Heterotrophic flagellates from the water column in Port Jackson, Sydney, Australia

Tong, Susan M.; Nygaard, Kari; Bernard, Catherine; Vørs, Naja; Patterson, David J.

doi:10.1016/s0932-4739(98)80027-8

Cited by 68 publications

(92 citation statements)

References 67 publications

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“…Often original species descriptions had to be consulted (e.g. Larsen & Patterson 1990, Vørs 1992, Patterson et al 1993, Patterson & Simpson 1996, Tong et al 1998. Video documentation helped in the verification of several species by other specialists.…”

Section: Methodsmentioning

confidence: 99%

“…Table 1 contains a list of flagellate species which occurred in sediment and plankton samples at depths ≤1000 m. Species names are given when all characters of specimens fitted well to the original descriptions or to recent redescriptions (e.g. Larsen & Patterson 1990, Vørs 1992, Tong et al 1998. It was often impossible to extract specimens of rare species for a more detailed observation on board.…”

Section: Qualitative Investigationsmentioning

confidence: 99%

See 1 more Smart Citation

Deep-sea heterotrophic nanoflagellates of the Eastern Mediterranean Sea: qualitative and quantitative aspects of their pelagic and benthic occurrence

Arndt¹,

Hausmann²,

Wolf³

2003

Mar. Ecol. Prog. Ser.

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Due to the significant lack of information on the community structure of deep-sea nanoflagellates and other nanofauna components as a potentially important component of deepsea matter fluxes, the aim of the present study was to check whether there is a specific deep-sea nanofauna (< 20 µm) community. Studies were carried out in the deep oligotrophic basins of the Eastern Mediterranean Sea around Greece (1249 to 4260 m depth). Direct microscopic counts and quantitative cultivation techniques were used to estimate the abundance and community structure of heterotrophic flagellates and amoebae from abyssopelagial samples and deep-sea sediments. Euglenids and bodonids were the dominant groups comprising about 2/3 of the abundance and biomass of flagellate nanofauna. Our direct counts clearly demonstrate that attention also has to be paid to species which seldom appear in crude cultures. The records of hemimastigid-like forms were remarkable in this respect. Among the 35 deep-sea nanofauna taxa identified here, 8 never appeared in cultures and 18 taxa were found only in cultures. At least 9 taxa have not been previously recorded from the deep sea. Meteora sporadica seems to be the first record of an endemic deep-sea heterotrophic nanoprotist. The variety of functional groups recorded indicates the nanofauna as part of a complex microbial food web in the deep sea. Estimates of potential maximum growth rates of fresh isolates from deep-sea waters ranged from 1 to 6.3 d -1 (Ancyromonas, Amastigomonas, Bodo, Caecitellus, Cafeteria, Kiitoksia, Massisteria, Percolomonas). There was considerable clonal variability.KEY WORDS: Protozoa · Biodiversity · Flagellates · Nanofauna · Amoebae · Growth rate · Deep-sea benthos · Deep-sea plankton Resale or republication not permitted without written consent of the publisher

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Section: Methodsmentioning

confidence: 99%

Section: Qualitative Investigationsmentioning

confidence: 99%

Deep-sea heterotrophic nanoflagellates of the Eastern Mediterranean Sea: qualitative and quantitative aspects of their pelagic and benthic occurrence

Arndt¹,

Hausmann²,

Wolf³

2003

Mar. Ecol. Prog. Ser.

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“…Careful examination by light microscopy ensured the absence of contaminating protozoa, yeasts or fungal hyphae. Microscopic observations were compared with several manuals and publications displaying identified protozoa (Page, 1988;Ekelund and Patterson, 1997;Tong et al, 1998;Atkins et al, 2000;Lee and Patterson, 2000). Approximately every 2 months, cultures were transferred to fresh medium.…”

Section: Isolation and Cultivationmentioning

confidence: 99%

Molecular comparison of cultivable protozoa from a pristine and a polycyclic aromatic hydrocarbon polluted site

Lara

Berney

Ekelund

et al. 2007

Soil Biology and Biochemistry

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We compared the abundance and diversity of cultivable protozoa (flagellates and amoebae) in a polycyclic aromatic hydrocarbon (PAH) polluted soil and an unpolluted control, by isolating and cultivating clonal strains. The number of cultivable protozoa was higher in the polluted soil; however, the polluted soil displayed an impoverished community, dominated by certain taxa, such as Acanthamoeba sp. We isolated a total of 31 protozoan strains to characterize them morphologically and by 18S rRNA gene sequence analysis. This approach, i.e. combining morphological and molecular information had the advantage of providing quantitative data, information on morphology but also an accurate positioning of the isolates in 18S rRNA trees.

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“…subtilis has been observed in the North Atlantic (Throndsen, 1969;Patterson et al, 1993), from Arctic and Antarctic marine waters (Vørs, 1992a, b), the Mediterranean (Griessmann, 1913;Hollande & Cachon, 1950;Massana et al, 2004), the Baltic Sea (Vørs, 1992a), off the shores of Japan (Throndsen, 1983), in the equatorial Pacific (Vørs et al, 1995) and at Sydney, Australia (Tong et al, 1998). The larger species, 'T.…”

Section: Introductionmentioning

confidence: 99%

Telonema antarcticum sp. nov., a common marine phagotrophic flagellate

Klaveness

Shalchian-Tabrizi

Thomsen

et al. 2005

International Journal of Systematic and Evolutionary Microbiology

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Telonema is a widely distributed group of phagotrophic flagellates with two known members. In this study, the structural identity and molecular phylogeny of Telonema antarcticum was investigated and a valid description is proposed. Molecular phylogeny was studied using small-subunit rRNA (SSU rRNA) gene sequences. The pear-shaped cell had two subequal flagella that emerged laterally on the truncated antapical tail. One flagellum had tripartite hairs. The cell was naked, but had subsurface vesicles containing angular paracrystalline bodies of an unknown nature. A unique complex cytoskeletal structure, the subcortical lamina, was found to be an important functional and taxonomic feature of the genus. Telonema has an antero-ventral depression where food particles are ingested and then transferred to a conspicuous anterior food vacuole. The molecular phylogeny inferred from the SSU rRNA gene sequence suggested that Telonema represents an isolated and deep branch among the tubulocristate protists.

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Heterotrophic flagellates from the water column in Port Jackson, Sydney, Australia

Cited by 68 publications

References 67 publications

Deep-sea heterotrophic nanoflagellates of the Eastern Mediterranean Sea: qualitative and quantitative aspects of their pelagic and benthic occurrence

Deep-sea heterotrophic nanoflagellates of the Eastern Mediterranean Sea: qualitative and quantitative aspects of their pelagic and benthic occurrence

Molecular comparison of cultivable protozoa from a pristine and a polycyclic aromatic hydrocarbon polluted site

Telonema antarcticum sp. nov., a common marine phagotrophic flagellate

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