Amoebozoa (Part), Stramenopiles (Part), Rhizaria (Part)
Observations on Saccamoeba limax
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Saccamoeba limax (Dujardin, 1841) Page, 1974
Most likely ID: n.a.
Basionym: Amoeba limax Dujardin, 1841
Add’l Synonyms: Hartmanella limax (Dujardin, 1841) Page, 1969

Sampling date 06/2007. Scale bar indicates 10 µm.
Saccamoeba limax with its villous uroid. Two pseudopods protrude only during change of direction. During ordinary movement on substrate the appearance is monopodial. The inserts show states of defecation.
Place name: Bog Dosenmoor near Neumuenster (Schleswig-Holstein, Germany)
Latitude: 54.136219 Longitude: 10.026433
Microscope Zeiss Universal, camera Olympus C7070WZ.

Sampling date 10/2008. Scale bar indicates 10 µm.
Floating form of Saccamoeba limax with a characteristic villous collar and the cuboidal crystals. The vesicular nucleus with its huge central nucleolus lies in the middle of the cell. Left of Saccamoeba we can see the prey: Pyxidicula spec., a testate amoeba.
Place name: Pond Suploch, Hiddensee (Germany)
Latitude: 54.538638 Longitude: 13.097802
Microscope Zeiss Universal, camera Olympus C7070WZ.
Scale bars indicate 10 µm (1, 6, 7), 25 µm (2–5).
7 stages of phagocytosis of Pyxidicula operculata.
Last image: Phagocytosis of Pyxidicula has completed. On the right the typical finely papillate bulbous uroid which recalls the family Amoebidae. Two empty tests of Pyxidicula had been discharged and stayed connected through fine plasma ribbons to the uroid.
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Pond Suploch, Hiddensee (Germany)
Latitude: 54.538638 Longitude: 13.097802
Microscope Zeiss Universal, camera Olympus C7070WZ.
Scale bars indicate 25 µm.
Motion study, 2 stages.
First: | Saccamoeba limax in „classical“ shape as it can be found in literature. From the left to the right we see the cuboidal crystals (typical for this species), several food vacuoles, the vesicular nucleus with its huge central nucleolus, the contractile vacuole and another food vacuole. On the right the likewise typical finely papillate bulbous uroid which recalls the family Amoebidae. |
Second: | Saccamoeba limax changes its direction of locomotion. During this period the classical, monopodial shape is lost. |
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Pond Suploch, Hiddensee (Germany)
Latitude: 54.538638 Longitude: 13.097802
Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.
Scale bars indicate 25 µm.
Motion study, 3 stages.
Saccamoeba limax in „classical“ shape as it can be found in literature. There are several cuboidal crystals (typical for this species), food vacuoles and the vesicular nucleus with its huge central nucleolus. On the left the likewise typical finely papillate bulbous uroid which recalls the family Amoebidae.
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Tropical freshwater aquarium
Latitude: 54.3018013 Longitude: 10.07120132
Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.
© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.
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crassa
digitus
var. lamellosum
digitus
var. latum
oblongum
interruptum
spec.
spec.
kinahanii
spec.
polymorphum
var. polymorphum
spec.
spirostriolatum
digitus
brebissonii
rotata
swartzii
capitulum
antilopaeum
neosinuosum
brebissonii
pachydermum
thomasiana
var. notata
ansatum
forficulatum
var. verrucosum
neodepressum
armatum
oblongum
porteanum
truncata
rhomboidale
furcatum
uncinatum
dissiliens
pseudonitidulum
var. validum
truncata
var. bahusiensis
bidentatum
hirsutum
cucurbitinum
minor
pyramidatum
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var. quadrata
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inconspicuum
borreri
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coeseli
margaritacaeum
bicuneatum
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simplicius
crenulatum
crassum
simonyi
var. sparsiaculeatum
caelatum
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sparsepunctatum
ehrenbergii
didelta
spongiosum
var. perbifidum
connatum
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subarctoum
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var. trabecula
humerosum
teliferum
dejectus
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conspersum
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papillifera
arboricola
venustum
var. excavatum
viridis
pulchellum
tripus
granulatus
var. granulatus
subspicatus
humerosum
var. affine
nostochinearum
convergens
arcuata
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lunaris
grevillei
lunatus
alternans
irregularis
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viridis
cystozygote
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New items
crassa
digitus
var. lamellosum
digitus
var. latum
oblongum
interruptum
spec.
spec.
kinahanii
spec.
polymorphum
var. polymorphum
spec.
spirostriolatum
digitus
brebissonii
rotata
swartzii
capitulum
antilopaeum
neosinuosum
brebissonii
pachydermum
thomasiana
var. notata
ansatum
forficulatum
var. verrucosum
neodepressum
armatum
oblongum
porteanum
truncata
rhomboidale
furcatum
uncinatum
dissiliens
pseudonitidulum
var. validum
truncata
var. bahusiensis
bidentatum
hirsutum
cucurbitinum
minor
pyramidatum
truncata
var. quadrata
binale
var. gutwinskii
inconspicuum
borreri
americana
quadratulum
trabecula
var. elongatum
coeseli
margaritacaeum
bicuneatum
apiculata
simplicius
crenulatum
crassum
simonyi
var. sparsiaculeatum
caelatum
crux-melitensis
sparsepunctatum
ehrenbergii
didelta
spongiosum
var. perbifidum
connatum
denticulata
subarctoum
trabecula
var. trabecula
humerosum
teliferum
dejectus
spec.
conspersum
komarekii
papillifera
arboricola
venustum
var. excavatum
viridis
pulchellum
tripus
granulatus
var. granulatus
subspicatus
humerosum
var. affine
nostochinearum
convergens
arcuata
integrum
aureus
rotata
lunaris
grevillei
lunatus
alternans
irregularis
laevis
var. laevis
ehrenbergianum
luetkemuelleri
var. carniolicum
reticulatum
tetras
limneticum
viridis
cystozygote
tetrachotoma
simplex
var. sturmii
biradiatum
microporum
var. octaedricum
braunii
reinhardtii
pusillum
lacustris
speculum
diaphanum