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Acta Parasitologica

, Volume 59, Issue 2, pp 229–237 | Cite as

Dichelyne (Dichelyne) spinigerus sp. nov. (Nematoda: Cucullanidae) from the marine fish Otolithes ruber (Sciaenidae) off Iran and first description of the male of Philometra otolithi Moravec et Manoharan, 2013 (Nematoda: Philometridae)

  • František Moravec
  • Maryam Khosheghbal
  • Jamileh Pazooki
Original Paper
  • 85 Downloads

Abstract

Recent parasitological examinations of the marine perciform fish (tigerteeth croaker) Otolithes ruber (Bloch et Schneider) (Sciaenidae) from off Iran yielded one new and one previously known nematode species: Dichelyne (Dichelyne) spinigerus sp. nov. (Cucullanidae) from the host’s intestine in the Persian Gulf and Philometra otolithi Moravec et Manoharan, 2013 (Philometridae) from the ovary in the Persian Gulf and the Sea of Oman. The new species D. spinigerus is mainly characterized by the tail tip of both sexes terminating in two shaply pointed spikes (one dorsal and one ventral) and bearing a pair of minute lateral cuticular spines at its base, situation of both deirids and the excretory pore well posterior to the level of the posterior end of oesophagus, absence of a precloacal sucker and the presence of one or two intestinal caeca. The male and small mature females of the gonad-infecting species P. otolithi are described for the first time, based on light and scanning electron microscopical studies. The male of P. otolithi is most similar to that of P. johnii Moravec et Ali, 2013, but differs from it by the structure of the cephalic end and the number of caudal papillae; both species also differ from each other by the presence of transverse lamellae in the buccal cavity of gravid and subgravid females of P. otolithi, which are missing in those of P. johnii.

Keywords

Parasitic nematode Dichelyne Philometra marine fish Otolithes Iran 

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Copyright information

© Versita Warsaw and Springer-Verlag Wien 2014

Authors and Affiliations

  • František Moravec
    • 1
  • Maryam Khosheghbal
    • 2
  • Jamileh Pazooki
    • 2
  1. 1.Institute of ParasitologyBiology Centre of the Academy of Sciences of the Czech RepublicČeská BudějoviceCzech Republic
  2. 2.Department of Marine Biology, Faculty of Biological SciencesShahid Beheshti UniversityTehranIran

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