The experience of growing a seaside scallop in a bottom aviary at a fish breeding site in the Kozmina Bay of Nakhodka Bay. Installation recommendations

Abstract

The article discusses the experience of growing a seaside scallop in a bottom aviary at a fish hatchery in the Kozmina Bay of Nakhodka Bay, and provides recommendations for installing and maintaining a bottom aviary.
The aviary was designed and installed in 2014. It has been tested in Kozmina Bay, and has made it possible to effectively grow scallops by bottom method in a small area. The main task of this project is to keep the planted scallop in a specific bottom area. Nylon fabric was used as a material for the wall of the enclosure. To ensure buoyancy, PVC surfacing was used in this design. The task of keeping the aviary in a given place was, for the most part, solved using gravity anchors of the GBTS. Installation and repair of the enclosure is described in paragraphs 5 and 6 of this article. In the eight years after the installation of the aviary, more than 800 thousand individuals of the Primorsky scallop were planted on the bottom area and for several years the gradual withdrawal of marketable products has been carried out. The aviary in Kozmina Bay withstood the passage of destructive typhoons that struck Primorye in recent years (including typhoon Maysak 2020). As a result of the work carried out at the fish breeding site, a kind of cluster was formed: scallop spat is also planted on the elements of GBTS, cages, the outer shell of collectors, which, when detached, automatically turns out to be in the aviary. This cluster can be supplemented with small artificial shelters (reefs) for trepang and facilities suitable for the installation area in order to obtain a sustainable multicultural economy.