Eaton Brian R, Moenting Alissa E, Paszkowski Cynthia A, Shpeley Danny
Alberta Research Council, Vegreville, Alberta, Canada.
J Parasitol. 2008 Aug;94(4):949-52. doi: 10.1645/GE-1373.1.
We report myiasis by Lucilia silvarum with an overall prevalence of 0.9% in amphibian populations in boreal Alberta. In the period 1998--1999, we documented L. silvarum infestations in wild populations of wood frog (Rana sylvatica), boreal chorus frog (Pseudacris maculata), boreal toad (Bufo boreas boreas), and Canadian toad (B. hemiophrys). We believe this is the first record of this parasite from boreal and Canadian toads. Almost all previous records of L. silvarum parasitism in North America indicate that myiasis is fatal to an anuran host. Here, we provide the first record of adult individuals from 2 species (wood frog and boreal toad) surviving infestations. Although we actively captured and examined amphibians in Alberta from 1996 to 2006, we only found parasitism in 1998 and 1999. This is the most northerly record of anuran infestations by this parasite.
我们报告了在加拿大艾伯塔省北部两栖动物种群中，西尔维卢氏绿蝇引起的蝇蛆病，总体患病率为0.9%。在1998 - 1999年期间，我们记录了林蛙（Rana sylvatica）、北方合唱蛙（Pseudacris maculata）、北方蟾蜍（Bufo boreas boreas）和加拿大蟾蜍（B. hemiophrys）野生种群中被西尔维卢氏绿蝇感染的情况。我们认为这是该寄生虫在北方蟾蜍和加拿大蟾蜍身上的首次记录。北美此前几乎所有关于西尔维卢氏绿蝇寄生的记录都表明，蝇蛆病对无尾两栖类宿主是致命的。在此，我们首次记录了两个物种（林蛙和北方蟾蜍）的成年个体在感染后存活下来。尽管我们在1996年至2006年期间积极捕捉并检查了艾伯塔省的两栖动物，但仅在1998年和1999年发现了寄生现象。这是该寄生虫对无尾两栖类动物感染的最北记录。
