PDF(Pubmed)
Abstract：
Oesophagostomum spp. (Family: Chabertiidae) is keeping a low profile in terms of severity in Bangladesh while maintaining economic loss through disguise within sheep and goats. The study was performed to identify prevalence, confirmation of species through morphology and morphometry followed by phylogeny using ITS2 and COX1 genes. In total 384 slaughterhouse-sourced small and large intestines were pooled from Mymensingh, Kishoreganj, Netrokona, Sherpur and Tangail districts of Mymensingh division. Followed by isolation, O. columbianum and O. asperum were identified following their key morphological features. Notably, O. asperum was first time detected in Bangladesh. The overall prevalence of Oesophagostomum spp. was found 60.93%. The prevalence of O. columbianum (64.95%) was almost double than that of O. asperum (35.04%). Among several characters, only the distance between anus to tail tip showed a significant morphological disparity in female. The Neighbor-joining (NJ) phylogenic trees based on ITS2 and COX1 genes confirmed the study species. The first time identified O. asperum along with morphometry and phylogeny will add value to the fact that nematodes are invisibly present with high prevalence in this country. This study will help to draw specific attention to command a practical control strategy for intervening in economic loss.
摘要：
食管造口菌属。（家庭：Chabertiidae）在孟加拉国的严重程度方面保持低调，同时通过伪装绵羊和山羊来维持经济损失。这项研究是为了确定患病率，通过形态和形态计量学确认物种，然后使用ITS2和COX1基因进行系统发育。从Mymensingh汇集了总共384个屠宰场的小肠和大肠，Kishoreganj,Netrokona,迈门辛分区的Sherpur和Tangail地区。接下来是孤立，根据其关键形态特征鉴定了O.columbianum和O.asperum。值得注意的是,在孟加拉国首次发现了O.Asperum。食管造口菌的总体患病率。发现60.93%。母猪的患病率（64.95％）几乎是O.asperum（35.04％）的两倍。在几个角色中，只有肛门到尾尖之间的距离在雌性中显示出明显的形态差异。基于ITS2和COX1基因的相邻连接（NJ）系统发育树证实了该研究物种。首次发现O.asperum以及形态计量学和系统发育将为线虫在该国的高患病率隐形存在这一事实增加价值。这项研究将有助于引起特别注意，以采取实用的控制策略来干预经济损失。
