Conservation reef group for maintaining larvae and juveniles of small yellow croakers by using floating shallow bridge and artificial algae field

Abstract

The utility model provides a conservation reef cluster utilizing floating shallow bridges and artificial algae farms to conserve larvae of little yellow croakers, which comprises a plurality of conservation reef clusters, each conservation reef cluster comprises three conservation reefs which are adjacently arranged in the horizontal direction, the conservation reefs comprise a first conservation reef and two second conservation reefs, the first conservation reef is one, and the second conservation reefs are two. The first conservation reef is arranged between the two second conservation reefs, and the size of the first conservation reef is larger than that of the second conservation reefs; steel bars are arranged in the conservation reefs, the steel bars surround a frame structure which is adjacent in an end-to-end mode, a gap is formed between the head end and the tail end of each conservation reef, an opening of each gap faces the upper left portion, the steel bars are filled with concrete, a floating trestle is arranged in the first conservation reef, and a seaweed field is laid in one of the two second conservation reefs.

Description

Technical Field

[0001] The utility model relates to the technical field of nursery reefs, in particular to a nursery reef group for maintaining fry and juvenile yellow croaker fish by utilizing a floating shallow bridge and an artificial algae field. Background Art

[0002] Small yellow croaker is a fish of the genus Sciaenidae of the order Perciformes, also known as cucumber, small fresh, and yellow croaker. It has an elongated, laterally flattened body; a large head with a developed mucus cavity and sagittal otoliths; a large and tilted mouth, located anteriorly; the upper and lower jaws are slightly equal, the lower jaw has no whiskers, and there are 6 inconspicuous small holes in the chin; the upper and lower jaws have fine teeth, the teeth on the outer side of the upper jaw and the inner side of the lower jaw are larger, but there are no canine teeth; the palatine bones and vomer bones are toothless; the dorsal fin is continuous; there is a notch between the fin spine and the fin ray, and the second spine of the anal fin is smaller than the eye diameter; the tail fin is pointed and long; the head and the front of the body have round scales, and the back has ctenoid scales; the fin rays of the odd fin also have fine scales; the lateral line extends to the end of the tail fin. The dorsal side is yellowish brown, the ventral side is golden yellow, the fins are grayish yellow, and the lips are orange-red. It inhabits the middle and bottom waters of the coastal and offshore sandy mud bottom at a depth of 20-100 meters. It is a omnivorous fish, mainly feeding on zooplankton, fish and shrimp, among which copepods are the main zooplankton. The spawning period is from March to June, slightly delayed from south to north. The small yellow croaker has high edible value, tender meat, rich nutrition, rich in protein, sugar, fat, calcium, phosphorus, iron, potassium, sodium, magnesium, selenium and vitamin A and other nutrients needed by the human body, and is often eaten fresh or made into salted and dried products. In addition, it also has a very high medicinal value. For example, the fish maw has the effects of moistening the lungs, strengthening the spleen, and replenishing qi and blood; the gallbladder can clear away heat and detoxify, calm the liver, and lower blood lipids; the fish scale can be used to make pharmaceutical glue; the testis is used to extract protamine and arginine; and the ovary can be used to extract lecithin. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a conservation reef group for maintaining small yellow croaker fry and juveniles by using a floating shallow bridge and an artificial algae field, so as to solve at least one of the above-mentioned technical problems.

[0004] The technical solution of the utility model is: a nursery reef group for maintaining yellow croaker fry and fry by using a floating shallow bridge and an artificial algae field, including a plurality of nursery reef groups, characterized in that the nursery reef group includes three nursery reefs arranged adjacent to each other in a horizontal direction, the nursery reefs include a first nursery reef and a second nursery reef, the first nursery reef is provided with one, the second nursery reef is provided with two, the first nursery reef is arranged between the two second nursery reefs, and the volume of the first nursery reef is greater than the volume of the second nursery reef;

[0005] The interior of the nursery reef is provided with steel bars, which surround a frame structure adjacent to each other end to end, and a gap is provided between the head and tail ends of the nursery reef, the gap opening faces the upper left, the outside of the steel bars is filled with concrete, a floating pier is provided in the first nursery reef, and a seaweed field is laid in one of the two second nursery reefs.

[0006] The utility model can maintain small yellow croaker fry and juveniles through the algae field, lure small yellow croaker parent fish to lay eggs near the algae field, and the fish eggs are hatched after a period of time. The space in the first nursery reef can be divided into two parts through the floating trestle in the first nursery reef, so that the fry and juveniles can be better maintained.

[0007] Further preferably, the steel bar includes a U-shaped lower end, the left side of the lower end is connected to the first extension end, the right side of the lower end is connected to the second extension end, the first extension end is inclined to the right, the second extension end is inclined to the left, and the gap is formed between the head of the first extension end and the head of the second extension end.

[0008] The gaps can facilitate the entry and exit of small yellow croakers, and can also restrict the entry of large fish.

[0009] Further preferably, a first limiting protrusion is provided on the inner side of the second extension end located in the first conservation reef, and a second limiting protrusion is provided on the inner side of the second extension end located in the second conservation reef, and the volume of the first limiting protrusion is greater than the volume of the second limiting protrusion.

[0010] The limiting protrusions can confine excess nutrients in the seawater within the conservation reef, providing a living environment for small yellow croaker fry.

[0011] Further preferably, the length of the second extension end is greater than the length of the first extension end.

[0012] Thereby the width of the gap can be ensured to ensure the shuttle of fry and juvenile fish.

[0013] Further preferably, the floating pier is arranged at the center of the lower end portion, and the height of the floating pier is flush with the height of the lower end portion.

[0014] The position and height of the floating pier are optimized to ensure even distribution of space within the first conservation reef. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model for protecting reefs.

[0016] In the figure: 1. First conservation reef; 2. Second conservation reef; 3. Gap; 4. Floating pier; 5. Seaweed field; 6. First limiting protrusion; 7. Second limiting protrusion. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Reference Figure 1As shown, a conservation reef group for maintaining yellow croaker larvae and juveniles by using a floating shallow bridge and an artificial algae field includes a plurality of conservation reef groups, the conservation reef group includes three conservation reefs arranged adjacently in the horizontal direction, the conservation reefs include a first conservation reef 1 and a second conservation reef 2, the first conservation reef has one, the second conservation reef has two, the first conservation reef is arranged between the two second conservation reefs, and the volume of the first conservation reef is greater than that of the second conservation reef; the conservation reef is provided with steel bars inside, the steel bars surround the frame structure adjacent to each other end to end, and a gap 3 is provided between the ends of the conservation reef, the gap opening faces the upper left, the outside of the steel bars is filled with concrete, a floating trestle 4 is provided inside the first conservation reef, and a seaweed field 5 is laid in one of the two second conservation reefs. The utility model can maintain yellow croaker larvae and juveniles through the algae field, lure yellow croaker parents to lay eggs near the algae field, and the fish eggs are hatched after a period of time, and the space inside the first conservation reef can be divided into two parts by the floating trestle in the first conservation reef, so as to better maintain the larvae and juveniles.

[0019] More preferably, the steel bar includes a lower end in a U-shaped shape, the left side of the lower end is connected to the first extension end, the right side of the lower end is connected to the second extension end, the first extension end is inclined to the right, the second extension end is inclined to the left, and a gap is formed between the head of the first extension end and the head of the second extension end. The gap can facilitate the entry and exit of small yellow croakers and can also restrict the entry of large fish.

[0020] Further preferably, a first limiting protrusion 6 is provided on the inner side of the second extension end located in the first conservation reef, and a second limiting protrusion 7 is provided on the inner side of the second extension end located in the second conservation reef, and the volume of the first limiting protrusion is greater than the volume of the second limiting protrusion. The limiting protrusion can limit excess nutrients in the seawater within the conservation reef, providing a living environment for small yellow croaker fry.

[0021] Preferably, the length of the second extension end is greater than the length of the first extension end, so as to ensure the width of the gap and the shuttle of the fry.

[0022] Further preferably, the floating pier is arranged at the center of the lower end, and the height of the floating pier is flush with the height of the lower end, so that the position and height of the floating pier are optimized to ensure uniform distribution of the internal space of the first conservation reef.

[0023] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A reef conservation system for maintaining yellow croaker larvae and juveniles using a floating shallow bridge and an artificial algae field, comprising a plurality of reef conservation systems, characterized in that: The nursery reef group includes three nursery reefs arranged adjacent to each other in a horizontal direction, the nursery reefs include a first nursery reef and a second nursery reef, there is one first nursery reef, there are two second nursery reefs, the first nursery reef is arranged between the two second nursery reefs, and the volume of the first nursery reef is greater than that of the second nursery reef; The interior of the nursery reef is provided with steel bars, which surround a frame structure adjacent to each other end to end, and a gap is provided between the head and tail ends of the nursery reef, the gap opening faces the upper left, the outside of the steel bars is filled with concrete, a floating pier is provided in the first nursery reef, and a seaweed field is laid in one of the two second nursery reefs.

2. The reef conservation method for maintaining yellow croaker larvae and juveniles by using a floating shallow bridge and an artificial algae field according to claim 1 is characterized in that: The steel bar includes a U-shaped lower end, the left side of the lower end is connected to the first extension end, the right side of the lower end is connected to the second extension end, the first extension end is inclined to the right, the second extension end is inclined to the left, and the gap is formed between the heads of the first extension end and the second extension end.

3. The reef conservation method for maintaining yellow croaker larvae and juveniles by using a floating shallow bridge and an artificial algae field according to claim 2, characterized in that: A first limiting protrusion is provided on the inner side of the second extension end located in the first conservation reef, and a second limiting protrusion is provided on the inner side of the second extension end located in the second conservation reef, and the volume of the first limiting protrusion is greater than the volume of the second limiting protrusion.

4. The reef conservation method for maintaining yellow croaker larvae and juveniles by using a floating shallow bridge and an artificial algae field according to claim 2, characterized in that: The length of the second extension end is greater than the length of the first extension end.

5. The reef conservation method for maintaining yellow croaker larvae and juveniles by using a floating shallow bridge and an artificial algae field according to claim 2, characterized in that: The floating trestle is arranged at the center of the lower end portion, and the height of the floating trestle is flush with the height of the lower end portion.

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