Open AccessO papel de Ancyrocephalinae (Monogenea: Dactylogyridae), parasito de Geophagus brasiliensis (Pisces: Cichlidae), como indicador ambiental
Author(s) -
Rubens Riscala Madi,
Marlene Tiduko Ueta
Publication year - 2009
Publication title -
revista brasileira de parasitologia veterinária/brazilian journal of veterinary parasitology
Language(s) - English
Resource type - Journals
eISSN - 1984-2961
pISSN - 0103-846X
DOI - 10.4322/rbpv.01802008
Subject(s) - monogenea , biology , parasitism , zoology , parasite hosting , population , ecology , gill , host (biology) , fishery , demography , world wide web , fish <actinopterygii> , computer science , sociology
The variations in the parasite population of fishes may be indicative of environmental alterations. With the aim of studying the variation of the parasitism by Ancyrocephalinae in Geophagus brasiliensis, two reservoirs of distinct trophic characterizations (Juqueri - eutrophic and Jaguari - oligomesotrophic) were compared. The prevalence rates and intensity of infection of this parasite were measured bimonthly for one year. The results showed that the prevalence and the intensity of infection vary in according to the alteration in the storage level of the reservoirs and consequently to the variations in the amount of material in suspension in the water.