Using Morphological, Genetic, and Venom Analyses to Present Current and Historic Evidence of Crotalus horridus x adamanteus Hybridization on Jekyll Island, Georgia

IF 0.6 4区 环境科学与生态学 Q4 BIODIVERSITY CONSERVATION
Chad M. Harrison, Joseph Colbert, Collin J. Richter, Preston J McDonald, Lauren M Trumbull, S. A. Ellsworth, Michael P. Hogan, D. Rokyta, Mark J. Margres
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引用次数: 0

Abstract

Abstract - On 17 June 2019, we collected a unique juvenile rattlesnake from a wildlife response call on Jekyll Island State Park, GA. The snake exhibited intermediate color patterns and gross anatomical features suggesting potential hybridization between Crotalus horridus (Canebrake/Timber Rattlesnake) and Crotalus adamanteus (Eastern Diamondback Rattlesnake). Using mitochondrial and nuclear genetic sequencing, venom analyses, and morphological characteristics to test that hypothesis, we were able to verify that this specimen represents only the second documented observation of natural hybridization between C. adamanteus and C. horridus and the first reported with multiple lines of evidence sufficient for confirmation. Surprisingly, genetic analyses found evidence of previous introgression between these species, suggesting hybridization may not be a rare occurrence in the area (and perhaps specifically on Jekyll Island). We will continue to monitor the hybrid individual via radio-telemetry to assess its survival and any subsequent F2 hybridization reproduction events.
利用形态、遗传和毒液分析来展示乔治亚州杰基尔岛上恐怖Crotalus x adamanteus杂交的现有和历史证据
摘要- 2019年6月17日,我们从乔治亚州杰基尔岛州立公园的野生动物响应呼叫中收集了一条独特的幼年响尾蛇。该蛇表现出中间的颜色图案和大体解剖特征,表明Crotalus horridus (Canebrake/Timber rattlessnake)和Crotalus adamanteus (Eastern Diamondback rattlessnake)之间可能存在杂交。通过线粒体和核基因测序、毒液分析和形态特征来验证这一假设,我们能够验证该标本仅代表了第二次记录的C. adamanteus和C. horridus之间自然杂交的观察,以及第一次有多种证据足以证实的报道。令人惊讶的是,基因分析发现了这些物种之间先前的渐渗证据,这表明杂交在该地区可能并不罕见(也许特别是在杰基尔岛上)。我们将继续通过无线电遥测技术监测杂交个体,以评估其存活率和任何后续的F2杂交繁殖事件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Southeastern Naturalist
Southeastern Naturalist 环境科学-生态学
CiteScore
1.20
自引率
16.70%
发文量
31
审稿时长
18-36 weeks
期刊介绍: The Southeastern Naturalist covers all aspects of the natural history sciences of terrestrial, freshwater, and marine organisms and the environments of the southeastern portion of North America, roughly bounded from North Carolina south to Florida, west to Texas, north to Oklahoma, and east back to North Carolina. Manuscripts based on field studies outside of this region that provide information on species within this region may be considered at the Editor’s discretion.
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