Superregnum: Eukaryota
Supergroup: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Phylum: Acanthocephala
Classis: Eoacanthocephala
Ordo: Neoechinorhynchida
Familia: Tenuisentidae
Genera (2): Paratenuisentis – Tenuisentis
[source: Catalogue of Life: 2011 Annual Checklist
References
Links
Gibson, D. (2011). Tenuisentidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=159709 on 2011-12-02
Tenuisentidae
Tenuisentidae is a family of parasitic spiny-headed (or thorny-headed) worms. The family contains two genera, each with one species.
Description and taxonomy
| Neoechinorhynchida | |||||||||||||||||||||
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| Phylogenetic reconstruction for select species in the order Neoechinorhynchida.[1] |
Species
There are two genera, each with a single species.[2][a]
Paratenuisentis Bullock and Samuel, 1975
Paratenuisentis ambiguus (Van Cleave, 1921)
P. ambiguus infects the European eel (Anguilla anguilla).[3]
Tenuisentis Van Cleave, 1936
Tenuisentis niloticus (Meyer, 1932)[b]
T. niloticus Was found infecting the small intestine of the African arowana (Heterotis niloticus). The species name niloticus derives from the species name of the host fish, also niloticus. It has also been found in the Egyptian Nile and River Sourou at Di, Sourou Province, Burkina Faso, Sudan and Mali.[1] It has also been found in the electric catfish Malapterurus electricus Lekki Lagoon, Lagos, Nigeria.[4] The proboscis contains 16 (rarely 15) rows of hooks, each with 30–33 hooks with the average hook length per row being 1,105 um in the female and 993 um in the male. The hooks are not symmetrical in robustness dorso-ventrally but does contain similar length angles of curvature. The ventral hooks were considerably larger and more recurved than the dorsal hooks. The males have cement glands between 6.62 and 6.92 mm long. There are 86–146 nuclei.[1]
Hosts
Worms of the Tenuisentidae family exclusively parasitize fish.
Hosts for Tenuisentidae species
European eel swimming on river bed
The European eel is a hosta of P. ambiguus
Preserved African arowana on a white background
The African arowana is a host of T. niloticus
Notes
A binomial authority in parentheses indicates that the species was originally described in a genus other than the present genus.
The species was originally named Rhadinorhynchus niloticus.[1]
References
DOI 10.1007/s11230-015-9615-7|url=https://www.researchgate.net/
"ITIS - Report: Tenuisentidae".
J Helminthol. 2005 Mar;79(1):85-9. Accumulation of the precious metals platinum, palladium and rhodium from automobile catalytic converters in Paratenuisentis ambiguus as compared with its fish host, Anguilla anguilla. Zimmermann S1, von Bohlen A, Messerschmidt J, Sures B.PMID: 15831118 DOI: 10.1079/joh2004261
Pak J Biol Sci. 2007 Feb 1;10(3):427-32. A comparative study of the parasitic helminth fauna of Gymnarchus niloticus (Gymnarchidae) and Heterotis niloticus (Osteoglossidae) from Lekki Lagoon, Lagos, Nigeria. Akinsanya B1, Hassan AA, Otubanjo OA.
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