Pantoja Camila, Scholz Tomáš, Luque José Luis, Jones Arlene
Programa de Pós-Graduação em Ciências Veterinárias, Universidade Federal Rural do Rio de Janeiro (UFRRJ), Seropédica, RJ, CEP 23851-970, Brazil.
Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic.
Syst Parasitol. 2018 Sep;95(7):611-624. doi: 10.1007/s11230-018-9808-y. Epub 2018 Jul 3.
Two new genera and three new species of paramphistomoid digeneans are described in the family Cladorchiidae Fischoeder, 1901 from doradid, heptapterid, pimelodid and pseudopimelodid fishes in the Amazon River in Peru. Goeldamphistomum amazonum n. g., n. sp. (type-species) from Goeldiella eques (Müller & Troschel) (type-host) and Tenellus trimaculatus (Boulenger), and Goeldamphistomum peruanum n. g., n. sp. from Duopalatinus peruanus Eigenmann & Allen (type-host), Calophysus macropterus (Lichtenstein) and Microglanis sp. are placed in the Dadayiinae Fukui, 1929. Both species have an accessory acetabular sucker, which distinguishes the genus from all taxa previously reported from South American freshwater fishes. They differ from each other primarily in that G. amazonum has a prebifurcal genital pore and oblique, separated testes, the levels of which rarely overlap longitudinally, whereas G. peruanum has a postbifurcal genital pore and testes directly to obliquely tandem. Iquitostrema papillatum n. g., n. sp. (Kalitrematinae Travassos, 1933) from the intestine of Hassar orestis (Steindachner) differs from other members of the subfamily in the combination of a massive acetabulum with a papillate luminal surface and symmetrical testes which overlie the caeca close to the caecal arch. These are the first records of paramphistomes from the five host species studied here.
在秘鲁亚马逊河的陶乐鲶科、项鳍鲶科、油鲶科和拟油鲶科鱼类中，发现了双腔科1901年菲舍尔描述的双腔吸虫类的两个新属和三个新物种。来自戈氏魮脂鲤（Müller & Troschel）（模式宿主）和三斑细尾鲶（Boulenger）的亚马逊戈氏双腔吸虫新属新种（模式种），以及来自秘鲁杜氏鲇（Eigenmann & Allen）（模式宿主）、大鳍卡尔波鲶（Lichtenstein）和小油鲶属某种的秘鲁戈氏双腔吸虫新属新种，被归入1929年福井的达氏亚科。这两个物种都有一个辅助吸盘，这使该属与之前报道的所有南美洲淡水鱼的分类单元区分开来。它们彼此的主要区别在于，亚马逊戈氏双腔吸虫有一个分叉前的生殖孔和倾斜、分离的睾丸，其水平位置在纵向很少重叠，而秘鲁戈氏双腔吸虫有一个分叉后的生殖孔，睾丸直接到倾斜串联。来自奥氏哈萨鲶（Steindachner）肠道的乳头伊基托吸虫新属新种（1933年特拉瓦索斯卡利特吸虫亚科）与该亚科的其他成员不同，其特征在于有一个巨大的吸盘，其管腔表面有乳头状突起，以及对称的睾丸，睾丸覆盖在靠近盲肠弓的盲肠上。这些是本文研究的五种宿主物种中首次记录的双腔吸虫。
