Morphological and molecular description of Tenuisentis niloticus (Meyer, 1932) (Acanthocephala: Tenuisentidae) from Heterotis niloticus (Cuvier) (Actinopterygii: Arapaimidae), in Burkina Faso, with emendation of the family diagnosis and notes on new features, cryptic genetic diversity and histopathology

Systematic Parasitology
O M AminRichard A Heckmann

Abstract

Specimens described as Rhadinorhynchus niloticus Meyer, 1932 (Rhadinorhynchidae) from two male specimens collected from Heterotis niloticus (Cuvier) in the Egyptian Nile were later redescribed in the genus Tenuisentis Van Cleave, 1936 (Tenuisentidae) based on 12 specimens collected from the same host species in the White Nile. That redescription basically distinguished the two genera based on five traits but did not actually provide a formal description. His account left out information about cerebral ganglion, lemnisci, some reproductive structures, eggs, proboscis hook dissymmetry and roots, size of trunk and a few other structures. We provide (i) the first complete description of this species enhanced by SEM, molecular, and histo-pathological studies; (ii) expand the existing descriptions; (iii) correct questionable accounts advanced by Van Cleave on the cement gland and the hypodermal giant nuclei; and (iv) add descriptions of new features such as the para-receptacle structure which we also report from Paratenuisentis Bullock & Samuel, 1975, the only other genus in Tenuisentidae Van Cleave, 1936. The subsequent description of a few more specimens from the same host collected in Mali was more informative yet incomplete and a...Continue Reading

References

Mar 3, 1999·Molecular Phylogenetics and Evolution·T J NearS A Nadler
Jun 3, 2000·Journal of Molecular Evolution·M García-VarelaJ P Laclette
Dec 10, 2002·Molecular Phylogenetics and Evolution·Holger HerlynHans Zischler
Oct 8, 2003·Systematic Biology·Stéphane Guindon, Olivier Gascuel
Mar 17, 2006·The Journal of Parasitology·Martín García-Varela, Steven A Nadler
Apr 10, 2008·Molecular Biology and Evolution·David Posada

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