| myxosporean infections in cultured tilapias in israel. | five new species of myxosporean parasite are described from cultured tilapias in israel. these are: myxosoma sarigi, myxosoma equatorialis, myxobolus israelensis, myxobolus agolus, and myxobolus galilaeus. the first four were found in hybrids of oreochromis aureus x oreochromis niloticus while myxobolus galilaeus was found in sarotherodon galilaeus. in addition, m. sarigi, m. israelensis, and myxobolus sp. were also found in s. galilaeus. in the light of the present study, the taxonomy of myxosp ... | 1985 | 3989749 |
| studies on the fungal infestation of five traditionally smoke-dried freshwater fish in ago-iwoye, nigeria. | samples of traditionally smoke-dried clarias gariepinus (burchell), chrysichthys nigrodigitatus (lacepede), sarotherodon galilaeus (trewavas), heterotis niloticus (cuvier) and heterobranchus bidorsalis (geoffroy) were obtained from oja oba market, ago-iwoye, nigeria and examined for fungal infestation. the fish samples incubated on potato dextrose agar (pda) for 7 days showed fungal infestation. fungi isolated and identified included mucor sp., aspergillus sp., rhizopus sp. and fusarium sp. six ... | 2002 | 12206317 |
| trematode metacercariae of fishes as sentinels for a changing limnological environment. | trematode metacercaria populations infecting cichlids in lake kinneret (sea of galilee) were used as sentinels for the changing limnological environment. parasitological data from 0+ cichlid fingerlings (tilapia zillii, oreochromis aureus, sarotherodon galilaeus) were collected from the northwest shore of the lake during 1999 to 2001 and compared with data obtained from 1982 to 1984. the results show that the composition of the metacercarial populations changed significantly between the 2 sampli ... | 2003 | 12911062 |
| food composition and feeding habits of some fresh water fishes in various water systems at abbassa, egypt, with special reference to snails transmitting diseases. | study of feeding habits of freshwater fishes collected from ponds at world fish center (iclarm) showed that the african catfish, clarias gariepinus and forskal catfish, bagras bayad had the highest proportion of full stomachs (31-58% & 44-45% respectively). in cichlid fishes, the rate of full stomachs was much lower, being 0.0-12.5% and showed higher incidence of empty stomachs that varied from 37.5% for oreochromis niloticus to 78.3% for sarotherodon galilaeus. food items were analyzed by the p ... | 2005 | 16083073 |
| a revised description of gyrodactylus cichlidarum paperna, 1968 (gyrodactylidae) from the nile tilapia, oreochromis niloticus niloticus (cichlidae), and its synonymy with g. niloticus cone, arthur et bondad-reantaso, 1995. | a recent infestation of gyrodactylus cichlidarum paperna, 1968 on yolk sac fry of nile tilapia, oreochromis niloticus niloticus (l.), in an isolated aquarium system in the u.k. resulted in high mortalities and provided an opportunity to study this species in greater detail. a tentative identification was made using the measurements and drawings of the ventral bar and hamuli provided in the original description; however, details on the morphology of the marginal hooks were lacking. a comparison o ... | 2007 | 17886742 |
| ichthyophthirius multifiliis infection induces apoptosis in different species of tilapia. | the parasitic ciliate ichthyophthirius multifiliis (ich) is one of the most important protozoan pathogens of freshwater fish worldwide. examination of 4 species of tilapia from the river nile recorded highest rate infection in oreochromis niloticus, followed by oreochromis aureus, sarotherodon galilaeus and tilapia zilli. by electron microscopy, apoptotic cells collected from tilapia species infected with "ich" showed an aggregation on the apical and basal parts of the ciliated and non-ciliated ... | 2009 | 19795773 |
| gyrodactylus species (monogenea: gyrodactylidae) on the cichlid fishes of senegal, with the description of gyrodactylus ergensi n. sp. from mango tilapia, sarotherodon galilaeus l. (teleostei: cichilidae). | the first record of gyrodactylus species nordmann, 1832 on the cichlid fish from senegal is reported. gyrodactylus parasites were found on four host species studied, hemichromis fasciatus, hemichromis letournaeuxi, oreochromis niloticus, and sarotherodon galilaeus. gyrodactylus cichlidarum paperna (bamidgeh 13:14-29, 1968) were collected from h. fasciatus, and its identity was confirmed based on the morphometrical comparison with the holotype specimens of g. cichlidarum. only one specimen of gyr ... | 2009 | 19838735 |
| fish as reservoirs and vectors of vibrio cholerae. | vibrio cholerae, the etiologic agent of cholera, is autochthonous to various aquatic environments, but despite intensive efforts its ecology remains an enigma. recently, it was suggested that copepods and chironomids, both considered as natural reservoirs of v. cholerae, are dispersed by migratory waterbirds, thus possibly distributing the bacteria between water bodies within and between continents. although fish have been implicated in the scientific literature with cholera cases, as far as we ... | 2010 | 20066040 |
| two new species of cichlidogyrus (monogenea: dactylogyridae) parasitizing the gills of african cichlid fishes (perciformes) from senegal: morphometric and molecular characterization. | two new species of cichlidogyrus are described from the gills of three species of african cichlids collected from the gambia river basin in the niokolo-koba national park, senegal: cichlidogyrus dracolemma n. sp. from hemichromis letourneuxi and cichlidogyrus nageus n. sp. from sarotherodon galilaeus and tilapia guineensis. the new species are recognized on the basis of morphological differences in the male copulatory organs (mcos) and apparent differences in the ssu rdna and its1 sequence data. ... | 2013 | 23403992 |
| gyrodactylus malalai sp. nov. (monogenea, gyrodactylidae) from nile tilapia, oreochromis niloticus (l.) and redbelly tilapia, tilapia zillii (gervais) (teleostei, cichlidae) in the lake turkana, kenya. | gyrodactylus malalai sp. nov. is described from the fin surface of cichlid fishes oreochromis niloticus (l.) and tilapia zillii (gervais) caught in lake turkana (kenya). the new species morphologically resembles gyrodactylus nyanzae paperna, 1973, but can be readily distinguished by the shape of the marginal hook sickles and the size of its hamuli. the sequence data of rdna spanning partial 18s, internal transcribe spacer 1 and 2 and the 5.8s gene is unique within genbank. genetically, as most s ... | 2012 | 22807048 |
| pesticide residues in water, sediment and fish from tono reservoir and their health risk implications. | levels of organochlorine (oc) and organophosphorus (op) pesticide residues in fish, sediments and water and their health risk associated with the consumption of the fish from the tono reservoir, ghana were evaluated. the analytical methods included solvent extraction of the pesticide residues using ultrasound sonication and soxhlet extraction and their subsequent quantification using gc equipped with electron capture detector and pulse flame photometric detector after clean-up on activated silic ... | 2016 | 27818887 |
| impact of climate change on the relict tropical fish fauna of central sahara: threat for the survival of adrar mountains fishes, mauritania. | four central sahara mountainous massifs provide habitats for relict populations of fish. in the adrar of mauritania all available data on the presence and distribution of fish come from pre-1960 surveys where five fish species were reported: barbus pobeguini, barbus macrops, barbus mirei, sarotherodon galilaeus, and clarias anguillaris. since 1970, drought has had a severe impact in the adrar where rainfall decreased by 35%. to investigate whether the relict populations of fish have survived the ... | 2009 | 19204792 |
| accumulation of metals in three fish species from the yaounde municipal lake in cameroon. | metals are dangerous to aquatic organisms and they can bioaccumulate in the food chain and represent risk for humans. in order to appraise their levels in fish species, concentrations of various elements including na, mg, k, ca, al, fe, mn, cr, ni, co, cd, cu, pb, zn, ba, and sr were determined in the muscles and gills of three fish species (oreochromis niloticus, sarotherodon galilaeus, and clarias sp.) which are more fished and consumed in the yaounde municipal lake, cameroon. according to che ... | 2015 | 26251061 |
| henneguya mbakaouensis sp. nov., myxobolus nounensis sp. nov. and m. hydrocyni kostoingue & toguebaye, 1994, myxosporea (myxozoa) parasites of centropomidae, cichlidae and characidae (teleosts) of the sanaga basin in cameroon (central africa). | the study of 102 teleost freshwater fishes of sanaga basin in cameroon revealed the presence of three myxosporean species, among which two were new. host fishes were of three families: centropomidae, cichlidae and characidae. new species were identified as henneguya mbakaouensis sp. nov., a gill parasite of lates niloticus and myxobolus nounensis sp. nov. found in the kidney and spleen of sarotherodon galilaeus and tilapia mariae. myxobolus hydrocyni kostoïngue & toguebaye, 1994, previously desc ... | 2000 | 11031757 |
| [larval clinostomum infection of cichlid fish in the lake of kompienga in burkina faso: a menace to haleutic exploitation and public health]. | clinostomum sp. is a trematode, a parasitic worm, of which the larva infest a number of species of wild fish. in intertropical africa and particularly in artificial lakes in the east of burkina faso, the infestation is especially observed in the cichlids fish. because cichlids constitute 80 to 90% of the fish catches, enzootic infestation could infringe upon the fisheries, and also adversely affect public health. for this epidemiological study conducted during the first three quarters of 1994, w ... | 2006 | 7640902 |