Tag Archives: Clarias Gariepinus

Prevalence of Gastrointestinal Helminth Parasites of Clarias Gariepinus at River Gudi, Akwanga Local Government Area of Nasarawa State, Nigeria (Published)

A total of 100 Clarias gariepinus (African Catfish) were purchased between April and June 2017 from Artisanal fishermen at River Gudi. Akwanga Local Government Area of Nasarawa State to determine the prevalence of gastrointestinal helminth parasites of Clarias gariepinus. The fish were subjected to parasitological study in Zoology Laboratory, Nasarawa State University Keffi.. Out of this 100 fish sample, 63 (63%) were infected and a total of 90 helminth parasites recovered. Three species of helminth parasites were isolated namely Camallanus (41%), Diphyllobothrium latum (29%) and Capillaria (20%).There is a significant different (p>0.05) in the infection rate of male and female fish. The highest fish organ infected was intestine (36%) follow by the stomach (33.3%), next was the oesophagus (23.3%) and finally Rectum (6.6%).There is a significant different in the gastrointestinal helminth parasites of Clarias gariepinus at different site of gastrointestinal tract (P< 0.05). The infection rate in relation to body length was highest 90.3% at 26- 30cm.There is a significant difference in the gastrointestinal helminth parasites of Clarias gariepinus in relation to body length (p<0.05) .Gastrointestinal helminth parasites probably capable of reducing the productivity of fish in River Gudi are hereby presented in the light of these findings.

Keywords: Clarias Gariepinus, Gastrointestinal, Helminth Parasites, River Gudi

ACUTE TOXIC EFFECT OF QUA IBOE LIGHT CRUDE OIL ON THE GILLS OF CLARIAS GARIEPINUS JUVENILES (Published)

The effect of the water soluble fraction of Qua Iboe Light crude oil on the survival of the Juveniles of African freshwater catfish (Clarias gariepinus) was investigated under laboratory conditions for 96 hours. A total of ten (10) juveniles of C. gariepinus each were grouped into twelve (12) test aquaria and held for 24, 48, 72 and 96 hours in six (6) different concentrations of Qua Iboe Light Crude oil (0, 10, 20, 30, 40 and 50mg/l) . The experiment were conducted in two batches (A and B). No mortality was recorded in the 0-20mg/l of toxicant, 40% mortality was recorded in the 30mg/l of toxicant giving 60% survival at the end of the 96 hours of test. In the 40mg/l of toxicant 90% mortality was recorded, giving 10% of the organism surviving at the end of the 96 hours test, while in the 50mg/l of toxicant, 100% mortality was recorded leaving 0% survivor at the end of the 96 hours bioassay. The 96 hours LC50 for both batches was 30.12mg/l. Toxicant exposure induced behavioural changes such as abnormal and uncoordinated swimming movement. It was observed that mortality was concentration – dependent: the higher the concentration, the higher the mortality. There was no significant differences in mortalities between the two batches (P>0.05) leading to the conclusion that the WSF of Qua Iboe Light Crude oil in the Nigerian coastal waters may have adverse effects on aquatic fauna and flora. However, it was observed that the WSF of Qua Iboe Light Crude oil had severe impacts on the gills of the test organisms resulting in gill lamellae disintegration and erosion which may be attributed to the cause of the mortality in the test organisms

Keywords: Acute Toxicity, Clarias Gariepinus, Gills, Juveniles, Qua Iboe Light Crude Oil

Acute Toxic Effect of Qua Iboe Light Crude Oil on The Gills of Clarias gariepinus Juveniles (Review Completed - Accepted)

The effect of the water soluble fraction of Qua Iboe Light crude oil on the survival of the Juveniles of African freshwater catfish (Clarias gariepinus) was investigated under laboratory conditions for 96 hours. A total of ten (10) juveniles of C. gariepinus each were grouped into twelve (12) test aquaria and held for 24, 48, 72 and 96 hours in six (6) different concentrations of Qua Iboe Light Crude oil (0, 10, 20, 30, 40 and 50mg/l) . The experiment were conducted in two batches (A and B).. No mortality was recorded in the 0-20mg/l of toxicant, 40% mortality was recorded in the 30mg/l of toxicant giving 60% survival at the end of the 96 hours of test. In the 40mg/l of toxicant 90% mortality was recorded, giving 10% of the organism surviving at the end of the 96 hours test, while in the 50mg/l of toxicant, 100% mortality was recorded leaving 0% survivor at the end of the 96 hours bioassay. The 96 hours LC50 for both batches was 30.12mg/l. Toxicant exposure induced behavioural changes such as abnormal and uncoordinated swimming movement. It was observed that mortality was concentration – dependent: the higher the concentration, the higher the mortality. There was no significant differences in mortalities between the two batches (P>0.05) leading to the conclusion that the WSF of Qua Iboe Light Crude oil in the Nigerian coastal waters may have adverse effects on aquatic fauna and flora. However, it was observed that the WSF of Qua Iboe Light Crude oil had severe impacts on the gills of the test organisms resulting in gill lamellae disintegration and erosion which may be attributed to the cause of the mortality in the test organisms

Keywords: Acute Toxicity, Clarias Gariepinus, Gills, Juveniles, Qua Iboe Light Crude Oil

Nutritional Comparison of Captured Clarias Gariepinus and Oreochromis Niloticus (Published)

Nutritional comparison was done between two fresh water fish species including Clarias gariepinus and Oreochromis niloticus so as to establish the fish with better nutritional quality among the two fish species. Three replicates of each species was slaughtered and taken to the laboratory for proximate analysis. A total of 6 live Clarias gariepinus and Oreochromis niloticus weighing 700.0 + 7.0g and 130 + 5.0g respectively were used. Three freshly slaughtered fish of each sample were selected for proximate composition. Clarias gariepinus was superior to Oreochromis niloticus with crude protein composition of 16.375% which is significantly (P < 0.05) different from that of Oreochromis niloticus which is 14.328%. Clarias gariepinus lipid is also significantly (P < 0.05) different from that of Oreochromis niloticus with Clarias gariepinus having lipid of 2.033% and Oreochromis niloticus having 1.298% lipid. There was also significant (P < 0.05) difference in the moisture content between the two fish species with Oreochromis niloticus having the highest moisture content of 78.325% and Clarias gariepinus having moisture content of 75.085%. However, there was no significant (P < 0.05) difference in their ash content. This study shows the superiority of C gariepinus over O niloticus thus the current trend where C. gariepinus is the most cultivated fish species in Nigeria should be sustained.

Keywords: Captured Fish, Clarias Gariepinus, Nutritional Comparison, Oreochromis Niloticus