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MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA
Tang, Ying Zhong1,2; Harke, Matthew J.1; Gobler, Christopher J.1; Gobler, CJ
2013-12-01
发表期刊JOURNAL OF PHYCOLOGY
ISSN0022-3646
卷号49期号:6页码:1084-1094
文章类型Article
摘要We report on morphological observations, phylogenetic analyses, bloom dynamics, and ichthyotoxicity of the common but poorly characterized dinoflagellate Pheopolykrikos hartmannii (Zimmermann) Matsuoka et Fukuyo. From 2008 to 2010 in the Forge River Estuary, NY, USA, P.hartmannii bloomed during summer and early fall, achieving densities exceeding 8,000 cellsmL(-1) and often dominating microphytoplankton communities. Large subunit (LSU) and small subunit (SSU) rDNA sequences demonstrated that NY isolates of P.hartmannii sequences were 99%-100% identical to P.hartmannii isolates from eastern US and Korea. In both the LSU and SSU rDNA phylogenies, the clades containing P.hartmannii sequences were distinct sister clades to those composed of Polykrikos schwartzii and P.kofoidii. In the LSU rDNA phylogeny, however, the clade composed of P.hartmannii and a sequence of the photosynthetic Polykrikos lebourae was well separated from the clade composed of 10 entries of Polykrikos schwartzii and P.kofoidii. In addition, a gap of similar to 180 bases was observed when the LSU rDNA sequences of P.hartmannii were aligned with P.schwartzii and P.kofoidii but was not observed in the alignment between P.hartmannii and P.lebourae. Using scanning electron microscopy, several morphological features previously not reported for P.hartmannii were observed: a ventral groove located in the sulcus, a deep arc-like apical concavity within the area of apical groove, scale-like vesicles, and a shallow, completely enclosed, loop-like apical groove. Resting cysts with arrow-like surface spines were produced heterothallically by crossing clonal isolates and germinated single gymnoid cells. Finally, filtered and unfiltered bloom water from the Forge River and clonal cultures of P.hartmannii exhibited acute ichthyotoxicity to juvenile sheepshead minnows (Cyprinodon variegates) and aeration did not mitigate this effect, suggesting P.hartmannii is an ichthyotoxic, harmful alga.; We report on morphological observations, phylogenetic analyses, bloom dynamics, and ichthyotoxicity of the common but poorly characterized dinoflagellate Pheopolykrikos hartmannii (Zimmermann) Matsuoka et Fukuyo. From 2008 to 2010 in the Forge River Estuary, NY, USA, P.hartmannii bloomed during summer and early fall, achieving densities exceeding 8,000 cellsmL(-1) and often dominating microphytoplankton communities. Large subunit (LSU) and small subunit (SSU) rDNA sequences demonstrated that NY isolates of P.hartmannii sequences were 99%-100% identical to P.hartmannii isolates from eastern US and Korea. In both the LSU and SSU rDNA phylogenies, the clades containing P.hartmannii sequences were distinct sister clades to those composed of Polykrikos schwartzii and P.kofoidii. In the LSU rDNA phylogeny, however, the clade composed of P.hartmannii and a sequence of the photosynthetic Polykrikos lebourae was well separated from the clade composed of 10 entries of Polykrikos schwartzii and P.kofoidii. In addition, a gap of similar to 180 bases was observed when the LSU rDNA sequences of P.hartmannii were aligned with P.schwartzii and P.kofoidii but was not observed in the alignment between P.hartmannii and P.lebourae. Using scanning electron microscopy, several morphological features previously not reported for P.hartmannii were observed: a ventral groove located in the sulcus, a deep arc-like apical concavity within the area of apical groove, scale-like vesicles, and a shallow, completely enclosed, loop-like apical groove. Resting cysts with arrow-like surface spines were produced heterothallically by crossing clonal isolates and germinated single gymnoid cells. Finally, filtered and unfiltered bloom water from the Forge River and clonal cultures of P.hartmannii exhibited acute ichthyotoxicity to juvenile sheepshead minnows (Cyprinodon variegates) and aeration did not mitigate this effect, suggesting P.hartmannii is an ichthyotoxic, harmful alga.
关键词Harmful Algal Blooms (Habs) Ichthyotoxicity Pheopolykrikos Hartmannii Sheepshead Minnows
学科领域Plant Sciences ; Marine & Freshwater Biology
DOI10.1111/jpy.12114
URL查看原文
收录类别SCI
语种英语
WOS研究方向Plant Sciences ; Marine & Freshwater Biology
WOS类目Plant Sciences ; Marine & Freshwater Biology
WOS记录号WOS:000328343400007
WOS关键词HARMFUL ALGAL BLOOMS ; POLYKRIKOS-KOFOIDII ; DINOFLAGELLATE CYSTS ; LONG-ISLAND ; NOV ; EUTROPHICATION ; GYMNODINIALES ; SCHWARTZII ; INFERENCE ; MRBAYES
WOS标题词Science & Technology ; Life Sciences & Biomedicine
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/16309
专题海洋地质与环境重点实验室
通讯作者Gobler, CJ
作者单位1.SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
第一作者单位中国科学院海洋研究所
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Tang, Ying Zhong,Harke, Matthew J.,Gobler, Christopher J.,et al. MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA[J]. JOURNAL OF PHYCOLOGY,2013,49(6):1084-1094.
APA Tang, Ying Zhong,Harke, Matthew J.,Gobler, Christopher J.,&Gobler, CJ.(2013).MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA.JOURNAL OF PHYCOLOGY,49(6),1084-1094.
MLA Tang, Ying Zhong,et al."MORPHOLOGY, PHYLOGENY, DYNAMICS, AND ICHTHYOTOXICITY OF PHEOPOLYKRIKOS HARTMANNII (DINOPHYCEAE) ISOLATES AND BLOOMS FROM NEW YORK, USA".JOURNAL OF PHYCOLOGY 49.6(2013):1084-1094.
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