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海産貝類に寄生する幼条虫について
https://fra.repo.nii.ac.jp/records/2003363
https://fra.repo.nii.ac.jp/records/2003363a35785af-b816-42f4-b654-3af625ab6bfd
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-04-25 | |||||
| タイトル | ||||||
| タイトル | 海産貝類に寄生する幼条虫について | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | A Larval Tapeworm, Tylocephalum, in Marine Molluscan Shellfishes | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
阪口, 清次
× 阪口, 清次 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The distribution in Japan, its morphology and preliminary experimental infection to final host were studied on the larval tapeworm in marine molluscan shellfishes. 1. This parasite has never been reported previously from marine molluscan shellfishes in Japan. It was found that many kinds of bivalve and gastropoda collected in several places of Japanese coast were parasitized by encysted larval tapeworms through the investigations from 1969 to 1972. In recent years, parasitism of tapeworms has been in progress conspicuously in warm water regions such as Tanabe bay. 2. The specimens of the parasite collected from many shellfishes were observed morphologically and compared with several species of larval tapeworm reported by other authors. Morphological observations proved that the parasite belongs to genus Tylocephalum. 3. It was cleared that the natural pearl oysters were infected with the parasite at a higher rate than the cultured ones and numbers of the parasite per host shell in the former were also greater than those in the latter, 4. Several kinds of fishes and sharks as known to be the feeders of natural molluscan hosts of the worm were artificially infected with the encysted larvae in pearl oyster. The juvenile flukes were found from shark, Heterodontus japonicus, in experiment. They emerged from the cysts in stomach of host within 24 hours, then, migrated to valvular intestine within 7 days after administration. They everted the globular scolex and were remarkably active in motion, but the formation of segments and genital organs were not yet observable. On the other hand, in other fishes and sharks used at experiment, inactive flukes were found in stomach within 24 hours after administration and they were digested and discharged from the anus within 2 days. Thus, it can be said that the shark, Heterodontus japonicus, may be a spieces of final hosts of this larval tapeworm. | |||||
| 言語 | en | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | 海産貝類に寄生する条虫の幼生について,本邦産の貝類における寄生状態,虫体の形態ならびに予備的な感染実験を実施した。1. 本種は本邦においては未報告のものであるが,調査の結果,本邦産の多くの二枚貝および巻貝に見出された。なお,暖海性の海域では急激に繁殖した傾向がみられる。2. 多くの貝類から得られた本虫の形態を観察した結果,Tylocephalum に属する条虫の幼生であることが明らかになった。3. アコヤガイでは天然貝において養殖貝よりも寄生率および寄生数が多くみられた。4. 天然棲息の貝類を捕食する魚類および板鯉類について人工感染実験を実施した結果,ネコザメから目的の幼体が得られた。被囊幼生は24時間以内に宿主の胃で被囊から脱出し,7日以内に螺旋腸へ移行する。虫体は頭節を反転し,活発に運動するが,体節や生殖器官の発達はまだ全く観察されなかった。一方,ネコザメ以外で実験した魚類や板類では,24時間以内では本虫は見出されるが活力は弱々しく,その後は生存し得ないことから考えると,7日後においても活発に運動する虫体が得られたネコザメは本虫の最終·宿主のー種になり得る可能性をもつと考えられた。 | |||||
| 言語 | ja | |||||
| bibliographic_information |
ja : 南西海区水産研究所研究報告 en : Bulletin of the Nansei Regional Fisheries Research Laboratory 巻 6, p. 1-8, ページ数 8, 発行日 1973-09 |
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| 出版者 | ||||||
| 出版者 | 南西海区水産研究所 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Nansei Regional Fisheries Research Laboratory | |||||
| 言語 | en | |||||
| item_10002_source_id_9 | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0388-841X | |||||
| item_10002_source_id_11 | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00181988 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | nnf_k_6_1 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010102413 | |||||
| 言語 | ja | |||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||
