Breeding and culturing method of razor clam (sinonovacula constricta) fry

By temporarily raising, fattening, and protecting blood clam seedlings in suitable sea areas, the problem of low success rate in blood clam seedling cultivation has been solved, achieving efficient breeding and rapid growth of blood clam seedlings, and improving the success rate and survival rate of blood clam farming.

CN120458044BActive Publication Date: 2026-07-24YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI +1
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Patent Information

Application Number
CN202510769265.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-06-10
Publication Date
2026-07-24
Estimated Expiration
2045-06-10

AI Technical Summary

Technical Problem

In the process of blood clam farming, the long-term breeding in a single area leads to a decline in the ability to resist adverse conditions and an unsuitable seedling environment, resulting in a low reproduction rate and slow growth of blood clam seedlings. Furthermore, the breeding environment under natural conditions is affected by factors such as water temperature, salinity, and predation by natural enemies, resulting in a low success rate of seedling breeding.

Method used

Blood clams from the coast of Tangshan are transported to the coastal areas of Zhejiang or Shandong for bottom seeding and temporary rearing, as well as indoor fattening to promote maturity. Seedlings are raised and protected in suitable marine environments. By adjusting water temperature, feeding specific feeds, and inducing spawning, the gonadal maturity rate of blood clams is improved. Afterward, the seedlings are protected in nearshore tidal flats or open sea areas, and finally, they are bottom seeded for cultivation in the coastal areas of Tangshan.

Benefits of technology

It significantly improved the success rate of blood clam seedling cultivation and preservation, shortened the blood clam cultivation time, and made the blood clam seedlings highly adaptable and fast-growing, thus improving the overwintering survival rate and enabling the blood clam products to be launched on the market earlier.

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Abstract

The present application belongs to the technical field of breeding and culturing of shellfish, and relates to a kind of breeding and culturing method of hard clam seedlings, which comprises the following steps: taking local wild hard clams in Tangshan coastal area as seed clams, transporting the seed clams to coastal mudflat ponds or outdoor ponds in Zhejiang or Shandong coastal area for bottom sowing and temporary breeding in early April every year, then placing the seed clams in a breeding workshop in Zhejiang or Shandong coastal area for fattening and maturation in mid-late May, inducing spawning and breeding seedlings after the gonad of the seed clams is matured, then preserving the seedlings in coastal mudflat ponds or open sea area in Zhejiang or Shandong coastal area to obtain large-size hard clam seedlings, and transporting the large-size hard clam seedlings to Tangshan coastal area for bottom sowing and culturing after the preservation of the seedlings is completed. The present application adopts the "relay type" large-size hard clam seedling culturing technology of bottom sowing and temporary breeding, indoor fattening and maturation, indoor seedling breeding and preservation in coastal mudflat ponds or open sea area, which significantly improves the success rate of seedling breeding, seedling preservation and culturing of hard clams.
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