Device for inducing squid to attach and lay eggs and method of using the same

Abstract

This invention relates to a device and method for inducing squid to attach and spawn, addressing the problem that artificial squid reefs used to improve the spawning environment for squid still have significant room for improvement in terms of attractiveness and timeliness. The device includes a frame-type base with a box at the top. Inside the box are several parallel rollers arranged sequentially. Each roller is wound with a hemp rope net for squid to attach and spawn, and a weight is suspended from the bottom of the hemp rope net. Between adjacent rollers, the preceding roller has a suspension rope suspended from the top of the box, and the following roller has a stop around its circumference. A swingable opening / closing block is located on the side of the stop. A pull rope is connected between the preceding roller and the opening / closing block. The suspension rope and the pull rope are wound in the same direction on the preceding roller, and when the suspension rope is taut, the pull rope is taut. This invention utilizes sequentially unfolded hemp rope nets to maximize the egg-attaching efficiency of each net and prolong the duration of attracting squid to attach and lay eggs, thereby improving the incubation environment for the needleless squid.

Description

Technical Field

[0001] This invention relates to the field of aquaculture technology, and in particular to a device for inducing squid to attach and lay eggs, and a method for using the same. Background Technology

[0002] The Japanese spiny squid (Sepiella maindroni de Rochebrune) is an annual, medium-sized squid, commonly known as cuttlefish. It grows quickly and has delicious flesh, making it a popular seafood product. The Japanese spiny squid is distributed along the coasts of the Northwest Pacific and North Indian Oceans. In my country, its main fishing grounds are along the coasts of Zhejiang and Fujian provinces, with peak annual yields exceeding 80,000 tons, making it an important economic species globally. The waters near Zhoushan in Zhejiang province are a major production area for the Japanese spiny squid.

[0003] The Japanese squid (Sepia spp.) prefers to spawn on substrates smaller than 7 mm in diameter. In its natural habitat, it favors spawning on gorgonians, but the slow growth of gorgonians cannot provide a long-term, stable spawning environment. Researchers have improved the spawning environment for the Japanese squid by deploying artificial squid reefs. They are continuously refining the structure of these artificial reefs to more effectively improve and stabilize the spawning environment. Summary of the Invention

[0004] The purpose of this invention is to address the problem that the use of artificial squid reefs to improve the spawning environment of squid still has significant room for improvement in terms of attractiveness and timeliness for squid. This invention provides a device and method for inducing squid to attach and spawn, which maximizes the effectiveness of the attachment substrate by intermittently unfolding attachment nets, thereby maximizing the improvement of the incubation environment for needleless squid.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a device for inducing squid to attach and lay eggs, including a frame-type base, a box set on the top of the base, a number of rollers arranged parallel to each other and in sequence inside the box, and a hemp rope net for squid to attach and lay eggs wound on each roller, and a weight suspended at the bottom end of the hemp rope net.

[0006] Between two adjacent rollers, the front roller is provided with a suspension rope suspended from the top of the box, and the rear roller is provided with a stop block around its circumference. A swingable opening and closing block is provided on the side of the stop block. A pull rope is provided between the front roller and the opening and closing block. The winding direction of the suspension rope and the pull rope on the front roller is the same, and when the suspension rope is taut, the pull rope is in an untaut state.

[0007] In this device, for each set of rollers arranged sequentially, the hemp rope net of the foremost roller is in an unfolded state when the base sinks to the bottom, thereby attracting squid to attach and lay eggs. When the number of eggs laid increases, the weight of the hemp rope net exceeds the traction force of the suspension rope, which stretches or even breaks the suspension rope, causing the rope to tighten and unlock the next roller, allowing the hemp rope net of the next roller to unfold and attract squid to attach and lay eggs. This process is repeated, gradually unfolding the hemp rope net of each roller, maximizing the egg-attaching efficiency of each hemp rope net and prolonging the duration of the effect of attracting squid to attach and lay eggs.

[0008] Preferably, the stop block, opening and closing block and the pull rope are arranged at one end of the roller, and the suspension rope is arranged at the other end of the roller.

[0009] Preferably, the upper end of the lifting rope is adjusted to the length and then fixed to the top of the box using a fixing plate.

[0010] Preferably, the suspension rope is an elastic rope or a breakable lead wire rope.

[0011] Preferably, the opening and closing block is a lever structure, with a pin passing through the middle of the opening and closing block, one end of the opening and closing block abutting against the stop block, and the other end having a rope fixing hole.

[0012] Preferably, two sets of rollers are symmetrically arranged inside the housing, with the two sets of rollers arranged from the middle of the housing to opposite outer sides.

[0013] Preferably, the hemp rope mesh is mixed with coral powder during the hemp rope twisting process.

[0014] Preferably, the base is a trapezoidal platform structure with a larger bottom and a smaller top, and the bottom surface of the base is larger than the top surface of the base.

[0015] Preferably, each side of the top surface of the base is connected to a lifting ring by a diagonal cable, and a float for marking the position is suspended above the lifting ring. This facilitates the positioning and retrieval of the base.

[0016] A method of using a device for inducing squid to attach and lay eggs, comprising the following steps:

[0017] S1. Wind the hemp rope netting onto each roller, adjust the length of the suspension rope and the pull rope to ensure that when the hemp rope netting is unwound, the suspension rope is taut while the pull rope is not taut, and then submerge the entire base to the bottom of the water.

[0018] S2, the hemp rope netting wound on the foremost roller unfolds: the hemp rope netting wound on the foremost roller unfolds first and then the base is submerged in the water, or after the base is submerged in the water, the foremost roller is unlocked by remotely pulling the rope.

[0019] S3, after the squid lays its eggs on the foremost rope net, the weight gradually increases until the weight of the rope net overcomes the tension of the hanging rope, tightens the rope, pulls the opening and closing block away from the stop block of the next roller, unlocks the next roller, and unfolds the rope net of the next roller.

[0020] S4. Repeat the process of S3 until all the hemp rope mesh on the rollers is unfolded.

[0021] This invention utilizes sequentially unfolded hemp rope nets to maximize the egg-attaching efficiency of each net and prolong the duration of attracting squid to attach and lay eggs, thereby improving the incubation environment for the needleless squid. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a side view half-sectional structural diagram of the present invention.

[0024] Figure 2 This is a top-view half-section structural diagram of the present invention.

[0025] Figure 3 The present invention Figure 1 Cross-sectional view of section AA.

[0026] In the diagram: 1. Base, 2. Box body, 3. First roller, 31. Second roller, 32. Third roller, 33. Fourth roller, 34. Stop block, 35. Suspension rope groove, 36. Pull rope groove, 4. Hemp rope mesh, 41. Weight, 5. Opening and closing block, 51. Pin, 6. Fixed pulley, 7. Pull rope, 8. Suspension rope, 81. Fixed pressure plate, 9. Diagonal cable, 10. Lifting ring, 11. Float. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0028] Example: A device for inducing squid to attach and lay eggs, such as... Figure 1 , 2As shown. This device includes a frame-type base 1, which is a trapezoidal platform structure with a larger bottom and a smaller top, with the bottom surface of the base larger than the top surface. Each side of the top surface of the base 1 is connected to a hanging ring 10 via a diagonal cable 9, and a float 11 for marking positions is suspended above the hanging ring. The structures on the base 1 are arranged symmetrically from left to right, and a box 2 is located on the top of the base 1. Taking the left half of the base as an example, the left half of the box 2 contains several parallel rollers arranged sequentially. From the middle of the box to the left side, they are, in order, the first roller 3, the second roller 31, the third roller 32, and the fourth roller 33. Each roller is wound with a hemp rope net 4 for squid to attach and lay eggs. A weight 41 is suspended at the bottom of the hemp rope net 4. During the hemp rope twisting process, coral powder is mixed into the hemp rope net 4.

[0029] Between two adjacent rollers, the front roller is equipped with a suspension rope 8 suspended from the top of the housing 2, and the rear roller is equipped with a stop block 34 around its circumference. A swingable opening and closing block 5 is located on the side of the stop block 34. A pull rope 7 is provided between the front roller and the opening and closing block 5. The winding direction of the suspension rope 8 and the pull rope 7 on the front roller is the same, and when the suspension rope 8 is taut, the pull rope 7 is in an untaut state. Figure 2 , 3 As shown, the stop block 34, the opening and closing block 5, and the pull rope 7 are disposed at one end of the roller, and the suspension rope 8 is disposed at the other end of the roller. A pull rope groove 36 is provided at one end of the roller corresponding to the pull rope 7, and a suspension rope groove is provided at the other end of the roller corresponding to the suspension rope 8.

[0030] Taking the first roller 3 and the second roller 31 as examples, the first roller 3 is equipped with a suspension rope 8 suspended from the top of the housing 2, and the second roller 31 is equipped with a stop block 34 around its circumference. A swingable opening and closing block 5 is provided on the side of the stop block 34. A pull rope 7 is provided between the first roller 3 and the opening and closing block 5. The suspension rope 8 and the pull rope 7 are in the same winding direction on the first roller 3, and when the suspension rope 8 is taut, the pull rope 7 is in an untaut state. Figure 2 , 3 As shown, the stop block 34, the opening / closing block 5, and the pull rope 7 are located at one end of the first roller, and the suspension rope 8 is located at the other end of the first roller. A pull rope groove 36 is formed at one end of the first roller corresponding to the pull rope 7, and a suspension rope groove is formed at the other end of the first roller corresponding to the suspension rope 8. To ensure the direction in which the pull rope 7 pulls the opening / closing block 5, a fixed pulley 6 is provided on the housing 2 for steering the pull rope 7.

[0031] The connection structures between the second roller 31 and the third roller 32, and between the third roller 32 and the first wire roller 33, are the same as the connection structures between the first roller 3 and the second roller 31.

[0032] After adjusting the length of the upper end of the lifting rope 8, it is fixed to the top of the box 2 using a fixing plate 81. The lifting rope is an elastic rubber rope.

[0033] like Figure 1, 3 As shown, the opening and closing block 5 is a lever structure. A pin 51 is inserted through the middle of the opening and closing block. One end of the opening and closing block abuts against the stop block, and the other end is provided with a rope fixing hole.

[0034] The method of using the above-mentioned device includes the following steps:

[0035] S1. Wind the hemp rope netting onto each roller, adjust the length of the suspension rope and the pull rope to ensure that when the hemp rope netting is unwound, the suspension rope is taut while the pull rope is not taut, and then submerge the entire base to the bottom of the water.

[0036] S2, the hemp rope netting wound on the foremost roller unfolds: the hemp rope netting wound on the foremost roller unfolds first and then the base is submerged in the water, or after the base is submerged in the water, the foremost roller is unlocked by remotely pulling the rope.

[0037] S3, after the squid lays its eggs on the foremost rope net, the weight gradually increases until the weight of the rope net overcomes the tension of the hanging rope, tightens the rope, pulls the opening and closing block away from the stop block of the next roller, unlocks the next roller, and unfolds the rope net of the next roller.

[0038] S4. Repeat the process of S3 until all the hemp rope mesh on the rollers is unfolded.

Claims

1. A device for inducing squid to attach and lay eggs, comprising a frame-type base, characterized in that: The top of the base is equipped with a box, and inside the box are several rollers arranged in parallel and sequentially. Each roller is wound with a hemp rope net for squid to attach and lay eggs. A weight is suspended at the bottom of the hemp rope net. Between two adjacent rollers, the front roller is provided with a suspension rope suspended from the top of the box, and the rear roller is provided with a stop block around its circumference. A swingable opening and closing block is provided on the side of the stop block. A pull rope is provided between the front roller and the opening and closing block. The winding direction of the suspension rope and the pull rope on the front roller is the same, and when the suspension rope is taut, the pull rope is in an untaut state.

2. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: The stop block, opening and closing block, and pull rope are located at one end of the roller, and the suspension rope is located at the other end of the roller.

3. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: After adjusting the length of the upper end of the suspension rope, it is fixed to the top of the box using a fixing plate.

4. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: The suspension rope is an elastic rope, or a breakable lead wire rope.

5. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: The opening and closing block is a lever structure, with a pin passing through the middle of the opening and closing block. One end of the opening and closing block abuts against the stop block, and the other end is provided with a rope fixing hole.

6. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: The rollers are arranged symmetrically in two sets inside the box, with the two sets of rollers arranged from the middle of the box to opposite outer sides.

7. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: The hemp rope mesh is mixed with coral powder during the hemp rope twisting process.

8. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: The base is a trapezoidal platform structure that is larger at the bottom and smaller at the top, with the bottom surface of the base being larger than the top surface of the base.

9. The device for inducing squid to attach and lay eggs according to claim 1, characterized in that: Each side of the top surface of the base is connected to a lifting ring by a cable, and a float for marking the position is suspended above the lifting ring.

10. A method of using a device for inducing squid to attach and lay eggs, comprising using the device as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. Wind the hemp rope netting onto each roller, adjust the length of the suspension rope and the pull rope to ensure that when the hemp rope netting is unwound, the suspension rope is taut while the pull rope is not taut, and then submerge the entire base to the bottom of the water. S2, the hemp rope netting wound on the foremost roller unfolds: the hemp rope netting wound on the foremost roller unfolds first and then the base is submerged in the water, or after the base is submerged in the water, the foremost roller is unlocked by remotely pulling the rope. S3, after the squid lays its eggs on the foremost rope net, the weight gradually increases until the weight of the rope net overcomes the tension of the hanging rope, tightens the rope, pulls the opening and closing block away from the stop block of the next roller, unlocks the next roller, and unfolds the rope net of the next roller. S4. Repeat the process of S3 until all the hemp rope mesh on the rollers is unfolded.

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