Ailán-Choke Lorena G, Ramallo Geraldine, Davies Dora
Instituto para el Estudio de la Biodiversidad de Invertebrados, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Av. Bolivia 5150, (4400) Salta, Argentina.
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
Acta Parasitol. 2018 Sep 25;63(3):595-604. doi: 10.1515/ap-2018-0068.
This study describes the morphology of Procamallanus (Spirocamallanus) pintoi (Kohn et Fernandes, 1988), isolated from the intestine of Corydoras micracanthus Regan, 1912 and C. paleatus (Jenyns, 1842) (both Callichthyidae, Siluriformes) from Bermejo and Juramento River basins, respectively, province of Salta, Argentina. This is the first record of P. (S.) pintoi in C. micracanthus from Northwestern Argentina. The light and scanning electron microscopy observations of P. (S.) pintoi, revealed a few previously unreported morphological details of the cephalic region, vulva and caudal region of males. In addition, morphometric variability was observed in, mainly body size, glandular oesophagus length and position of the vulva between present specimens and those described in previous studies. A key to the species of Procamallanus (Spirocamallanus) from the Neotropical Realm is proposed.
本研究描述了从阿根廷萨尔塔省贝尔梅霍河流域和胡拉门托河流域的小棘兵鲶（Corydoras micracanthus Regan，1912）及苍白兵鲶（C. paleatus (Jenyns, 1842)）（均为鲇形目甲鲶科）肠道中分离出的平托原线虫（Procamallanus (Spirocamallanus) pintoi (Kohn et Fernandes, 1988)）的形态。这是阿根廷西北部小棘兵鲶体内平托原线虫的首次记录。对平托原线虫的光学显微镜和扫描电子显微镜观察揭示了雄性头部区域、阴门和尾部区域一些此前未报道的形态细节。此外，在本研究标本与先前研究中描述的标本之间，观察到形态测量上的变异性，主要体现在体型、腺质食管长度和阴门位置上。本文还提出了新热带界平托原线虫（Procamallanus (Spirocamallanus)）物种的检索表。
