The study focuses on the differences between large and small forms of a rotifer species, Macrotrachela quadricornifera (Rotifera, Bdelloidea), by reviewing the literature and adding further morphological differences. Evidence from life-history traits, growth patterns and trophi (hard structures of the specialized rotifer pharynx) morphology suggests that the large and small forms of M. quadricornifera should not be considered the same species. Macrotrachela vanoyei Schepens, 1954 is re-established as a good species, differing from M. quadricornifera in the smaller size of body, egg and trophi, as well as the number of proximal and distal teeth on the trophi.

A reconsideration of the taxonomic status of Macrotrachela quadricornifera (Rotifera, Bdelloidea) / C. Ricci. - In: JOURNAL OF ZOOLOGY. - ISSN 0952-8369. - 255:2(2001), pp. 273-277.

A reconsideration of the taxonomic status of Macrotrachela quadricornifera (Rotifera, Bdelloidea)

C. Ricci
2001

Abstract

The study focuses on the differences between large and small forms of a rotifer species, Macrotrachela quadricornifera (Rotifera, Bdelloidea), by reviewing the literature and adding further morphological differences. Evidence from life-history traits, growth patterns and trophi (hard structures of the specialized rotifer pharynx) morphology suggests that the large and small forms of M. quadricornifera should not be considered the same species. Macrotrachela vanoyei Schepens, 1954 is re-established as a good species, differing from M. quadricornifera in the smaller size of body, egg and trophi, as well as the number of proximal and distal teeth on the trophi.
Bdelloidea; Macrotrachela quadricornifera; Morphology; Size; Taxonomy; Trophi
Settore BIO/05 - Zoologia
JOURNAL OF ZOOLOGY
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/15617
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