42 results about "Perinereis aibuhitensis" patented technology

The invention relates to a method for perinereis aibuhitensis heteronereis cultivation and synchronous collection and belongs to the technical field of aquaculture offspring seed breeding. The method is characterized by mainly comprising the steps of cultivation pool design, homo-nereis selection, breeding methods and management and heteronereis synchronous collection. Heteronereis cultivated by the method can all reach over 2.0g, not only is the brood amount improved, but also gametal quality is improved to a certain extent; simultaneously synchronous collection of the perinereis aibuhitensis heteronereis is achieved, the problem that part of heteronereis discharge sperm and lay eggs is solved, collection at night is replaced with collection in the daytie, and not only is heteronereis collection operation convenient, but also offspring seed breeding after the heteronereis collection operation is also greatly facilitated.

The invention discloses an indoor intensive production method of perinereis aibuhitensis seeds, belonging to the field of aquaculture. The method comprises the steps of preparing a cement pond, preparing mud for culturing, preparing perinereis aibuhitensis culture boxes, distributing larva seeds, breeding the seeds, daily managing and enabling the seeds to emerge. In the cement pond, the multiple layers of small perinereis aibuhitensis culture boxes are arranged in a staggered stacking way, the attachment surface area of larvae in the cement pond can be increased, indoor intensive high-density production of the perinereis aibuhitensis seeds is realized, the seed output of the cement pond of a unit water body is increased, outdoor earth pond culture is not needed, the seeds with the large size of 20 to 30mm are directly obtained, and large-scale intensive production of the seeds is realized; if the perinereis aibuhitensis seeds are sold or broadcast remotely, the perinereis aibuhitensis seeds can be conveyed with the boxes and soil, convenience and quickness are realized, and damage caused in the collection, transfer and conveying processes of perinereis aibuhitensis larvae is avoided.

The invention discloses a method for the three-dimensional and artificial seedlings cultivation of the perinereis aibuhitensis, which mainly comprises the steps of: (1) fishing and disinfecting the heteronereis; (2) laying eggs, hatching and cultivating the planktonic larva; (3) three-dimensionally cultivating the benthic larvae; and (4) seedling emerging. The key measures comprise the steps of: putting four setiger intermediate-later stage nectochaete into a polyethylene water tank for the three-dimensional cultivation, cultivating by flowing water, and properly mixing the single-cell algae, the EM (effective microorganisms) bacterium with various artificial baits. After the measures are used, the density of the larvae is reduced, the mutual massacre among the individuals is reduced, the nutritional requirement of each-stage larva and the good and stable water quality environment are guaranteed, the survival rate of the larva is greatly improved, the breeding rate from the fertilized ovum to the sand silkworm seedling with the length of 1cm reaches at 42.3%, and the seedling yield per unit area is improved at 11.4*104 numbers / m<2>, so that the survival rate, the breeding rate and the seedling yield per unit area are greatly improved compared with the existing seedlings cultivation mode. The method is convenient to operate, can prevent the seedlings from being damaged caused by sand flushing and seedling driving, and is good for the long-distance transporting and the planting of the seedlings.