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在加拉帕戈斯群岛的外来寄生虫Eupelmus pulchriceps (鸟:Eupelmidae) 的形态差异化

Nicolas David Camargo-Martinez¹, Mariana Camacho-Erazo², Angela R Amarillo-Suárez³

¹Lab de Sistemática y Biología Comparada de Insectos, Instituto de Ciencias Naturales, Univ Nacional de Colombia, Bogotá, Colombia.

Neotropical entomology

|December 22, 2023

概括

侵入性黄蜂Eupelmus pulchriceps在加拉帕戈斯群岛之间显示出早期分化的迹象,尽管整体大小没有变化. 这表明它们能够快速适应新的环境.

科学领域:

进化生物学是进化的生物学.
岛屿生物地理学岛屿生物地理学
昆虫生态昆虫生态

背景情况:

群岛为研究物种多样化提供了独特的环境.
表型特征为进化过程提供了洞察力.
欧佩尔马斯 (Eupelmus pulchriceps) 是加拉帕戈斯群岛的一种异国情调的寄生虫黄蜂,它准一种食用侵袭性Leucaena leucocephala种子的甲虫.

研究的目的:

为了调查圣克鲁斯和圣克里斯托巴尔群岛之间的欧佩尔姆斯脉骨的体型,比例和全度差异化.
为了确定地理隔离是否影响这个最近引入的物种的表型特征.

主要方法:

分析了来自两个加拉帕戈斯群岛的112只雌性Eupelmus pulchriceps标本.
身体尺寸和比例尺寸的比较.
应用 permutational多变量变量分析 (PerMANOVA) 来检测差异化.

主要成果:

两座岛屿之间没有发现整体体型的显著差异.
佩尔曼诺瓦 (PerMANOVA) 显示,岛屿之间以及一个岛上的两个地方之间存在显著的差异.
各个结构的全度差异各不相同,翅膀和卵巢在岛屿之间显示出不同的模式.

结论:

岛屿之间的地理距离似乎推动了Eupelmus pulchriceps的早期分化.
观察到的全度变化,特别是在翅膀和卵巢中,可能反映了适应不同生态压力的情况.
由于它可能对加拉帕戈斯岛的食物网产生影响,对这种侵入性寄生虫的持续监测至关重要.

关键词:

一个全度测量法.生物入侵生物入侵形态差异化的形态差异化.一个寄生虫的寄生虫.

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