Museo de Artrópodos, Departamento de Biología de la Conservación, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico.
Museo de Artrópodos, Departamento de Biología de la Conservación, CONACYT-Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico.
J Insect Sci. 2021 Jan 1;21(1). doi: 10.1093/jisesa/ieaa144.
To properly define ecoregions, specific criteria such as geology, climate, or species composition (e.g., the presence of endemic species) must be taken into account to understand distribution patterns and resolve ecological biogeography questions. Since the studies on insects in Baja California are scarce, and no fine-scale ecoregions based on the region's entomofauna is available, this study was designed to test whether the ecoregions based on vegetation can be used for insects, such as Calliphoridae. Nine collecting sites distributed along five ecoregions were selected, between latitudes 29.6° and 32.0°N. In each site, three baited traps were used to collect blow flies from August 2017 to June 2019 during summer, winter, and spring. A total of 30,307 individuals of blow flies distributed in six genera and 13 species were collected. The most abundant species were Cochliomyia macellaria (Fabricius), Phormia regina (Meigen), and Chrysomya rufifacies (Macquart). The composition of the Calliphoridae community was different between the localities and three general groups have been distinguished, based on the species composition similarity (ANOSIM) results: Gulf-Desert, Mountains, and Pacific-Center. The vegetation-based ecoregions only reflect the blow fly species' distributions to a certain extent, meaning that care must be taken when undertaking ecological biogeographical studies using regionalization based on organisms other than the focal taxa because vegetation does not always reflect fauna species composition.
为了正确定义生态区，必须考虑特定的标准，如地质、气候或物种组成（例如，特有物种的存在），以了解分布模式并解决生态生物地理学问题。由于下加利福尼亚州的昆虫研究较少，并且没有基于该地区昆虫区系的精细生态区，因此本研究旨在测试基于植被的生态区是否可用于昆虫，如丽蝇科。选择了沿五个生态区分布的九个采集点，纬度在 29.6°和 32.0°N 之间。在每个地点，使用三个诱捕器从 2017 年 8 月至 2019 年 6 月在夏季、冬季和春季收集虻科昆虫。共收集到 30307 只分布在六个属和 13 个种的虻科昆虫。最丰富的物种是 Cochliomyia macellaria (Fabricius)、Phormia regina (Meigen) 和 Chrysomya rufifacies (Macquart)。根据物种组成相似性（ANOSIM）结果，虻科昆虫群落的组成在不同地点存在差异，已区分出三个一般组：海湾-沙漠、山脉和太平洋中心。基于植被的生态区仅在一定程度上反映了虻科昆虫的分布，这意味着在进行基于除焦点分类群以外的生物体的生态生物地理研究时必须小心，因为植被并不总是反映动物区系物种组成。
