Method for artificial propagation of mytilus coruscus in intertidal zone of rocky reef phase

Abstract

The invention provides a method for artificial propagation of mytilus coruscus in an intertidal zone of a rocky reef phase. According to the invention, mytilus coruscus juveniles are temporarily conserved at a sea area; the mytilus coruscus larvae are wrapped in net bags prepared with a papyrus material; the net bags with the mytilus coruscus larvae are connected in series, and are placed into the intertidal zones of the rocky reef phase or a dimension stone phase of a natural sea area, such that the artificial propagation of the mytilus coruscus is completed. According to the invention, thick hemp ropes are selected as an attachment base, and thin hemp ropes are wound on the thick manila ropes, such that the base surface area to which mytilus coruscus byssuses are attached is increased. The net bags used for wrapping the mytilus coruscus larvae and the hemp ropes used for attachment of the mytilus coruscus larvae can be rapidly digested under seawater erosion, such that artificial removal is not needed. Therefore, manual labor is effectively reduced, and plastic garbage is not brought to the environment. Mytilus coruscus can first attach to the net bags or the hemp ropes, and with the digestion of the net bags and the hemp ropes, the mytilus coruscus can attach to rocky reef gaps. With the mytilus coruscus secondary attachment manner, mytilus coruscus larvae attachment rate on the rocky reef is greatly improved, and the mytilus coruscus artificial propagation effect is improved.

Description

technical field [0001] The invention relates to an artificial multiplication method of thick-shelled mussels, in particular to a method for artificially multiplying thick-shelled mussels in the intertidal zone of rock reef facies, and belongs to the technical field of fishery resources conservation. Background technique [0002] Thick-shelled mussels belong to the mollusk phylum and bivalves, commonly known as mussels and sea reds. They are mainly distributed in Japan, North Korea, and my country's Yellow Sea, East China Sea, and Taiwan. Among them, the Shengsi Islands in Zhoushan and the Yushan Islands in Ningbo And the natural distribution of Nanji Islands in Wenzhou is particularly obvious. In the natural state, they are mostly attached to the offshore rocks in the wave impact zone. Because of its large body and fat meat, it is an important economic seafood species along the coast of Zhejiang Province. Many local residents rely on harvesting mussels to make a living, so t...

AI Technical Summary

Problems solved by technology

The above two methods have certain significance for the natural multiplication of thick-shelled mussels, but there are still many problems in actual operation, which are mainly reflected in: the first method is to disperse in the exposed intertidal zone, generally in the The seawater spreads after low tide, but thick-shelled mussels rely on silk to attach to rocks or other attachments. Usually, the time for mussel silk to secrete and fully fix is ​​more than 12 hours, while the time for submersion in high tide is generally less than 3 hours , so in one tidal cycle, the spreading mussel seedlings will be swept away by seawater; the second method is an improvement on the first method, and a cover net is placed in the spreading area to prevent the escape of mussels, which to a certain extent However, the intertidal zone is mostly gravel and uneven, and the escape of mussel seedlings after covering the net is also very obvious.

Therefore, the above two methods are not the best choice for natural multiplication of mussels

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