{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,27]],"date-time":"2026-04-27T15:38:31Z","timestamp":1777304311591,"version":"3.51.4"},"reference-count":47,"publisher":"Springer Science and Business Media LLC","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Using parasites as sentinel organisms has received increased attention due to their responses toward environmental degradation. In some sections of the Vaal River, South Africa, water quality is altered and biota distribution affected. The aims of this study were to assess and compare infection variables of Paradipolozoon ichthyoxanthonAvenant-Oldewage, 2014 in Avenant- Oldewage et al. (2014) at two sites along the Vaal River and compare the water quality and trace element levels at the sites. Infection variables of the parasite, physico-chemical variables, and sediment and water samples for trace element analysis were collected at each site. Conductivity and trace element concentrations were higher at the Vaal River site than the Vaal Dam. Temporal variances in water quality and parasite prevalence, mean intensity and mean abundance, at intervals over a 14 year period occurred, P. ichthyoxanthon was absent at the Vaal River site though the host fish are present. Prevalence peaks in summer and winter. Comparison of infection data to water quality and trace elements indicated that conductivity and trace element levels negatively affected\/correlated with the infection variables. Higher trace elements concentration and conductivity at the Vaal River site are thought to be driving factors responsible for absence of the parasite.<\/jats:p>","DOI":"10.1515\/ap-2016-0005","type":"journal-article","created":{"date-parts":[[2016,1,11]],"date-time":"2016-01-11T17:15:00Z","timestamp":1452532500000},"source":"Crossref","is-referenced-by-count":22,"title":["Effects of altered water quality and trace elements on the infection variables of Paradiplozoon ichthyoxanthon (Monogenea: Diplozoidae) from two sites in the Vaal River system, South Africa"],"prefix":"10.1007","volume":"61","author":[{"given":"Beric 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Helminthology"},{"key":"ref361","doi-asserted-by":"crossref","first-page":"753","DOI":"10.1016\/0020-7519(92)90124-4","article-title":"Determinants of host - specificity in parasites of freshwater fishes of","volume":"22","author":"Poulin","year":"1992","journal-title":"International Journal Parasitology"},{"key":"ref271","first-page":"13","article-title":"Environmental Parasitology : What can parasites tell us about human impacts on the environment","author":"Lafferty","year":"1997","journal-title":"Parasitology Today"},{"key":"ref331","doi-asserted-by":"publisher","first-page":"369","DOI":"10.1016\/j.scitotenv.2006.05.024","article-title":"Effects of aqueous aluminium on four fish ectoparasites of the Total","author":"Pettersen","year":"2006","journal-title":"Science Environment"},{"key":"ref51","first-page":"83","article-title":"Parasitology meets ecology on its own terms : revisited of","author":"Bush","year":"1997","journal-title":"The Journal Parasitology"},{"key":"ref471","doi-asserted-by":"publisher","first-page":"949","DOI":"10.1016\/j.pce.2011.07.075","article-title":"An assessment of the influence of multiple stressors on the Vaal River South Africa Physics and Chemistry of the","volume":"36","author":"Wepener","year":"2011","journal-title":"Earth"},{"key":"ref421","doi-asserted-by":"publisher","first-page":"250","DOI":"10.1016\/j.aquaculture.2005.05.006","article-title":"Toxicity of aqueous aluminium to the ectoparasitic monogenean Gyrodactylus salaris","author":"Soleng","year":"2005","journal-title":"Aquaculture"},{"key":"ref201","first-page":"40","article-title":"Arsenic chromium copper iron manganese lead selenium and zinc in the tissues of the largemouth yellowfish Labeobarbus kimberleyensis and from the Vaal Dam South Africa and associated consumption risks","author":"Gilbert","year":"2014","journal-title":"Water SA"},{"key":"ref241","first-page":"200","article-title":"Influence of pollution on parasites of aquatic animals in","volume":"30","author":"Khan","year":"1991","journal-title":"Advances Parasitology"},{"key":"ref461","doi-asserted-by":"publisher","first-page":"126","DOI":"10.1017\/S0031182003003494","article-title":"Parasite communities as indicators of recovery from pollution : parasites of roach rutilus ) and perch fluviatilis ) in Central Finland","author":"Valtonen","year":"2003","journal-title":"Parasitology"},{"key":"ref341","doi-asserted-by":"publisher","first-page":"39","DOI":"10.2989\/16085914.2013.854732","article-title":"Metal contamination of sediments and fish from the Vaal River South Africa of Aquatic","author":"Pheiffer","year":"2014","journal-title":"Journal Science"},{"key":"ref231","doi-asserted-by":"publisher","first-page":"63","DOI":"10.1017\/S0022149X0000883X","article-title":"Thermal effects on the seasonal dynamics of Paradiplozoon homoion and parasitizing roach Rutilus rutilus of","author":"H\u00f6glund","year":"1989","journal-title":"Journal Helminthology"},{"key":"ref21","doi-asserted-by":"publisher","first-page":"112","DOI":"10.1017\/S0031182000076964","article-title":"Experimental study on the influence of paper and pulp mill effluent on gill parasite communities of roach rutilus","author":"Bagge","year":"1996","journal-title":"Parasitology"},{"key":"ref481","doi-asserted-by":"publisher","first-page":"189","DOI":"10.1016\/j.vetpar.2012.04.029","article-title":"a Infection level of monogenean gill parasite Diplozoon kashmirensis Polyopisthocotylea ) in the Crucian Carp Carassius carassius from lake ecosystems of an altered water quality : What factors do have an impact on the Diplozoon infection","author":"Zargar","year":"2012","journal-title":"Veterinary Parasitology"},{"key":"ref501","first-page":"33","article-title":"Effect of water pollution on ectoparasites of bream brama of","author":"Zharikova","year":"1993","journal-title":"Journal 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