黑 (Diptera: Simuliidae) 在加拉帕戈斯群岛:本地还是偶然的?
Peter H Adler1, Will K Reeves2, John W McCreadie3
1Department of Plant and Environmental Sciences, Clemson University, Clemson, South Carolina, United States of America.
PloS one
|October 24, 2024
概括
加拉帕戈斯黑,以前称为Simulium ochraceum,通过宏观基因分析被确定为Simulium antillarum. 这种入侵物种对加拉帕戈斯群岛的野生动物和牲畜构成威胁.
科学领域:
- 基因组学就是基因组学.
- 生态生态学 生态生态学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 侵入性物种在全球范围内构成重大生态威胁.
- 区分本地物种和外来物种可能是一项挑战.
- 在加拉帕戈斯群岛的黑 (Simulium ochraceum) 据认为是最近引入的.
研究的目的:
- 为了确定黑在加拉帕戈斯群岛的起源,来源和居住时间.
- 为了澄清加拉帕戈斯黑种群的分类学地位.
- 为了研究这种物种复杂的进化历史和分散.
主要方法:
- 黑幼虫的聚烯染色体的宏观基因组分析.
- 在加拉帕戈斯群岛的7个地点和厄瓜多尔大陆,中美洲和加勒比海的30个地点采样.
- 对染色体重新排列和带状序列的分析,以识别不同的细胞形状.
主要成果:
- 在500个分析幼虫中确定了13种不同的细胞形状,至少有7种可能代表完整的物种.
- 确定加拉帕戈斯黑属于一个单一的,凝聚力的细胞形,与大陆种群相同.
- 将加拉帕戈斯黑改名为Simulium antillarum,沃尔科蒂被确认为一个初级同义词.
结论:
- 加拉帕戈斯黑被认定为Simulium antillarum,这是一个广泛分布的新热带物种.
- 虽然它到达加拉帕戈斯群岛的确切时间尚不清楚,但它是一个有效的殖民者.
- 西蒙对人类,牲畜和可能是加拉帕戈斯本土动物群有不利影响.
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