Reef bag

Abstract

To solve the problem that most of short-necked clams, corbicula, clams, etc., living around a tideland are killed by the tideland heated to 25-30 °C or higher by direct sunlight affected by global warming or seawater heated to 25-30 °C or higher by direct sunlight left in the tideland in a conventional general method for culturing and spawning the short-necked clams, corbicula, clams, etc.SOLUTION: The present invention solves the problem that most of short-necked clams, corbicula, clams, and the like living around a tideland and a shoal are killed by seawater heated to 25 °C. or more by direct sunlight in the tideland and the tideland, which are affected by global warming and are heated to 25 °C. or more by direct sunlight of sunlight, by providing a light shielding sheet for shielding direct sunlight from sunlight on an inner side or an outer side of an upper surface serving as a sea surface side.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention is a bag for aquaculture and spawning reefs used mainly for the cultivation and spawning of clams, mussels, cockles, and hard clams, and its purpose is to prevent the temperature inside the bag for aquaculture and spawning reefs that form spawning reefs and that are exposed to direct sunlight. [Background technology]

[0002] Clams, Japanese mussels, and cockles are in high demand as luxury foodstuffs in Japan's fisheries industry. However, in recent years, due to the effects of global warming, the tidal flats where these creatures live are exposed to direct sunlight, and the temperature of the seawater remaining on the tidal flats at low tide has risen above 25°C, causing these creatures to die out due to this abnormal rise in temperature.

[0003] Such abnormal weather phenomena are likely to become more frequent as global warming progresses, and there are concerns that the situation described above will lead to the deaths of clams, mussels, and cockles, as well as the depletion of resources and adverse effects on the ecosystems of marine clams, mussels, and cockles.

[0004] Therefore, in recent years, measures such as the SDGs and reducing greenhouse gas emissions have been implemented on a global scale.

[0005] The general method for cultivating clams, mussels, and other shellfish is to obtain young clams, mussels, and other shellfish from nearby clam, mussel, and shellfish culturing facilities, and then have the fishing cooperative or other related parties release these young clams, mussels, and shellfish into the ocean where they live. In addition, techniques such as a hanging culture method in which clams are placed in net bags and suspended in the sea, as well as container-type culture methods, have been developed, but maintenance and management against waves caused by typhoons and the like are difficult, and no technology has been developed to prevent the temperature from rising due to direct sunlight.

[0006] On the other hand, tidal flats and shallows are home to an abundance of organic matter such as plankton, which is food for the clams, mussels, and cockroaches that live in tidal flats and shallows, and fish and sea urchin droppings, as well as diatoms and seaweed that are useful as habitats and food for the clams, mussels, and cockroaches that live in tidal flats and shallows, and are known to be beneficial for the growth of the clams, mussels, and cockroaches that live in tidal flats and shallows.

[0007] In recent years, efforts have been made to create artificial tidal flats on the seabed and cultivate clams, mussels, and cockles that live on the tidal flats and in shallow waters.

[0008] Known artificial farms include those that create a perimeter wall using sturdy bags and fill the inside with sand or other materials that are favorable for the habitat of clams, mussels, and cockles, those that add new sand to natural tidal flats, and those that plow existing tidal flats with agricultural machinery to make them favorable habitats for clams, mussels, and cockles.Newer technologies include suspended farming, container farming, and net cage farming. [Patent documents] [Prior art documents]

[0009] [Patent Document 1] Patent 7349613 JP [Patent Document 2] Patent 7360482 JP [Patent Document 3] Patent 5004441 JP [Patent Document 4] Patent 4616087 JP [Patent Document 5] Patent 2002-101785 JP [Patent Document 6] Patent Publication No. 2007-129913 JP [Patent Document 7] Patent Publication No. 2020-178616 JP [Non-patent literature] [Patent Document 3] Patent Publication No. 2005-006625 JP Summary of the Invention [Problem to be solved by the invention]

[0010] However, with the above-mentioned conventional methods of cultivating and spawning clams, mussels, and other fish, problems have arisen in which the majority of clams, mussels, and other fish living in the surrounding areas are dying off due to the effects of global warming, which has caused tidal flats to become hotter than 25 to 30 degrees Celsius due to direct sunlight, and the seawater that remains on the tidal flats to become hotter than 25 to 30 degrees Celsius due to direct sunlight.

[0011] Furthermore, the new technology, the suspended aquaculture technology, had the problem that it had to be introduced in a place that did not become a tidal flat even at low tide.

[0012] Therefore, in consideration of the problems of direct sunlight heating up tidal flats where clams, mussels, and cockles live, which are thought to be caused by global warming, and the boiling of residual seawater due to the effects of direct sunlight at low tide, this invention was made with the aim of providing an inexpensive product to protect clams, mussels, and cockles that live on tidal flats and in shallow waters from the direct heating of their habitats caused by direct sunlight. [Means for solving the problem]

[0013] The invention described in claim 1, which solves the problem of the death of clams, mussels, and other mussels due to the direct heating of tidal flats caused by direct sunlight and the heating of residual seawater at low tide, is characterized by the fact that it is a culture / spawning reef bag for cultivating clams, mussels, and other mussels that live on tidal flats and shallow waters, and forms spawning reefs, and has a light-blocking sheet on the inside or outside of the top surface facing the sea to block direct sunlight, thereby preventing the small gravel packed into the culture / spawning reef bag, as well as the clams, mussels, and other mussels, from heating up due to direct sunlight.

[0014] The invention of claim 2 is characterized in that, in addition to the features of claim 1, the light-blocking sheet for blocking direct sunlight has multiple holes of about 16 to 25 square millimeters that serve as entrances and exits for water inlet and outlet pipes for the asari clams, mussels, and cockles to breathe and feed on nutrient plankton. These holes also serve to prevent the floating of the culture and spawning reef bags due to air pockets by expelling air remaining inside the culture and spawning reef bags when the tide changes from low tide to high tide.

[0015] The size of the light-blocking sheet for blocking light from the aquaculture / spawning reef bags described above is the same as the planar size of the aquaculture / spawning reef bags, and the sheet is fixed to the aquaculture / spawning reef bags by sewing with a sewing machine, using adhesives, staples, etc. [Effects of the Invention]

[0016] By being equipped with the structure described in claim 1, the aquaculture and spawning reef bag according to the present invention can block direct sunlight and prevent the temperature inside the aquaculture and spawning reef bag from rising to high temperatures, thereby preventing the death of clams, mussels, cockles, etc. due to high temperatures.

[0017] Furthermore, by providing the configuration of claim 2 in this invention, it is possible to create an entrance and exit for the water pipes so that clams, mussels, and cockles can breathe and feed on nutrient plankton. Furthermore, it also plays a role in aquaculture when the tide changes from low tide to high tide, by releasing the air remaining inside the spawning reef bags through the holes, and in aquaculture by the remaining air, preventing the spawning reef bags from floating up.

[0018] Furthermore, the method of installing the aquaculture and spawning reef bags according to the present invention can be to install them flat on the seabed or tidal flats, or by cultivating the tidal flats in ridges higher than the residual seawater and installing the aquaculture and spawning reef bags on top of the ridges, thereby protecting them from the residual seawater that has become hot due to direct sunlight at low tide. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a front view showing a bag for aquaculture and spawning reefs according to the present invention. FIG. [Figure 2] FIG. 2 is a side view showing the aquaculture and spawning reef bag in FIG. 1. [Figure 3] FIG. 2 is a plan view showing the aquaculture and spawning reef bag in FIG. 1. [Figure 4] FIG. 2 shows the specifications of the aquaculture and spawning reef bag in FIG. 1. [Figure 5] FIG. 2 is a diagram showing the specifications of the aquaculture and spawning reef bag in FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0020] Next, an embodiment of the bag for aquaculture and spawning reefs according to the present invention will be described based on the examples shown in Figures 1 to 5. In the figures, reference numeral 1 denotes the bag, reference numeral 2 denotes a light-shielding sheet for blocking direct sunlight, and reference numeral 3 denotes the cultivated clams.

[0021] This aquaculture and spawning reef bag 1 is installed on the seabed of tidal flats or shallow waters suitable for the growth of clams, mussels, and mussels, forming an artificial aquaculture and spawning reef.

[0022] This bag is for cultivating clams, mussels, and cockles that live in tidal flats and shallow waters, and for cultivating and forming spawning reefs. By having a light-shielding sheet for blocking direct sunlight on the inside or outside of the upper surface facing the sea, it can be used to prevent the death of clams, mussels, and cockles due to the temperature rise in their habitat caused by direct sunlight. [Explanation of symbols]

[0023] 1 bag 2 Light blocking sheet 3. Clams

Claims

1. This is a bag for cultivating clams, mussels, and other clams that live in tidal flats and shallow waters, and for forming spawning reefs, characterized in that the bag has a light-shielding sheet on the inside or outside of the top surface facing the sea to block direct sunlight from sunlight in order to prevent the internal temperature of the bag from rising due to direct sunlight.

2. The bag for aquaculture and spawning reefs described in claim 1 is a light-blocking sheet for blocking direct sunlight from sunlight, which is a light-reflecting sheet or a light-blocking sheet, and the light-blocking sheet has multiple holes of approximately 16 to 25 square millimeters perforated all over the surface of the light-blocking sheet at intervals of 30 mm to 40 mm.

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