New Korean records of two amoeboid protozoa (Protist); Vannella bursella and Pseudoparamoeba sp.
Author
Lee, Won Je
text
Journal of Species Research
2016
2016-10-31
5
3
381
384
http://dx.doi.org/10.12651/jsr.2016.5.3.381
journal article
10.12651/JSR.2016.5.3.381
2713-8615
13141979
Vannella bursella
(Page, 1974)
Smirnov
et al.
, 2007
(
Fig. 1
)
Material examined.
Korea
:
Kyungsangnamdo
,
Masan Bay
(
35°23′N
, 128°68′E),
29 Aug. 2012
, from marine water column, collected by
Won Je Lee.
Type
strain, live cells are kept with the
Culture Collection of Protists
,
Kyungnam University
,
Korea
, reference “
KM054
”
.
Description.
Locomotive form flattened ovoid, semi-cir cular. Frontal hyaloplasm occupies about half the body length; posterior end widely rounded, straight or (rarely) concave. Greatest dimension of locomotive form 1729 μm (avg. 23 μm). Single vesicular nucleus with central nucleolus. Floating form a rounded mass, without pseudopodia or with few blunt hyaline pseudopodia, rarely exceeding in length the diameter of the central mass. Cell surface includes glycostyles. Cysts not seen.
Remarks.
This species resembles
Vannella arabica
Page,
1980
in cell length, but its locomotive forms are rather different from those of
V. arabica
.
Vannella bursella
has clearly semicircular locomotive forms while
V. arabica
has generally fanshaped forms. In the culture of
V. bursella
, most cells were semicircular forms, but few cells were fanshaped forms. In addition, according to
Smirnov
et al.
(2007)
, the species group of
V. arabica
,
V. bursella
and
V. calycinucleolus
has 100% support by three methods (NJ, PHYML and Bayesian trees), and only 5 bases differ between
V. arabica
and
V. bursella
; one at the beginning of the sequence, the rest in the most variable parts of the molecule. Further studies are need ed to clarify these two species.
Fig. 1.
Vannella bursella
, isolate KM054, Locomotive forms of seven different cells. (a)(c) Cell 1, (c) note pseudopodia drawn from posterior end of cell. (d) Cell 2. (e) Cell 3. (f)(h) Cell 4. (i) Cells 5 & 6. (j)(l) Cell 7. Nucleus (N), food vacuole (FV). All micrographs are DIC (differential interference contrast) images with the exceptions of (d) and (h) (phase contrast images). Scale bar in (l) = 10 μm for all images.
Habitat.
Marine water.
World distribution.
England
,
Korea
.
Deposition.
NIBRPR0000106579, NIBRPR0000106580.
Order
Dactylopodida Smirnov
et al.
, 2005
Family
Paramoebidae (Poche, 1913) Kudryavtsev
et al.
, 2011
Genus
Pseudoparamoeba
Page, 1979