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Artificial cultivation method for large-size seedlings of Panopea japonica 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: 2020-09-18
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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  • Artificial cultivation method for large-size seedlings of Panopea japonica in autumn
  • Artificial cultivation method for large-size seedlings of Panopea japonica in autumn
  • Artificial cultivation method for large-size seedlings of Panopea japonica in autumn

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Embodiment 1

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

[0039] In the first ten days of October 2019, Japanese sea god clams with a shell length of more than 10cm, regular shell shape, no damage, and strong water pipe shrinkage were selected as brood shells. The brood shells were transported from Rajin City, North Korea to Dalian Shicheng Island Nursery Farm. 3 Temporary cultivation in cement ponds. During broodstock cultivation, the indoor natural water temperature is 18-20°C, the salinity is 28-33, and the density is 1 fish / m 3 , continuous inflation to keep the dissolved oxygen in the water above 4mg / L. The bait is concentrated diatom Nitzschia closterium, feeding 3 to 4 times a day, and the daily feeding amount is 8×10 3 cells / mL~1×10 4 cells / mL, feeding frequency and feeding amount depend on the daily observation of larva feeding. Change the water in full once a day.

[0040] Using a microscope, it was observed that the gonads of the Japanese sea god ...

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Abstract

The invention provides an artificial cultivation method for large-size seedlings of a Panopea japonica in autumn and relates to the technical field of aquaculture. The large-size seedlings of the Panopea japonica are cultured through water temperature characteristics of northern seas in autumn and spring in cooperation with an indoor seedling workshop and an outdoor earth ponds, parent shellfishesof the Panopea japonica are collected in October every year, the large-size seedlings of the Panopea japonica are cultured on a large scale through a series of innovative methods such as feeding larvae with artificial concentrated baits, collecting seedlings at the bottom of concrete pond and breeding in the middle of submerged net frames of the pond, the survival rate of bottom sowing aquaculture can be effectively improved, and artificial cultivation cost is reduced. The time of artificial seedlings cultivation in autumn is extended by 5 months longer than in spring, the size of shell length of the seedlings is raised by 70.0% and over higher than the artificial seedlings cultivation in spring, and the survival rate of the indoor seedlings is raised by 50.0% and over higher than 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 sea god clam seedlings. Background technique [0002] Panopea japonica is a kind of geoduck. The adult shell length is generally 8-15cm, and the fresh weight is 200-600g. It is distributed in the northern part of the Yellow Sea of ​​my country, the Korean Peninsula and the waters of Hokkaido, Japan. The silt bottom of 50 meters, the buried depth is 30 ~ 40cm. At present, the resources of indigenous Japanese sea god clams in my country are almost exhausted, mainly relying on imports from North Korea. Its water pipes are slightly golden, and its meat quality is comparable to the high-end BC geoduck (Gaoya Neptune clam P.abtupta) produced in Vancouver, Canada. It has large individuals and fast growth. , high meat yield, delicious meat, rich nutrition and other advantages, it is favored by consumers. The market price is 80-130 y...

Claims

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Application Information

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IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 霍忠明赵雯车宗豪刘括张兴志杨凤闫喜武
Owner DALIAN OCEAN UNIV
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