Pinto Roberto Magalhães, Brener Beatriz, Tortelly Rogério, Menezes Rodrigo Caldas, Muniz-Pereira Luís Cláudio
Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, 21040-900, Brasil.
Mem Inst Oswaldo Cruz. 2008 May;103(3):295-7. doi: 10.1590/s0074-02762008005000017. Epub 2008 Apr 30.
The pathology induced in turkeys (Meleagris gallopavo) by two capillariid nematodes, Baruscapillaria obsignata and Eucoleus annulatus is described together with data on prevalences, mean infection and range of worm burdens. B. obsignata occurred with a prevalence of 72.5% in the 40 examined hosts in a range of 2-461 nematodes and a mean intensity of 68.6, whereas E. annulatus was present in 2.5% of the animals, with a total amount of five recovered parasites. Gross lesions were not observed in the parasitized birds. Lesions due to B. obsignata mainly consisted of the thickening of intestinal villi with a mild mixed inflammatory infiltrate with the presence of mononuclear cells and heterophils. The lesions induced by E. annulatus were represented by foci of inflammatory infiltrate with heterophils in the crop epithelium and esophagus of a single infected female. These are the first pathological findings related to the presence of capillariid worms in turkeys to be reported in Brazil so far. Capillaria anatis, although present, was not pathogenic to the investigated turkeys.
本文描述了两种毛细线虫——隐匿巴氏毛细线虫（Baruscapillaria obsignata）和环纹真毛细线虫（Eucoleus annulatus）对火鸡（Meleagris gallopavo）造成的病理学影响，并给出了患病率、平均感染情况和虫负荷范围的数据。隐匿巴氏毛细线虫在40只受检宿主中的患病率为72.5%，虫数范围为2至461条，平均强度为68.6；而环纹真毛细线虫在2.5%的动物体内出现，共发现5条虫体。在受寄生的鸟类中未观察到肉眼可见的病变。隐匿巴氏毛细线虫引起的病变主要包括肠绒毛增厚，伴有轻度混合性炎症浸润，有单核细胞和嗜异性粒细胞。环纹真毛细线虫引起的病变表现为在一只受感染雌性火鸡的嗉囊上皮和食管中出现嗜异性粒细胞炎症浸润灶。这是迄今为止巴西首次报道的与火鸡体内毛细线虫存在相关的病理学发现。鸭毛细线虫（Capillaria anatis）虽然存在，但对所研究的火鸡无致病性。
