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- 小川 和夫
- Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo
書誌事項
- タイトル別名
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- Egg hatching of the monogenean Heterobothrium okamotoi, a gill parasite of cultured tiger puffer (Takifugu rubripes), with a description of its oncomiracidium.
- Egg hatching of the monogenean Heterobo
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説明
Eggs of the monogenean Heterobothrium okamotoi were collected immediately after deposited in Petri dishes, and incubated at 15°C, 20°C and 25°C . The average time required for egg hatching was 11.8 days at 15°C, 7.0 days at 20°C and 5.3 days at 25°C. Effects of different salinities (0, 6.7, 13.4, 20.0, 26.7 and 33.4 ppt) on hatching was examined. Hatching was not affected at the salinities of 6.7-33.4 ppt, but oncomiracidia hatched at 6.7 ppt were apparently inactive, probably because of the low salinity. No embryonic development was observed in the eggs in distilled water, and the embryos eventually died. The morphology of oncomiracidium was described. The oncomiracidium of H. okamotoi and those of previously described Diclidophora species, both in the family Diclidophoridae, had many morphological features in common. The H. okamotoi oncomiracidium could survive much longer than other monogenean larvae, with an average life span of 9.1 days, 7.3 days and 4.7 days at 15°C, 20°C and 25°C, respectively, suggesting that it can retain its infectivity much longer than other monogeneans.
収録刊行物
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- 魚病研究
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魚病研究 33 (1), 25-30, 1998
日本魚病学会
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詳細情報 詳細情報について
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- CRID
- 1390282681439101696
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- NII論文ID
- 10019210779
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- NII書誌ID
- AN00063165
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- ISSN
- 18817335
- 0388788X
- http://id.crossref.org/issn/0388788X
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- NDL書誌ID
- 4425464
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
