Pattern of renal pathology in fish from Al-Hassa waterways, Saudi Arabia

Abstract

Pollution of aquatic environment is a great concern worldwide. The teleostean kidney is one of the first organ to be affected by contaminants in water. The aim of this study is to assess histological changes of Oreochromis niloticus kidney collected from spring canals in Al-Hassa, Saudi Arabia. We report histological alterations in the kidney tissue of fish collected from three sites, namely Al-Jawhariya (site #1), Um-Sabah (site #2) and Al-Khadoud spring (site #3). The histopathological studies revealed relative differences in the severity of organ lesions among the three sites. The overall results showed that kidney architecture of fish samples was markedly disrupted. The major symptoms were dilation of the glomerular capillaries, reduction of Bowman's space, degeneration of tubular epithelium, tubule cast deposition, and accumulation of pigmented macrophages (i.e., melanomacrophages). The histological damage in the kidney of O. niloticus is an evidence of the poor environmental quality of these spring canals. It appears that these wetland areas are still threatened by human activities and environmental degradation.

Effect of Biofilm of Aeromonas Hydrophila Oral Vaccine on Growth Performance and Histopathological Changes in Various Tissues of Striped Catfish, Pangasianodon Hypophthalmus (Sauvage 1878)

“…Most common alterations found in the kidney of fishes exposed to water contamination are tubule degeneration and changes in the corpuscle, such as dilation of capillaries in the glomerulus and reduction of Bowman´s space (Takashima and Hibiya, 1995). Our results are in accordance with Moneim et al (2019) reported disruption of kidney tissues in wild captured Nile tilapia, Oreochromis niloticus.…”