tion of the Nwanedzi Dam, Limpopo Province. Features of Parasitic Fauna of the Common Ruff Gymnocephalus cernuus (L.) in Tsipo-Tsipikanskiye Lak... Parasite community and mortality of overwintering young-of-the-year roach (Rutilus rutilus). As shown, in Table 1, 10 parasite species are specialists, occur, ring only in/on clariids while the remaining, species are generalists, known to infect other fish, The component parasite population showed an, aggregated distribution, typical of most parasite, distributions within their hosts (Fig. Ellender BR, Weyl OL. a low Sorenson’s quantitative similarity index. The present study deals with the survey of endoparasites from Schilbe intermedius (silver catfish) at the Nwanedi-Luphephe Dams from July 2009 to May 2010. This was done to prevent escape of emerging adult mosquitoes and incoming egg laying mosquitoes. This study investigated microbial load and diversity of gastro-intestinal tract of the cultured Nile tilapia (Oreochromis niloticus) and hybrid catfish (Clarias gariepinus ♀ x Heterobranchus bidorsalis ♂) in Ilorin metropolis, Nigeria.A set of apparently healthy Nile Tilapia and hybrid catfish were obtained from a fish farm in Ilorin metropolis. ABSTRACT Studies were carried out to determine the haematological characteristics of Clarias gariepinus healthy specimens were obtained from Gubi dam. 24, No. Found inside... predation could have also affected stocks of several non-cichlid fishes such as Bagrus docmak, Synodontis victoriae, Xenoclarias eupogon and lacustrine populations of the anadromous species Barbus altianalis and Clarias gariepinus. Clarias gariepinus andHeterobranchus longifilis were successfully hybridized to produce reciprocal F1 progeny during a two-year study.C. Important morphological findings include: the observation of only one claw on the maxilla; first time findings and descriptions of the nuchal organ, upper and lower lips, the fifth pair of legs and circular openings on all appendages. arabiensis/culicine larvae were introduced into the 1st, 2nd and 3rd in triplicates. sp., and Quadriacanthus zuheiri n. sp. The parasite species included five monogeneans (Gyrodactylus rysavyi, Macrogyrodactylus clarii . ... (Boomker 1994a;Moyo et al. However, mean, parasite prevalence, mean species richness and, mean abundance of the infracommunities and, component community were all higher in the, nematodes and digeneans) were numerically, dominant. This could be due to the lower motility rate and water surface resting behavior of An. Ph.D. thesis, University of the North, South Africa. Fish was exposed to five different concentrations: 0.2, 0.4, 0.8, 1.6, and 3.1% of the effluent for 7, 14, and 28 days. Found inside – Page 305ence of guppies was important in ecological terms , given the much more potential ecological effects of pollution , overfishing , and ... idellus Walking catfish Clarias batrachus Dumbo catfish Clarias gariepinus Source : Green et al . The infra, community abundance averaged 172.2, ranging, from 20 to 592 parasite specimens in a single host, (Table 2). Numeric, dominance was determined using the Berger-, community was described based on the Shannon-, Wiener index. Privacy Molecular Biology and Evolution, 35(6), 1547-­1549. None of the fish examined during this study was in a notably poor state of health due to parasitism. Nutrient requirements of catfish (Siluroidei). Welfare is a multidimensional concept that can be described as the state of an animal as it copes with the environment. Comparative evaluation of the acute toxicity and behavioural changes in Clarias gariepinus following exposure to dichlorvos and primextra pesticides. Ltd, Pretoria) for analysis of selected parameters: suspended solids, orthophosphates, ammonia, A total of 45 (24 females and 21 males) host speci, mens were collected during the four sampling, the catfish ranged from 350 to 910 mm SL (mean ±, standard deviation: 519 ± 134 mm SL). No pathological effects were observed in the histological sections of the brains of B. lateralis that were infected with diplostomids, except for the presence of red blood or rodlet cells. were the dominant species, constituting 56% of the total metazoans (100% prevalence, mean abundance and mean intensity 96.3). This study contributes to a better understanding of African dactylogyrid diversity and provides the first molecular characterization of Quadriacanthus spp. Values were considered significant when p < 0.05 or when 95 % CI values did not include zero. 2). Ogaga Augustine Aghoghovwia, Preyo Isaac Morgan, Sylvester Chibueze Izah (2019) Behavioral Response and Acute Toxicity of Fingerlings of African Cat Fish, Clarias Gariepinus Exposed to Paraquat Dichloride. Acute toxicity effects of ethanol extract of Alchornea cordifolia leaf on Clarias gariepinus fingerlings was investigated over a 96hr exposure period as a potential organic piscicide.A static toxicity bioassay was performed after preliminary trial tests (range-finding test) were conducted. Parasites and environmental features could synergistically act as stressors to the health of their hosts. The effects of Brazilian tea (Stachytarpheta jamaicensis) and Bitter kola (Garcinia kola) seed meal on the growth and gonad development of the African catfish Clarias gariepinus (Burchell, 1822) more. Found inside – Page 327However , only in the African catfish ( Clarias gariepinus ; family Clariidae ) is there evidence that these detected hormonal compounds have pheromonal functions . Spawning of Clarias , which often occurs at night and in turbid water ... 186(4):507-534. & Moreau, Y. Found inside – Page 593The role of diel inshore movements by Clarias gariepinus ( Pisces : Clariidae ) for the capture of fish prey . Trans . ... In : B.R. Davies and K.F. Walker ( Editors ) , The Ecology of River Systems , Monographiae Biologicae , Vol . 60. 2008;Moyo et al. The richest and most diverse helminth communities were found in the native carnivorous goodeid Alloophorus robustus. High summer water temperature was strongly associated with high digenean infections. Contrary to other Clarias species, Clarias gariepinus has a high number of gill rakers varying from 24-110 (Ref. (7.5–10 m/Scm), total dissolved solids (40–54 mg/l), suspended solids (4.0–6.0 mg/l), ortho-phosphate, (<0.2 mg/l), ammonia levels (<0.2–0.5 mg/l) and, nitrates (<0.2–0.4 mg/l) are indicative of the, the Nwanedi-Luphephe Dams indicate that they, are a rich assemblage, with high levels of species, richness, diversity and great variability in abun, dance values of most constituent species. Fish Physiology and Biochemistry DOI 10.1007/s10695-006-9111-8. The observation that C. gariepinus feeds on Biomphalaria pfeifferi (the intermediate host of Schistosoma mansoni) [11] also makes this fish a good candidate for biological control agent against the mosquitoes and snail intermediate hosts as their habitats overlap in many cases. Advantages of larval control for African malaria vectors: low mobility and behavioural responsiveness of immature mosquito stages allow high effective coverage. We would also like to duly acknowledge the Aklilu Lemma Institute of Pathobiology for permission to use its laboratory and pond as well as for provision of all the necessary materials needed for the experiment. Found inside – Page 190Chromolaena odorata , 26 , 30 Cichla ocellaris , 119 Cichlids , 94 , 116 Cirrhinus mrigala , 107 Citrullus vulgaris , 58 Clarias , 91 Clarias gariepinus , 91 , 93 Clematis vitalba , 26 Climax , 37 , 50 Clupeid fish , 118 Coastal ... Small size C. gariepinus consumed greater number of culicine than anopheline larvae during night hours (% consumed = 100 vs. 96.9, p < 0.01). Clarias gariepinus was found to feed on most mosquito larvae it encountered both in the laboratory and in the semi-field conditions. dency to feed on benthic organisms and detritus. Inadequate food is supplementary food given for each C. gariepinus, which was about 2 % of each fish body weight while adequate food was about 4 % of each fish body weight as previously used [11]. A concept of 2 thresholds, a critical condition factor (attained by a temperature-induced energy deficiency), and a condition-dependent critical infection intensity, which determine winter mortality of YOY, is suggested. Article  Rozendaal J. Vector control: methods for use by individuals and communities. Similar results have been, obtained for other species of freshwater fish, ity of the species did not present differences in, either parasitic burden that could be related to, could possibly shed light upon such aspects, since, it should be verified if changes on either male or, female hosts behaviour occur regarding breeding, seasons, feeding habit and hormonal levels, which, could change the ecological niche (Hayward, firming that they have the same intermediate, hosts. Adewolu MA, Adeniji CA, Adejobi AB. C. gariepinus reaches maturity towards the end of the second year (350 mm TL, rarely towards the end of the first year, 240 mm TL). 2, pp. Eyes small. Open Journal of Ecology Vol.04 No.14(2014), Article ID:50902,9 pages 10.4236/oje.2014.414073. In species, composition, the sharptooth catfish possessed, assemblages with relatively high levels of qualita, tive similarity and this may be attributed to high, Recent years have seen investigations into latitu, dinal richness gradients of parasites (Pérez-Ponce. All recovered nematodes are recorded for the first time herein in association with X. laevis, except for the genus Contracaecum, members of which have previously been recorded from invasive X. laevis from California and Chile. Hecht T, Appelbaum S. Observations on intraspecific aggression and coeval sibling cannibalism by larval and juvenile Clarias gariepinus (Clariidae: Pisces) under controlled conditions. 2014;9:117–32. I. Found inside – Page 124SELECTIVE PREDATION OF LAKE KINNERET ZOOPLANKTON BY FINGERLINGS OF CLARIAS GARIEPINUS . Verh . Int . Ver . Limnol . ... 90-001135 Hamilton , J. D. RECENT HUMAN INFLUENCES ON THE ECOLOGY OF LOCH LOMOND , SCOTLAND . Verh . Int . Ver . C. gariepinus [8, 3, 1013]-. Google Scholar. Although, rich tropical metazoan parasite communities of, freshwater fishes have been described (Kennedy, tropical freshwater fishes have species-poor. 2004. However, the gains are threatened due to the emergence and spread of vectors that are physiologically and behaviourally resistant to the insecticides [1–3]. 2007;7:199. site communities in tropical fishes (Kennedy 1995; Salgado-Maldonado & Kennedy 1997). It was not until the seminal publications of Dogiel (1961, 1964), however, that attention was directed primarily to their ecology. LO, C.M., MORAND, L.S. Article  arabiensis larvae were introduced into each of the four clean ponds. Three hundred and thirty eight nonempty stomach samples were analysed using frequency of occurrence and volumetric methods of analysis. Post juveniles of Clarias gariepinus and Oreochromis niloticus were exposed to 10% 96hr-LC 50 values of Pb(NO<SUB>3</SUB>)<SUB>2</SUB> and ZnCl<SUB>2 </SUB>against each . Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Many endoparasitic helminths have been reported to infect C. gariepinus (see Kuchta et al., 2018) suggesting that the fish plays an important role in life cycles of many metazoan parasites, particularly helminths, in freshwater ecosystems. Two features characterize the helminth fauna of the Balsas River basin fishes: (1) a predominance of nematode and trematode species coupled with a scarcity of monogeneans and acanthocephalans; and (2) all helminths found had previously been reported from other regions of Mexico; therefore the composition of the helminth fauna of the fishes of the Balsas River drainage is not very distinct from that of fishes from other previously studied freshwater basins in Mexico. The dominance of host-, specific parasite species in the sharptooth catfish confirms that its metazoan fauna has a, nants of richness in metazoan communities of the sharptooth catfish from dams in an, helminth communities of fish to analyse parasite, how these communities are structured and which, processes are involved in maintaining these struc, been confined to the northern temperate regions, tropics, work from South America, particularly, Brazil (Alves & Luque 2001; Salgado-Maldonado, ined the composition and diversity of parasite, communities in tropical fish. Found inside – Page 121Fishes of economic importance include catfish (Chrysichthys nigrodigitatus, Clarias gariepinus), African bony tongue (Heterotis niloticus), among others. According to the list from the Statistics Unit of the Federal Department of ... tential interactions between the intestinal helminths. The difference between the number of culicine and anopheline larvae consumed by small size C. gariepinus was not significant during light hours. showed positive covariations between their abundances. 2001;61:185–94. Found insideEcological Aspects of Stream Regulation : Responses in Downstream Lotic Reaches . " Water Pollution and Management ... The Ecology of the Catfish Clarias gariepinus and Clarias ngamensis in the Shire Valley . Malawi Journal of Zoology ... digeneans; Anderson (1992) for nematodes; cestodes; Marx & Avenant-Oldewage (1996) for, the copepod; Avenant-Oldewage & Knight (1994), The ecological terminology used is that recom, the parasite community were performed at the. www.who.int/malaria/publications/atoz/9789241505604/en/, http://creativecommons.org/licenses/by/4.0/, http://creativecommons.org/publicdomain/zero/1.0/, https://doi.org/10.1186/s12898-016-0081-0. Five inclusion levels of Baobab Seed Meal (BSM) to replace soya bean meal were studied at 0, 5, 10, 15 and 20% dietary protein. sp., while the tube in all other congeners studied is comparatively small and with an oblique tapering termination. Specimens were collected from the Vaal Dam and Vaal River Barrage in the Gauteng Province, South Africa, for a two-year period. Manual on environmental management for mosquito control: with special emphasis on malaria vectors. Journal of Crustacean Biology All host specimens were parasitized by one or more metazoan, parasite species. the first intermediate host for the digeneans. The fishes used in the experiment were given the humane treatment of animals used in research investigation. The authors declare that they have no competing interests. Larger fish had larger parasites than smaller ones. Hence, it can be used as an alternative mosquito control agent in Ethiopia where the breeding habitats are small and localized. Differences in the biomarker levels and body condition between uninfected fish and those infected with M. nkomatiensis or G. pedatum were insignificant indicating a low effect of the digenean parasites on oxidative stress biomarkers and body condition in the fish. On the other hand, all the mosquito larvae in the experimental groups in which C. gariepinus introduced were consumed by the fish. Tilapia sparrmanii collected from the Orange River were not infected with diplostomids. Aim: To determine the toxicity and histological effects in Clarias gariepinus fingerlings exposed to different concentrations of liquid soaps. The family Clariidae is divided into two genera viz: Clarias and Heterobranchus. Ph.D. thesis, (Monogenea: Gyrodactylidae), a new gyrodactylid, of metazoan parasites of the African catfish, (Copepoda, Lernaeidae), with notes on its occur, MASHEGO, S.N. A total of 7748 parasites, belonging to 17 metazoan species, was recorded from 45 specimens of Clarias gariepinus (Burchell, 1822) caught from the Nwanedi-Luphephe Dams, Limpopo River System, South Africa. The most frequent number of, parasite species observed per host was four (in 16, hosts) and the highest number of parasite species, (10) was observed in one host (Fig. J Zool. Terms and Conditions, Over the past 100 years, several fish species have been documented to feed on mosquito larvae in different parts of the world among which many are proved effective [6, 7]. and Tanqua sp. Provided by the Springer Nature SharedIt content-sharing initiative. Found inside – Page 172Reproduction in the catfish ( Clarias gariepinus ) in the Hardap dam , South West Africa . ... An ecological invstigation of the economically viable fish species in certain dams in Lebowa , South Africa . M.Sc. Thesis . Nematode parasites of, MOKGALONG, N.M. 1996. All but one species (B. acheilognathi)exhibit narrow host specificity, being limited either to one host species (K. gordoni in Heterobranchus bidorsalis and T.martinae in Bagrus meridionalis) or one host genus (I. ichthybori in Ichthyborus spp., P. polypteri in Polypterus spp. Trematode metacercariae were. Access supplemental materials and multimedia. 1977. During the light hours, larval consumption by small size fish (83.7 %) was greater than the consumption by the large size fish (78.6 %). Infra- and component community species richness and diversity were high. Data were double entered in excel-sheet and analyzed using STATA version 11 (STATA Corporation, College Station, Texas, USA). 9000 ha were proclaimed a nature reserve in 1979. the dominant parasites in all the studied samples. A brief history of freshwater fish parasitology in Southern Africa, 2015 Distribution of Contracaecum larvae in freshwater fish from northern regions South Africa Tavakol Suppl Info.
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