Nannochloropsis limnetica (Eustigmatophyceae), a new species of picoplankton from freshwater
High densities of Nannochloropsis , reaching up to 5.7 × 10 9 cells per litre, were observed in small inland water bodies in Germany. This is one of the few evidences of a Nannochloropsis species in a freshwater habitat. We describe a new species, N. limnetica Krienitz, Hepperle, Stich & Weiler...
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Published in | Phycologia (Oxford) Vol. 39; no. 3; pp. 219 - 227 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Abingdon
Taylor & Francis
01.05.2000
Taylor & Francis Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | High densities of
Nannochloropsis
, reaching up to 5.7 × 10
9
cells per litre, were observed in small inland water bodies in Germany. This is one of the few evidences of a
Nannochloropsis
species in a freshwater habitat. We describe a new species,
N. limnetica
Krienitz, Hepperle, Stich & Weiler sp. nov, for which the critical taxonomic characterization is based upon 18S rRNA sequence data. The ultrastructure of this species is characterized by the absence of a plastidial girdle lamella and pyrenoids. The plastid-bounding endoplasmic reticulum is continuous with the nuclear envelope, and the protoplasm contains numerous rodlike, doubly refringent lamellate vesicles. The pigment content of
N. limnetica
corresponds to that of other
Nannochloropsis
, but echinone was also found. The fatty acid composition of
N. limnetica
is similar to that of marine species; however, the total amount of fatty acids (351 μg mg
−1
C
−1
) is higher than in marine species. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0031-8884 2330-2968 |
DOI: | 10.2216/i0031-8884-39-3-219.1 |