| GÓMEZ Fernando. 2013. Morphology and distribution of Pronoctiluca (Dinoflagellata, incertae sedis) in the Pacific Ocean. Acta Oceanologica Sinica, 32(4):71－76 |
| Morphology and distribution of Pronoctiluca (Dinoflagellata, incertae sedis) in the Pacific Ocean |
| Morphology and distribution of Pronoctiluca (Dinoflagellata, incertae sedis) in the Pacific Ocean |
| Received:December 23, 2011 Revised:July 11, 2012 |
| DOI：10.1007/s13131-013-0300-x |
| Key words:Alveolata basal dinoflagellates Dinophyceae heterotrophic flagellate Noctilucales plankton |
| 中文关键词: Alveolata basal dinoflagellates Dinophyceae heterotrophic flagellate Noctilucales plankton |
| 基金项目:A Grant-in-aid for Creative Basic Research from the MEXT, Japan under contract No.12NP0201, DOBIS (studies with regard to the NW and Equatorial Pacific Ocean); the Project BIOSOPE of the LEFE-CYBER (studies with regard to the SE Pacific Ocean); the Ministerio Español de Cienciay Tecnología under contract No. JCI-2010-08492; Brasil Conselho Nacional de Desenvolvimento Científico e Tecnológico BJT under contract No. 370646/2013-14. |
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| Abstract: |
| The diversity and distribution of Pronoctiluca, a marine dinoflagellate of enigmatic systematic position, was studied in the vicinity of the Kuroshio and Oyashio Currents, the Philippines, Celebes, Sulu and South China Seas, western and central equatorial and southeast Pacific Ocean. The abundance of Pronoctiluca was higher, with a wide vertical distribution, in eutrophic temperate regions, whereas it was nearly absent in surface waters of oligotrophic tropical regions. Most of the specimens corresponded to P. spinifera. Pronoctiluca pelagica, covered by hyaline layers and with no flagella, is considered as an encysted form. The bipartition was only observed in P. acuta-P. spinifera forms, that together with the occurrence of intermediate forms between P. spinifera and P. pelagica suggest that they may correspond to developmental stages of a single species. Pronoctiluca is essential to understanding the evolutionary history of the alveolates. |
| 中文摘要: |
| The diversity and distribution of Pronoctiluca, a marine dinoflagellate of enigmatic systematic position, was studied in the vicinity of the Kuroshio and Oyashio Currents, the Philippines, Celebes, Sulu and South China Seas, western and central equatorial and southeast Pacific Ocean. The abundance of Pronoctiluca was higher, with a wide vertical distribution, in eutrophic temperate regions, whereas it was nearly absent in surface waters of oligotrophic tropical regions. Most of the specimens corresponded to P. spinifera. Pronoctiluca pelagica, covered by hyaline layers and with no flagella, is considered as an encysted form. The bipartition was only observed in P. acuta-P. spinifera forms, that together with the occurrence of intermediate forms between P. spinifera and P. pelagica suggest that they may correspond to developmental stages of a single species. Pronoctiluca is essential to understanding the evolutionary history of the alveolates. |
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