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首页> 外文期刊>Journal of Parasitology >THE LIFE CYCLE OF HETEROPHYES YACYRETANA N. SP. (DIGENEA, HETEROPHYIDAE), PARASITIC IN THE ENDEMIC SNAIL AYLACOSTOMA CHLOROTICUM (CAENOGASTROPODA, THIARIDAE) IN ARGENTINA
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THE LIFE CYCLE OF HETEROPHYES YACYRETANA N. SP. (DIGENEA, HETEROPHYIDAE), PARASITIC IN THE ENDEMIC SNAIL AYLACOSTOMA CHLOROTICUM (CAENOGASTROPODA, THIARIDAE) IN ARGENTINA

机译：yacyretana n. sp的veridophyes的生命周期。 （Digenea，Heterophyidae），寄生在alymostoma calloticum（Caenogastropoda，Thiaridae）在阿根廷

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摘要

Here we describe a new heterophyid species, Heterophyes yacyretana n. sp., and resolve its life cycle experimentally. We found the prosobranch snail Aylacostoma chloroticum in Candelaria, Province of Misiones, Argentina (a sector of the High Parana ' River affected by the Yacyreta ' Dam), naturally infected with opisthorchioid cercariae. These cercariae lacked pigmented eyespots as well as body pigment and possessed 7 pairs of penetration glands arranged in 2 lateral bands, together with 18 pairs of flame cells and a V-shaped excretory vesicle. We exposed specimens of 21 fish species to emerging cercariae and obtained metacercariae from the muscles of the caudal peduncle of 3 species of siluriform fish, and adults from chicks infected with experimentally obtained metacercariae from the albino variety of the bronce corydoras, Corydoras aeneus. The new species differs from other species in the genus by the number of sclerites on the genital sac, the distribution of the vitelline follicles, and the combination of the size relationship of the suckers and the genital sac with respect to the posterior extent of intestinal ceca. Heterophyes yacyretana is the first species of the genus reported from the Americas.
机译：在这里，我们描述了一种新的异生植物，异生植物yacyretana n.sp.，并通过实验解析了其生命周期。我们在阿根廷米西奥内斯省坎德拉里亚发现了原鳃纲蜗牛Aylacostoma chloroticum（受亚西里塔大坝影响的巴拉那河的一部分），它自然感染了阿片类尾蚴。这些尾蚴缺乏色素眼点和身体色素，有7对排列在2条侧带中的穿透腺，18对火焰细胞和一个V形排泄囊泡。我们将21种鱼类的标本暴露于新出现的尾蚴中，并从3种水飞蓟形鱼类的尾蒂肌肉中获得了囊蚴，以及从感染了实验获得的bronce-corydoras、corydoras aeneus白化品种囊蚴的雏鸡中获得的成体。新物种与该属其他物种的不同之处在于生殖囊上的巩膜数量、卵黄滤泡的分布，以及吸盘和生殖囊相对于肠盲肠后部范围的大小关系。yacyretana杂生植物是该属首次从美洲报道的物种。

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