Comparative Study on Some Histological and Biochemical Aspects in Fishes From Qarun and Bardawil Lakes

Abstract

M^l e specimens of Tilapia zillii. Magil cephalus. Liza ramada and Soiea egyptiaca were collected from Ayoub and Shakshouk Stations at the west and middle of Qarun Lake. At the same period, other male specimens of M. cephalus. L. ramada and Solea vulgaris were collected from Bardawil Lake. The histological and biochemical findings can be summarized as follows: Histological examination of gills, liver and kidney of the four studied fish species in both lakes showed variable pathological changes. Bardawil Lake fish showed more damage. The histopatho logical features are discussed, Biochemical significant differences were found between the fishes collected from the two stations of Qarun Lake. T. zillii showed significant higher values of liver total proteins (TP) and inorganic phosphorus (P) than the other three species, while L. ramada showed significant higher values of liver alkaline phosphatase (ALP) and calcium (Ca). Muscle total cholesterol (TCh), low-density lipoprotein (LDL) and Ca were higher in M cepkalus but TP, high-density lipoprotein (HDL) and P in L. ramada; ALP and total lipids (TL) in Solea egyptiaca and triglycerides (TG) in Z zillii, Mugil cephalus of Bardawil Lake showed significant higher values of muscle TP, ALP, TL, TG, HDL, LDL and Ca than the other two fish species-Muscle TCh and P were significantly higher in 5. vulgaris and L. ramada respectively. Also S. vulgaris showed significant higher values of liver TP and P and L. ramada showed significant higher values of liver ALP and Ca. 2 Hanan S* Gaber et ai Significant differences were detected between the three fish species collected from both Qarun and Bardawil Lakes. Liver P was higher in the three fish species of Bardawil Lake than Qarun Lake. while liver Ca was higher only in M. cephalus and lower in both L. ramada and S. vulgaris. Liver TP and ALP were lower in M cephalus. and L ramada respectively, while liver TP of L. ramada of Bardawil Lake was higher than that of Qarun Lake. Muscle TL and P in one hand and TG and Ca in the other hand were significantly lower and higher respectively in the three fish species of Bardawil Lake than that of Qarun Lake. The other muscles parameters in the three fish species recorded either significantly higher or lower values between the two lakes.

Effect of Some Environmental Factors on the Food and Feeding Habits of the Cichlid Fish, Tilapia zillii, Inhabiting Lake Qarun, Egypt.

“…In the present study, the highest average value of surface water temperature was recorded at Village 8 during summer and the lowest occurred at Nema Island during winter. The present findings were nearly similar to that obtained by Elgaid (1980); Abdel-Monem (1991); Ahmed (1994); Khalaf-Allah (2001); Gaber et al (2004); Abdel-Satar et al 2010; Rabeh (2012) and Afifi (2015).…”

“…The present study indicated that, the highest values of hydrogen ion concentrations were recorded at Village 8 Station during summer (8.67±0.15) and autumn (8.76±0.02) and the lowest values were detected at Ezbet Abd El-Alim Station during spring (7.96±0.09) and winter (7.96±0.12). This observation was matching with Gaber et al (2004); Abou El-Gheit et al (2012) and Afifi (2015) and not matching with that obtained by Rabeh (2003); Rabeh & Fareed (2006) and Rabeh (2012) whom recorded that, the low values of hydrogen ion concentrations during summer; this may be due to the degradation of organic matter in the sediment.…”