Morphological Abnormalities of Indian Ring Skate, Orbiraja powelli (Alcock, 1898) (Rajiformes: Rajidae) Collected in the Southwest Coast of India

• Venugopal Bhagyalekshmi ^[1] ; Appukuttannair Biju Kumar ^[1]
  1. [1] University of Kerala

     University of Kerala

     India

     
• Localización: Thalassas: An international journal of marine sciences, ISSN 0212-5919, Vol. 36, Nº. 1, 2020, págs. 193-200
• Idioma: inglés
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• Resumen

  • Morphological abnormalities were observed for five specimens of Indian ring skate, Orbiraja powelli (Alcock, 1898) collected in the southwest coast of India. These abnormalities included an extra dorsal fin situated almost at the middle of the tail, a pouched skin fold at the tip of ventral snout, absence of caudal fin, presence of a tissue growth on the ventral side of disc and short tail without second dorsal fin and caudal fin. Morphological and molecular methods did not show variations in the specimens collected.