Tylocephalus auriculatus (Bütschli, 1866) Anderson, 1965

CGC strain code:

PDL0027

Pictures:

Click here for 230 Kb SEM pictures of the lip region.

Click here for a 73 Kb LM picture of live worms.

Click here for a 456 Kb line drawing.

Old codes:

JB-050

Locality:

Dry sand with shell fragments collected by Konjev Desender on 18 April 1991 in the littoral zone of Isla Española, Galápagos Archipelago, Ecuador.

Classification:

Chromadoria - Chromadorida - Leptolaimina - Plectoidea - Plectidae

Culture conditions:

- Xenic: E. coli on 1% pure agar + 5 µg/ml cholesterol. Other bacteria have not been removed.

- Xenic recipe courtesy of Björn Sohlenius): on agar with boiled soil extract, added salts (0.04% MgSO4.7H2O, 0.14% NaCl, 0.04% K2HPO4; 0.15% KNO3), peptone and mannit (each one knife-tip/300 ml). Other bacteria have not been removed.

Long-term storage:

Capable of surviving desiccation. Freezing was not attempted. Slowly desiccated plates can probably be stored permanently in liquid nitrogen.

Availability:

Dead and Gone!!

Description:

ANDERSON, R. V. (1966). An emendation of the diagnosis of both the subfamily and two genera of Wilsonematinae and a new genus, Ereptonema n. g. Canadian Journal of Zoology, 44: 923-935.

DE LEY, P. & COOMANS, A. (1997). Terrestrial nematodes from the Galápagos Archipelago. 7. Description of Tylocephalus nimius sp. n. and new data on the morphology, development and behaviour of Tylocephalus auriculatus (Bütschli, 1873) Anderson, 1966 (Leptolaimida: Plectidae). Fundamental and Applied Nematology, 20: 213-228.

Identification:

Paul De Ley.

Notes:

No males. Only three juvenile stages, each of which is characterized by a distinctly different head morphology. During feeding, juveniles and adults swing their head dorsally and ventrally like metronomes.

Last revised 27 March 1998