Nematode phylogeny and embryology.
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Biomedical subjects
S E Spiridonov
Publications and source records attributed to S E Spiridonov.
[A new hairworm in the genus Chordodes (Nematomorpha: Chordodidae) from the Minusinsk depression].
The gordian worm collected in July 1885 in the Gussevski pond on the Lugovka River, 30 km from Minusinsk, Siberia and identified as "Parachordodes kashgaricus Camerano, 1897" is described as a new species, Chordodes sajanensis sp. n.
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[Embryonic development of Trichocephalus trichiurus and Eucoleus oesophagicola (Nematoda, Trichocephalida)].
The embryonal development of Trichocephalus trichiurus and Eucoleus oesophagicola is described. Clevage of both species is full, bilaterally-symmetrical, determined. At the two blastomere stage the epidermis material is localized in the anterior one. The development of both species lacks the rhomb figure characteristic of nematodes. The mouth opening breaks independent of blastopore. The stylet anlage formation was noted for T. trichiurus.
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