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      Prevalence, intensity and abundance of endoparasites in Oreochromis niloticusand TilapiazillifPisces: Cichlidae) from Asa Dam, Ilorin, Nigeria

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          Abstract

          ResumenLas enfermedades son un factor importante en la pesca, afectando especies silvestres y cultivadas. Mediante el uso de técni cas parasitológicas estándar se determinó la prevalencia, intensidad y abundancia de endoparásitos en 250 especímenes de dos cíclidos, Oreochromis niloticusy Tilapiazillide la represa Asa, Ilorin, Nigeria del Norte Central, entre febrero y agosto del 2013. Encontramos dos parásitos trematodos digenéticos; Heterostomum Euclinostomiumy Clinostomum tilapiae.La prevalencia más alta se registró en O. niloticus(35,9%) que fue infestado por C. tilapiae,mientras que la media más alta de intensidad se registró en T. zilli.No hubo relación (p>0,05) entre la carga parasitaria y tamaño de los peces (longitud y peso). Los machos fueron más infectados que las hembras. El estado de salud de las dos especies de peces no se vio afectado. La alta tasa de contaminación en el área de estudio podría ser responsable de la aparición del parásito registrado. Por lo tanto, se recomienda el control de la contaminación y la vigilancia regular de la masa de agua.

          Translated abstract

          AbstractDisease is an important factor in fisheries, affecting both wild and cultured species. Using standard parasitological techniques we determined the prevalence, mean intensity and abundance of en-doparasites from 250 specimens of two cichlids, Oreochromis niloticusand Tilapia zillifrom Asa dam, Ilorin, North Central Nigeria between February and August, 2013. We found two digenetic trematode parasites: Euclinostomium heterostomumand Clinostomum tilapiae.The highest prevalence was recorded in O. niloticus(35,9%) infested by C. tilapiae,while the highest mean intensity was recorded in T. zilli.There was no relationship (p >0,05) between parasite burden and fish size (length and weight). Male fish were more heavily infected than females. The overall health status of both fish species remained unaffected. The high rate of pollution noticed in the study area might be favoring parasite load. Therefore, pollution control and regular surveillance of the water body are advocated.

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          Most cited references46

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          Determinants of parasite species richness in Mediterranean marine fishes

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            A comparative study of helminth parasites from the fish Tilapia zillii and Oreochromis leucostictus in Lake Naivasha and Oloidien Bay, Kenya.

            The parasitic fauna of two fish species, namely gill-netted samples of 652 Oreochromis leucostictus and 448 Tilapia zillii from Lake Naivasha and Oloidien Bay was investigated during the period from the end of October 1995 to September 1996. Five larval helminth parasites were recovered including the nematode, Contracaecum sp., the acanthocephalan Polyacanthorhynchus kenyensis, the digenetic trematode, Clinostomum sp. and two cestodes, Amirthalingamia sp. and Cyclustera sp. Both prevalence and intensity of the infection of these helminths increased in larger sized fish, whereas male fish were more heavily infected than females. No seasonality in infection level were observed. The health status of both fish species remained unaffected, although O. leucostictus from Oloidien Bay which harboured heavy infections of Contracaecum exhibited stuntedness and the lack of fatty deposits around the digestive caecum.
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              Intestinal helminths of the fishes of Owa stream, South-West Nigeria

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                Author and article information

                Contributors
                Role: ND
                Journal
                cinn
                Cuadernos de Investigación UNED
                Cuadernos de Investigación UNED
                Universidad Estatal a Distancia de Costa Rica
                1659-4266
                June 2015
                : 7
                : 1
                : 67-70
                Affiliations
                [1 ] University of Ilorin Nigeria
                Article
                S1659-42662015000100067
                0ec5cf5e-e892-4a90-a24d-fbd3d428df67

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 International License.

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                SciELO Costa Rica

                Self URI (journal page): http://www.scielo.sa.cr/scielo.php?script=sci_serial&pid=1659-4266&lng=en
                Categories
                Education, Scientific Disciplines
                Environmental Sciences
                History Of Social Sciences
                Political Science
                Soil Science

                Political science,General history,General environmental science,General education,Soil
                parásitos,flatworms,parasites,platelmintos, cíclidos,Asa Dam,represa Asa,Nigeria,cichlids

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