Molecular Population Structure of Junonia Butterflies from French Guiana, Guadeloupe, and Martinique

IF 1.6 Q2 ENTOMOLOGY
Amber P. Gemmell, Tanja E. Borchers, J. Marcus
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引用次数: 16

Abstract

Up to 9 described species of Junonia butterflies occur in the Americas, but authorities disagree due to species similarities, geographical and seasonal variability, and possible hybridization. In dispute is whether Caribbean Junonia are conspecific with South American species. Cytochrome oxidase I (COI) barcodes, wingless (wg) sequences, and Randomly Amplified Fingerprints (RAF) were studied to reveal Junonia population structure in French Guiana, Guadeloupe, Martinique, and Argentina. Phylogenetic analysis of COI recovered 2 haplotype groups, but most Junonia species can have either haplotype, so COI barcodes are ambiguous. Analysis of nuclear wingless alleles revealed geographic patterns but did not identify Junonia species. Nuclear RAF genotyping distinguished 11 populations of Junonia arranged into 3 clusters. Gene flow occurs within clusters but is limited between clusters. One cluster included all Argentinian samples. Two clusters included samples from French Guiana, Martinique, and Guadeloupe and appear to be divided by larval host plant use (Lamiales versus Scrophulariales). Many Junonia taxa were distributed across populations, possibly reflecting patterns of genetic exchange. We had difficulty distinguishing between the Caribbean forms J. zonalis and J. neildi, but we demonstrate that Caribbean Junonia are genetically distinct from South American J. evarete and J. genoveva, supporting the taxonomic hypothesis that they are heterospecific.
法属圭亚那、瓜德罗普岛和马提尼克岛朱尼亚蝴蝶的分子种群结构
美洲有多达9种被描述的朱奴尼亚蝴蝶,但由于物种相似性,地理和季节变化以及可能的杂交,当局不同意。争论的焦点是加勒比朱诺尼亚是否与南美朱诺尼亚属同种。利用细胞色素氧化酶I (COI)条形码、无翅(wg)序列和随机扩增指纹图谱(RAF)分析了法属圭亚那、瓜德罗普岛、马提尼克岛和阿根廷胡奴尼亚的种群结构。COI的系统发育分析发现了2个单倍型群,但大多数Junonia物种可能具有其中一个单倍型,因此COI条形码具有歧义性。核无翅等位基因分析揭示了其地理分布格局,但未发现其种类。核RAF基因分型将11个居群划分为3个聚类。基因流动发生在集群内,但在集群之间是有限的。其中一组包括所有阿根廷样本。两个集群包括来自法属圭亚那、马提尼克岛和瓜德罗普岛的样本,似乎是根据幼虫寄主植物的使用(Lamiales和Scrophulariales)来划分的。许多Junonia分类群分布在不同的居群中,可能反映了遗传交换模式。我们很难区分加勒比地区的J. zonalis和J. neildi,但我们证明加勒比Junonia在遗传上不同于南美洲的J. evarete和J. genoveva,支持了它们是异种的分类学假设。
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
CiteScore
1.80
自引率
0.00%
发文量
8
审稿时长
15 weeks
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