JP4681764B2

JP4681764B2 - Firefly growing method and apparatus

Info

Publication number: JP4681764B2
Application number: JP2001210811A
Authority: JP
Inventors: 邦男安田
Original assignee: 株式会社グリーンメンテナンス
Priority date: 2001-07-11
Filing date: 2001-07-11
Publication date: 2011-05-11
Anticipated expiration: 2021-07-11
Also published as: JP2003023920A

Description

【０００１】
【発明の属する技術分野】
本発明は、ゲンジホタルやヘイケホタル等の蛍を人工的に育成するために開発された、産卵・孵化から蛹化に到る蛍の育成方法とその装置に関する。
【０００２】
【従来の技術と課題】
蛍のライフサイクルは、良く知られているように、夏に、湿潤環境である水辺に産卵された卵が孵化した幼虫が水中に落下し、秋、冬の間に、水中のカワニナ等の貝類を餌として脱皮を繰り返し、春に、終齢幼虫となり、陸上に移動して土中に潜り込んで蛹化し、夏に蛹から羽化して成虫となり、交尾して産卵の後、その一生を終え、１世代のライフサイクルが完了するようになっている。
【０００３】
近時、水辺環境の悪化から蛍の成長に適した環境が失われており、このような状況に鑑み、蛍の人工繁殖や放流が盛んに行われているが、いまだ効率的に蛍の人工育成に成功した事例は少ない。
【０００４】
一般的に行われている蛍の人工育成方法としては、孵化した蛍の幼虫を、底の浅い孵化容器（パッド）に入れ、この水中に、カワニナの殻を破って、殻中の身を細かく裁断した細切れ身や、微小な貝である稚貝を投入し、これらを幼虫の餌としていたが、この方法では、細切れ身が腐り、孵化容器内の水が腐敗するため、人手によって頻繁の水の入れ換え作業を行わなければならず、又この水の入れ換え時に、水中に生存する蛍の幼虫をスポイドで吸い上げて移し換えるという時間と根気の必要な作業を行わなければならない。
【０００５】
また餌となるカワニナは、野外の自然の川から採集されることになるが、一度に大量に採集すると、その後の維持が難しく、餌として利用される前に死滅したり、自然の川のカワニナを餌とし、自然の中で生息する蛍にも悪影響を及ぼし、自然破壊につながることもあった。
【０００６】
更にまた、孵化容器や繁殖容器の水中は、その酸素濃度（溶存酸素量）が１００％に近い状態に維持し、且つ水温も２６度前後に維持する必要があった。このためには、孵化容器や繁殖容器には空調設備を付帯させて一定の温度に保ち、且つエアーコンプレーサーを付帯させて２４時間稼動によって水中を曝気して溶存酸素量を維持する必要があり、その維持管理費用が極めて高額になっていた。
【０００７】
本発明は、これらの難点を一挙に解消し、効率的な蛍の育成方法とその装置を提案することを解決課題とするものである。
【０００８】
【課題を解決するための手段】
上記課題を解消するために、請求項１に係る発明は、実施形態の参照符合を付して示せば、図１に示すように、蛍の幼虫Ａおよびその餌であるカワニナ等の貝類Ｂの生息に適合する河川等の自然の水流１中に、該水流１が容器内部２ａを通過可能な網容器２を配置し、この網容器２の内部２ａにカワニナ等の貝類Ｂを入れ、且つカワニナ等の貝類の好む野菜くず等の餌Ｃを投入して、貝類Ｂの育成を助長して稚貝などの貝類へを繁殖させ、一方、主に、図３に示すように、雌雄の成虫蛍Ｄを入れ、成虫蛍Ｄが逃げないように閉鎖した産卵容器本体３とその底部に設けた網床４とからなる産卵容器５の網床４に水苔等の産卵床６を載置し、網床４の下部に水面が網床に接するか、網床に近接する孵化容器７を配置し、雌雄の成虫蛍Ｄの交尾により産卵床６に産卵した卵が孵化して生まれた蛍の幼虫Ａが網床４の網目を通過して孵化容器７の水中に落下するようにし、この孵化容器に落下した蛍の幼虫を網容器２の内部２ａに入れ、網容器２内で繁殖する貝類Ｂを餌として蛍の幼虫Ａが網容器２の内部２ａで終齢幼虫Ａａ（図５）に到るまで育成するようにした蛍の育成方法に係る。
【００１０】
また請求項２に係る発明は、図１に示すように、蛍の幼虫Ａおよびその餌であるカワニナ等の貝類Ｂの生息に適合する河川等の自然の水流１中に、該水流１が容器内部２ａを通過可能な網容器２を配置し、この網容器２の内部２ａにカワニナ等の貝類Ｂを入れ、且つカワニナ等の貝類の好む野菜くず等の餌Ｃを投入して、貝類Ｂの育成を助長して稚貝などの貝類へを繁殖させ、一方、図４に示すように、前記産卵容器５を前記網容器２の網目上面２ｂに載置し、産卵容器５内の産卵床６に産卵した卵が孵化して生まれた蛍の幼虫Ａが網床４の網目及び網容器２の網目上面２ｂを通過して、直接に網容器２の内部２ａに落下するようにし、網容器２内で繁殖する貝類Ｂを餌として蛍の幼虫Ａが網容器２の内部２ａで終齢幼虫Ａａ（図５）に到るまで育成するようにした蛍の育成方法に係る。
【００１１】
また請求項３に係る発明は、図１に示すように、蛍の幼虫Ａおよびその餌であるカワニナ等の貝類Ｂの生息に適合する河川等の自然の水流１中に、該水流１が容器内部２ａを通過可能な網容器２を配置し、この網容器２の内部２ａにカワニナ等の貝類Ｂを入れ、且つカワニナ等の貝類の好む野菜くず等の餌Ｃを投入して、貝類Ｂの育成を助長して稚貝などの貝類へを繁殖させると共に、網容器２の内部に蛍の幼虫Ａを入れ、網容器２内で繁殖する貝類Ｂを餌として蛍の幼虫Ａが網容器２の内部２ａで終齢幼虫Ａａ（図５）に到るまで育成するようにし、図５及び図６に示すように、前記網容器２に設けた開口部２ｃ付近上面に、土８を内部に敷設した蛹化容器９を載置し、該容器内の土８と前記網容器２内の水面１ａとを連通する通路部材１０を設け、網容器２内の終齢幼虫Ａａが通路部材１０を通って蛹化容器９内の土８内に潜り込み、蛹化Ａｂするようにした蛍の育成方法に係る。
【００１２】
また請求項４に係る発明は、図１に示すように、内部２ａに収容したカワニナ、その稚貝等の貝類Ｂ、及び蛍の幼虫Ａが外部に逃げることができないが、内部２ａを水流が通過可能な網目を有する網目容器本体１１と、該容器本体１１の内部に上記貝類Ｂや蛍の幼虫Ａ及びこれらの餌Ｃを投入可能で、閉鎖可能な開口部２ｃと、からなる網容器２と、図４に示すように、該容器本体１１の網目上面２ｂに載置され、成虫蛍Ｄが逃げないように閉鎖した産卵容器本体３と該本体３の底部に設けた網床４と網床に載置した水苔等の産卵床６とからなる産卵容器５と、を備えた蛍の育成装置に係る。
【００１４】
また請求項５に係る発明は、図１に示すように、内部２ａに収容したカワニナ、その稚貝等の貝類Ｂ、及び蛍の幼虫Ａが外部に逃げることができないが、内部２ａを水流が通過可能な網目を有する網目容器本体１１と、該容器本体１１の内部に上記貝類Ｂや蛍の幼虫Ａ及びこれらの餌Ｃを投入可能で、閉鎖可能な開口部２ｃと、からなる網容器２、を備え、図５及び図６に示すように、前記網容器２に設けた開口部２ｃ付近上面に、土８を内部に敷設した蛹化容器７を載置し、該容器内の土８と前記網容器２内の水面１ａとを連通する通路部材１０を設けてなる蛍の育成装置に係る。
【００１５】
【発明の実施の形態】
図１は、本発明の一実施形態の使用状態を示す図であり、自然の水流１を備えた河川等に吊り紐１２で吊り下げて水中に網容器２を配置した状態を示す。図２は、網容器２を河川などの水流１中に配置した状態を示す。この網容器２の大きさや形状は特に限定されることはなく、例えば、横幅が５０cm、高さと奥行が３０cmの直方体からなるが、直径が３０cmの長い円筒体であってもよい。
【００１６】
網容器２は、少なくとも、図１に示すように、その側面周囲１１ａが網体から形成され、且つその上面２ｂも網体から形成され、その底面１１ｂは合成樹脂や金属の板体によって形成された網目容器本体１１と、該容器本体１１の内部２ａに上記貝類Ｂや蛍の幼虫Ａ及びこれらの餌Ｃを投入可能で、閉鎖可能な開口部２ｃとによって構成されている。開口部２ｃを閉鎖可能とするために、図示のように一端部を枢軸部１３ａとする蓋体１３が留め金具、係止布やファスナー等の止め具によって開口部２ｃに開閉可能に枢着されている。
【００１７】
上記開口部２ｃから網容器２の内部２ａに、カワニナ等の貝類Ｂと蛍の幼虫Ａとを図示のように多数入れ、且つ野菜くずや米等のカワニナＢなど貝類Ｂが好む餌Ｃを投入し、その底部に岩、小石及び砂Ｅを適宜に配置するようになっている。
【００１８】
また網容器２は、図２にも示すように河川等の水中に設置され、適宜吊り紐１２に吊るされ、該吊り紐１２を操作することによって、網容器２は、その内部２ａの蛍の幼虫Ａの成長に合わせて水面１ａに対して上下動できるようになっており、且つその水流１が網容器２の内部２ａを通過可能となっている。尤も、網容器２を、その内部２ａに大きな岩を入れるなどして適当な固定手段によって、河川等の底部に係留させるようにしてもよい。
【００１９】
網容器２の網目容器本体１１は、水流１が網目容器本体１１の内部２ａを通過可能であるが、内部２ａに収容される蛍の幼虫Ａやカワニナ等の貝類Ｂが網目を通して外部に逃げない程度の網目、例えば１〜２ｍｍの網目或いはそれ以下のメッシュの網体によって、該本体１１の側面周囲１１ａ及び上面２ｂが形成され、また底面１１ｂも網体によって形成してもよい。更にこれらの網体は周知のサランネット等合成樹脂製のネットによって形成してもよいが、河川等に生息するザリガリ等が網を破って内部２ａに侵入しないように金網によって形成することが好ましい。また、二重の網体とし、内側をメッシュの小さい合成樹脂性のネットとし、外側をメッシュの比較的に大きく強靱な金網としてもよい。
【００２０】
図３は、蛍の幼虫Ａを産卵孵化するための産卵・孵化容器５，７を示す。産卵容器５は、雌雄の成虫蛍Ｄを入れ、成虫蛍Ｄが逃げないように閉鎖した産卵容器本体３と、その底部に設けた網床４と、該網床４の上面に載置した産卵床６と、からなる。産卵容器本体３の上面３ａと側面３ｂは図示のように網体によって形成してもよいが、透明な合成樹脂体によって形成してもよい。なお、上面３ａには開放部３ｃを設け、これに蓋体３ｄを開閉可能に取り付けるようにしてもよい。そして産卵容器本体３の底面である網床４の下部に水面が網床４に接するか、網床４に近接する底の浅い皿状の孵化容器７を配置し、内部に水を充填している。孵化容器７が底の浅い皿状のものになっているのは、できるだけ水中に酸素を多く含んで、溶存酸素量を多く確保するためである。
【００２１】
網床４上に載置する産卵床６は、園芸用の水苔をよく殺菌消毒したもの、数枚重ねたガーゼ或いはスポンジ状のものを用いる。そして、該産卵床６が乾燥しないよう上述のように網床４の下部が孵化容器７の水面に接するようにして、産卵床６が適度な湿気を有するようにする。
【００２２】
蛍は羽化して成虫蛍Ｄとなるが、１週間〜２週間程度の短期間のうちに交尾・産卵して死滅するため、羽化したての成虫蛍Ｄの雌雄を捕獲して、これを図３に示すように、産卵容器５に入れて産卵床６に産卵させる。産卵された卵は約１ヵ月で孵化し、これにより生まれた蛍の幼虫Ａが網床４の網目を通過して孵化容器７の水中に落下する。孵化容器７に落下した蛍の幼虫ＡにカワニナＢの身を細かく裁断した細切れ身を幼虫Ａの餌として一回与え、その後に該幼虫Ａを図１に示す網容器２に入れることになる。
【００２３】
上述の産卵・孵化容器５，７は、網容器２とは別個に設け、産卵・孵化容器５，７で生まれた幼虫Ａを産卵・孵化容器５，７から取り出し、これを網容器２に移しかえるようにして使用する。このように、孵化容器７内で生まれた幼虫Ａに前述のように一回の餌を与えて若干の抵抗力を付けた上で、網容器２に移しかえるようになっているため、幼虫Ａの網容器２内での生存率を高めることができるが、その移しかえ作業が面倒である。
【００２４】
この面倒さを回避するために、図４に示すように、前記産卵・孵化容器５，７のうち、産卵容器５を前記網容器２の網目上面２ｂに載置し、産卵容器５内の産卵床６に産卵した卵が孵化して生まれた蛍の幼虫Ａが網床４の網目及び網容器２の網目上面２ｂを通過して、直接に網容器２内に落下するようにしてもよく、これによれば、いちいち孵化容器７内の幼虫Ａを網容器２内に移しかえる作業を必要としないから、それだけ育成作業を容易に行うことができる。
【００２５】
図１に示すように、網容器２の内部２ａには開口部２ｃから網容器２の内部２ａに、親貝であるカワニナＢを多数入れることによって、カワニナＢは岩Ｅや網体１１ａに付着し、開口部２ｃからカワニナＢの好むキャベツ等の野菜のくずや米等の餌Ｃを内部２ａに投入することによって、カワニナＢがこれらの餌Ｃによって急速に成長して、その胎生類の特徴として、親貝のカワニナＢより多数の稚貝Ｂが産出され、貝類Ｂが網容器２の内部２ａで大量に繁殖する。
【００２６】
貝類Ｂの繁殖した網容器２の内部２ａに、孵化容器７からの蛍の幼虫Ａを入れることによって、幼虫ＡはカワニナＢやその稚貝を餌として成長することになる。
【００２７】
ここで最も重要なことは、網容器２に生息する蛍の幼虫ＡやカワニナＢが死滅することなく効率的に育成されることである。このためには網容器２内の水の溶存酸素量を１００％近くに常時維持する必要がある。
【００２８】
本発明は、この点で、網容器２の網目容器本体１１は、前述のように、水流１が網目容器本体１１の内部２ａを通過可能であるが、内部２ａに収容される蛍の幼虫Ａやカワニナ等の貝類Ｂが網目を通して外部に逃げない程度の網目、例えば１〜２ｍｍ或いはそれ以下のメッシュの網体によって形成され、この条件を備えた網容器２を、図２に示すように、カワニナＢの生息に適した水流１を有する河川等の水中に設置するようにしたため、網容器２の内部２ａは常時溶存酸素量を１００％近く水が流通するようになっており、幼虫ＡやカワニナＢの効率的な育成を果たすことができ、しかも網容器２の内部２ａの溶存酸素量を維持するための設備を何ら必要としないから、その維持コストは零である。
【００２９】
更にまた、幼虫ＡとカワニナＢとは網容器２の内部２ａという環境のもとで育成するから、自然の河川等の環境のもとで育成するにもかかわらず、飛散したり、外部の天敵の被害を受けることがない。それがために蛍の幼虫Ａを図５に示すように終齢幼虫Ａａ（蛹化する直前の幼虫）に到るまで効率的に育成させることができる。
【００３０】
図５及び図６は、終齢幼虫Ａａを陸上に移動させて蛹化させるための装置を示すもので、桜の開花が終わる４月の末頃に蛍の幼虫が終齢幼虫Ａａとなって、その水中生活から陸上生活に移行することになるが、この移行を円滑に行わせるために、網容器２の開口部２ｃの蓋体１３を開放して、網目容器本体１１の網目上面２ｂに蛹化容器９を載置する。この蛹化容器９の内部には、終齢幼虫Ａａが潜り込むための蛹床である土８が敷設されている。この土８は、湿り過ぎても乾きすぎても不適で、握ってもほぐれない程度の水分を保持していることがよく、そのため土質は乾燥して固くならないものが適しており、蛍が生息していた河川の岸辺の土が最適であるが、黒土、畑土、山土或いはピートモスなどでも代用することができる。
【００３１】
そして、この蛹化容器９内の蛹床である土８と網容器２内の水面１ａとの間に終齢幼虫Ａａが移動することが可能な橋である通路部材１０を連結する。この通路部材１０はガーゼなどによって形成することが好ましい。
【００３２】
終齢幼虫Ａａは、夜間などに網容器２の側面壁を伝って通路部材１０を通って、蛹化容器９の開口部より土８の内部に潜り込むことになるが、この際に土８に潜る作業は容易でないので、この間は吊り紐１２によって網容器２を若干下げて、網容器２上の蛹化容器９を水面すれすれまで位置させて、内部の土８の水分を十分にして土８を柔らかくし終齢幼虫Ａａが土８の中に潜りやすくする。
【００３３】
このようにして土８中に潜った終齢幼虫Ａａは蛹化Ａｂして繭となり、それから１ヵ月ないし１．５ヵ月の間に羽化して成虫蛍となり、空中を乱舞し、夏の風物詩として親しまれることになる。
【００３４】
本発明では、蛹床である土８を内部に敷設した蛹化容器９を網容器２の上面に載置するだけであるから、終齢幼虫Ａａが土８に潜り込み、蛹Ａｂとなり、繭となっている頃に該蛹化容器９を網容器２から分離して、蛍を必要とする場所に運搬して、その場所で蛹化容器９を開放し、土８中の繭を羽化させるようにすれば、あらゆる場所で蛍を乱舞を味わうことができるという大きなメリットがある。
【００３５】
【発明の効果】
請求項１に係る発明によれば、蛍の幼虫およびその餌であるカワニナ等の貝類の生息に適合する河川等の自然の水流中に、該水流が容器内部を通過可能な網容器を配置し、この網容器の内部にカワニナ等の貝類を入れ、且つカワニナ等の類の好む野菜くず等の餌を投入して、貝類の育成を助長して稚貝などの貝類を繁殖させる共に、網容器の内部に蛍の幼虫を入れ、網容器内で繁殖する貝類を餌として蛍の幼虫が網容器の内部で終齢幼虫に到るまで育成するようにしたため、網容器の内部には常時溶存酸素量が１００％近くの水が流通するようになっており、幼虫やカワニナの効率的な育成を果たすことができ、しかも網容器の内部の溶存酸素量を維持するための設備を何ら必要としないから、その維持コストは最小限に留めることができる。
【００３６】
しかも、蛍の幼虫とカワニナ等の貝類とは網容器の内部という規制された環境のもとで育成されるから、自然の河川等の環境のもとで育成するにもかかわらず、飛散したり、外部の天敵の被害を受けることがない。それがために蛍の幼虫を終齢幼虫（蛹化する直前の幼虫）に到るまで効率的に育成させることができる。
【００３７】
更に又、蛍の幼虫の餌であるカワニナ等の貝類は網容器内で育成されて、河川等の自然環境の中で採取しないので自然破壊の原因となることはない。又、網容器の内部で蛍の幼虫を育成するため、該幼虫の生存を確認することができ、必要とする数だけの蛍を供給することができる。
【００３８】
また本発明によれば、雌雄の成虫蛍から容易に且つ確実に蛍の幼虫を、該幼虫を育成するための育成装置（網容器）に供給することができる。
【００３９】
請求項２に係る発明によれば、雌雄の成虫蛍から容易に且つ確実に、しかも作業能率よく、蛍の幼虫を育成するための育成装置（網容器）に供給することができる。
【００４０】
請求項３に係る発明によれば、前記網容器に設けた開口部付近上面に、土を内部に敷設した蛹化容器を載置し、該容器内の土と前記網容器内の水面とを連通する通路部材を設け、網容器内の終齢幼虫が通路部材を通って蛹化容器内の土内に潜り込み、蛹化するようにしたため、網容器内の終齢幼虫を確実に蛹化させることができ、しかも蛹床である土を内部に敷設した蛹化容器を網容器の上面に載置するだけであるから、終齢幼虫が土に潜り込み、蛹となり、繭となっている頃に該蛹化容器を網容器から分離して、蛍を必要とする場所に運搬して、その場所で蛹化容器を開放し、土中の繭を羽化させるようにすれば、あらゆる場所で蛍の乱舞を味わうことができるという大きなメリットがある。
【００４１】
請求項４に係る発明によれば、内部に収容したカワニナ、その稚貝等の貝類、及び蛍の幼虫が外部に逃げることができないが、内部を水流が通過可能な網目を有する網目容器本体と、該容器本体の内部に上記貝類や蛍の幼虫及びこれらの餌を投入可能で、閉鎖可能な開口部と、からなる網容器と、該容器本体の網目上面に載置され、成虫蛍が逃げないように閉鎖した産卵容器本体と該本体の底部に設けた網床と網床に載置した水苔等の産卵床とからなる産卵容器と、を育成装置として用いるため、カワニナの生息に適した水流を有する河川等の水中に網容器を設置することによって、網容器の内部には常時溶存酸素量が１００％近くの水が流通するようになっており、幼虫やカワニナの効率的な育成を果たすことができ、しかも網容器の内部の溶存酸素量を維持するための設備を何ら必要としないから、その維持コストを最小限に維持することができる。
【００４２】
更にまた、幼虫とカワニナとは網容器の内部という規制された環境のもとで育成するから、自然の河川等の環境のもとで育成するにもかかわらず、飛散したり、外部の天敵の被害を受けることがない。それがために蛍の幼虫を終齢幼虫（蛹化する直前の幼虫）に到るまで網容器の内部で効率的に育成させることができる。
【００４３】
請求項５に係る発明によれば、請求項３に掲げる作用効果を発揮することができるにも係わらず、その構成が簡単で安価に蛍の育成装置を製作することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態の使用状態を示す縦断正面図である。
【図２】同使用状態を示す斜視図である。
【図３】同他の要部を示す縦断正面図である。
【図４】同他の実施形態の要部を示す縦断正面図である。
【図５】同他の要部を示す縦断正面図である。
【図６】同斜視図である。
【符号の説明】
Ａ蛍の幼虫
Ｂカワニナ等の貝類
１水流
１ａ水面
２網容器
２ａ網容器の内部
２ｂ網容器の網目上面
２ｃ網容器の開口部
Ｃ野菜くず等の餌
Ａａ終齢幼虫
Ｄ成虫蛍
３産卵容器本体
４網床
５産卵容器
６産卵床
７孵化容器
８蛹床である土
９蛹化容器
１０通路部材
１１網目容器本体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for growing fireflies from egg laying and hatching to hatching, which were developed to artificially grow fireflies such as fireflies and fireflies.
[0002]
[Prior art and issues]
As is well known, the life cycle of fireflies is that in the summer, larvae that hatched eggs laid on the waterside, which is a moist environment, fall into the water. It repeats molting with bait, becomes an infancy larva in spring, moves to land, hatches in the soil, hatches from a pupa in summer, becomes an adult, mates, lays eggs, finishes its life, One generation life cycle is now complete.
[0003]
Recently, the environment suitable for the growth of fireflies has been lost due to the deterioration of the waterside environment, and in view of this situation, artificial breeding and release of fireflies have been actively carried out, but the artificial fireflies are still being efficiently produced. Few cases have been successfully trained.
[0004]
As a general method of artificially raising fireflies, put the firefly's larvae into a shallow hatching container (pad), break the shell of the kawainina in this water, and finely divide the shell. Sliced shredded slices and juvenile tiny shellfish were introduced to feed larvae, but in this method, the shredded pieces decayed and the water in the hatching vessel rotted. It is necessary to perform a work that requires time and perseverance to suck up and transfer the firefly larvae that live in the water with a spoid.
[0005]
The river moths that serve as food will be collected from the natural rivers in the field, but if they are collected in large quantities at once, it will be difficult to maintain afterwards. , Which has a negative effect on fireflies that live in nature, leading to the destruction of nature.
[0006]
Furthermore, it was necessary to maintain the oxygen concentration (dissolved oxygen amount) near 100% in the water of the hatching container and the breeding container, and to maintain the water temperature at around 26 degrees. For this purpose, it is necessary to attach air conditioning equipment to hatching containers and breeding containers to maintain a constant temperature, and attach an air compressor to aerate the water by operating for 24 hours to maintain the dissolved oxygen amount. The maintenance cost was extremely high.
[0007]
An object of the present invention is to solve these problems all at once and to propose an efficient method and apparatus for growing fireflies.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 is provided with reference numerals of the embodiment, and as shown in FIG. 1, the firefly larva A and the shellfish B such as kawaina as its bait are shown. A net container 2 through which the water stream 1 can pass through the container interior 2a is placed in a natural water stream 1 such as a river suitable for habitat, and a shellfish B such as a river crab is placed in the interior 2a of the mesh container 2; Feeding food C such as vegetable scraps preferred by shellfish, etc., to promote the growth of shellfish B and breeding to shellfish such as juvenile shellfish , while mainly adult male and female firefly as shown in FIG. D is placed, and a spawning bed 6 such as moss is placed on the net floor 4 of the spawning container 5 composed of the spawning container main body 3 closed so that the adult firefly D does not escape, and the net floor 4 provided at the bottom thereof. At the bottom of the mesh floor 4, the water surface is in contact with the mesh floor or the hatching container 7 is arranged close to the mesh floor, and the mating of male and female adult firefly D Firefly larva A born by hatching eggs laid on the spawning bed 6 passes through the mesh of the mesh floor 4 and falls into the water of the hatching container 7. The firefly larva A is placed in the inner part 2a of No. 2 and is grown until the larva A of the firefly reaches the end-of-life larva Aa (FIG. 5) in the inner part 2a of the net container 2 using the shellfish B breeding in the net container 2. It relates to the training method.
[0010]
In addition, as shown in FIG. 1, the invention according to claim 2 includes a water stream 1 in a natural water stream 1 such as a river that matches the habitat of a firefly larva A and a shellfish B such as kawaina, which is a bait thereof. A net container 2 that can pass through the inside 2a is disposed, and shellfish B such as kawainina is placed in the inside 2a of the net container 2, and food C such as vegetable scraps preferred by the shellfish such as kawainina is introduced. The breeding is promoted to breed shellfish such as juvenile shellfish. On the other hand, as shown in FIG. 4, the egg-laying container 5 is placed on the mesh upper surface 2b of the mesh container 2, and the egg-laying bed 6 in the egg-laying container 5 is placed. The firefly larva A born by hatching the eggs laid on the net passes through the mesh of the mesh floor 4 and the mesh upper surface 2b of the mesh container 2, and falls directly into the inside 2a of the mesh container 2, so that the mesh container 2 Firefly larva A reaches end-of-life larva Aa (FIG. 5) in the inside 2a of the net container 2 using the shellfish B breeding inside In accordance with the method for growing a firefly which is adapted to cultivate.
[0011]
In addition, as shown in FIG. 1, the invention according to claim 3 includes a water stream 1 in a natural water stream 1 such as a river that fits the habitat of a firefly larva A and a shellfish B such as kawaina. A net container 2 that can pass through the inside 2a is disposed, and shellfish B such as kawainina is placed in the inside 2a of the net container 2, and food C such as vegetable scraps preferred by the shellfish such as kawainina is introduced. The rearing is promoted to breed shellfish such as juvenile shellfish, and firefly larva A is placed inside the net container 2 , and the firefly larva A is fed into the net container 2 by feeding the shellfish B propagating in the net container 2. It grows up to the end-of-life larva Aa (FIG. 5) in the interior 2a, and as shown in FIGS. 5 and 6, soil 8 is laid inside the upper surface in the vicinity of the opening 2c provided in the mesh container 2. The hatching container 9 is placed, and the passage member 1 communicates the soil 8 in the container and the water surface 1a in the net container 2. The present invention relates to a method for growing fireflies in which 0 is provided so that the last-instar larvae Aa in the net container 2 pass through the passage member 10 and enter the soil 8 in the hatching container 9 to hatch.
[0012]
In addition, as shown in FIG. 1, the invention according to claim 4 does not allow the riverina accommodated in the inside 2a, the shellfish B such as the larvae, and the firefly larva A to escape to the outside, but the water flow in the inside 2a. A mesh container body 2 having a mesh container body 11 having a mesh that can pass, and an opening 2c that can be put into the container body 11 and can contain the shellfish B, the firefly larva A, and their bait C, and can be closed. 4, the egg-laying container body 3 placed on the mesh upper surface 2 b of the container body 11 and closed so that the adult firefly D does not escape, and the mesh floor 4 provided on the bottom of the body 3 and the mesh The present invention relates to a firefly growing apparatus including a spawning container 5 including a spawning bed 6 such as moss mounted on a floor .
[0014]
Further, in the invention according to claim 5 , as shown in FIG. 1, the riverina accommodated in the interior 2a, the shellfish B such as the larvae, and the firefly larva A cannot escape to the outside, but the water current flows through the interior 2a. A mesh container body 2 having a mesh container body 11 having a mesh that can pass, and an opening 2c that can be put into the container body 11 and can contain the shellfish B, the firefly larva A, and their bait C, and can be closed. As shown in FIGS. 5 and 6, a hatching container 7 in which soil 8 is laid is placed on the upper surface in the vicinity of the opening 2c provided in the mesh container 2, and the soil 8 in the container is placed. And a firefly growing apparatus provided with a passage member 10 communicating with the water surface 1a in the net container 2.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram showing a use state of an embodiment of the present invention, and shows a state in which a net container 2 is placed underwater by being suspended by a hanging string 12 in a river or the like equipped with a natural water flow 1. FIG. 2 shows a state in which the net container 2 is arranged in a water flow 1 such as a river. The size and shape of the net container 2 are not particularly limited. For example, the net container 2 is a rectangular parallelepiped having a width of 50 cm and a height and a depth of 30 cm, but may be a long cylinder having a diameter of 30 cm.
[0016]
As shown in FIG. 1, the net container 2 has at least a side surface periphery 11a formed from a net body, and an upper surface 2b formed from a net body, and a bottom surface 11b formed from a synthetic resin or metal plate. The mesh container body 11 and an opening 2c that can be filled with the shellfish B, the firefly larva A, and their bait C and can be closed into the interior 2a of the container body 11. In order to make the opening 2c closable, as shown in the figure, a lid body 13 having one end portion as a pivot portion 13a is pivotally attached to the opening portion 2c by a fastener such as a fastener, a locking cloth or a fastener. ing.
[0017]
A large number of shellfish B such as river crab and firefly larva A are placed in the inside 2a of the net container 2 through the opening 2c as shown in the figure, and the food C preferred by the shellfish B such as vegetable scraps and river crab B such as rice is introduced. In addition, rocks, pebbles and sand E are appropriately arranged at the bottom.
[0018]
Further, as shown in FIG. 2, the net container 2 is installed in water such as a river, and is appropriately hung on a hanging string 12. By operating the hanging string 12, the net container 2 has a firefly in its inside 2a. As the larva A grows, it can move up and down with respect to the water surface 1 a, and the water flow 1 can pass through the inside 2 a of the net container 2. However, the net container 2 may be moored at the bottom of a river or the like by an appropriate fixing means such as putting a large rock in the inside 2a.
[0019]
The mesh container body 11 of the mesh container 2 allows the water flow 1 to pass through the inside 2a of the mesh container body 11. However, the shellfish B such as firefly larva A and kawaina contained in the interior 2a does not escape to the outside through the mesh. The side perimeter 11a and the upper surface 2b of the main body 11 are formed by a mesh of a certain degree, for example, a mesh of 1 to 2 mm or less, and the bottom surface 11b may also be formed by a mesh. Furthermore, these nets may be formed of a net made of a synthetic resin such as a well-known saran net, but preferably formed of a metal net so that crayfish that inhabit rivers etc. do not break the net and enter the interior 2a. . Alternatively, a double mesh body may be used, the inside may be a synthetic resin net with a small mesh, and the outside may be a relatively large and strong metal net with a mesh.
[0020]
FIG. 3 shows egg laying and hatching containers 5 and 7 for laying and hatching the firefly larva A. The egg-laying container 5 contains a male and female adult firefly D, and the egg-laying container body 3 closed so that the adult firefly D does not escape, a net floor 4 provided at the bottom, and an egg-laying placed on the upper surface of the net floor 4 And floor 6. The upper surface 3a and the side surface 3b of the egg-laying container body 3 may be formed of a net as shown in the figure, but may be formed of a transparent synthetic resin body. In addition, you may make it provide the open part 3c in the upper surface 3a, and to attach the cover body 3d to this so that opening and closing is possible. Then, the water surface is in contact with the bottom of the net floor 4 which is the bottom surface of the egg-laying container body 3 or a shallow dish-like hatching container 7 in the vicinity of the net floor 4 is disposed, and the interior is filled with water. Yes. The reason why the hatching container 7 is in the shape of a dish having a shallow bottom is to contain as much oxygen as possible in water and to secure a large amount of dissolved oxygen.
[0021]
As the egg-laying bed 6 placed on the mesh floor 4, horticultural moss is well sterilized and sterilized, and several layers of gauze or sponge are used. Then, as described above, the spawning bed 6 has appropriate moisture so that the lower part of the net floor 4 is in contact with the water surface of the hatching container 7 so that the spawning bed 6 is not dried.
[0022]
Fireflies emerge and become adult fireflies D, but in order to die by mating and laying eggs within a short period of about 1 to 2 weeks, capture the sexes of adult fireflies D that have just emerged and capture them. As shown in FIG. 3, the eggs are put in a spawning container 5 and spawned on a spawning bed 6. The eggs laid are hatched in about one month, and the firefly larva A thus born passes through the mesh of the mesh floor 4 and falls into the water of the hatching container 7. The firefly larva A that has fallen into the hatching container 7 is given as a bait for the larva A, and then the larva A is placed in the net container 2 shown in FIG.
[0023]
The spawning / incubation containers 5 and 7 are provided separately from the net container 2, and the larva A born in the spawning / incubation containers 5 and 7 is taken out from the spawning / incubation containers 5 and 7 and transferred to the net container 2. Use it as you change it. As described above, the larva A born in the hatching container 7 is fed once as described above to give a slight resistance, and then transferred to the net container 2, so that the larva A The survival rate in the net container 2 can be increased, but the transfer operation is troublesome.
[0024]
In order to avoid this trouble, as shown in FIG. 4, among the egg-laying / incubating containers 5, 7, the egg-laying container 5 is placed on the mesh upper surface 2 b of the mesh container 2, and egg-laying in the egg-laying container 5 The firefly larva A born by hatching the egg laid on the floor 6 may pass through the mesh of the mesh floor 4 and the mesh upper surface 2b of the mesh container 2 and directly fall into the mesh container 2. According to this, since the operation | work which moves the larva A in the hatching container 7 to the net container 2 one by one is not required, the raising operation | work can be performed so much.
[0025]
As shown in FIG. 1, by inserting a large number of kawainina B, which is a parent shellfish, into the inside 2a of the net container 2 from the opening 2c into the inside 2a of the net container 2, the kainina B adheres to the rock E and the net body 11a. In addition, by introducing waste C such as cabbage preferred by Kawanina B and food C such as rice from the opening 2c into the interior 2a, Kawanina B rapidly grows with these foods C, and the characteristics of the embryos As a result, a large number of juvenile shells B are produced from the parent shell kawainina B, and shellfish B propagate in large quantities in the inside 2a of the net container 2.
[0026]
By placing the firefly larva A from the hatching container 7 into the inside 2a of the net container 2 on which the shellfish B has propagated, the larva A will grow using Kawaina B or its juvenile as food.
[0027]
Here, the most important thing is that the firefly larva A and the river moth B inhabiting the net container 2 are efficiently grown without being killed. For this purpose, it is necessary to constantly maintain the dissolved oxygen content of the water in the net container 2 at nearly 100%.
[0028]
In the present invention, the mesh container body 11 of the mesh container 2 in this respect allows the water stream 1 to pass through the interior 2a of the mesh container body 11 as described above, but the firefly larva A contained in the interior 2a. As shown in FIG. 2, the net container 2 is formed by a mesh that does not allow shellfish B such as sea bream and river bream to escape to the outside through the mesh, for example, a mesh body having a mesh of 1 to 2 mm or less. Since it was installed in water such as a river having a water flow 1 suitable for the habitat of Kawanina B, the inside 2a of the net container 2 always has a flow of nearly 100% of dissolved oxygen, and the larva A and Since the riverina B can be efficiently cultivated and no equipment for maintaining the dissolved oxygen content in the inside 2a of the net container 2 is required, the maintenance cost is zero.
[0029]
Furthermore, since the larva A and kawainina B are grown in the environment 2a inside the net container 2, they are scattered or external enemies in spite of growing in the environment of natural rivers. No damage. Therefore, the firefly larva A can be efficiently cultivated until it reaches the last-instar larva Aa (larvae just before hatching) as shown in FIG.
[0030]
5 and 6 show an apparatus for moving and hatching the instar larvae Aa on land. At the end of April when the cherry blossoms end, the firefly larvae become the instar larvae Aa. From the underwater life to the land life, in order to make this transition smoothly, the lid 13 of the opening 2c of the mesh container 2 is opened and the mesh upper surface 2b of the mesh container body 11 is covered with The chemical container 9 is placed. Inside the hatching container 9, soil 8 is laid as a bed for the last-instar larvae Aa to enter. This soil 8 is unsuitable if it is too wet or too dry, and should retain enough moisture so that it will not be loosened even if it is gripped. The soil on the shore of the river is the best, but black soil, field soil, mountain soil or peat moss can be substituted.
[0031]
Then, a passage member 10, which is a bridge through which the last-instar larva Aa can move, is connected between the soil 8, which is a bed in the hatching container 9, and the water surface 1 a in the net container 2. The passage member 10 is preferably formed of gauze or the like.
[0032]
The last-instar larva Aa passes through the side wall of the net container 2 at night and passes through the passage member 10 and enters the inside of the soil 8 from the opening of the hatching container 9. Since the operation of diving is not easy, the net container 2 is slightly lowered by the hanging strap 12 during this time, and the hatching container 9 on the net container 2 is positioned until the surface of the water passes, so that the moisture of the internal soil 8 is sufficient and the soil 8 Soften the larva Aa so that it can easily dive into the soil 8.
[0033]
In this way, the instar larva Aa that dives in the soil 8 hatches and becomes a pupa, and then emerges in 1 to 1.5 months to become an adult firefly, dancing in the air, as a summer feature It will be popular.
[0034]
In the present invention, the hatching container 9 in which the soil 8 that is the cocoon bed is laid is simply placed on the upper surface of the net container 2, so that the instar larva Aa sinks into the soil 8 and becomes the cocoon Ab, At that time, the hatching container 9 is separated from the net container 2 and transported to the place where the fireflies are needed, and the hatching container 9 is opened at that place so that the hatching in the soil 8 will emerge. If there is, there is a big merit that you can enjoy fireflies dancing everywhere.
[0035]
【The invention's effect】
According to the first aspect of the present invention, a net container in which the water stream can pass through the inside of the container is disposed in a natural water stream such as a river that matches the habitat of fireflies larvae and shellfish such as kawachina. Inside this net container, shellfish such as kawainina are put in, and food waste such as vegetable waste such as kawainina is introduced to promote the growth of shellfish and breed shellfish such as larvae. The firefly larvae are placed inside the net container, and the larvae of the firefly are grown until they reach the end-of-life larvae inside the net container using the shellfish that breed in the net container. Nearly 100% water is circulated so that larvae and kawainina can be efficiently cultivated, and no equipment is required to maintain the dissolved oxygen content inside the net container. And its maintenance costs can be kept to a minimum
[0036]
Moreover, since firefly larvae and shellfish such as kawainina are grown in a regulated environment inside a net container, they are scattered in spite of growing in a natural river environment. No damage from outside natural enemies. Therefore, firefly larvae can be efficiently raised until reaching the last-instar larvae (larvae just before hatching).
[0037]
Furthermore, shellfish such as kawainina, which is a food for firefly larvae, are grown in a net container and are not collected in a natural environment such as a river, so that they do not cause natural destruction. Moreover, since the firefly larvae are grown inside the net container, the survival of the larvae can be confirmed, and the necessary number of fireflies can be supplied.
[0038]
Further , according to the present invention , firefly larvae can be easily and reliably supplied from male and female adult fireflies to a growth apparatus (net container) for growing the larvae.
[0039]
According to the second aspect of the present invention, it is possible to easily and surely supply male and female adult fireflies to a growth apparatus (net container) for growing firefly larvae with good work efficiency.
[0040]
According to the invention of claim 3 , the hatching container laid with soil is placed on the upper surface near the opening provided in the mesh container, and the soil in the container and the water surface in the mesh container are placed. A communicating passage member is provided, and the infancy larvae in the net container pass through the passage member and enter the soil in the hatching container to hatch. It can only be placed on the top of the net container and the hatching container laying the soil that is the cocoon floor inside, so when the infancy larvae dive into the soil, become cocoons, and become cocoons If the hatching container is separated from the net container and transported to the place where the fireflies are needed, the hatching container is opened at that place, and the soot in the soil emerges. There is a big merit that you can taste the ransom.
[0041]
According to the invention according to claim 4 , the shellfish, the shellfish such as the larvae contained therein, and the firefly larvae cannot escape to the outside, but the mesh container main body having a mesh through which the water flow can pass. The shell body, the firefly larvae, and their baits can be put into the container body, and is placed on the mesh upper surface of the container body, and the mesh body of the container body, and the adult firefly escapes. It is suitable for the habitat of river bream because it uses a spawning container body that is closed so that there is no spawning container and a spawning container that consists of a net floor provided at the bottom of the main body and a spawning floor such as moss mounted on the net floor. By installing a net container in water such as a river with a fresh water flow, water with a dissolved oxygen content of almost 100% is constantly flowing inside the net container, and efficient growth of larvae and kawainina Inside the mesh container Do not require any equipment for maintaining the amount of dissolved oxygen, it is possible to maintain the maintenance costs to a minimum.
[0042]
Furthermore, since larvae and kawainina are grown in a regulated environment such as inside a net container, they are scattered, and even if they are grown in an environment such as a natural river, There is no damage. Therefore, firefly larvae can be efficiently grown inside the net container until reaching the last-instar larvae (the larvae just before hatching).
[0043]
According to the fifth aspect of the present invention, the firefly growing apparatus can be manufactured at a low cost with a simple structure, although the operational effects of the third aspect can be exhibited.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional front view showing a use state of an embodiment of the present invention.
FIG. 2 is a perspective view showing the same use state.
FIG. 3 is a longitudinal front view showing the other main part.
FIG. 4 is a longitudinal front view showing a main part of the other embodiment.
FIG. 5 is a longitudinal front view showing the other main part.
FIG. 6 is a perspective view of the same.
[Explanation of symbols]
A Firefly larva B Shellfish such as Kawaina 1 Water flow 1a Water surface 2 Net container 2a Inside of the net container 2b Net top of the net container 2c Opening of the net container C Food bait such as vegetable waste Aa Final larva D Adult firefly 3 Spawning container body 4 Netbed 5 Spawning Container 6 Spawning Bed 7 Hatching Container 8 Soil 9 as Hatching Floor Hatching Container 10 Passage Member 11 Mesh Container Body

Claims

In a natural water stream such as a river that matches the habitat of fireflies larvae and shellfish such as Kawanina, a net container that allows the water stream to pass through the inside of the container is placed. Put shellfish and feed foods like vegetables such as kawaina, encourage the growth of shellfish and breed shellfish such as juveniles , while adult male and female fireflies enter , adult fireflies escape A spawning bed such as moss is placed on the net floor of the spawning container consisting of the spawning container body closed so as not to have a net floor at the bottom, and the water surface is in contact with the net floor at the bottom of the net floor or the net Place a hatching container close to the floor so that the larvae of fireflies born from the eggs laid on the spawning bed by mating male and female adult fireflies pass through the mesh of the mesh floor and fall into the water of the hatching container. placed larvae fireflies dropped into this hatch container inside the net containers, shellfish breeding in the network container Method for growing fireflies that as firefly larvae to grow up to the last instar larvae inside the net container as bait.

In a natural water stream such as a river that matches the habitat of fireflies larvae and shellfish such as Kawanina, a net container that allows the water stream to pass through the inside of the container is placed. Put shellfish and feed foods like vegetables such as kawaina, encourage the growth of shellfish and breed shellfish such as juveniles, while adult male and female fireflies enter, adult fireflies escape A spawning vessel that is created by placing a spawning container consisting of a spawning container body closed in a closed manner and a mesh floor provided at the bottom of the spawning container on the mesh top surface of the mesh container, and the eggs spawned on the spawning bed in the spawning container are hatched Larvae pass through the mesh of the mesh floor and the mesh mesh upper surface and fall directly into the mesh container, and the firefly larvae are terminated inside the mesh container by feeding on shellfish breeding in the mesh container. A method for growing fireflies that grows up to the age of the larvae .

In a natural water stream such as a river that matches the habitat of fireflies larvae and shellfish such as Kawanina, a net container that allows the water stream to pass through the inside of the container is placed. Put shellfish and feed foods such as vegetable wastes such as kawakina to encourage the growth of shellfish and breed shellfish such as juvenile shellfish, and put firefly larvae inside the net container. Incubation with fireflies larvae that grow in the container until they reach the end-of-life larvae inside the mesh container, and the soil is laid on the top surface near the opening in the mesh container Place a container, provide a passage member that communicates the soil in the container and the water surface in the net container, the instar larvae in the net container enters the soil in the hatching container through the passage member, How to grow fireflies that hatch.

Kawanina accommodated inside, shellfish such as larvae, and firefly larvae cannot escape to the outside, but a mesh container main body having a mesh through which water flow can pass inside, and the shellfish and A net container composed of a firefly larvae and an opening that can be filled with these baits, and a spawning container body placed on the mesh upper surface of the container body and closed so that adult fireflies do not escape, and the mesh container An apparatus for growing fireflies, comprising: a net floor provided at the bottom of the main body; and a spawning container comprising a spawning bed such as moss placed on the net floor .

Kawanina accommodated inside, shellfish such as larvae, and firefly larvae cannot escape to the outside, but a mesh container main body having a mesh through which water flow can pass inside, and the shellfish and A net container composed of a firefly larvae and a bait which can be filled and closed, and a hatching container with a soil laid on the upper surface in the vicinity of the opening provided in the net container. An apparatus for growing fireflies, provided with a passage member that communicates the soil in the container and the water surface in the net container .