Circulatory system of red tail catfish (Phractocephalus hemioliopterus Bloch & Schneider, 1801): a corrosion cast study

Circulatory system Red tail catfish Corrosion cast Physiology.

Authors

  • Ali Taheri Mirghaed
    mirghaed@ut.ac.ir
    Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
  • Hooman Rahmati-Holasoo Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
  • Mehrdad Ardeshiri Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
  • Hoseinali Ebrahimzadeh Mousavi Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
  • Javad Sadeghinezhad Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
October 19, 2018

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Red tail catfish, Phractocephalus hemioliopterus, in one of the popular ornamental fish. The present study is aimed to describe and visualizes the cardiovascular system of this species with corrosion cast study method. For this purpose, 10 red tail catfish with 580 gr average weight were obtained and were filled their blood vessels and heart with fluid artificial resin made on the basis of methylmetacrylate after anaesthetizing and euthanizing. For complete polymerization and hardening of the methylmetacrylate, the fish were further submersed for 12-24 hrs in water bath following by 24-48 hrs submersion in a 25% solution of KOH to full maceration. Based on the results we describe the cardiovascular system i.e. the afferent and efferent vessels of gill, different parts of the heart, ventral aorta, dorsal aorta, intestinal and gastric vessels, liver, anterior and posterior parts of the kidneys, spleen, portal and hepatic vein.