Trematodes from Red Sea fishes: On the validity of Helicometra marmoratae Nagaty et Abdel-Aal, 1962 and the description of H.aegyptense sp.nov. [Opecoelidae Ozaki, 1925]

• Autorzy: Hassanine Reda M El-S
• Języki publikacji: EN

Abstrakty

EN

Specimens of the fishes Siganus spinus L. (Siganidae) and Sargocentron spiniferum Forsskål (Holocentridae) were caught in the Red Sea off the coast of Sharm El-Sheikh, South Sinai, Egypt. Twenty-three (46%) and 12 (20%) of these fishes, respectively, were found to harbour intestinal trematodes. Siganus spinus was parasitized by Helicometra marmoratae Nagaty et Abdel-Aal, 1962 (Opecoelidae Ozaki, 1925) and S. spiniferum by Helicometra aegyptense sp. nov. (Opecoelidae Ozaki, 1925). Based on a large number of specimens collected from its type host and locality, H. marmoratae is broadly redescribed for the first time, and its type specimen is re-examined. The validity of this species is discussed and considered a new synonym of H. fasciata (Rudolphi, 1819) Odhner, 1902 (type species of the genus). Helicometra aegyptense sp. nov. is similar to H. equilata (Manter, 1933) Siddiqi et Cable, 1960, H. nasae Nagaty et Abdel-Aal, 1962, H. pteroisi (Gupta, 1956) Fischthal et Kuntz, 1965 and H. interrupta Hassanine, 2005 in having a short forebody and a long cirrus sac extending posterior to the ventral sucker, but differs significantly from them or unique in having a distinctly elongate pharynx, a larger sucker ratio and vitelline follicles grouped in small clusters arranged in two lateral rows on each side of the body. The valid species of Helicometra are listed in four principal groups.

Słowa kluczowe

EN

Opecoelidae; fish; Helicometra aegyptense; Helicometra marmoratae; Halocentridae; trematode fauna; trematode; Siganidae; Siganus spinus; Digenea; Sargocentron spinferum; Red Sea

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 2007
• Tom: 52
• Numer: 1
• Opis fizyczny: p.18-23,fig.,ref.

Twórcy

autor

Hassanine Reda M El-S

• Assiut University, El-Kharga, New Valley, Egypt

Bibliografia

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