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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 7791

W. Duane Hope; Deontostoma timmerchioi n. sp., a new marine nematode (Leptosomatidae) from Antarctica, with a note on the structure and possbile function of the ventromedian supplement. Trans.Amer.Micros.Soc. 93(3):314-324, 1974

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Deontostoma timmerchioi n. sp. is described as a new species of marine nematode from the interspicular spaces of an Antarctic sponge. Deontostoma angustifissulatum (Mawson, 1956) n. comb., D. brunni (Wieser, 1956) n. comb., and D. jae (Inglis, 1964) n. comb. are transferred to Deontostoma from the genus Thoracostoma. The morphology of the ventromedian supplement is described from whole mount preparations for light microscopy and SEM preparations of D. timmerchioi and from serial histological sections of D. californicum Steiner & Albin, 1933. Evidence is provided that this organ is a sensory receptor and possibly a chemoreceptor of pheromone secretion from hypodermal gland cells of females.