The Life-histories of Stylodinium sphaeraPascher and Cystodinedria inermis(Geitler) Pascher (Dinophyceae), Two Freshwater Facultative Predator-autotrophs

Popovský, Jiří; Pfiester, Lois A.

doi:10.1016/s0003-9365(82)80011-0

Cited by 19 publications

(15 citation statements)

References 8 publications

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“…Among the more remarkable dinoflagellate life cycles are those reported for members of the Phytodiniales. For example, Cystodinedria inermis appears to have some 35 life‐history stages encompassing biflagellate cells, a variety of lobose and filose amoeboid forms, and encysted stages (Pfiester and Popovsky 1979, Popovsky and Pfiester 1982). Unfortunately, the life cycle of C. inermis is known only from field collections and should be viewed with caution.…”

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confidence: 99%

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Dinoflagellate Life‐cycle Complexities

Coats

2002

Journal of Phycology

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confidence: 99%

“…Unfortunately, the life cycle of C. inermis is known only from field collections and should be viewed with caution. This is of particular concern as some stages in the life cycle of C. inermis are believed to be identical to Actinophrys sol and other protists that are well documented in the literature as distinct and valid species (Popovsky and Pfiester 1982).…”

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confidence: 99%

Dinoflagellate Life‐cycle Complexities

Coats

2002

Journal of Phycology

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“…In practice, it is difficult to distinguish between filose pseudopodia and filose subpseudopodia, the branching and/or anastomosing pseudopodia of granuloreticulosian and acarpomyxid amoebae, or even the arms of some heliozoa (41,42). In addition, filose pseudopodia are encountered in some nonamoeboid groups, for example in dinoflagellates (53). As a result of a heavy reliance in taxonomic treatments on the appearance of the pseudopodia, the naked filose amoebae have proved difficult to classify satisfactorily.…”

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confidence: 99%

On the Organization of the Naked Filose Amoeba, Nuclearia moebiusi Frenzel, 1897 (Sarcodina, Filosea) and Its Implications1

Patterson¹

1983

The Journal of Protozoology

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The ultrastructural organization of Nuclearia moebiusi is described. The organism has filose pseudopodia without supportive microtubules; it has mitochondria with flattened cristae, lacks extrusomes, microtubule‐organizing centers, and cytoplasmic microtubules. During cell division, microtubules appear only within the nucleus, and reorganization of the nuclear envelope occurs late in the nuclear division cycle. Ultrastructural studies reveal that Nuclearia spp. have a pattern of cellular organization distinct from that of other amoebae. Comparison of ultrastructural features suggests that this organism is only distantly related to other rhizopod amoebae (including other filose amoebae) and to the heliozoa.

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“…Many dinoflagellates have life stages that include cysts (Rengefors & Anderson 1998), sexual forms such as gametes and planozygotes (Pfiester & Anderson 1987), or benthic amoebae (Popovsky & Pfiester 1982. Transformations to these stages can affect the persistence and distribution of a population, and ecosystem dynamics (Tyler et al 1982, Blanco 1995, Kremp & Heiskanen 1999.…”

Section: Introductionmentioning

confidence: 99%

Quantification of Pfiesteria piscicida growth and encystment parameters using a numerical model

Anderson

Hood²,

Zhang³

2003

Mar. Ecol. Prog. Ser.

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In the past decade, there has been growing interest in understanding the physiological ecology and life cycle of toxic forms of Pfiesteria piscicida. However, transformations among noninducible (NON-IND; formerly described as nontoxic) stages have received less attention despite the fact that NON-IND stages are found in nature and may be ecologically important as prey and predators. NON-IND stages are also mixotrophic and have the ability to retain and utilize prey chloroplasts in a process termed 'kleptoplastidic mixotrophy'. Quantifying growth, grazing and encystment rates from P. piscicida laboratory experiments is confounded by the interrelationship between mixotrophy and life stage transformations. By fitting a numerical model to a laboratory experiment on NON-IND P. piscicida, we were able to isolate the potential mechanisms that cause encystment and speculate on the interrelationship between adverse conditions (i.e. low light and limiting prey) and life stage transformations. The structure of the laboratory experiment allowed for the estimation of several growth and encystment parameters including grazing rates, gross growth and assimilation efficiencies, as well as the retention time of chloroplasts. Model results suggest a link between encystment and mixotrophic ability. Furthermore, the model results suggest that encystment rates and gross growth and assimilation efficiencies calculated from the model are lower than expected.

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The Life-histories of Stylodinium sphaeraPascher and Cystodinedria inermis(Geitler) Pascher (Dinophyceae), Two Freshwater Facultative Predator-autotrophs

Cited by 19 publications

References 8 publications

Dinoflagellate Life‐cycle Complexities

Dinoflagellate Life‐cycle Complexities

On the Organization of the Naked Filose Amoeba, Nuclearia moebiusi Frenzel, 1897 (Sarcodina, Filosea) and Its Implications1

Quantification of Pfiesteria piscicida growth and encystment parameters using a numerical model

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