The pepper weevil Anthonomus eugenii Cano (Coleoptera: Curculionidae) is a pest of economic importance for Capsicum species pepper in North America that attacks the reproductive structures of the plant. The insect is distributed across Mexico, the United States, and the Caribbean, and is occasionally found during the pepper growing season in southern Ontario, Canada. Continuous spread of the insect to new areas is partially the result of global pepper trade. Here, we describe the genetic diversity of the pepper weevil using the mitochondrial COI barcoding region across most of its geographic range. In this study, 44 (H1-H44) highly similar haplotypes were identified, the greatest number of haplotypes and haplotype diversity were observed among specimens from its native Mexico, followed by specimens from the United States. Unlike Mexico, a low haplotype diversity was found among specimens from Canada, the Dominican Republic, Italy, and the Netherlands. Out of these 44 haplotypes, 29 are reported for the first time. Haplotype diversity in the Canadian population suggests either multiple and continuous introductions of the pepper weevil into this area or a single introduction of genetically diverse individuals. We discuss the importance of such population genetic data in tailoring pepper weevil management programs, using Canada as an example.

中文翻译：

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使用 COI 条形码区域的辣椒象鼻虫（鞘翅目：Curculionidae）的种群结构和遗传多样性。

辣椒象鼻虫 Anthonomus eugenii Cano (Coleoptera: Curculionidae) 是一种对北美辣椒种辣椒具有经济重要性的害虫，它会攻击植物的生殖结构。这种昆虫分布在墨西哥、美国和加勒比地区，偶尔在加拿大安大略省南部的胡椒生长季节发现。这种昆虫不断向新地区蔓延，部分原因是全球胡椒贸易。在这里，我们使用其大部分地理范围内的线粒体 COI 条形码区域来描述辣椒象鼻虫的遗传多样性。在这项研究中，确定了 44 个（H1-H44）高度相似的单倍型，在其本土墨西哥的标本中观察到最多的单倍型和单倍型多样性，其次是来自美国的标本。与墨西哥不同，在来自加拿大、多米尼加共和国、意大利和荷兰的标本中发现了低单倍型多样性。在这 44 种单倍型中，有 29 种是首次报道的。加拿大人口中的单倍型多样性表明辣椒象鼻虫多次连续引入该地区，或单一引入遗传多样性个体。我们以加拿大为例，讨论了此类种群遗传数据在定制辣椒象鼻虫管理计划中的重要性。加拿大人口中的单倍型多样性表明辣椒象鼻虫多次连续引入该地区，或单一引入遗传多样性个体。我们以加拿大为例，讨论了此类种群遗传数据在定制辣椒象鼻虫管理计划中的重要性。加拿大人口中的单倍型多样性表明辣椒象鼻虫多次连续引入该地区，或单一引入遗传多样性个体。我们以加拿大为例，讨论了此类种群遗传数据在定制辣椒象鼻虫管理计划中的重要性。