Seedling breeding method of pharaoh cuttlefish

Abstract

The invention relates to the field of cuttlefish seedling raising breeding, in particular to a seedling breeding method of pharaoh cuttlefish. The method comprises the steps of 1) construction of a spawning breeding pond; 2) optimization of the spawning breeding pond; 3) putting of pharaoh cuttlefish parents; 4) strengthening culture; 5) egg collection; 6) hatching; 7) seedling raising. During strengthening culture, argyrosomus argentatus or minnows containing additives capable of improving the reproductive performance of the parent pharaoh cuttlefish are adopted as baits; during hatching, thewater is controlled to be increased and decreased to simulate the water pressure change of tide rising and falling of the sea; during seedling raising, seedlings are fed to a growing stage with a series of baits including artemia nauplii, copepods, live possum shrimp larvae and dead possum shrimps in sequence. The method helps to accelerate the gonad maturation, improves the gonad development process, shortens the spawning cycle, significantly increases the hatching rate of fertilized eggs, significantly improves the robustness of the cuttlefish larvae, reduces the number of dead eggs and dead seedlings, improves the seedling raising efficiency, and increases economic benefits.

Description

technical field

[0001] The invention relates to the field of squid seedling cultivation and cultivation, in particular to a method for growing tiger squid seedlings. Background technique

[0002] Tabby squid, Cephalopoda, Sepiaceae. Carcass shield-shaped. Carcass length is twice the carcass width. The carcass has many tabby spots. The meat fins are wider, the maximum width is slightly less than 1 / 4 of the carcass width, located on the entire edge of both sides of the carcass, and separated at the rear end. The length of the sessile wrist is generally 4321mm, with 4 rows of suckers, and the horny ring has no teeth. Stemization of the fourth wrist on the left side of the male. The tentacles are sickle-shaped, with 5-6 rows of suckers, ranging in size, of which 3-4 are very large, and their horny rings do not have teeth. Inner shell oval. The maximum carcass length recorded is 0.43m, and the maximum weight is 5kg. Distributed in the coastal waters of the Northwest Pacif...

Examples

Embodiment 1

[0040] A kind of seedling raising method of tiger squid, described seedling raising method specifically comprises the following steps:

[0041] 1) Construction of spawning breeding pond: build a semi-buried cement spawning breeding pond with a specification of 10m×5m×1.5m, the bottom and surface of the pond are smooth, equipped with oxygenation, temperature control, sewage discharge, water treatment devices, the bottom of the pond is facing The drainage hole is inclined at a slope of 5%, disinfected with potassium permanganate, and the light intensity of the culture pond is controlled to 220Lux;

[0042] 2) Optimize the spawning pond: the bottom of the spawning pond is 1 fish / m 2 Set up an egg-attached net, which has a mesh size of 25 mm, and is fixed at 10 mm above the bottom of the pond, filled with cultured seawater to a depth of 1.2 m and inflated with oxygen at the bottom of the culture pond to keep DO at 7.2 mg / mL ;

[0043] 3) Putting the broodstock of tiger squid: se...

experiment example

[0073] Experimental example: detection of egg production, hatching rate and seedling survival rate in Example 1 and Comparative Examples 2-6:

[0074] The number of eggs laid, the hatching rate and the survival rate of seedlings of each female tabby squid under the different seedling raising methods in Example 1 and Comparative Examples 2-6 are listed in Table 1. As can be seen from Table 1, the individual egg production, hatching rate and seedling survival rate in the preferred embodiment 1 of the application are all higher, so this method can significantly improve the hatching rate of fertilized eggs and hatched cuttlefish larvae The degree of robustness, reduce the number of dead eggs and dead seedlings, improve the efficiency of seedling raising, and increase economic benefits.

[0075] Table 1. Statistics on the number of eggs laid, hatching rate and seedling survival rate in the whole spawning cycle

[0076]

[0077]

[0078] The conventional technologies in the abo...

technical field

[0001] The invention relates to the field of squid seedling cultivation and cultivation, in particular to a method for growing tiger squid seedlings. Background technique

[0002] Tabby squid, Cephalopoda, Sepiaceae. Carcass shield-shaped. Carcass length is twice the carcass width. The carcass has many tabby spots. The meat fins are wider, the maximum width is slightly less than 1 / 4 of the carcass width, located on the entire edge of both sides of the carcass, and separated at the rear end. The length of the sessile wrist is generally 4321mm, with 4 rows of suckers, and the horny ring has no teeth. Stemization of the fourth wrist on the left side of the male. The tentacles are sickle-shaped, with 5-6 rows of suckers, ranging in size, of which 3-4 are very large, and their horny rings do not have teeth. Inner shell oval. The maximum carcass length recorded is 0.43m, and the maximum weight is 5kg. Distributed in the coastal waters of the Northwest Pacif...

Examples

Embodiment 1

[0040] A kind of seedling raising method of tiger squid, described seedling raising method specifically comprises the following steps:

[0041] 1) Construction of spawning breeding pond: build a semi-buried cement spawning breeding pond with a specification of 10m×5m×1.5m, the bottom and surface of the pond are smooth, equipped with oxygenation, temperature control, sewage discharge, water treatment devices, the bottom of the pond is facing The drainage hole is inclined at a slope of 5%, disinfected with potassium permanganate, and the light intensity of the culture pond is controlled to 220Lux;

[0042] 2) Optimize the spawning pond: the bottom of the spawning pond is 1 fish / m 2 Set up an egg-attached net, which has a mesh size of 25 mm, and is fixed at 10 mm above the bottom of the pond, filled with cultured seawater to a depth of 1.2 m and inflated with oxygen at the bottom of the culture pond to keep DO at 7.2 mg / mL ;

[0043] 3) Putting the broodstock of tiger squid: se...

experiment example

[0073] Experimental example: detection of egg production, hatching rate and seedling survival rate in Example 1 and Comparative Examples 2-6:

[0074] The number of eggs laid, the hatching rate and the survival rate of seedlings of each female tabby squid under the different seedling raising methods in Example 1 and Comparative Examples 2-6 are listed in Table 1. As can be seen from Table 1, the individual egg production, hatching rate and seedling survival rate in the preferred embodiment 1 of the application are all higher, so this method can significantly improve the hatching rate of fertilized eggs and hatched cuttlefish larvae The degree of robustness, reduce the number of dead eggs and dead seedlings, improve the efficiency of seedling raising, and increase economic benefits.

[0075] Table 1. Statistics on the number of eggs laid, hatching rate and seedling survival rate in the whole spawning cycle

[0076]

[0077]

[0078] The conventional technologies in the abo...

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