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Genetic Diversity and Wolbachia (Rickettsiales: Anaplasmataceae) Prevalence Within a Remnant Population of Regal Fritillary, Argynnis idalia (Lepidoptera: Nymphalidae), in South-Central Pennsylvania
Journal of Insect Science ( IF 2.2 ) Pub Date : 2022-01-26 , DOI: 10.1093/jisesa/ieac006
Ilga Rutins 1 , Sarah Schannauer 1 , Sharil Orellana 1 , Harrison Laukhuff 1 , Eric Lang 1 , Timothy Becker 2 , Erika McKinney 3 , Kayli Thomas 3 , Virginia Tilden 3 , Mark Swartz 3 , Jaime E Blair 1
Affiliation  

Eastern populations of the North American regal fritillary, Argynnis idalia Drury (1773), have been largely extirpated over the past half century. Here we report on the last remaining population of eastern regal fritillaries, located within a military installation in south-central Pennsylvania. Samples were obtained from field specimens during two years of annual monitoring, and from females collected for captive rearing over a five year period. Nuclear microsatellite and mitochondrial sequence data do not suggest subdivision within this population, but excess nuclear homozygosity indicates negative impacts on genetic diversity likely due to small population size and potential inbreeding effects. Molecular assays did not detect Wolbachia endosymbionts in field specimens of regal fritillary, but sympatric Argynnis sister species showed high prevalence of Wolbachia infected individuals. Our results inform ongoing conservation and reintroduction projects, designed to protect the last remaining regal fritillary population from extirpation in the eastern United States.

中文翻译:

遗传多样性和沃尔巴克氏体(立克次氏体:无形体科)在宾夕法尼亚州中南部富贝母、Argynnis idalia(鳞翅目:蛱蝶科)残余种群中的流行率

北美帝王贝母 Argynnis idalia Drury (1773) 的东部种群在过去半个世纪中已基本灭绝。在这里,我们报告了位于宾夕法尼亚州中南部一个军事设施内的东部富豪贝母的最后剩余人口。样本是在两年的年度监测期间从野外标本中获得的,并从五年内收集的用于圈养饲养的雌性中获得。核微卫星和线粒体序列数据并未表明该种群内的细分,但过度的核纯合性表明可能由于种群规模小和潜在的近亲繁殖效应而对遗传多样性产生负面影响。分子测定未检测到富贵贝母田间标本中的 Wolbachia 内共生菌,但同域的 Argynnis 姐妹物种显示出受沃尔巴克氏体感染的个体的高患病率。我们的研究结果为正在进行的保护和重新引入项目提供了信息,这些项目旨在保护美国东部最后剩下的帝王贝母种群免于灭绝。
更新日期:2022-01-26
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