JP2001231404A - Apparatus for collecting organism living in alga spot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for collecting an organism living in an alga spot including an organism to be adhered to marine algae. SOLUTION: This apparatus for collecting an organism living in an alga spot is constituted of a string-like body 3 suspended in water from the surface of the water, a skeleton assembly structure 5 which is suspended from the string-like body 3 and provided with artificial algae 6 and a netlike bag 7 which freely encircles or encircles and releases the skeleton assembly structure 5. The skeleton assembly structure 5 comprises the artificial algae 6 attached to a netlike mat 8 arranged at the lower part and the netlike bag 7 is seized on a tubular member 10 slidably attached to the outside of the string-like body 3 by a string body 10a. The tubular number 10 is arranged between a pair of upper and lower stop pieces 13 and 14 fixed to the string-like body 3 and the lower stop piece 14 is fixed to a sliding lower limit position of the tubular member 10 for suspending the netlike bag 7 at a fixed lower position. The upper stopping piece 13 is fixed to a sliding upper limit position of the tubular member 10 for raising the netlike bag 7 to a fixed upper position. A cylindrical body having a cover at the bottom part is attached to the bottom of the netlike bag 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seagrass bed inhabiting organism collecting apparatus for collecting organisms such as plankton, juvenile fish, juvenile shrimp, shellfish, etc., which submerge in seawater and sink in seawater.

[0002]

2. Description of the Related Art When creating and expanding a seaweed bed, it is necessary to know the ecology of plankton, juvenile fish, juvenile shrimp and the like that inhabit the place. Various plankton nets for collecting plankton in seawater as one of the ocean survey methods are known, and FIG. 9 shows a collecting device known as a Meteorological Agency type net. This plankton net 1K
Has a conical tubular cloth bag Kn attached to a wire S suspended from the sea via a drawstring R, and a bottom tube Kt for taking out collected living matter at the lower end of the cloth bag Kn. The cloth bag Kn uses sieve silk as a filter cloth.

A conventional plankton collecting apparatus including the above-described net 1K can collect living organisms that move in water, but is not suitable for collecting living organisms that mainly adhere to seaweeds.

The inventor of the present invention has disclosed in Japanese Patent No. 2726115 a net-like mat to which artificial aquatic plants laid on the sea floor are attached. In addition, the applicant of the present invention has disclosed in Japanese Patent Application Laid-Open No. Hei 10-2377843 a plan in which artificial seaweeds are mounted in the sea of a three-dimensional structure having various shapes. All of these play a role in causing artificial seaweed to adhere to spores of natural algae, eggs of living organisms, and the like and grow them.

The present applicant proposes a seagrass bed inhabiting organism collecting apparatus based on the above-described invention and achievements.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object of the present invention is to provide a seaweed bed inhabiting organism collecting apparatus which collects living organisms including living organisms attached to seaweeds.

[0007]

According to the seagrass bed habitat collecting apparatus of the first invention, the seagrass bed habitat which sinks in seawater to collect plankton, juvenile fish, juvenile shrimp and the like living in the seaweed bed. In a biological collecting apparatus, a string-shaped body suspended from the water and suspended in water, a bone assembly structure including an artificial seaweed suspended from the string-shaped body, and the bone assembly structure can be freely surrounded or unenclosed. The artificial seaweed is attached to a net-like mat provided in the lower part of the bone assembly structure, and the net-like bag is a tubular member slidably mounted outside the cord-like body. Locked by a cord, the tubular member is mounted between a pair of upper and lower stop pieces fixed to the cord, and the lower stop piece is the tubular member on which the mesh bag hangs down to a predetermined low position. And the upper stop piece is fixed to the mesh Is fixed to the sliding upper limit position of the tubular member bag rises to a predetermined height position, the tubular body having a cover at the bottom to the bottom surface of the mesh-like body is attached.

The above-mentioned artificial seaweed is formed of a non-toxic material having a specific gravity as small as 0.01 to 0.4 gr / cubic cm, such as polypropylene, as disclosed in Japanese Patent Application Laid-Open No. 2-204517 by the present applicant. It is preferable that the surface is subjected to antifouling treatment. The reticulated mat is formed by reticulating steel rods, and the one disclosed by the present inventor in Japanese Patent No. 2726115 is preferable. The sliding lower limit position of the tubular member in the above is a position at which the reticulated bag body can be reduced to allow the living organisms to adhere to the artificial seaweed, and the sliding upper limit position means that the reticulated bag body is pulled up and attached to the artificial seaweed. And a position where the lifting force applied to the net-like bag is limited to prevent damage. According to the seagrass bed inhabiting organism collecting apparatus, unlike the conventional collecting apparatus, living organisms that adhere to algae and inhabit can be collected. In addition, it is possible to collect living organisms at any depth, not only on the sea floor. Further, since the bone assembly structure is configured to play the role of the weight by the steel bar, collection is easy without being washed away even in a place where water flows.

According to the seagrass bed inhabiting organism collecting apparatus of the second invention, the seagrass bed inhabiting organism collecting apparatus for collecting organisms such as plankton, juvenile fish, juvenile shrimp and the like submerged in seawater and submerged in the seaweed bed. And a conical tubular bag with artificial seaweed suspended from the string through a first annular member, wherein the mesh bag is intermediate. A second annular member is attached to the portion, and the artificial seaweed is attached to a mesh mat provided at the lower portion of the mesh bag, the first annular member is formed to have a larger diameter than the second annular member, A tubular body having a lid at the bottom is provided at the lower end of the mesh bag.

The artificial seaweed and the reticulated mat are the same as those used in the first invention. According to this seagrass bed inhabiting organism collecting apparatus, since the structure is simple and lightweight, living organisms living on the seabed can be easily collected.

According to the third aspect of the present invention, there is provided a seagrass bed inhabiting organism collecting apparatus for collecting plankton, juvenile fish and juvenile shrimp living in the seaweed bed by sinking in seawater. From a string-shaped body suspended from the water, an artificial seaweed device provided with an artificial seaweed suspended from the string-shaped body, and a cylindrical mesh bag that surrounds or unencloses the artificial seaweed device. The artificial seaweed device is configured such that the artificial seaweed is attached to a net-like mat, the net-like mat is attached to a lower portion of the net-like bag, and the net-like bag is slidably mounted outside the cord-like body. The tubular member is fixed to the member by a string via an annular member, the tubular member is mounted between a pair of upper and lower stop pieces fixed to the string, and the lower stop is a predetermined low piece. Sliding lower limit of the tubular member depending on the position The upper stop piece is fixed to the upper sliding position of the tubular member where the mesh bag rises to a predetermined high position, and a tubular body having a lid at the bottom is attached to the bottom surface of the mesh bag. Have been.

[0012] According to the above, living organisms not only at the sea floor but also at any depth can be collected. In addition, the collection work is easy because the structure is simple and lightweight.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a seagrass bed inhabiting organism collecting apparatus according to the present invention. A seaweed bed inhabiting organism collecting apparatus (hereinafter, abbreviated as a collecting apparatus) 1 of the first invention shown in FIGS. 1 to 4 includes a string-shaped wire 3 suspended from the water, a bone assembly structure 5, An artificial seaweed 6 attached to the bone assembly structure 5 to attach living organisms, and a net-like bag 7 for capturing and collecting the living organisms in the vicinity of the collection device 1.

The wires 3 suspend the skeleton structure 5.
It is composed of an engaging portion 3a of the book and a pair of stop pieces, a stop piece 13 fixed to the wire 3 to limit the ascending position of the mesh bag 7 and a stop piece 14 to limit the lower limit position.

The bone assembling structure 5 is configured such that a skeleton forming a hexahedral corner is made substantially upright by an iron bar. The frame is configured to have a weight with an iron bar, thereby preventing the collection device 1 from moving due to the water flow.

In FIG. 3, width B = height H = 80-10
The symbol h is a distance from the bottom of the attachment position of the artificial seaweed 6 and is 5 cm. Bone assembly structure 5
Hooks 3 at four corners of a frame portion 5a forming an upper surface frame of
f is provided and fastened to the grip portion 3a. Frame part 5a
A cross-shaped reinforcing member 5d is provided at the center of the frame so that the vertical movement of the mesh bag 7 does not become a problem due to deformation due to the weight of the skeleton structure 5.

A net-like mat 8 having a mesh formed of metal rods is mounted at a position of the height h = 5 cm below a frame portion 5b forming a side frame of the bone assembling structure 5. Artificial seaweed 6
A large number of leaf-like bodies 6a having a height of 80 to 100 cm and made of, for example, ribbon-shaped polypropylene, which are disclosed by the present applicant in Japanese Patent Application Laid-Open No. 2-204517, are attached. The attachment to the net-like mat 8 is preferably carried out by a retaining piece disclosed in Japanese Patent Application Laid-Open No. Hei 10-237843 or the like.

The reticulated bag 7 is attached to a frame 7a having a rectangular frame at the upper part using a sieve silk as a filtering cloth material, and is formed so as to surround the entire peripheral surface except the upper surface of the bone assembling structure 5. . In a free hanging state in which the frame 7a is not pulled up, the frame 7a is folded at the bottom and reduced so as to fit within the height of the attachment portion of the artificial seaweed 6, that is, about 5 cm from the bottom. The filtering cloth may be any fine material such as kanreisha, morrison, and silk. Also, a nylon net or the like may be used.

As shown in FIG. 4, the bottom surface 7b of the mesh bag 7
A bottom tube 15, which is a tubular body having a lid 15a at the bottom, is easily attached and detached with a fastener 16, for example, a string or a clamp.

A pull cord 10a, which is a cord, is attached to a central portion around the frame 7a. The pull cords 10a slide between a stop piece 13 above the wire 3 and a stop piece 14 below. It is attached to a freely mounted tubular member 10.

When the tubular member 10 is lifted by the stop piece 13, the mesh bag 7 rises above the artificial seaweed 6, which is a predetermined upper sliding limit, and at a position lowered by the stop piece 14. The artificial seaweed 6 which is the sliding lower limit position of
It is configured to be lowered to the mounting height position.

The tubular member 10 is provided with a string-like body 10d communicating with the water. The mesh-like bag 7 is operated so as to bring living organisms close to each other or to capture and collect living organisms and lift them up into the water. When the bag is at or above the upper limit position, the mesh bag 7 is configured so that no lifting force is applied.

The operation of the collection device 1 having the above configuration will be described. FIG. 2 shows a state where the collection device 1 is settled in a seaweed bed underwater. First, the string-shaped body 3 is sent into water, and the collection device 1 is settled. At this time, the cord 10a is loosened, and the tubular member 10 comes into close contact with the
Is in a reduced state. Then, it is landed at a predetermined depth position, for example, the seabed G.

Next, the collection time for the inhabiting organisms such as plankton to adhere to the artificial seaweed 6 is measured, and the string 10d is pulled up and collected.

FIG. 3 shows a collecting apparatus 1 for collecting living organisms.
Shows a state in which is pulled up toward the water. When the string-like body 10d is pulled up, the tubular member 10 pulls up the net-like bag 7 via the drawstring 10a, and captures an organism including living organisms attached to the artificial seaweed.

Next, the collecting apparatus 1 is raised above the water in the state of capturing living organisms shown in FIG. 3, and is transferred to a collecting bottle via the bottom tube 15. As described above, living organisms such as plankton attached to seaweed are captured and collected together with swimming plankton.

FIGS. 5 and 6 show an embodiment of a seagrass bed inhabiting organism collecting apparatus according to the second invention. The seaweed bed inhabiting organism collecting device (hereinafter abbreviated as a collecting device) 21 is attached to the wire 23 of a string-like body suspended from the water, a conical tubular net-like bag 27, and the net-like bag 27. And the artificial seaweed 26 to which living organisms are attached. The wire 23 is formed to have two engaging portions 3 a that suspend the net-like bag 27.

The reticulated bag body 27 is formed in a conical tubular reticulated shape with a wide opening at the top, using silk sieve as a filtering cloth material. The filtering cloth may be any fine material such as kanreisha, morrison, and silk. A nylon net may be used.

A first annular member 24 for maintaining a circular opening shape is provided at the top of the net-like bag 27, and a circular shape is maintained at the center to maintain a space around the artificial seaweed 26. A second annular member 28 is provided. At the lower part of the net-like bag 27, a net-like mat 38 having a mesh made of metal bars is mounted.

The properties of the leaf-like body 26a and the attachment of the artificial seaweed 26 to the reticulated mat 38 are the same as those in the embodiment shown in FIGS. Also, the lower end 27b of the mesh bag 27
A bottom tube 35, which is a tubular body having a lid 35a at the bottom, is easily attached and detached with a fastener, for example, a string or a clamp.

The operation of the collecting device 21 having the above configuration will be described. FIG. 6 shows a state in which the collecting device 21 is settled in a seaweed bed on the water bottom G. First, as shown in FIG. 5, the string-like body 23 of the collection device 21 is sent into water,
To sink. When the collection device 21 has landed on the seabed, it continues sinking while gradually maintaining the vertical state, and the artificial seaweed 26
So that the net portion of the net-like bag 27 shrinks. First
And the second annular members 24 and 28 act to prevent a lateral flow or the like of the shrinking net portion.

Next, the collection time for the inhabiting organisms such as plankton to adhere to the artificial seaweed 26 is measured, and the string 23 is lifted and collected. FIG. 5 shows a state in which living organisms are collected and the collection device 21 is pulled up toward the water. Pull up the string-like body 23 and pull up the net-like bag body 27,
An organism including a living organism attached to the artificial seaweed 26 is captured.

Next, the collecting device 21 is raised above the water in the state of capturing living organisms shown in FIG. 5, and is transferred to a collecting bottle via the bottom tube 35. As described above, living organisms such as plankton and the like that adhere to the artificial seaweed 26 are captured and collected together with the swimming plankton.

Compared with the first embodiment shown in FIGS. 1 to 3, planktons and creatures at an arbitrary depth cannot be collected, but marine biocollection on the seabed is simple, inexpensive, and easy to handle. .

FIGS. 7 and 8 show an embodiment of a seagrass bed inhabiting organism collecting apparatus 41 according to the third invention. The seagrass bed inhabiting organism collecting device (hereinafter abbreviated as a collecting device) 41
Is mainly composed of a string-shaped wire 43 suspended from the water, an artificial seaweed device 45 for attaching living organisms, and a net-like bag 47 for capturing and collecting living organisms close to the collection device 41. .

The wire 43 locks the artificial seaweed device 45 at the lower end and is fixed to the wire 43 to form a mesh bag 47.
And a pair of stop pieces, a stop piece 13 for limiting the ascending position and a stop piece 14 for limiting the lower limit position.

The artificial seaweed device 45 is formed by attaching an artificial seaweed 46 to a net-like mat 58 formed in a net shape with a wire. This net-like mat 58 is attached to the inner lower part of the net-like bag body 47, and the center thereof is locked by the lower end of the wire 43.

The properties of the foliate body 46a and the attachment of the artificial seaweed 46 to the reticulated mat 58 are the same as those of the first embodiment of the present invention shown in FIGS.

The mesh-like bag 47 is formed in a cylindrical mesh-like shape whose upper part is opened by a steel ring 44 of an annular member, using sieve silk as a filtering cloth material. When collecting living organisms such as plankton, the artificial seaweeds 46 are folded to open underwater, and when capturing living organisms and lifting them up on the water, the artificial seaweeds 46 are extended to surround them.
The filtering cloth may be any fine material such as kanreisha, morrison, and silk. A nylon net may be used.

A bottom tube 55, which is a cylindrical body having a lid 55a on the bottom, is provided on the bottom 47b of the mesh bag 47,
For example, it is easily attached and detached with a string or a clamp.
The steel ring 44 is provided with two cords, a pull cord 50a, which are slidable between a stop piece 53 above the wire 43 and a stop piece 54 below the wire 43. It is attached to a steel pipe 50 of a mounted tubular member.

When the steel pipe 50 is pulled up to the stop piece 53, the mesh bag 47 rises to the upper portion of the artificial seaweed 46, which is a predetermined upper sliding limit, and at the position lowered to the stop piece 54. The artificial seaweed 46 is configured to hang down to a predetermined mounting lower limit position, that is, the mounting height position of the artificial seaweed 46, that is, the height of the mesh mat 58.

The steel pipe 50 is provided with a string-like body 50d communicating with the water, and is operated so that the net-like bag body 47 is brought into a state where living organisms are brought close to the living body or captured and collected and raised to the water. When the reticulated bag 47 is at or above the upper limit position, a lifting force is not applied to the reticulated bag 47.

The operation of the collection device 41 having the above configuration will be described. FIG. 7 shows a state in which the collecting device 41 is settled in the underwater seaweed bed. First, the string-like body 43 is sent into water, and the collecting device 41 is settled. At this time, towline 50
a is loosened, the steel pipe 50 is in close contact with the stop piece 54, and the mesh bag 47 is in a contracted state. Then, it is landed on the seabed G at a predetermined depth position.

Next, the collection time for the inhabiting organisms such as plankton to adhere to the artificial seaweed 46 is measured, and the string 50d is formed.
To collect.

FIG. 8 shows a collecting device 4 for collecting living organisms.
1 shows a state in which 1 is raised toward the water. When the string-shaped body 50d is pulled up, the iron pipe 50 is pulled
The net-like bag 47 is pulled up through the ring a and the steel ring 44 to capture living organisms including living organisms attached to the artificial seaweed 46.

Next, the collecting device 41 is raised above the water in the state of capturing the living organisms shown in FIG. 8, and is transferred to the collecting bottle via the bottom tube 55. As described above, living organisms such as plankton attached to seaweed are captured and collected together with swimming plankton.

The effects of the present invention are listed below. (1) According to the seagrass bed inhabiting organism collecting apparatus of the present invention, unlike the conventional net, it is possible to collect plankton, fry, juvenile shrimp and the like living on the seaweed, and to create a seaweed bed.
Investigate the actual situation for expansion. (2) According to the first and third aspects, not only the seabed but also living organisms at an arbitrary depth can be collected. (3) According to the first invention, since the bone assembly structure is configured to play the role of the weight by the steel rod,
Even in a place where there is a water flow, the collection device is not washed away and collection is easy. (4) According to the first and third inventions, since the tubular member (steel pipe) lifts a heavy object such as a bone assembly structure or an artificial seaweed device by the upper stop piece of the wire, a load is applied to the mesh bag. No damage to the net. (5) According to the second aspect, the structure is simple and lightweight, so that it can be manufactured at low cost and is easy to handle.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a seaweed bed inhabiting organism collecting apparatus of the first invention.

FIG. 2 is a front view of the seaweed bed inhabiting organism collecting apparatus of FIG. 1 as seen from the direction of arrow Y in FIG.

FIG. 3 is a front view showing a state in which the seaweed bed inhabiting organism collecting apparatus of FIG. 1 is pulled up after completing the organism collection.

FIG. 4 is a diagram showing a bottom pipe provided at the bottom of the seagrass bed inhabiting organism collecting apparatus of FIG. 1 for collecting collected organisms and transferring the collected organisms to a collection bottle or the like, and attaching the same to a net.

FIG. 5 is a perspective view showing an embodiment of the seagrass bed inhabiting organism collecting apparatus according to the second invention, which is in a state where it is lifted after collecting organisms.

6 is a perspective view showing a state in which the seaweed bed inhabiting organism collecting apparatus of FIG. 5 has landed on the seabed and is collecting organisms.

FIG. 7 is a perspective view of the embodiment of the seaweed bed inhabiting organism collecting apparatus according to the third invention in a state of collecting organisms.

FIG. 8 is a perspective view showing a state where the seaweed bed inhabiting organism collecting apparatus of FIG. 7 is pulled up after the living organism collection.

FIG. 9 shows a conventional plankton collecting apparatus.

[Explanation of symbols]

 G: sea bottom 1, 21, 41 ... an apparatus for collecting living organisms living on seaweed beds 3 ... a string (wire) 5 ... a framed three-dimensional structure 6 ... an artificial seaweed 7 ... a net-like bag 7a Bottom surface 8 Reticulated mat 10 Tubular member 10a String (pulling cord) 13, 14 Stop piece 15 Tubular body (bottom tube) 15a Lid

Claims (3)

[Claims] 1. A seaweed bed inhabiting organism collecting apparatus for collecting organisms such as plankton, juvenile fish, juvenile shrimp and the like which sink in seawater and inhabit the seaweed bed, and a string suspended from the water and into the water. A bone assembly structure having an artificial seaweed suspended from the body, and a mesh-like bag body capable of freely surrounding or releasing the bone assembly structure, wherein the bone assembly structure is provided at a lower part of a mesh-like structure. The artificial seaweed was attached to a mat, the mesh bag was fastened to a tubular member slidably mounted on the outside of the cord, and the tubular member was fixed to the cord. Mounted between a pair of upper and lower stop pieces, the lower stop piece is fixed to the sliding lower limit position of the tubular member where the mesh bag hangs down to a predetermined low position, and the upper stop piece is the mesh bag. At the sliding upper limit position of the tubular member rising to a predetermined high position A seaweed bed inhabiting organism collecting apparatus, wherein a tubular body having a lid at the bottom is attached to a bottom surface of the net-like body and fixed. 2. A seaweed bed inhabiting organism collecting apparatus for collecting organisms such as plankton, juvenile fish, juvenile shrimp, etc., which sinks in seawater and inhabits seaweed beds, and a string suspended from the water and into the water. A conical tubular reticulated bag provided with artificial seaweed suspended from the resilient body via the first annular member, wherein the reticulated bag is provided with a second annular member at an intermediate portion thereof, and a reticulated bag. The artificial seaweed is attached to a mesh mat provided at a lower portion of the bag, the first annular member is formed to have a larger diameter than the second annular member, and a lower end of the mesh bag has a lid at a bottom portion. A seaweed bed inhabiting organism collecting apparatus, characterized by being provided with a tubular body. 3. A seaweed bed habitat collecting apparatus for collecting plankton, juvenile fish, juvenile shrimp and the like living in seaweed beds by submerging in seawater, and a string suspended from the water and into the water. An artificial seaweed device provided with an artificial seaweed suspended in a state body, and a cylindrical reticulated bag that surrounds or releases the artificial seaweed device. Attached, the mesh mat is attached to a lower portion of the mesh bag, and the mesh bag is locked by a string via a ring member to a tubular member slidably mounted outside the string. The tubular member is mounted between a pair of upper and lower stop pieces fixed to the string-like body, and the lower stop piece is located at a sliding lower limit position of the tubular member at which the mesh bag hangs down to a predetermined low position. It is fixed, and the upper stop piece is A seaweed bed fixed to a sliding upper limit position of the tubular member rising to a predetermined high position, and a tubular body having a lid at a bottom attached to a bottom surface of the mesh-like bag body; Habitat collection equipment.