Condition factor and gastrointestinal parasitic fauna of three fish species as stress indicators in lekki lagoon, Lagos, Nigeria. | ||||
| Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology | ||||
| Article 1, Volume 7, Issue 1, December 2015, Page 1-13 PDF (465.18 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eajbse.2015.14489 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Akinsanya Bamidele; Kuton , Minasu Pentho; Saliu Joseph Kayode; Oyebola Lambe; Ukwa Uche David | ||||
| Department of Zoology, University of Lagos, Nigeria | ||||
| Abstract | ||||
| Host condition factor and Gastrointestinal protozoa and helminth parasites in Synodontis clarias, Synodontis filamentosus and Chrysichthys nigrodigitatus in Lekki lagoon, Lagos, Nigeria were investigated from September, 2014 to February, 2015. Eighty specimens each of both Synodontis clarias and Chrysichthys nigrodigitatus and fifty of Synodontis filamentosus were examinedfrom Lekki lagoon and dissected for parasitological investigation The. Condition factors of all individual fishes were determined. Median condition (K < 1.41 and K > 1.41) for Synodontis clarias, (K < 2.14 and K > 2.14) for Synodontis filamentosus and (K < 1.49 and K > 1.49) for Chrysichthys nigrodigitatus were used in grouping the individuals. Heterogeneous infection of intestinal protozoa in C. nigrodigitatus were greater among the low condition individuals; 0.18 compared to high condition individuals with 0.10. This also aplies to S. clarias, low condition individuals; 0.28, while high condition individuals had infection rate of 0.13. S. filamentosus showed a different trend, the rate of infection were greater among the high condition individuals; 0.15, compared to low condition of 0.10. The rate of infection of parasitic helminths in C. nigrodigitatus, S. clarias and S. filamentosus were higher among low condition individuals compared to high condition individuals. High condition individuals of the fish species harbor more parasites than low condition individuals. Infected individuals of low condition factor (K < 1.49) of C. nigrodigitatus had a greater histopathological alteration index (HAI, 12.0) compared to the high condition individuals (HAI, 6.0). These individuals had from mild to severe ulceration of the mucosa and congestion of the blood vessels. In infected individuals of low condition factor (K < 1.41), (K < 2.14) of S. clarias and S . filamentosus, there were mucosal edema and haemorrhage in their intestinal walls. They also had greater histopathological alteration index (HAI, 24.0), (HAI, 18.0) compared to the high condition individuals (HAI, 10.0) and (HAI, 4.0) respectively. These low condition infected individuals in the population are multi-stressed and have showed significant pathological responses in their tissues. | ||||
| Keywords | ||||
| Condition factor; Intestinal helminths; protozoa; Histopathological alteration index | ||||
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