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A kind of artificial cultivation method of large-sized seedlings of Japanese sea god clam in autumn

An artificial cultivation, large-scale technology, applied in application, climate change adaptation, fish farming, etc., can solve problems such as unreported, and achieve the effect of improving survival rate, large size of seedlings, and strong practicability

Active Publication Date: 2022-07-15
DALIAN OCEAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there are no reports at home and abroad about the research on the indoor artificial seed breeding technology of Poseidon clam

Method used

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  • A kind of artificial cultivation method of large-sized seedlings of Japanese sea god clam in autumn
  • A kind of artificial cultivation method of large-sized seedlings of Japanese sea god clam in autumn
  • A kind of artificial cultivation method of large-sized seedlings of Japanese sea god clam in autumn

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Experimental program
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Effect test

Embodiment 1

[0038] 1. Temporary rearing, induction of labor and hatching

[0039] In the first ten days of October 2019, the Japanese sea clams with a shell length of 10cm or more with regular shell shape, no damage and strong water pipe contraction were selected as the parent shells, and the parent shells were transported from Rajin City, North Korea to Dalian Shicheng Island Nursery, at 30m 3 Temporarily maintained in a cement pond. During the breeding period, the indoor natural water temperature is 18-20℃, the salinity is 28-33, and the density is 1 / m2 3 , continue to inflate to keep the dissolved oxygen in the water above 4mg / L. The bait is the concentrated diatom Nitzschia closterium, which is fed 3 to 4 times a day, and the daily feeding amount is 8 × 10 3 cells / mL~1×10 4 cells / mL, feeding times and feeding amount are determined by observing the feeding situation of larvae every day. Change the water in full once a day.

[0040] Using a microscope, it was observed that the gona...

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Abstract

The invention provides a method for artificially cultivating large-sized seedlings of Poseidon japonica in autumn, and relates to the technical field of aquaculture. The large-sized seedlings of Poseidon japonica are cultivated by utilizing the characteristics of water temperature in autumn and spring in the northern sea area combined with indoor seedling workshops and outdoor earthen ponds to cultivate large-sized seedlings of Poseidon japonica every year. In October, the parent clams were collected, and the larvae were cultivated by feeding artificial concentrated bait, seedlings collected from the bottom of the cement pond, and brooding in the middle of the submerged net frame of the pond. Effectively improve the survival rate of bottom seeding culture and reduce the cost of artificial cultivation. The cultivation time of artificial seedlings in autumn is 5 months longer than that in spring, the length and specifications of seedlings are increased by more than 70.0% compared with those of artificially cultivated seedlings in spring, and the survival rate of indoor seedlings is increased by more than 50.0% compared with that in spring.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to an indoor artificial breeding method for Japanese sea god clam fry. Background technique [0002] Panopea japonica (Panopea japonica) is a kind of geoduck. Its adult shell is generally 8-15cm long and its fresh weight is 200-600g. It is distributed in the northern Yellow Sea of ​​my country, the Korean Peninsula and the waters of Hokkaido, Japan. It prefers to live in the intertidal zone to 50 meters of sediment bottom, buried depth of 30 ~ 40cm. At present, the resources of my country's indigenous Japanese sea clams are almost depleted, and they are mainly imported from North Korea. The water pipes are slightly golden and the meat quality is comparable to the high-end BC geoduck (P. abtupta) produced in Vancouver, Canada. It has large individuals and fast growth. , high meat yield, delicious meat, rich nutrition and other advantages, are favored by the majority of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 霍忠明赵雯方蕾车宗豪刘括张兴志杨凤闫喜武
Owner DALIAN OCEAN UNIV
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