Laboratory of Parasitology, Federal University of Agreste of Pernambuco, Garanhuns, PE, Brazil.
Department of Cartographic Engineering, Federal University of Pernambuco, Recife, PE, Brazil.
Vet Parasitol Reg Stud Reports. 2020 Dec;22:100481. doi: 10.1016/j.vprsr.2020.100481. Epub 2020 Oct 11.
Cochliomyia hominivorax (Diptera: Calliphoridae) has been considered the most important cause of myiasis in animals in the South America with most cases being recorded in cattle. In Brazil, the risk of myiasis in swine population is underestimated, leading to difficulties in the implementation of preventive measures. The aim of this study was to report the occurrence of myiasis infesting a swine population over a one-year period and to evaluate the anatomical distribution of these larvae on the animal's body. From May 2019 to April 2020, a total of 2038 inspections were carried out on pigs reared in two farms located in the state of Pernambuco, Northeastern Brazil. Fly larvae retrieved were morphologically identified and the anatomical distribution of myiasis was graphically represented by a heat map indicating its frequency in swine based on the interpolation of data. Cochliomyia hominivorax larvae (n = 78) of second (n = 29) and third (n = 49) developmental stages were recovered in 13 animals (0.64%) out of 2038 inspections performed. The occurrence of myiasis was detected in eight anatomical sites, with higher concentration on the forehead region and on ears. Data herein obtained provide valuable information on the epidemiology and biological aspects of C. hominivorax affecting pigs. In addition, it indicates that the forehead and ears are important sites of parasitism most likely due the high frequency of skin lesions in these areas.
嗜人瘤蝇（双翅目：丽蝇科）被认为是南美的动物蝇蛆病的最重要原因，大多数病例发生在牛身上。在巴西，猪群蝇蛆病的风险被低估了，这导致预防措施的实施困难。本研究的目的是报告在一年时间内侵袭猪群的蝇蛆病的发生情况，并评估这些幼虫在动物身体上的解剖分布。2019 年 5 月至 2020 年 4 月，对巴西东北部伯南布哥州的两个农场饲养的 2038 头猪进行了总共 2038 次检查。回收的蝇幼虫进行形态学鉴定，并通过热图以图形方式表示蝇蛆病的解剖分布，根据数据插值表示其在猪身上的频率。从 2038 次检查中，共从 13 头动物（0.64%）中回收了嗜人瘤蝇第二（n=29）和第三（n=49）发育期幼虫（n=78）。在 8 个解剖部位发现了蝇蛆病，额部和耳部的浓度较高。本文获得的数据提供了有关影响猪的嗜人瘤蝇的流行病学和生物学方面的有价值信息。此外，这表明额头和耳朵是寄生虫寄生的重要部位，这可能是由于这些部位皮肤损伤的频率较高。
