Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fiocruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro 21040-360, Brazil.
Vet Parasitol. 2013 Mar 31;193(1-3):302-6. doi: 10.1016/j.vetpar.2012.12.011. Epub 2012 Dec 21.
Owing to the veterinary and medical importance of heterophyid trematodes, a survey on Ascocotyle (Phagicola) longa in different organs of mullets Mugil liza from Rio de Janeiro was undertaken. The prevalence of metacercariae varied greatly between different organs of the mullets: spleen (100%), heart (98%), intestine wall (97%), liver (97%), muscle (87%), stomach wall (77%), brain (47%), gonads (30%) and gall bladder (30%). The high level of the intensity of the infection in relation to different fish organs was confirmed in two experimental infections performed during the spring/summer and autumn/winter seasons when 258 and 47 adult parasites were recovered from hamsters fed only with small pieces of muscle tissue. The potential risk of infection was considered to be high in view of the high prevalence and intensity of A. (P.) longa in the muscles of mullets throughout the year. Additionally new confocal imaging of metacercariae and adults experimentally obtained, enabled for the first time the description of a short genital atrium formed by the union of uterus and ejaculatory duct.
由于异形吸虫在兽医和医学上的重要性，对来自里约热内卢的鲻鱼 Mugil liza 不同器官中的 Ascocotyle (Phagicola) longa 进行了调查。囊蚴的流行率在鲻鱼的不同器官之间差异很大：脾脏（100%）、心脏（98%）、肠壁（97%）、肝脏（97%）、肌肉（87%）、胃壁（77%）、脑（47%）、性腺（30%）和胆囊（30%）。在春季/夏季和秋季/冬季进行的两次实验感染中，当仅用小块肌肉组织喂养仓鼠时，从仓鼠中回收了 258 条和 47 条成年寄生虫，证实了感染强度与不同鱼类器官之间的高水平相关。考虑到异形吸虫在鲻鱼肌肉中的高流行率和感染强度，感染的潜在风险被认为很高。此外，对实验获得的囊蚴和成虫进行的新共聚焦成像，首次描述了由子宫和射精管联合形成的短生殖器房。
