Instituto Federal do Acre - IFAC, Rio Branco, AC, Brasil.
Embrapa Amapá, Macapá, AP, Brasil.
Rev Bras Parasitol Vet. 2022 Jun 6;31(2):e006822. doi: 10.1590/S1984-29612022029. eCollection 2022.
This study was carried out to evaluate the anthelminthic efficacy of seeds of Cucurbita maxima and Carica papaya for controlling monogeneans in the gills of Leporinus macrocephalus, besides hepatosomatic and splenosomatic index and condition factor of host. The fish were fed with seeds of C. maxima or C. papaya for seven days, and these treatments did not cause any mortality among them. Jainus leporini, Urocleidoides paradoxus, Urocleidoides eremitus and Tereancistrum parvus were the monogeneans found, and their prevalence in fish fed with seeds of C. papaya was 100%, while in fish fed with C. maxima the prevalence was 42.8%. Fish fed with seeds of C. papaya showed decreased in intensity and abundance of monogeneans, while fish fed with seeds of C. maxima presented decreased in abundance. Feeding of L. macrocephalus with seeds of C. maxima or C. papaya had efficacy of 69.6 and 67.8%, respectively. The hepatosomatic index of fish fed with seeds of C. maxima or C. papaya was not affected by the treatments. However, the splenosomatic index and condition factor of fish fed with C. maxima seeds decreased. Seeds of C. maxima and C. papaya may be used for controlling monogeneans of L. macrocephalus in fish farming.
本研究旨在评估南瓜和木瓜种子对控制 Leporinus macrocephalus 鳃上单殖吸虫的驱虫效果，同时评估对宿主的肝体比和脾体比以及条件系数的影响。将鱼用南瓜或木瓜种子喂养七天，这些处理方法没有导致任何鱼死亡。在鱼体内发现的单殖吸虫有 Jaintus leporini、Urocleidoides paradoxus、Urocleidoides eremitus 和 Tereancistrum parvus，用木瓜种子喂养的鱼中单殖吸虫的患病率为 100%，而用南瓜种子喂养的鱼中单殖吸虫的患病率为 42.8%。用木瓜种子喂养的鱼中单殖吸虫的感染强度和丰度降低，而用南瓜种子喂养的鱼中单殖吸虫的丰度降低。用南瓜或木瓜种子喂养 L. macrocephalus 的驱虫效果分别为 69.6%和 67.8%。用南瓜或木瓜种子喂养对鱼的肝体比没有影响。然而，用南瓜种子喂养的鱼的脾体比和条件系数降低。南瓜和木瓜种子可用于控制水产养殖中 L. macrocephalus 的单殖吸虫。
