Science Enabled by Specimen Data

Ji, Y., Li, X., Ji, T., Tang, J., Qiu, L., Hu, J., … Zhou, X. (2020). Gene reuse facilitates rapid radiation and independent adaptation to diverse habitats in the Asian honeybee. Science Advances, 6(51), eabd3590. doi:10.1126/sciadv.abd3590 https://doi.org/10.1126/sciadv.abd3590

Animals with recent shared ancestry frequently adapt in parallel to new but similar habitats, a process often underlined by repeated selection of the same genes. Yet, in contrast, few examples have demonstrated the significance of gene reuse in colonization of multiple disparate habitats. By analyzi…

Brendel, M. R., Schurr, F. M., & Sheppard, C. S. (2020). Inter‐ and intraspecific selection in alien plants: How population growth, functional traits and climate responses change with residence time. Global Ecology and Biogeography. doi:10.1111/geb.13228 https://doi.org/10.1111/geb.13228

Aim: When alien species are introduced to new ranges, climate or trait mismatches may initially constrain their population growth. However, inter‐ and intraspecific selection in the new environment should cause population growth rates to increase with residence time. Using a species‐for‐time approac…

Orr, M. C., Hughes, A. C., Chesters, D., Pickering, J., Zhu, C.-D., & Ascher, J. S. (2020). Global Patterns and Drivers of Bee Distribution. Current Biology. doi:10.1016/j.cub.2020.10.053 https://doi.org/10.1016/j.cub.2020.10.053

Insects are the focus of many recent studies suggesting population declines, but even invaluable pollination service providers such as bees lack a modern distributional synthesis. Here, we combine a uniquely comprehensive checklist of bee species distributions and >5,800,000 public bee occurrence re…

Dorey, J. B., Fagan-Jeffries, E. P., Stevens, M. I., & Schwarz, M. P. (2020). Morphometric comparisons and novel observations of diurnal and low-light-foraging bees. Journal of Hymenoptera Research, 79, 117–144. doi:10.3897/jhr.79.57308 https://doi.org/10.3897/jhr.79.57308

Low-light adapted bees are substantially understudied components of the bee fauna, particularly in Australia. Whilst several species in Australia are thought to be adapted to low-light conditions, explicit records of these taxa actually foraging at twilight or night are absent from the scientific li…

随机森林(Random forest)模型在2001年发表后得到广泛的关注。由于随机森林可以进行回归和判别等多种统计分析,而且不受正态性、方差齐性和自变量独立性等参数检验的前提条件的制约,其应用日益普遍,有被看作万能模型的趋势。实际上,随机森林是一种特点鲜明的模型,应用局部优化拟合观察值,在分析有偏效应关系的数据时,其结果往往不准确。本文以蝉科(Cicadidea)物种的分布数据为例,比较了随机森林在回归分析时与多元线性回归、广义可加模型和人工神经网络模型的差别,在判别分析时与线性判别分析的差别,强调了随机森林预测时的碎片化特点。结果显示随机森林在处理有多元共线性和交互作用的数据时,以及在判别…

Iannella, M., D’Alessandro, P., & Biondi, M. (2019). Entomological knowledge in Madagascar by GBIF datasets: estimates on the coverage and possible biases (Insecta). Fragmenta Entomologica, 51(1), 1–10. doi:10.4081/fe.2019.329 https://doi.org/10.4081/fe.2019.329

Although Madagascar is one of the world’s most important biodiversity hotspots, the knowledge of its faunistic diversity is still incomplete, notwithstanding many field campaigns were organized since the 17th century until nowadays, leading to a huge number of vertebrate and invertebrate records. In…

Krechemer, F. da S., & Marchioro, C. A. (2020). Past, present and future distributions of bumblebees in South America: Identifying priority species and areas for conservation. Journal of Applied Ecology, 57(9), 1829–1839. doi:10.1111/1365-2664.13650 https://doi.org/10.1111/1365-2664.13650

Climate change has been commonly associated with a decline of bumble bee populations around the world. However, most information regarding the impacts of climate change on bumble bees derives from North America and Europe, and little is known about South American species. Here, we applied ecological…

Li, X., Li, B., Wang, G., Zhan, X., & Holyoak, M. (2020). Deeply digging the interaction effect in multiple linear regressions using a fractional-power interaction term. MethodsX, 7, 101067. doi:10.1016/j.mex.2020.101067 https://doi.org/10.1016/j.mex.2020.101067

In multiple regression Y ~ β0 + β1X1 + β2X2 + β3X1 X2 + ɛ., the interaction term is quantified as the product of X1 and X2. We developed fractional-power interaction regression (FPIR), using βX1M X2N as the interaction term. The rationale of FPIR is that the slopes of Y-X1 regression along the X2 gr…

Kilpatrick, S. K., Gibbs, J., Mikulas, M. M., Spichiger, S.-E., Ostiguy, N., Biddinger, D. J., & Lopez-Uribe, M. M. (2020). An updated checklist of the bees (Hymenoptera, Apoidea, Anthophila) of Pennsylvania, United States of America. Journal of Hymenoptera Research, 77, 1–86. doi:10.3897/jhr.77.49622 https://doi.org/10.3897/jhr.77.49622

Checklists provide information about the species found in a defined region and serve as baselines for detecting species range expansions, contractions, or introductions. Bees are a diverse and important group of insect pollinators. Although some bee populations are declining, these patterns are diff…

Medina, A. M., & Almeida-Neto, M. (2020). Grinnelian and Eltonian niche conservatism of the European honeybee (Apis mellifera) in its exotic distribution. Sociobiology, 67(2), 239. doi:10.13102/sociobiology.v67i2.4901 https://doi.org/10.13102/sociobiology.v67i2.4901

The understanding of how niche-related traits change during species invasion have prompted what is now known as the niche conservatism principle. Most studies that have tested the niche conservatism principle have focused on the extent to which the species’ climatic niches remain stable in their exo…