Biological scavenging method for removing fouling organisms on mariculture scallop cages and shells

Abstract

The invention discloses a biological scavenging method for removing fouling organisms on mariculture scallop cages and shells. According to the biological scavenging method, sea urchins are subjected to mixed culture in the scallop cages, and a scallop-urchin comprehensive culture system is established; 1-2 hemicentrotuspulcherrimuses undergo mixed culture each time 30 chlamysnobilises, bay scallops or chlamysnobilises are cultured; and 1-2 hemicentrotuspulcherrimuses undergo mixed culture each time 10 pectenyessoesises are cultured. The biological scavenging method has the advantages that culture cost increased due to clearing of attaching organisms is reduced; the growing speed of the scallops is increased, and quality is improved; a low-cost sea urchin culture method is provided; and the sea urchin culture survival rate and culture economic benefit are improved.

Description

technical field [0001] The invention relates to the field of mariculture, in particular to a method for biologically removing fouling organisms on mariculture scallop cages and shells. Background technique [0002] Fouling organisms are a general term for plants, animals, and microorganisms that adhere to the surface of aquaculture facilities and organisms. my country's mariculture production ranks first in the world, and scallops are an important species of mariculture. Hanging cage raft culture is one of the main ways of scallop culture at present. Scallop culture cages and shells provide a large amount of attachment substrates for fouling organisms, and a large number of fouling organisms will adhere to them during the breeding process, which will have many negative effects on farming. The impacts include: (1) The weight of the breeding cage is greatly increased, causing the cage to be torn and damaged; (2) The force on the floating raft is increased, and in severe case...

AI Technical Summary

Problems solved by technology

Scallop culture cages and shells provide a large amount of attachment substrates for fouling organisms, and a large number of fouling organisms will adhere to them during the breeding process, which will have many negative effects on farming

The impacts include: (1) The weight of the breeding cage is greatly increased, causing the cage to be torn and damaged; (2) The force on the floating raft is increased, and in severe cases, the raft may even sink; (3) The upper part of the breeding cage is blocked. The mesh will reduce the concentration of dissolved oxygen and bait in the breeding cage and affect the growth of scallops; (4) filter-feeding fouling organisms such as sea squirts and mussels compete with scallops for bait, reducing the growth rate and plumpness of scallops

[0003] At present, the fouling organisms on the scallop cages and shells are mainly removed by physical means such as upside down or clearing the cages, but this method requires a lot of labor, greatly increases the cost of breeding, and will increase the exposure of scallops to the air, greatly increasing reduce the mortality of scallops; and the chemical method of using antifouling coatings is not only expensive, but also emits toxic substances into the seawater to pollute the marine environment

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