JP2011015672A - Method for harvesting seedlings of edible brown algae - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for harvesting seedlings of edible brown algae on the commercial level by improving efficiency in harvesting seedlings of edible brown algae.SOLUTION: The method for harvesting seedlings of edible brown algae includes: making embryos of edible brown algae stick to the net 2 from the natural stock 1; growing the seedlings upto the next year; and proliferating the seedlings by making them continuously adhere from the one net, to which the mature algal phycobionts adhere, to a plurality of the nets 2. The full culture method of the edible brown algae includes making embryos adhere to nets using rope cultured mature algal phycobionts as the parent. By the method, the efficiency of harvesting seedlings of edible brown algae is improved and with the harvested phycobionts the way developing to the culture of edible brown algae opens. Moreover, by conducting harvesting seedlings from cultured edible brown algae, harvesting seedlings and full culture on the commercial level of brown algae are realized.

Description

The present invention relates to an efficient seedling method for cypress.

The seaweeds of the brown alga Hibamatidae are found in various places in Japan, South Korea, and China, except Hokkaido, and grow mainly on the rocks in the intertidal zone. In Japan, fish are mainly caught by catching natural products, but in South Korea and China, natural shoots are caught in ropes and cultured. Hijiki is a useful seaweed that has been edible since ancient times in various parts of Japan, and is one of the most familiar seaweeds for Japanese people.

The elephant body of a cypress begins to appear in the fall, and dies out in the summer after the maturity of the following year. In the breeding mode, vegetative breeding in which the appendages called temporary roots remain on the rocks and form a straight solid again, and the hinoki is a sexually different body. There are two ways in which germinators grow.

The farming of hinoki has been carried out in Korea and China, but various aquaculture techniques have been studied in Japan. Non-Patent Document 1 describes in detail that Japanese pheasant aquaculture is possible, and describes that it can be cultivated at the business level, and the aquaculture technology is at the business level. However, all of these aquaculture produce natural hinoki buds from autumn to winter and use them as seedlings. Therefore, there is a trap between fishermen who deplete natural hinoki resources and capture and catch hinoki. There was a problem that happened.

Artificial breeding of cypress has also been studied, and Patent Document 1 describes a method for efficiently cultivating and growing seaweeds of the genus Honda from a fertilized egg. Patent Document 2 describes a method by which seedlings can be obtained by indoor culture of germinants obtained by tissue culture of temporary roots of Honda Wallaceae under optimum conditions. These techniques are mainly developed for the purpose of obtaining hinoki seedlings, but these methods require training on land, so there is a problem that they are not practical in terms of mass production and costs. there were.

Non-Patent Document 2 describes in detail the release of hinoki eggs and sperm and the detachment and establishment of young embryos, and the release of young embryos is popular in the period of 7-8 days from late May to early July. It is written that it becomes. From this, it can be easily imagined that a seedling seedling can be obtained by introducing a seedling device into a natural pheasant algae field at this time in order to naturally lay a young chick embryo. There are not so many flat and quiet hiji algae beds where seedlings can be harvested, and there is a problem that natural seedlings of hijiki at the business level are difficult.

JP 2004-187574 A JP 2006-129833 A

"Hijiki farming by sandwiching natural hinoki into ropes" Fishery Breeding Volume 56 No. 1 97-103 (2008) "Release of eggs and spermatozoa and detachment and establishment of young embryos" Journal of Japanese Society of Fisheries Science, Vol. 17, No. 9-12 (1931)

An object of the present invention is to improve the efficiency of hinoki seedling seedling and provide a hinoki seedling seedling method at a business level.

In order to solve the above-mentioned problems, the first invention is based on a net to which a chick larvae is attached, and the seedling is grown until the next year, and one to a plurality of sheets from the net on which the mature alga body has grown. This is a method for collecting hinoki, characterized in that seedlings are allowed to grow on the net and are propagated by repeating seedling. The second invention is a method for completely cultivating cypress, wherein a chick embryo is attached to a net using a cypress mature alga obtained by rope culture as a parent.

According to the 1st invention or the 2nd invention, it became possible to obtain the seedlings of a hinoki in large quantities and cheaply. This makes it possible to dramatically increase the efficiency of the hinoki seedling technique that has failed to obtain seedlings on a practical scale, and can spread rainbow trout aquaculture at a practical level. In addition, the seedling according to the present invention has a ripple effect that contributes to the propagation of natural cypress since the attachment of young embryos to the rocks around the net is also observed.

It is the perspective view which showed the seedling seedling from a natural hinoki community. It is the perspective view which showed the seedling to the some seedling device from the hinoki of the net | network which carried out natural seedling. It is the perspective view which showed the culture | cultivation by a longline type float ridge | wheat | wheat pinch | interposing the harvested elephant body in a rope. It is the graph which showed the growth result of the test culture hinoki. It is the perspective view which showed the seedling seedling from cultured hinoki.

Hereinafter, the method for raising hinoki seedlings according to the present invention and the results of cultivation using the seedlings will be described based on examples.

The seedling method from Example 1, a natural pheasant algae ground was shown in FIG. At the beginning of June, a natural hinoki community was covered with a seedling device (net), and alga bodies were passed through the nets to stand upright. The network used at this time may be a glue network. After that, the alga body repeated maturation and reproduction, and died out from the end of August to the beginning of September. Meanwhile, young embryos dropped and attached on the seedling device and grew. Those that were confirmed to have grown hinoki grown on the seedling device were either left in place or moved to the same environment (lower part of the tidal zone) and grown.

Example 2 The first embodiment of the present invention is shown in FIG. The hinoki harvested and grown in Example 1 was seeded by covering the seedling device from the top in the same manner as in Example 1 the following year. At this time, a plurality of seedling devices are used to significantly increase the number of seedlings attached. The implementation period was the same as that in Example 1, and the seedling container whose growth was confirmed was installed in the same place or on the coast of the same environment as in Example 1.

Using the hinoki harvested in Example 3 and Example 2, rope culture was performed as shown in FIG. Using a φ10 mm rope, the harvested elephants were sandwiched one by one at an interval of about 10 cm, and were wound around a longline float float. In addition, FIG. 4 shows the results of a growth survey conducted on 20 individuals by this aquaculture method for about two and a half months from March to May every about two weeks. According to the results, the average of 14.8 g of algal bodies is 223.6 g, grows about 15 times, and the seedlings obtained by the seedling method according to the present invention can be cultured at the business level. It was.

Example 4 A second embodiment of the present invention is shown in FIG. The elephant algae that had been cultivated until the end of May were subsequently cultivated (growth) in the same area, confirmed that they had matured, and then removed from the coral. In a state of being sandwiched between the ropes, it was fixed on a seedling device and installed in the same environment as in Examples 1 and 2, and seedling was performed. In addition, the seedlings obtained by this method can be used for seedling harvesting in Example 2 or aquaculture in Example 3 the following year. This completes the complete farming of hinoki.

1 Natural hinoki community 2 Seedling device (net)
3 Elephant growing on seedling device (net) 4 Elephant body of harvested elephant 5 Elephant body of elephant sandwiched between ropes 6 Long float float 7 Cultured hinoki fixed to the seedling device (net) together with the rope

Claims (2)

The seedlings are grown until the next year based on the net with the chick embryo seedlings attached, and seedlings are grown on one to several nets from the net where the mature algae grow, and the seedling is repeated. Method for seedlings of hinoki, which is characterized by growing in A complete culturing method for cypress, characterized by attaching young embryos to the net with the lobster mature alga obtained by rope culture as a parent

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