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NOTES ON SEXUAL REPRODUCTION IN DESMIDS: I. ZYGOSPORE FORMATION IN NATURE (WITH SPECIAL REFERENCE TO SOME UNUSUAL RECORDS OF ZYGOTES)
Author(s) -
Coesel P. F. M.
Publication year - 1974
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1974.tb00956.x
Subject(s) - zygote , reproduction , biology , sexual reproduction , ecology , fishery , embryo , embryogenesis
SUMMARY The, upon the whole, rare incidence of sexual reproduction in Desmids, and the possible explanation of this scarcity, are discussed. Records of zygotes of Cosmarium ochthodes Nordst. var. amoebum West, C. pachydermum Lund. var. aethiopicum W. & G. S. West, Micrasterias papillifera Bréb., and Tetmemorus laevis Kütz. ex Ralfs are discussed in some detail. The duplicity of the wall of the zygospore of Tetmemorus laevis , as originally described by R alfs (1848) but queried by K rieger (1937), is confirmed.