Parazitske invazije mlađi pirarucu Arapaima gigas Schinz, 1822 (Arapaimatidae) držane u poluintenzivnim farmama u središnjoj Amazoni u Brazilu

• Main Authors: Suzana Oliveira Araújo, Cleusa; Centro Universitário Nilton Lins (UNINILTONLINS), Laboratório de Zoologia Aplicada, Manaus, AM, Brasil; [e-mail], Lúcia Gomes, Ana; Centro Universitário Nilton Lins (UNINILTONLINS), Laboratório de Zoologia Aplicada, Manaus, AM, Brasil, Tavares-Dias, Marcos; Embrapa Amapá. Rodovia Juscelino Kubitschek, Macapá, AP, Brasil, Maria Sampaio Andrade, Sanny; Centro Universitário Nilton Lins (UNINILTONLINS), Laboratório de Zoologia Aplicada, Manaus, AM, Brasil, Belem-Costa, Andréia; Universidade Federal do Amazonas (UFAM), Departamento de Ciências Pesqueiras ( DEPESCA), Campus Universitário, Setor Sul, Manaus, AM, Brasil, Borges, João Tito; FUCAPI, Fundação Centro de Análise, Pesquisa e Inovação Tecnológica, Manaus, Brasil, Nascimento Queiroz, Marieta; Centro Universitário Nilton Lins (UNINILTONLINS), Laboratório de Zoologia Aplicada, Manaus, AM, Brasil, Barbosa, Megara; Centro Universitário Nilton Lins (UNINILTONLINS), Laboratório de Zoologia Aplicada, Manaus, AM, Brasil
• Format: Text
• Language: English
• Published: Faculty of Veterinary Medicine University of Zagreb 2009
• Subjects: Amazona; Arapaima gigas; kultura; paraziti; Amazon; culture; infections; parasites; Terranova
• Online Access: http://hrcak.srce.hr/45610; http://hrcak.srce.hr/file/70541

Istraživanje parazitske faune na farmama riba od velikoga je značenja za nove spoznaje o parazitskim vrstama jer omogućuje upletanje u njihovo razmnožavanje s ciljem sprječavanja pojave epizootija i smanjenja posljedičnih gospodarskih šteta. Ovo istraživanje poduzeto je u svrhu određivanja prevalencije i intenziteta parazita u mlađi vrste Arapaima gigas držane na poluintenzivnim jezerskim farmama u državi Amazona u Brazilu. Pri razudbi je ustanovljeno da je 96,0% A. gigas bilo pozitivno na parazite Dawestrema cycloancistrioides, Dawestrema cycloancistrium (Monogenoidea), Trichodina sp., Ichthyobodo sp. (Protozoa), Camallanus tridentatus, Terranova serrata, Goezia spinulosa (Nematoda) i Argulidae. Ipak, najčešće dokazane vrste parazita bile su D. cycloancistrium, D. cycloancistrioides i Trichodina fariai. U istraživanju se prvi put izvješćuje o parazitima u farmski držane A. gigas, a rezultati govore o visokoj stopi invadiranosti što može dovesti do znatnih poremećaja zdravlja domaćina. Studies regarding parasite fauna in farmed fish are of great relevance to the knowledge of the parasites species, allowing interference in their proliferation in order to avoid epizooties and consequently, economical losses. This study was designed to investigate the prevalence and intensity of parasites in fry Arapaima gigas maintained in ponds of a semi-intensive fifi sh farm in Amazonas State, Brazil. On necropsy, 96.0% of A. gigas were found parasitized by Dawestrema cycloancistrioides, Dawestrema cycloancistrium (Monogenoidea), Trichodina sp., Ichthyobodo sp. (Protozoa), Camallanus tridentatus, Terranova serrata, Goezia spinulosa (Nematoda) and Argulidae. However, D. cycloancistrium, D. cycloancistrioides and Trichodina fariai were the parasites of greatest intensity. This study is the first to report parasitic infections in farmed A. gigas and the results indicated a high rate of infection that might lead to important changes in the health of the hosts.