Limited genetic evidence for host plant-related differentiation in the Western cherry fruit fly, Rhagoletis indifferens
Limited genetic evidence for host plant-related differentiation in the Western cherry fruit fly, Rhagoletis indifferens
复制标题
西樱桃果蝇Rhagoletis indifferens中宿主植物相关分化的遗传证据有限
DOI：
10.1111/eea.12712
复制
发表时间：
2018
影响因子：
1.9
通讯作者：
Goughnour, Robert B.
中科院分区：
文献类型：
--
作者：
Saint Jean, Gilbert;Hood, Glen R.;Egan, Scott P.;Powell, Thomas H.;Schuler, Hannes;Doellman, Meredith M.;Glover, Mary M.;Smith, James J.;Yee, Wee L.;Goughnour, Robert B.
19世纪中期，美国东部的苹果实蝇Rhagoletis pomonella（沃尔什）从绒毛山楂（学名：Aegus mollis（Torrey &阿萨格雷）Scheele）转移到了引进的驯化苹果（学名：Malus apartica（Borkhausen）），这是一个基因流生态分化的模型。类似的系统可能存在于美国西北部和加拿大的不列颠哥伦比亚省，其中Rhagoletis indifferensCurran（双翅目：实蝇科）攻击本地苦樱桃樱桃李（道格拉斯前胡克）伊顿（蔷薇科）。人口R。无患子已成为甜樱桃（Prunus avium（L.）L.，在甜樱桃于19世纪中期被引入该地区后不久。这两种樱桃的结果物候与苹果和山楂的结果物候相似，驯化的甜樱桃通常在6月和7月成熟，而苦樱桃在7月和8月成熟。在这里，我们的报告，但是，很少有证据表明之间的遗传分化的苦与甜樱桃种群ofR。indifferor等位基因频率和成虫羽化时间之间的显着遗传关联，如已记录的苹果和绒毛山楂蝇。目前的研究结果支持以前的地理范围有限的调查ofR。本文报道了加拿大不列颠哥伦比亚省的一个种--无刺红腹锦鸡儿R. cingulata，在密歇根州，美国，这意味着缺乏宿主相关的分化苍蝇侵染不同的樱桃宿主植物。可能的原因，为什么主机种族很容易遗传检测forR。pomonellabut not for R.讨论了冷漠。
The shift of the fruit flyRhagoletis pomonella(Walsh) in the mid‐1800s from downy hawthorn,Crataegus mollis(Torrey & Asa Gray) Scheele, to introduced domesticated apple,Malus domestica(Borkhausen), in the eastern USA is a model for ecological divergence with gene flow. A similar system may exist in the northwestern USA and British Columbia, Canada, whereRhagoletis indifferensCurran (Diptera: Tephritidae) attacks the native bitter cherryPrunus emarginata(Douglas ex Hooker) Eaton (Rosaceae). Populations ofR. indifferenshave shifted and became economic pests on domesticated sweet cherry,Prunus avium(L.) L., shortly after sweet cherries were introduced to the region in the mid‐1800s. The fruiting phenologies of the two cherries differ in a similar manner as apples and hawthorns, with domesticated sweet cherries typically ripening in June and July, and bitter cherries in July and August. Here we report, however, little evidence for genetic differentiation between bitter vs. sweet cherry populations ofR. indifferensor for pronounced genetic associations between allele frequencies and adult eclosion time, as has been documented for apple and downy hawthorn flies. The current findings support a previous more geographically limited survey ofR. indifferensin the province of British Columbia, Canada, and an analysis of its sister species,R. cingulata, in the state of Michigan, USA, implying a lack of host‐related differentiation for flies infesting different cherry host plants. Possible causes for why host races are readily genetically detected forR. pomonellabut not forR. indifferensare discussed.