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  • Online Resource  (3)
  • BOWSER, SAMUEL S.  (3)
  • 2000-2004  (3)
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  • Online Resource  (3)
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  • 2000-2004  (3)
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  • 1
    Online Resource
    Online Resource
    Vellaria zucchellii sp. nov. a new monothalamous foraminifer from Terra Nova Bay, Antarctica
    Cambridge University Press (CUP) ; 2004
    In:  Antarctic Science Vol. 16, No. 3 ( 2004-09), p. 307-312
    Details
    In: Antarctic Science, Cambridge University Press (CUP), Vol. 16, No. 3 ( 2004-09), p. 307-312
    Abstract: Vellaria zucchellii sp. nov. is described from coastal sediment samples from Terra Nova Bay (Ross Sea, Antarctica, 74°40′28.1″S, 164°04′11.6″E, Tethys Bay, 25 m depth). This organic-walled monothalamous (single chambered) foraminifer is characterized by a wide, prominent aperture that facilitates attachment to larger particles (small sand grains or other foraminiferal shells). It shares this feature with the two other known species of Vellaria , both of which were described from an Indian estuary. Phylogenetic analysis of small subunit rRNA gene sequences suggest that V. zucchellii is related to the genus Psammophaga . However, the new species lacks the mineral grain inclusions that are characteristic of Psammophaga . The description of this new organic-walled monothalamous foraminiferal species further documents the high taxonomic diversity of these delicate and abundant protists in the polar benthic communities.
    Type of Medium: Online Resource
    ISSN: 0954-1020 , 1365-2079
    URL: Article
    DOI: 10.1017/S0954102004002081
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2004
    detail.hit.zdb_id: 2104104-0
    detail.hit.zdb_id: 1009128-2
    SSG: 12
    SSG: 13
    SSG: 14
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Unexpected Foraminiferal Diversity Revealed by Small‐subunit rDNA Analysis of Antarctic Sediment
    Wiley ; 2004
    In:  Journal of Eukaryotic Microbiology Vol. 51, No. 2 ( 2004-03), p. 173-179
    Details
    In: Journal of Eukaryotic Microbiology, Wiley, Vol. 51, No. 2 ( 2004-03), p. 173-179
    Abstract: ABSTRACT. Studies of benthic Foraminifera typically rely on the morphological identification of dried specimens. This approach can introduce sampling bias against small, delicate, or morphologically ambiguous forms. To overcome this limitation, we extracted total DNA from sediment followed by PCR using group‐ and species‐specific primers. Phylogenetic analyses revealed that approximately ninety percent of the PCR products represented previously undescribed sequence types that group with undersampled members of the allogromiid Foraminifera. We also used a modification of this technique to track individual species in sediment fractions too fine for normal morphological identification, and to confirm species placement of morphologically ambiguous foraminiferans. We were able to identify the DNA of several large foraminiferal species in fine fractions in a seasonally‐dependent manner, indicating that in some seasons the majority of the standing stock of these species exists as gametes/juveniles. The approach outlined here represents a powerful strategy for exploring the total diversity of benthic foraminiferal communities.
    Type of Medium: Online Resource
    ISSN: 1066-5234 , 1550-7408
    URL: Issue
    URL: Article
    DOI: 10.1111/jeu.2004.51.issue-2
    DOI: 10.1111/j.1550-7408.2004.tb00542.x
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2004
    detail.hit.zdb_id: 2126326-7
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    Freshwater Foraminiferans Revealed by Analysis of Environmental DNA Samples
    Wiley ; 2003
    In:  Journal of Eukaryotic Microbiology Vol. 50, No. 2 ( 2003-03), p. 135-139
    Details
    In: Journal of Eukaryotic Microbiology, Wiley, Vol. 50, No. 2 ( 2003-03), p. 135-139
    Abstract: ABSTRACT. Sediment‐dwelling protists are among the most abundant meiobenthic organisms, ubiquitous in all types of aquatic ecosystems. Yet, because their isolation and identification are difficult, their diversity remains largely unknown. In the present work, we applied molecular methods to examine the diversity of freshwater Foraminifera, a group of granuloreticulosan protists largely neglected until now. By using specific PCR primers, we detected the presence of Foraminifera in all sediment samples examined. Phylogenetic analysis of amplified SSU rDNA sequences revealed two distinct groups of freshwater foraminiferans. All obtained sequences branched within monothalamous (single‐chambered), marine Foraminifera, suggesting a repeated colonization of freshwater environments. The results of our study challenge the traditional view of Foraminifera as essentially marine organisms, and provide a conceptual framework for charting the molecular diversity of freshwater granuloreticulosan protists.
    Type of Medium: Online Resource
    ISSN: 1066-5234 , 1550-7408
    URL: Issue
    URL: Article
    DOI: 10.1111/jeu.2003.50.issue-2
    DOI: 10.1111/j.1550-7408.2003.tb00248.x
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2003
    detail.hit.zdb_id: 2126326-7
    SSG: 12
    Location Call Number Limitation Availability
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