 3, use a hook to attach the hanging ring 22 and lower the square frame 2 from the boat or platform until part of the sieve basket 3 is submerged in water. Then, put the amphioxus 8 into the sieve basket 3 and fix the top surface 31 of the sieve basket 3 to the sieve basket 3, thereby blocking the opening above the top surface 31 of the sieve basket 3 and preventing the amphioxus 8 from escaping from the opening.
[0050] Then, insert the pipe 52 into the inside of the screen basket 3 through the mounting hole 310, use the second strap 7 to tie and fix the cone tube 51 that is leaking outside the screen basket 3 to the mesh basket 1 and / or square frame 2, and then fix the filter screen 6 to the outside of the cone tube 51.
[0051] Finally, the hook is moved downwards, and the square frame 2 continues to fall. After reaching the specified depth, the hook stops moving, so that the square frame 2 and the silk basket 3 remain at the specified depth.
[0052] During operation: Water from the outside of the sieve basket 3 exchanges with the inside through the trumpet tube 5, thereby discharging waste from the sieve basket 3 and increasing the oxygen content of the internal water. Since the amphioxus 8 has poor swimming ability, it generally does not swim upwards for very long distances. The number of amphioxus 8 that can swim upwards through the pipe 52 (over 30 cm) is negligible and will not affect the subsequent population of amphioxus 8. The trumpet tube 5 does not have a sieve with small mesh openings, avoiding obstruction of the flow between the inner and outer water bodies and improving the efficiency of oxygen and waste exchange. Simultaneously, the inner diameter of the cone tube 51 gradually increases, thereby increasing the contact area between the water bodies and further improving the exchange efficiency between the inner and outer water bodies.
[0053] After use: After the specified experimental time, the hook lifts the square frame 2 out of the water, and the top surface 31 of the sieve is opened manually to study the survival status and survival rate of the amphioxus inside the sieve basket 3.
[0054] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.
Claims
1. An amphioxus propagation and releasing effect evaluation device, characterized in that, include: The net basket (1), the sieve basket (3), the trumpet tube (5) and the top surface of the sieve (31) are provided. A first opening is formed on the top of the net basket (1). The sieve basket (3) is located inside the net basket (1) and is fixedly connected to the net basket (1). A second opening is formed on the top of the sieve basket (3). The top surface of the sieve (31) is located above the sieve basket (3) and covers the second opening. The trumpet tube (5) passes through the top surface of the sieve (31) and is fixedly connected to the top surface of the sieve (31). The enlarged part of the trumpet tube (5) is located outside the sieve basket (3).
2. The device for evaluating the effect of the reproduction and release of amphioxus according to claim 1, characterized in that: The horn tube (5) includes a tapered tube (51) and a pipe (52), which are integrally formed. The inner diameter of the tapered tube (51) gradually increases at the end away from the pipe (52), and the length of the pipe (52) is greater than or equal to 30 centimeters. The top surface (31) of the screen is formed with an installation hole (310), and the outside of the pipe (52) is fitted with the installation hole (310).
3. The device for evaluating the effect of the brine shrimp breeding and releasing according to claim 1, characterized in that: The wire mesh basket (1) includes a mesh surface (11) and a first side frame rod (12). Both the wire mesh basket (1) and the sieve basket (3) are cuboids. The first side frame rod (12) is located on the edge of the wire mesh basket (1). The mesh surface (11) is located on the face of the wire mesh basket (1). The mesh surface (11) is fixedly connected to the wire mesh basket (1). Both the wire mesh basket (1) and the sieve basket (3) have an opening only at the top.
4. The device for evaluating the effect of the brine shrimp breeding and releasing according to claim 3, characterized in that: It also includes a first strap (4), each side of the sieve basket (3) is connected to at least one first strap (4), the first strap (4) passes through the wire mesh basket (1), and the first strap (4) is used to fix the sieve basket (3) and the wire mesh basket (1).
5. The device for evaluating the effect of the brine shrimp breeding and releasing according to claim 4, characterized in that: It also includes a square frame (2), the wire basket (1) is located inside the square frame (2), the square frame (2) is a cuboid, the square frame (2) includes a second side rail (20), the second side rail (20) is located on the edge of the square frame (2), the first side rail (12) and the second side rail (20) correspond to each other and are fixedly connected.
6. The device for evaluating the effect of the brine shrimp breeding and releasing according to claim 5, characterized in that: The square frame (2) also includes a reinforcing rod (23), the two ends of which are fixedly connected to two adjacent and parallel second side frame rods (20), and part of the first strap (4) is tied to the second side frame rod (20).
7. The device for evaluating the effect of the reproduction and releasing of the amphioxus according to claim 5, characterized in that: The square frame (2) also includes a hoisting rod (21) and a lifting ring (22). The top of the vertical second side frame rod (20) is integrally formed with the hoisting rod (21), and the top of the hoisting rod (21) is fixedly connected to the lifting ring (22). It also includes a second strap (7) that secures the horn tube (5) and the hoisting rod (21), with the upper second frame rod (20) supporting the horn tube (5).
8. The device for evaluating the effect of the reproduction and releasing of the amphioxus according to claim 1, characterized in that: It also includes a second strap (7) that secures the horn tube (5) and the wire mesh basket (1) above the wire mesh basket (1).
9. The device for evaluating the effect of the reproduction and releasing of the amphioxus according to claim 1, characterized in that: The mesh count of the silk basket (3) and the top surface (31) of the silk is 60 to 100 mesh; It also comprises a filter screen (6) covering the large-diameter end of the cone tube (51) and fixedly connected with the cone tube (51), the mesh number of the filter screen (6) being 5-15 meshes.
10. The device for evaluating the effect of the reproduction and releasing of the amphioxus according to claim 5, characterized in that: The net basket (1) and the square frame (2) are both made of corrosion-resistant metal.