Histopathological, Haematological and Biochemical Indices of Clarias gariepinus (Burchell, 1822) Parasitized by Endoparasitic Fauna in Fish Farm of the Northeastern Egypt

Abstract

Knowledge of the endemic fauna of parasites in fish are of great importance, parasites could synergistically act as stressors to health of their hosts. The objectives of this study were to evaluate prevalence and effect of parasites on hematological, biochemical indices, injury of tissues and length weight relationship of Clarias, gariepinus. Water quality variables were measured and fishes were collected each seasons for examination most common parasites in infected fishes at Abbasa Fish Farm, Egypt. Results indicated that high summer water temperature was strongly associated with parasites infection. The hematological and biochemical analysis showed significant reduction in red blood cells (RBCs) count, hemoglobin (Hb) value, packed cell volume (PCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC), total protein, Albumin, Globulin and A/G ratio, while total white blood cells (WBCs) count, mean corpuscular volume (MCV), aspartate aminotransferase activity (ASAT), alanine aminotransferase activity (ALAT), urea, creatinine, uric acid and glucose were significantly increased in infested catfish. On other hands, histopathological examination of infected fish indicated, organs most affected by infection of parasites. Overall the tendencies observed in data showed the parasites have a strong effect on host fish and drifts observed for all variables showed a strong seasonal decoration.

Fish Parasites and Heavy Metals Relationship in Wild and Cultivated Fish as Potential Health Risk Assessment in Egypt

“…Total ammonia was also found to be higher in fish farms than in lakes, which might be due to large fish stocks, fish excretion, and the breakdown of extra un-consumed diet, all of which are ammonia sources in ponds. These findings corroborate previous research (Konsowa, 2007;Radwan et al, 2021;Radwan, 2022).…”

“…Dissolved oxygen and pH, on the other hand, displayed a strong negative relation with the Parasites Prevalence (PP) in lake and farmed Nile Tilapia. This observation agrees with Zargar et al (2012) and Radwan et al (2021) who observed strong negative relationships between parasite presence frequency and pH and DO concentrations. Meanwhile, these findings contradict the findings of Sosanya (2002) who found a positive relationship between water contaminants and parasite prevalence rates.…”

“…Boyd (1985) indicated a safe H 2 S concentration for freshwater fish of 0.002 mg/L. The correlation coefficient of physicochemical elements with parasite prevalence in this study implies that the measured factors have an influence on the PP (Wali et al, 2016;Qayoom and Shah, 2017;Radwan et al, 2021). Turbidity, total alkalinity, NO 2 , NO 3, and phosphate were shown to be substantially related to PP (Abba et al, 2018;Ojwala et al, 2018).…”

Impact of applying albendazole and Levamisole against some intestinal parasites in fish

“…Egyptian expansion in fish aquaculture requires improvement in fish health management, (Al Malki , 2021). Knowledge of endemic fauna of helminths in fish is of great importance, parasites act as stressors to the health of their hosts, (Radwan et al 2021). Parasitic infection in fish is prevalent all over the world and of particular importance in tropical areas (Soliman & Nasr, 2015).…”

Parasitological indicators, haemato-biochemical alternations, and environmental risks of heavy metals in cultivated and wild freshwater catfish, Egypt

“…In general, hematological investigations are utilized in human and veterinary studies to assess normal vital signs and to diagnose disorders resulting from a variety of causes, including environmental stress, metal pollution, parasite infections, nutrition, and the genotoxic impact of pollutants (Esmaeili, 2021). Fish blood is susceptible to pollution-induced damage, and alternations in hematological markers, including packed cell volume, erythrocyte count, and hemoglobin concentration, may be employed to detect damage induced by pollutants, including heavy metals (Radwan et al, 2021). Biochemical markers in fish are also sensitive to possible adverse effects of metal accumulations.…”