Silva João Otávio Santos, Sousa Leandro, de Paula Eris Amorim, Takemoto Ricardo Massato, Carvalho Lucélia Nobre
Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Laboratório de Ictioparasitologia, Universidade Estadual de Maringá - UEM, Av. Colombo, 5790, Zona 7 - CEP: 87020-900 Maringá, Paraná, Brazil.
Laboratório de Ictiologia de Altamira, Universidade Federal do Pará, Altamira, PA 68372-040, Brazil.
Parasitol Int. 2025 Dec;109:103114. doi: 10.1016/j.parint.2025.103114. Epub 2025 Jun 28.
Electrophorus voltai, commonly known as poraquê, is a fish species widely distributed in the Amazon Basin. This study presents the first record of parasitism by Dolops discoidalis, an obligate hematophagous ectoparasite, in E. voltai from the Xingu River Basin. Six host specimens were examined (mean total length: 119.5 cm), harboring 41 parasite individuals (19 males and 21 females), with a prevalence of 100 % and a mean intensity of 6.83 ± 2.22. Parasites were attached to specific regions of the host's body. Our findings support the affinity of D. discoidalis for scaleless fish and contribute to the still limited knowledge of the parasitic fauna of poraquê, Electrophorus species.
电伏大电鳗，通常被称为“poraquê”，是一种广泛分布于亚马逊河流域的鱼类。本研究首次记录了来自欣古河流域的电伏大电鳗感染了盘状多洛普斯虫（一种专性吸血外寄生虫）。检查了6个宿主标本（平均全长：119.5厘米），共发现41只寄生虫个体（19只雄性和21只雌性），感染率为100%，平均感染强度为6.83±2.22。寄生虫附着在宿主身体的特定部位。我们的研究结果支持了盘状多洛普斯虫对无鳞鱼类的偏好，并有助于增加对电鳗属鱼类（即“poraquê”）寄生动物群仍有限的了解。
