Morphology and distribution of Pronoctiluca (Dinoflagellata, incertae sedis) in the Pacific Ocean  

作　　者：GóMEZ Fernando 

机构地区：[1]Department of Biological Oceanography, Institute of Oceanography, University of S o Paulo

出　　处：《Acta Oceanologica Sinica》2013年第4期71-76,共6页海洋学报（英文版）

基　　金：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 Espa ol de Cienciay Tecnología under contract No.JCI-2010-08492;Brasil Conselho Nacional de Desenvolvimento Científico e Tecnológico BJT under contract No.370646/2013-14

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 high- er, 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.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 high- er, 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.

关 键 词：ALVEOLATA basal dinoflagellates DINOPHYCEAE heterotrophic flagellate Noctilucales PLANKTON 

分 类 号：Q958.8[生物学—动物学]