Description of Procamallanus (Spirocamallanus) ruberii n.sp. (Camallanidae Railliet and henry, 1915) from marine fish Otolithus ruber (Sciaenidae) based on Light and Scanning Electron Microscopy

Abstract

A new species of parasitic nematode Procamallanus(Spirocamallanus) ruberii n. sp.(camallanidae) is described using light and scanning electron microscopy based on specimens collected from intestine of Otolithus ruber (Schn, 1792), which is a common marine Sciaenid fish of economic importance, collected during February 2006 to July 2007 from fresh landing of Karachi coast, Pakistan. Detailed light and scanning electron microscopy revealed some important taxonomical features like, Moderate sized worms, the body of the worms tapers gradually at its anterior and posterior extremity which is curved ventrally. The buccal capsule is oval in shape, surrounded by eight submedian cephalic papillae arranged in two circles. Inner surface of the whole capsule provided with 16---18 spiral thickenings. The tail is pointed in male and dull pointed in female

Keywords

• Parasitic nematode
• new species
• Otolithus ruber
• Marine fish
• Karachi coast