Moravec Frantiek, Scholz Tomás, Dyková Iva, Kuchta Roman, Fiala Ivan, Kohn Anna
Institute of Parasitology, Academy of Sciences of the Czech Republic, Branisovská 31, 370 05 Ceské Budejovice, Czech Republic.
J Parasitol. 2006 Feb;92(1):138-44. doi: 10.1645/GE-3523.1.
Nematodes (1 male and numerous females) of the Philometridae were collected from the mesentery of 2 species of pimelodid catfishes, Calophysus macropterus and Perrunichthys perruno, from the Amazon River basin (fishmarket in Iquitos, Loreto District) in Peru. A detailed study of their morphology (including scanning electron microscopy) and a reexamination of the type and voucher specimens of Philometra amazonica Travassos, 1960, from Brazilian catfishes confirmed that they belong to this species and that Philometra (Alinema) alii Rasheed, 1963 is its junior synonym. Because of some marked morphological peculiarities of this species (presence of minute peribuccal sclerotized formations, a functional vagina and vulva in gravid female, and structure of the male tail), the validity of an independent genus, Alinema Rasheed, 1963, is confirmed, to which this species is transferred as Alinema amazonicum (Travassos, 1960) n. comb. This is the first record of this parasite from Peru, and P. perruno represents its new host record.
从秘鲁亚马逊河流域（洛雷托省伊基托斯的鱼市）的两种油鲶科鲶鱼，即大鳍卡尔油鲶和佩氏佩鲁油鲶的肠系膜中采集到了毛细科线虫（1只雄性和多只雌性）。对其形态进行了详细研究（包括扫描电子显微镜观察），并重新检查了1960年特拉瓦索斯从巴西鲶鱼中鉴定的亚马逊毛细线虫的模式标本和凭证标本，结果证实它们属于该物种，且1963年拉希德鉴定的阿里毛细线虫是其次异名。由于该物种具有一些显著的形态特征（存在微小的口周硬化结构、妊娠雌虫具有功能性的阴道和阴门，以及雄虫尾部结构），1963年拉希德建立的独立属——阿林线虫属的有效性得到确认，该物种被转移到该属，命名为亚马逊阿林线虫（特拉瓦索斯，1960年）新组合。这是该寄生虫在秘鲁的首次记录，佩氏佩鲁油鲶是其新的宿主记录。
