Artificial Breeding Method of Wild Northeast Lamprey

Abstract

The invention provides an artificial breeding method for wild lampreys. First capture the sexually mature parent lamprey with good vitality; gently massage and squeeze the abdomen of the female parent lamprey, squeeze the egg cells into a clean fertilization container, then squeeze the semen of the male parent lamprey onto the egg cells, and inject the aseptic Shake the water gently, and let it stand at 15~21℃ for 10 minutes for artificial insemination; then gently wash the excess semen on the fertilized eggs with sterile water; culture the fertilized eggs in an incubator at 15~21℃, and the hatched heptapills The eel juveniles were separated into a 15-21°C constant temperature breeding box with a circulating water system covered with fine sand at the bottom, and after 20-25 days of culture, they were fed with 50-100 μg of yeast per eel once a day, and thus obtained Northeast Seven. Gill eel fry. The method of the invention solves the technical problem that wild northeast lampreys are difficult to artificially breed, and creates conditions for laboratory and large-scale cultivation of lampreys.

Description

technical field

[0001] The invention belongs to the technical field of breeding of jawless fishes. More specifically, it relates to captive breeding methods for wild Northeast lampreys. Background technique

[0002] Lamprey ( Lampetrajaponicum ), also known as hagfish, seven stars, and small brittle bones, is an ancient fish of the round mouth class and the order of lampreys. In China, it is mainly distributed in the waters of the Yalu River. It is a land-sealed type rather than a migratory type. It is called the Northeast Lamprey. Lamprey is one of the few jawless vertebrate fish-like animals that have survived so far. Known as a "living fossil", it is a model animal for the study of vertebrates and is of great significance for the study of biological evolution.

[0003] At the same time, lamprey is also a valuable aquatic product with high economic and social benefits, especially as a special product in Northeast China, which has attracted our attention. Europe has reg...

Examples

Embodiment 1

[0030] The artificial breeding of embodiment 1 wild northeast lamprey

[0031] 1. Select the breeding place of the Northeast Lamprey, which is the Shanding Lake in the waters of the Yalu River on the border between China and North Korea. During the breeding season of the Northeast Lamprey, put multiple grille fish cages into the depths of the water, lift the cages after 3 days, and obtain more than 100 fish cages. Vigorous sexually mature males and females.

[0032] 2. Use ice cubes, fish water, and air in a volume ratio of 1:2:2 to transport them to the artificial breeding site. The transportation time on the way shall not exceed 24 hours to prevent the lamprey from dying due to lack of oxygen or excessive temperature. The transported lampreys were reared in a constant temperature breeding box at 15°C with a photoperiod of 12h:12h. Because Northeastern lampreys do not eat when they are sexually mature, they only need to change fresh water twice a week.

[0033] 3. Artifi...

Embodiment 2

[0037] The artificial breeding of embodiment 2 wild northeast lamprey

[0038] 1. Select the breeding place of the Northeast Lamprey, which is the Shanding Lake in the waters of the Yalu River on the border between China and North Korea. During the breeding season of the Northeast Lamprey, put multiple grille fish cages into the depths of the water, lift the cages after 3 days, and obtain more than 100 fish cages. Vigorous sexually mature males and females.

[0039] 2. Use ice cubes, fish water, and air in a volume ratio of 1:2:2 to transport them to the artificial breeding site. The transportation time on the way shall not exceed 24 hours to prevent the lamprey from dying due to lack of oxygen or excessive temperature. The transported lampreys were reared in a constant temperature breeding box at 15°C with a photoperiod of 12h:12h. Because Northeastern lampreys do not eat when they are sexually mature, they only need to change fresh water twice a week.

[0040]3. Artific...

Embodiment 3

[0044] Embodiment 3 Artificial breeding of wild northeast lamprey

[0045] 1. Select the breeding place of the Northeast Lamprey, which is the Shanding Lake in the waters of the Yalu River on the border between China and North Korea. During the breeding season of the Northeast Lamprey, put multiple grille fish cages into the depths of the water, lift the cages after 3 days, and obtain more than 100 fish cages. Vigorous sexually mature males and females.

[0046] 2. Use ice cubes, fish water, and air in a volume ratio of 1:2:2 to transport them to the artificial breeding site. The transportation time on the way shall not exceed 24 hours to prevent the lamprey from dying due to lack of oxygen or excessive temperature. The transported lampreys were reared in a constant temperature breeding box at 15°C with a photoperiod of 12h:12h. Because Northeastern lampreys do not eat when they are sexually mature, they only need to change fresh water twice a week.

[0047] 3. Artificial...

technical field

[0001] The invention belongs to the technical field of breeding of jawless fishes. More specifically, it relates to captive breeding methods for wild Northeast lampreys. Background technique

[0002] Lamprey ( Lampetrajaponicum ), also known as hagfish, seven stars, and small brittle bones, is an ancient fish of the round mouth class and the order of lampreys. In China, it is mainly distributed in the waters of the Yalu River. It is a land-sealed type rather than a migratory type. It is called the Northeast Lamprey. Lamprey is one of the few jawless vertebrate fish-like animals that have survived so far. Known as a "living fossil", it is a model animal for the study of vertebrates and is of great significance for the study of biological evolution.

[0003] At the same time, lamprey is also a valuable aquatic product with high economic and social benefits, especially as a special product in Northeast China, which has attracted our attention. Europe has reg...

Examples

Embodiment 1

[0030] The artificial breeding of embodiment 1 wild northeast lamprey

[0031] 1. Select the breeding place of the Northeast Lamprey, which is the Shanding Lake in the waters of the Yalu River on the border between China and North Korea. During the breeding season of the Northeast Lamprey, put multiple grille fish cages into the depths of the water, lift the cages after 3 days, and obtain more than 100 fish cages. Vigorous sexually mature males and females.

[0032] 2. Use ice cubes, fish water, and air in a volume ratio of 1:2:2 to transport them to the artificial breeding site. The transportation time on the way shall not exceed 24 hours to prevent the lamprey from dying due to lack of oxygen or excessive temperature. The transported lampreys were reared in a constant temperature breeding box at 15°C with a photoperiod of 12h:12h. Because Northeastern lampreys do not eat when they are sexually mature, they only need to change fresh water twice a week.

[0033] 3. Artifi...

Embodiment 2

[0037] The artificial breeding of embodiment 2 wild northeast lamprey

[0038] 1. Select the breeding place of the Northeast Lamprey, which is the Shanding Lake in the waters of the Yalu River on the border between China and North Korea. During the breeding season of the Northeast Lamprey, put multiple grille fish cages into the depths of the water, lift the cages after 3 days, and obtain more than 100 fish cages. Vigorous sexually mature males and females.

[0039] 2. Use ice cubes, fish water, and air in a volume ratio of 1:2:2 to transport them to the artificial breeding site. The transportation time on the way shall not exceed 24 hours to prevent the lamprey from dying due to lack of oxygen or excessive temperature. The transported lampreys were reared in a constant temperature breeding box at 15°C with a photoperiod of 12h:12h. Because Northeastern lampreys do not eat when they are sexually mature, they only need to change fresh water twice a week.

[0040]3. Artific...

Embodiment 3

[0044] Embodiment 3 Artificial breeding of wild northeast lamprey

[0045] 1. Select the breeding place of the Northeast Lamprey, which is the Shanding Lake in the waters of the Yalu River on the border between China and North Korea. During the breeding season of the Northeast Lamprey, put multiple grille fish cages into the depths of the water, lift the cages after 3 days, and obtain more than 100 fish cages. Vigorous sexually mature males and females.

[0046] 2. Use ice cubes, fish water, and air in a volume ratio of 1:2:2 to transport them to the artificial breeding site. The transportation time on the way shall not exceed 24 hours to prevent the lamprey from dying due to lack of oxygen or excessive temperature. The transported lampreys were reared in a constant temperature breeding box at 15°C with a photoperiod of 12h:12h. Because Northeastern lampreys do not eat when they are sexually mature, they only need to change fresh water twice a week.

[0047] 3. Artificial...

Images