Bellay Sybelle, Takemoto Ricardo Massato, Oliveira Edson Fontes
Universidade Estadual de Maringa, Nucleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Maringa, Parana, Brazil.
Acta Parasitol. 2012 Mar;57(1):53-60. doi: 10.2478/s11686-012-0011-z. Epub 2012 Feb 25.
Sixty-one specimens of the piranha Serrasalmus marginatus Valenciennes, 1837 were analyzed, aiming at assessing the community structure of their gill parasites. The samples were collected in lagoons of the Paraná, Ivinheima and Baia Subsystems within the Upper Paraná River Floodplain (Brazil). Host size and sex had little or no influence on the abundance and prevalence of parasites. The organization of the gill parasite infracommunities of S. marginatus was significantly non-random according to null models and ordination analyses. In general, parasite infrapopulations were not affected by interspecific associations or host characteristics (e.g. size, sex), what highlights the importance of local habitat characteristics to community organization of gill parasites of S. marginatus in the Upper Paraná River Floodplain.
对61份1837年命名的红腹锯鲑脂鲤（Serrasalmus marginatus Valenciennes）样本进行了分析，旨在评估其鳃寄生虫的群落结构。样本采集于巴西上巴拉那河泛滥平原的巴拉那、伊维奈马和巴伊亚子系统的泻湖。宿主的大小和性别对寄生虫的丰度和感染率影响很小或没有影响。根据零模型和排序分析，红腹锯鲑脂鲤鳃寄生虫亚群落的组织明显是非随机的。一般来说，寄生虫种群不受种间关联或宿主特征（如大小、性别）的影响，这突出了当地栖息地特征对上巴拉那河泛滥平原红腹锯鲑脂鲤鳃寄生虫群落组织的重要性。
