JP2010259418A - Base panel material for rooting spat of biodegradable bivalve, and method for growing bivalve - Google Patents
Base panel material for rooting spat of biodegradable bivalve, and method for growing bivalve Download PDFInfo
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- JP2010259418A JP2010259418A JP2009125824A JP2009125824A JP2010259418A JP 2010259418 A JP2010259418 A JP 2010259418A JP 2009125824 A JP2009125824 A JP 2009125824A JP 2009125824 A JP2009125824 A JP 2009125824A JP 2010259418 A JP2010259418 A JP 2010259418A
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- bivalve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
Description
本発明は、生分解性二枚貝類稚貝の着底用基盤材、二枚貝類の増殖方法に関するものである。 The present invention relates to a base material for bottoming of biodegradable bivalve molluscs and a method for breeding bivalves.
近年、アサリなどの二枚貝類の減少が著しくなってきている。これは、干潟などの浅場が減少し、二枚貝類の稚貝が着底できる場所がなくなってきたためである。二枚貝類の中でもアサリなどは、幼生あるいは稚貝のとき、着底に際して小石の脇などの比較的安定した場を好むことが知られており、タンパク質からなる足糸を小石などに付着させて着底していく。しかし、安定して着底できる場がなくなった今、稚貝は、波に流され、成貝まで成長することはできない。 In recent years, the decline of clams such as clams has become remarkable. This is because shallow areas such as tidal flats have decreased and there is no longer a place where bivalve larvae can settle. Among clams, clams are known to prefer relatively stable places such as the side of pebbles at the bottom when they are larvae or juveniles. I'll bottom out. However, now that there is no place for stable landing, juveniles are washed away by the waves and cannot grow into adult shellfish.
アサリなどの二枚貝類を増殖するために、稚貝が着底しやすい安定した場所を作り、稚貝の着底を促し、稚貝を成貝まで成長させる取り組みが行われてきた。例えば、レキや粗砂を砂泥に混ぜ込んで底質を改良して着底場所を設けた。しかし、レキ・粗砂の埋没により、粗い底質状態が持続せず、稚貝は着底せずに波に流されていった。 In order to proliferate clams such as clams, efforts have been made to create a stable place where young larvae are easy to settle, encourage the larvae to settle down, and grow the larvae to adult shellfish. For example, reki or coarse sand was mixed with sand and mud to improve the bottom quality and provide a landing site. However, due to the burial of rough sand and coarse sand, the rough bottom condition was not maintained, and juveniles were washed away by waves without landing.
そこで、本発明は、二枚貝の稚貝の着底率が高く、一度着底したら長期にわたって安定して着底し続けることができる基盤材を提供することを目的とする。 Therefore, an object of the present invention is to provide a base material that has a high bottoming rate of bivalve larvae and can be settled stably for a long period of time once it is bottomed.
上記目的を達成するために、本発明品の基盤材は、網状骨格体で、適度な大きさ、割合の空隙がある構造とした。また、原料は全て生分解性の樹脂を使用したことを特徴とする。 In order to achieve the above object, the base material of the product of the present invention is a reticulated skeleton body with a structure having an appropriate size and proportion of voids. Moreover, all the raw materials used the biodegradable resin.
本発明品の稚貝着底用基材を設置することで、その設置場所周辺の潮流が緩やかになり、稚貝は基盤材に着底しやすくなる。また、網状骨格体の構造は、多くの稚貝を着底させることが可能で、着底後は、波で容易に流失することなく成貝まで成長することができる。 By installing the base material for the bottom of the shellfish of the present invention, the tide around the place of installation becomes gentle, and the shellfish can easily bottom the base material. In addition, the structure of the reticulated skeleton body can allow many young shellfish to settle, and after the bottom, it can grow to adult shellfish without being easily washed away by waves.
さらに、生分解性の樹脂でできた本基盤材は、収穫時には手で容易に崩せ、成貝を収穫しやすくなっている。また、本基盤材が海中に残るようなことがあっても、生分解性樹脂でできているため、水と二酸化炭素にまで分解され、海洋環境を守ることができる。 Furthermore, the base material made of biodegradable resin can be easily broken by hand at the time of harvest, making it easier to harvest adult shellfish. Even if the base material remains in the sea, it is made of biodegradable resin, so it can be decomposed into water and carbon dioxide to protect the marine environment.
本発明の稚貝着底用基盤材は、多くの稚貝の着底が見られ、特に、足糸を出すアサリなどの二枚貝類が、本基盤材に足糸を付着させやすく、安定して着底することができる。また、一度着底した稚貝は波で容易に流されることなく成貝まで成長する。さらに、本基盤材は、着底した稚貝を食害する生物の侵入を防ぐ役目も果たし、天然の着底場所以外では見られない殻長２５ｍｍ以上の成貝まで成長させることができる。 The base material for the bottom of the larvae of the present invention shows the bottom of many larvae, and in particular, bivalves such as clams that give out the foot thread are easy to attach the foot thread to the base material and are stable. Can bottom. In addition, juveniles that have settled once grow up to adults without being easily washed away by waves. Furthermore, this base material also plays a role of preventing the invasion of organisms that damage the larvae that have settled, and can be grown to adult shells with a shell length of 25 mm or more that are not seen anywhere other than the natural basin.
二枚貝類の増殖に適するように、海中に稚貝の着底場所を提供するこの発明において、この実施の形態は、特にアサリの増殖に適した稚貝の着底場所としてなされる。図１に本発明品の実施形態を示す。５０ｃｍ×２０ｃｍ×１５ｃｍの本基盤材を１６個、図１の様に配置した。 In the present invention that provides a place where a larvae is settled in the sea so as to be suitable for the growth of bivalves, this embodiment is made as a place where the larvae are particularly suitable for the propagation of clams. FIG. 1 shows an embodiment of the product of the present invention. Sixteen 50 cm × 20 cm × 15 cm substrate materials were arranged as shown in FIG.
２００７年９月から２００９年３月まで、愛媛県西条市の干潟で転石域から５０ｍ離れた付近で、満潮時に水深３ｍになる所に、上述に示した形態で本基盤材を設置し、天然のアサリの着底状況を調べた。 From September 2007 to March 2009, this base material was installed in the form shown above at a depth of 3 m at high tide near a tidal flat in Saijo City, Ehime Prefecture at a distance of 50 m from the boulder area. I checked the bottom of the clams.
結果は、本基盤材周辺で、殻長２ｍｍ未満のアサリ固体が１３００個体／平方メートルが確認され、これは、アサリの分布が集中している転石域と同等であった。一方、本基盤材を設置していない区域では、３５０個体／平方メートルであった。また、本基盤材内に着底していたアサリの個体数は、殻長９．３〜３４．５ｍｍのアサリが３６個体、殻長２１．１〜３８．０ｍｍのアサリが５７個体で、比較的大きな成貝を確認することができた。 As a result, 1300 individuals / square meter of clam solids with a shell length of less than 2 mm were confirmed around the base material, which was equivalent to the boulder area where the distribution of clams was concentrated. On the other hand, in the area where this base material was not installed, it was 350 individuals / square meter. The number of clams that settled in the base material was 36 for clams with a shell length of 9.3 to 34.5 mm and 57 for clams with a shell length of 21.1 to 38.0 mm. Large adult shellfish could be confirmed.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2009125824A JP2010259418A (en) | 2009-04-28 | 2009-04-28 | Base panel material for rooting spat of biodegradable bivalve, and method for growing bivalve |
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| JP2009125824A JP2010259418A (en) | 2009-04-28 | 2009-04-28 | Base panel material for rooting spat of biodegradable bivalve, and method for growing bivalve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102043611B1 (en) * | 2018-12-21 | 2019-11-12 | 대한민국 | culturing method for shellfish using an artficial grass) |
| KR102094038B1 (en) * | 2019-10-30 | 2020-03-30 | 대한민국 | Culturing method for shellfish using an artficial grass |
| KR102094037B1 (en) * | 2019-10-30 | 2020-05-26 | 대한민국 | culturing method for shellfish using an artficial grass |
| WO2021029576A3 (en) * | 2019-08-13 | 2021-04-01 | 박송범 | Individual oyster farming apparatus |
-
2009
- 2009-04-28 JP JP2009125824A patent/JP2010259418A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102043611B1 (en) * | 2018-12-21 | 2019-11-12 | 대한민국 | culturing method for shellfish using an artficial grass) |
| WO2021029576A3 (en) * | 2019-08-13 | 2021-04-01 | 박송범 | Individual oyster farming apparatus |
| KR102094038B1 (en) * | 2019-10-30 | 2020-03-30 | 대한민국 | Culturing method for shellfish using an artficial grass |
| KR102094037B1 (en) * | 2019-10-30 | 2020-05-26 | 대한민국 | culturing method for shellfish using an artficial grass |
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