Metazoa – Obazoa (Opisthokonta)

Observations on Ptygura longicornis

Position in the EOL taxonomic tree. Please click on the tree view below to access EOL (Encyclopedia of Life).

Ptygura longicornis (Davis, 1867)

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: NM

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Scale bars indicate 100 µm.

Four images. Image no. 1 and 2 belong together. No. 2 is the marked version of no. 1.

First and second:	Rotifer on a Java moss (Taxiphyllum barbieri) filament. Mucilaginous sheath (arrow), corona (double arrowhead), lateral (ventral) antennae (arrowhead), showing clearly one of the numerous and very long setae attached to the tip (piston) of an antenna (double headed arrow).
Third:	Rotifer showing rotating corona, ventral view.
Fourth:	Rotifer half retracted into its sheath, the antennae are already extended.

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.

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Scale bars indicate 50 µm.

Six images. Three couplesof images, the second one in each case has arrow markings.

First couple:	Optical cross-sections. Folded corona (double headed arrow). The lateral and ventral antennae are already fully extended, one of them is in the focal plane.
Second couple:	Another optical cross-sections. The corona is fully opened, but the body is not yet completely extended, which becomes visible through the folded integument (double headed arrow). The arrow points to the mucilaginous sheath with enclosed detritus.
Third couple:	Fully unfolded corona (double arrowhead), one remaining eyespot, both lateral/ventral antennae (arrowhead) are visible, the lower one is very much shortened in perspective, while the upper one is almost perpendicular to the direction of photography. Many setae are shown in optical section (double headed arrow), also the piston (arrow), showing that the setae also run inside the antennae. Although the setae are significantly longer than the retracted body, they are fully retractable! They are likely to be coiled up in the body when retracted.

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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Observations on Ptygura longicornis

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