Histopathological alterations in Van fish (Alburnus tarichi Guldenstadt, 1814) exposed to tebuconazole


Oguz E. K. , Ergoz B., Oguz A. R.

CHEMISTRY AND ECOLOGY, vol.38, no.1, pp.17-26, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.1080/02757540.2021.2017902
  • Journal Name: CHEMISTRY AND ECOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Environment Index, Food Science & Technology Abstracts, Geobase, Pollution Abstracts, Veterinary Science Database
  • Page Numbers: pp.17-26
  • Keywords: Histopathology, fungicide, tebuconazole, Van fish, Lake Van, ALKALINE LAKE VAN, CHALCALBURNUS-TARICHI, ACUTE TOXICITY, GILL, TISSUES, PESTICIDES, CYPRINIDAE, EXCRETION, LIVER, WATER
  • Van Yüzüncü Yıl University Affiliated: Yes

Abstract

Tebuconazole (TEB) is one of the most commonly used fungicides in the Lake Van Basin in the Eastern Anatolia Region, Turkey, which is one of the largest alkaline lakes in the world. In this study, the effects of TEB on the Van fish, the only vertebrate species living in Lake Van were investigated. The TEB was administered at a dose of 2.5 mg/L to the Van fish, which were examined histologically via the gill, liver, and kidney tissues after 24, 48, 72 and 96 h of exposure to TEB. Normal histological structure was observed in the gill, liver, and kidney tissues in the control group. Epithelial hyperplasia, epithelial necrosis, epithelial lifting, lamellar fusion, and an increase in mucus cell counts were observed in the gill tissues of the fish exposed to TEB. Dilatation and congestion of the sinusoids, melano-macrophages aggregation, and, focal necrosis were detected in the liver tissues of the fish exposed to TEB. Bleeding in the kidney tissues, hyaline droplet degeneration, contraction of the glomerulus and enlargement of the space within the Bowman's capsule were observed. The findings of the present study indicated that sublethal concentrations of TEB result in histopathologic changes in the gill, liver, and kidney.