Functional Morphology of Mouthparts and Foregut of the Last Zoea,Glaucothoe and First Juvenile of the King Crabs Paralithodes camtschaticus,P.brevipes and P.platypus
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- Abrunhosa Fernando A.
- Research Institute for Marine Biological Science, Research Institute for Science and Technology, The Science University of Tokyo
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- Kittaka Jiro
- Research Institute for Marine Biological Science, Research Institute for Science and Technology, The Science University of Tokyo
書誌事項
- タイトル別名
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- Functional Morphology of Mouthparts and Foregut of the Last Zoea, Glaucothoe and First Juvenile of the King Crabs <i>Paralithodes camtschaticus, P. brevipes</i> and <i>P, platypus</i>
- Functional Morphology of Mouthparts and
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抄録
The feeding apparatus of the Paralithodes camtschaticus, P. brevipes and P. platypus during the transition zoea, glaucothoe and first juvenile stages were analyzed. The mandibles of zoeal larvae are well adapted for grinding of food. The mandibles of the glaucothoe are uncalcified and rudimentary, and the mandibular lateral lobes are apparently incapable of giving support to the masticatory movement. The setae of endopods and endites of the maxillae and endopods of the first and second maxillipeds are substituted for minute setae or denticles. The third maxilliped appear to be apparently developed, but the crista dentata on the ischium is still not formed. The first juvenile has well calcified mandible. The crista dentata on the third maxilliped is completely formed.<br> The setose zoeal foregut has two chambers distinctively separated by a heavily setose cardiopyloric valve. The pyloric stomach has a well developed filter press. The glaucothoe hasthe foregut chambers and the cardiac pyloric valve unarmed or with few small setae present. The gastric mill and lateral teeth appear for the first time in the juvenile foregut. These observations indicate changing in the feeding of lithodids, in which they abstain from feeding during the glaucothoe stage.
収録刊行物
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- Fisheries science
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Fisheries science 63 (6), 923-930, 1997
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390001204428957184
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- NII論文ID
- 130003903137
- 10004872260
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- NII書誌ID
- AA10993718
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- NDL書誌ID
- 4371619
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- ISSN
- 09199268
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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