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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 2649

Claudia Ricci and Giulio Melone; Macrotrachela quadricornifera (Rotifera, Bdelloidea); a SEM Study on Active and Cryptobiotic Animals. Zoologica Scripta 13(3):195-200, 1984

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The general morphology of Macrotrachela quadricornifera Milne, 1886 in the active and cryptobiotic states is analyzed under the scanning electron microscope. Some foot peculiarities not previously observed are reported, in particular the canaliculated spurs and presence of a sort of groove on the toes. The integument of active animals is perforated with pores and is microsculptured in the trunk region. During cryptobiosis, the animal is contracted, its foot and head being retracted into the trunk: the same microsculpture of the trunk integument is observed.