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Archives of Ecotoxicology
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2644-4747
Published by SciCell s.r.o. Homepage  [5 journals]
  • Histopathological Alterations in Nile Tilapia Oreochromis Niloticus (L.)
           as Influenced by Dietary Antiparasitic Drug Emamectin Benzoate at the
           Recommended and Higher Doses for an Extended Period

    • Authors: Thangapalam Jawahar Abraham, Roy Beryl Julinta, Prasanna Kumar Patil
      Pages: 94 - 104
      Abstract: The effects of the dietary antiparasitic drug emamectin benzoate (EB) on the biosafety and kidney, liver and intestine tissue histopathology of Oreochromis niloticus were assessed. Extended EB medication at the recommended dose (50 μg/kg biomass/day) for 21 days reduced survival, feed intake and biomass. A dose-dependent hepatotoxic, nephrotoxic and intestinal toxic effects of EB were noticed. Tubular degeneration, glomerulopathy, inflammation and necrotized renal interstitium in the kidney and glycogen-type vacuolation and cytoplasmic degeneration in the liver were observed. The intestine exhibited loss of absorptive vacuoles, mucinous degeneration, necrotized intestinal villi and absorptive region and inflammation. Lamina propria swelling was noticed in the higher-dosed groups. With the termination of medication, the pathological changes were reduced significantly, indicating the ability of fish to mount adaptive responses to recoup. The extended EB administration for 21 days is unlikely to produce adverse and irrevocable effects on fish at the recommended dose.
      PubDate: 2022-12-31
      DOI: 10.36547/ae.2022.4.4.94-104
      Issue No: Vol. 4, No. 4 (2022)
  • The Toxicity of Synthetic Pesticides in the Niger Delta Region: A Review

    • Authors: Tariwari Angaye, Kariye Lelei
      Pages: 105 - 108
      Abstract: The Niger Delta region of Nigeria with a vast and resourceful ecosystem which has welcomed diverse agricultural practices and crude oil exploration. On the other hand, being a wetland it has also become a breeding ground for major pests of agricultural and public health interest. One major problem is the proliferation of mosquitoes which have obliged the intense usage of pesticides. Typically, pesticides are agents meant to control targeted organisms (pests) that have caused adverse effects to man and his environment. Due to the excessive and inappropriate usage of pesticide they drift and get linked to contaminable environmental media such as water, air and soil. Human exposure can occur from inhaled spray drift, accidental ingestion, runoffs and in a broad sense through food chains. Pesticides find their way into different ecosystems causing adverse effects to non-target organisms, most of these non-target organism lacks metabolites to degrade these toxic pesticides residue in their cells and tissues; hence accumulate them and transfer them to other organisms via food chain which could cause acute and chronic effect. In addition, industrial and municipal effluents have a more toxic synergistic effect with pesticides. Toxic effects of pesticides can be controlled by; adhering to safety instructions from manufacturers of pesticides, thorough washing of agricultural produce, use of gloves and mask by the applicant and other safety measures. In addition, toxicological research and advocacy should be more active in the Niger Delta Region as well as proper and active regulation of pesticides usage to comply with minimal residual limits of pesticides and anthropogenic agents.
      PubDate: 2022-12-31
      DOI: 10.36547/ae.2022.4.4.105-108
      Issue No: Vol. 4, No. 4 (2022)
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Heriot-Watt University
Edinburgh, EH14 4AS, UK
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