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Artificial seedling-rearing method of octopus

An artificial technology of octopus, which is applied in fish farming, application, climate change adaptation, etc., can solve the problem of the large-scale artificial breeding technology of octopus, low hatching rate and seedling survival rate of octopus, and the restriction of artificial scale of octopus Breeding and other problems, to achieve the effect of reducing premature membrane rupture rate, high hatching rate and emergence rate, and improving hatching rate

Inactive Publication Date: 2009-06-17
NINGBO UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

So far, the hatching rate and seedling survival rate of long octopus are all low, coupled with its small amount of brood eggs, the large-scale artificial seedling technology of long octopus has not been realized, which has become a bottleneck restricting the artificial large-scale breeding of long octopus

Method used

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Experimental program
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Embodiment

[0018] 1. Parental care

[0019] In mid-May, select female long octopuses with good quality, strong vitality, and better gonad development and put them in the holding pond for temporary raising; during the holding period, change 60% of the water every day and inflate continuously; feed them on the tidal flat every day For fiddler crabs, thick crabs, small miscellaneous crabs, etc., when the bait is insufficient, they are fed with razor clams, and they absorb sewage every day. When the gonads of the female long octopus are mature, they stop eating.

[0020] 2. Incubation pool settings

[0021] Inject seawater with a specific gravity of 1.017±0.001 in the hatching tank, the water depth is 50cm, set several hatching cages with a height of 70cm in the hatching tank, the upper end of the hatching cage is surrounded by lead wires to form a circle with a diameter of 30cm, and the lead wire circle is hung up with ropes , the lower end uses a plastic plate with a diameter of 30 cm as ...

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Abstract

The present invention discloses an octopus variabilis artificial breeding method comprising steps of holding culture, oviposit and hatching in a hatching pond and young octopus variabilis pond breeding. The hatching pond is provided with a hatching net box, a cement pot is positioned in the hatching net box, female octopus variabilis oviposit in the cement pot quietly, protects and hatches the ovums to wait for the young octopus variabilis to go out from the membrane, young octopus variabilis shielding pipes are positioned in the young octopus variabilis breeding pond, at least one of the mysid, big artemia, hydrophoria nuda cockroach is used as the opening baits for young octopus variabilis, the young octopus variabilis grow up in the shielding pipes, and the obtained young octopus variabilis have higher quality and stronger energy; by using the method, the number of generated ovums is over 140, the average hatchability is more than 90%, the average rate of emergence is over 80%; therefore, the present invention provides a octopus variabilis with a high hatchability and a high rate of emergence artificial breeding method, realizes the scale artificial breeding method of octopus variabilis and starts a foreground of the scale artificial breeding of octopus variabilis.

Description

technical field [0001] The invention relates to a seedling raising method for octopus, in particular to an artificial seedling raising method for long octopus. Background technique [0002] Long octopus (Octopus variabilis Sasaki), commonly known as octopus and Wangchao, belongs to Cephalopoda, Octopus, Octopidae, Octopus genus (Octopus genus), and is the main economic species of octopus in the northern coastal area of ​​Zhejiang. Its meat is delicious and nutritious, and its edible portion is extremely high. Long octopus has a relatively high price in the domestic market and is very popular, and live long octopus is especially popular. Due to overfishing, the long octopus resources are gradually declining, and the catch is decreasing day by day. Although the bottle culture of long octopus has been successful in Fujian and other places, the source of juvenile octopus is all trapped in natural sea areas. The supply of seedlings is restricted by natural factors, and it is di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 王春琳李来国张晓梅徐永健蒋霞敏
Owner NINGBO UNIV
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