histopathology of gills and livers of juvenile Clariasgariepinus(Burchell, 1822)exposed to aqueous extracts of Carica papaya dry seeds under laboratory conditions
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Date
2021-04-06
Authors
Abubakar, Musa
Journal Title
Journal ISSN
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Publisher
Library and Publications Committee, University of Ilorin.
Abstract
African Sharptooth, C.gariepinus (mean weight 11.81g±0.23g and mean
length 9.8cm ± 0.2) were exposed to graded concentration (0, 150, and 180,
210 and 240mgL-1) of aqueous extract of C. papaya dry seeds in triplicates for
4 days. They were fed a 25% crude protein diet at 1% biomass half at 800 and
1600h. Experimental design was a completely randomized type. The control
fish’s gill histology revealed normal histomorphology with intact blood
vessels, gill slits and supporting cartilage apparent. Exposed fish showed
degeneration of the gill filament, hypertrophy, hyperchondrial of the gill arch
and lesion. Normal tubules, haematopoietic structures, and a portal triad with
a dilated portal vein were found in the livers of control fish. The exposed fish
livers showed vacoulation, steatosis, necrosis and degeneration of hepatocyte
degeneration. The findings suggest that pathology of Clarias gariepinus’ gill
and liver could be useful biomarker for assessing aqueous extract of Carica
papaya dry seeds toxicosis.
Description
Keywords
Gill, liver, histopathology, Carica papaya and hepatocytes