An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes.
The paper reports the finding of a particular type of Daphnia (Ctenodaphnia, Dybowski & Grochowski 1895) head shields, found in the plankton and in the sediments of two lakes in the Khumbu Region (Nepalese Himalayas). The capsules, all of the smallest size, were characterised by the presence...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
1999-02-01
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| Series: | Journal of Limnology |
| Subjects: | |
| Online Access: | http://www.jlimnol.it/index.php/jlimnol/article/view/458 |
| _version_ | 1828962461274865664 |
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| author | Patrizia COMOLI Fiorenza G. MARGARITORA Marina MANCA |
| author_facet | Patrizia COMOLI Fiorenza G. MARGARITORA Marina MANCA |
| author_sort | Patrizia COMOLI |
| collection | DOAJ |
| description | The paper reports the finding of a particular type of Daphnia (Ctenodaphnia, Dybowski & Grochowski 1895) head shields, found in the plankton and in the sediments of two lakes in the Khumbu Region (Nepalese Himalayas). The capsules, all of the smallest size, were characterised by the presence of a hole in the medio-dorsal region, behind the posterior median groove. The location of the hole suggests a link with the nuchal organ, which we found in the neonates of the species. The finding is important for taxonomy and provides information for discussing the current hypothesis on the biogeography of the Ctenodaphnia subgenus. Being well preserved in sediment cores, the capsules are useful tools for reconstructing past phases of active reproduction which occurred also in the past. |
| first_indexed | 2024-12-14T10:05:26Z |
| format | Article |
| id | doaj.art-5bf167cf294d40a5b0d8caf5352f9f8a |
| institution | Directory Open Access Journal |
| issn | 1129-5767 1723-8633 |
| language | English |
| last_indexed | 2024-12-14T10:05:26Z |
| publishDate | 1999-02-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | Journal of Limnology |
| spelling | doaj.art-5bf167cf294d40a5b0d8caf5352f9f8a2022-12-21T23:07:09ZengPAGEPress PublicationsJournal of Limnology1129-57671723-86331999-02-01581293210.4081/jlimnol.1999.29An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes.Patrizia COMOLIFiorenza G. MARGARITORAMarina MANCAThe paper reports the finding of a particular type of Daphnia (Ctenodaphnia, Dybowski & Grochowski 1895) head shields, found in the plankton and in the sediments of two lakes in the Khumbu Region (Nepalese Himalayas). The capsules, all of the smallest size, were characterised by the presence of a hole in the medio-dorsal region, behind the posterior median groove. The location of the hole suggests a link with the nuchal organ, which we found in the neonates of the species. The finding is important for taxonomy and provides information for discussing the current hypothesis on the biogeography of the Ctenodaphnia subgenus. Being well preserved in sediment cores, the capsules are useful tools for reconstructing past phases of active reproduction which occurred also in the past.http://www.jlimnol.it/index.php/jlimnol/article/view/458Daphnia, head-shields, Himalayan lakes, morphology |
| spellingShingle | Patrizia COMOLI Fiorenza G. MARGARITORA Marina MANCA An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes. Journal of Limnology Daphnia, head-shields, Himalayan lakes, morphology |
| title | An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes. |
| title_full | An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes. |
| title_fullStr | An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes. |
| title_full_unstemmed | An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes. |
| title_short | An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes. |
| title_sort | unusual type of daphnia head shields from plankton and sediments of himalayan lakes |
| topic | Daphnia, head-shields, Himalayan lakes, morphology |
| url | http://www.jlimnol.it/index.php/jlimnol/article/view/458 |
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