JP2004305197A - Offshore multi-stage cage culture of rising and falling extension rope type of perennial black-lip pearl oyster, pearl oyster and crocea clam in coral reef area - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to conduct multi-stage culture of shellfishes of perennial black-lip pearl oyster, pearl oyster and crocea clam through a whole year, by sinking a culture installation in case of typhoon, so as to avoid the typhoon, when the shellfishes which are conventionally subjected to rafting culture or extension rope-type suspending culture in a reef area referred to as Inoh in a dialect and a closed area of a coral reef are grown by avoiding the typhoon. <P>SOLUTION: Shellfish fry of the perennial black-lip pearl oyster, pearl oyster and crocea clam which are conventionally subjected to the rafting culture and the extension rope-type suspending culture in a reef lagoon area and the closed bay area of the coral reef in a suitable amount are filled into a pearl net, a multi-stage circular cage, etc., suspended from the culture installation of North Hokkaido Japan Sea rising and falling expansion rope type in an offshore area outside the coral reef, and controlled to be kept in a safe state by considering ocean weather information so as to sink the culture installation in case of the typhoon specific to the coral reef area and to surface the culture installation after passing of the typhoon, etc., so that the perennial black-lip pearl oyster, pearl oyster and crocea clam which occur in the coral reef area are grown into their imaginal shells by realizing culture thereof through a whole year. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an offshore aquaculture technique for perennial black mussels, white mussels, and turtle sprouts produced in coral reef areas.
[0002]
[Prior art]
Traditionally, perennial black mussels, white mussels and himeja cocoons from coral reefs have been cultivated only in the Inhos area, where typhoons are avoided and waves in the inner bay are calm.
[0003]
[Problems to be solved by the invention]
[0004]
The present invention, in order to avoid a typhoon so far, for perennial black mussels, white beetle and Himejako that have been rafted or longline cultivated in the coral reef Ino area and closed system, during the typhoon, the cultivation facilities are subsided and typhoons are avoided. The aim is to carry out multistage aquaculture of these shellfish throughout the anniversary.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, in the present invention, in order to avoid a typhoon, a sea area having a water depth of 30 m to 70 m outside a reef is set as a sectioned fishing right fishing ground for these shellfish.
[0006]
At the fishing grounds for these shellfish zoning fishery rights, aquaculture facilities will be settled easily with a small boat of 3 to 9 tons during a typhoon, and a northern Hokkaido Sea of Japan type sea sinking longline facility will be installed that can easily float after the typhoon has left.
[0007]
In these floating longline facilities, perennial black mussels, white mussels and himejako larvae from the coral reef area can be put in appropriate amounts in pearl nets or multi-stage round baskets, and year-round cultivation of these shells can be performed.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described based on examples with reference to the drawings.
In Fig. 1, perennial black mussels, white mussels, and turtle clams, which had been raft-cultured and longline-cultured in the coral reef lagoon area (lagoon = local name Ino) and closed inland bay areas, were used to obtain pearlnets. Alternatively, put an appropriate amount in a multi-stage round basket, etc., and place this offshore outside of the reef, at the northern Hokkaido Sea of Japan Sea-type floating sloping longline culture facility ("Fish Perishes" by Ichiro Sakai, published by Agricultural and Social Sciences Co., Ltd., June 25, 1982) 101 to 107 pages of Iwanai-gun fishermen's cooperative floating sedimentation facility), during the typhoon peculiar to the coral reef area, the cultivation facility sinks while considering the marine weather information, maintaining the safety of the culture facility, and the typhoon After that, by raising the aquaculture facilities, the anniversary culture of perennial black mussels, white mussels and himejako from the coral reef area was realized, It is formed.
[0009]
【The invention's effect】
The present invention is configured as described above and has the following effects.
[0010]
In order to avoid typhoons, it is necessary to use perennial black mussels, white mussels and himejako from coral reefs, which were conventionally limited to closed inner bays and Inoh, to the vast offshore areas outside the reefs. it can.
[0011]
Because of offshore aquaculture, fishery aging is relatively unlikely to occur with shellfish aquaculture in closed inner bays.
[0012]
Because it is a multi-stage shell cage culture, it is possible to produce aquaculture using the sea three-dimensionally.
[0013]
Since the present invention uses the existing pearl net and the multi-stage round basket net, the cost is low.
[0014]
According to the present invention, perennial black mussels, white mussels and himejako, which are coral reef areas such as Okinawa and Amami, can be used in aquaculture areas up to a vast offshore area outside the reef, which has great economic effects.
[0015]
According to the present invention, there is a possibility that cultured pearls can be produced from offshore cultured black mussels and white mussels.
[0016]
According to the present invention, large seaweeds can be cultivated, and the seaweeds can be applied to offshore cultivation of algae-eating prawns, sea urchins, mussels and the like.
[Brief description of the drawings]

Claims (1)

The perennial black mussel, white mussel and himejako larvae 1 that had been raft-cultured and long-lined cultivated in the coral reef lagoon area (lagoon-local name Ino) and in closed bays have been used as pearl net 2 or multi-stage. An appropriate amount is put in a ceremony-type basket, etc., and this is dripped offshore from the reef outside the reef to the northern Hokkaido Sea of Japan Sea-Type Floating Longline Farming Facility 4 to examine marine weather information during a typhoon peculiar to coral reef areas. 5 While maintaining the safety of the aquaculture facilities, and after the typhoon has left, raising the aquaculture facilities 6 allows the yearly cultivation of perennial black oysters, white oysters, and himejako from the coral reef area. Realize and grow up to adult shellfish.

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