A method for improving the survival rate of artificially bred juvenile giant clam multiplication and release

Abstract

The invention discloses a tridacna larvae artificial breeding method capable of improving the survival rate during proliferation and releasing. The method includes the steps of: performing selection and treatment on tridacna larvae for artificial breeding, and transporting the treated tridacna larvae to a sea area for proliferation and releasing; taking the tridacna larvae out of a flowing water bin, performing semi-buried treatment on the taken tridacna larvae in a calcium carbonate-material releasing base, then putting the releasing base with the buried tridacna larvae in a mesh cage rack with a lid, fixing the mesh cage rack on the bottom of the sea, and keeping the distance between the mesh cage rack and the slack tide water level at 3-15 meters and the distance between the mesh cage rack and the bottom surface of a seabed base at 30 cm or above; when the length of shells of the tridacna larvae grows to 6 cm or above, removing the tridacna and mesh cage rack, putting the removed tridacna and mesh cage rack in a coral reef area which has smooth water flow, light intensity of 6,000-12,000 LX and flat parts for growth, cleaning covering matter in time in a typhoon season, performing recovery and fixation on rollover tridacna bases, and eliminating harmful organisms. Through the tridacna larvae artificial breeding method capable of improving the survival rate during proliferation and releasing, the survival rate of the tridacna larvae can be improved effectively, and technical support can be provided for proliferation of the tridacna resource and ecological restoration of coral reefs in China.

Description

Technical field: [0001] The invention belongs to the fields of artificial breeding of giant clam shellfish and restoration of ecological resources in the marine fishery industry, and in particular relates to a method for improving the survival rate of artificially bred juvenile giant clam shellfish proliferation and release. Background technique: [0002] Tridacna is the largest species of marine bivalve mollusk belonging to the clam order, family Tridacnidae (Tridacnae) of the genus Tridacna or the genus Tridacna. Distributed in the tropical and subtropical oceans of the Indian Ocean and the Pacific Ocean, especially in the South China Sea, the Philippines, Indonesia and Australia. In my country, it mainly exists in the coral reef areas of Nansha Islands, Xisha and Hainan Island, and is one of the main functional organisms of coral reefs. The largest shell length of giant clam is recorded to be 1.8 meters, and the weight exceeds 300 kilograms. The growth rate of giant clam...

AI Technical Summary

Problems solved by technology

However, it takes at least 2 years for artificially cultivated giant clams to grow to 250g in industrialized running water, and it is difficult to reach the conventional bottom sowing specifications. Therefore, if the technical problem of releasing the survival rate of juvenile giant clams (within 250g) is not solved, it will have a great impact on our country. Resource multiplication and coral reef ecological restoration form a technical bottleneck

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