Post-divergence gene flow can trigger a number of creative evolutionary outcomes, ranging from the transfer of beneficial alleles across species boundaries (i.e., adaptive introgression) to the formation of new species (i.e., hybrid speciation). While neutral and adaptive introgression has been broadly documented in nature, hybrid speciation is assumed to be rare and the evolutionary and ecological context facilitating this phenomenon still remains controversial. Through combining genomic and phenotypic data, we evaluate the hypothesis that the...
Semi‐quantitative metabarcoding reveals how climate shapes arthropod community assembly along elevation gradients on Hawaii IslandJun Ying Lim, Jairo Patiño, Suzuki Noriyuki, Henrik Krehenwinkel, Luis Simmari, Rosemary Gillespie, Luis Cayetano & Rosemary G. Gillespie
Spatial variation in climatic conditions along elevation gradients provides an important backdrop by which communities assemble and diversify. Lowland habitats tend to be connected through time, whereas highlands can be continuously or periodically isolated, conditions that have been hypothesized to promote high levels of species endemism. This tendency is expected to be accentuated among taxa that show niche conservatism within a given climatic envelope. While species distribution modeling approaches have allowed extensive exploration of niche...
Image-based taxonomic classification of bulk biodiversity samples using deep learning and domain adaptationTomochika Fujisawa, Víctor Noguerales, Emmanouil Meramveliotakis, Anna Papadopoulou & Alfried Vogler
Complex bulk samples of insects from biodiversity surveys present a challenge for taxonomic identification, which could be overcome by high-throughput imaging combined with machine learning for rapid classification of specimens. These procedures require that taxonomic labels from an existing source data set are used for model training and prediction of an unknown target sample. However, such transfer learning may be problematic for the study of new samples not previously encountered in an image set, e.g....
Data from: Hidden island endemic species, and their implications for cryptic speciation within soil arthropodsCarmelo Andújar Fernández, Antonio Perez Delgado, Brent Emerson, Paula Arribas, Yurena Arjona, Daniel Suárez Ramos, Carles Hernando & Heriberto López
Aim: Specialisation to the soil environment is expected to constrain the spatial scale of diversification within animal lineages. In this context, the existence of flightless arthropod lineages, adapted to soil environments, but with broad geographic ranges, represent something of an anomaly. Here we investigate the diversification process within one such ‘anomalous’ soil specialist: Geomitopsis franzi Coiffait, 1978, an eyeless and flightless beetle species strongly adapted to the endogean environment but distributed across several oceanic islands....
Dispersal ability is known to influence geographic structuring of genetic variation within species, with a direct relationship between low vagility and population genetic structure, which can potentially give rise to allopatric speciation. However, our general understanding of the relationship between dispersal ability, population differentiation and lineage diversification is limited. To address this issue, we sampled mitochondrial DNA variation within lineages of beetles and spiders across the Canary Islands to explore the relationships between dispersal ability,...
Data from: Community assembly and metaphylogeography of soil biodiversity: insights from haplotype-level community DNA metabarcoding within an oceanic islandCarmelo Andújar Fernández, Paula Arribas, Heriberto López, Yurena Arjona, Antonio José Pérez-Delgado, Pedro Oromí, Alfried P. Vogler & Brent C. Emerson
Most of our understanding of island diversity comes from the study of aboveground systems, while the patterns and processes of diversification and community assembly for belowground biotas remain poorly understood. Here we take advantage of a relatively young and dynamic oceanic island to advance our understanding of eco-evolutionary processes driving community assembly within soil mesofauna. Using whole organism community DNA (wocDNA) metabarcoding and the recently developed metaMATE pipeline, we have generated spatially explicit and reliable...
Data from: The role of nutritional impairment in carbon-water balance of silver fir drought-induced diebackEster González De Andrés, Antonio Gazol, José Ignacio Querejeta, José M. Igual, Michele Colangelo, Raúl Sánchez-Salguero, Juan Carlos Linares & J. Julio Camarero
Rear-edge populations at the xeric distribution limit of tree species are particularly vulnerable to forest dieback triggered by drought. This is the case of silver fir (Abies alba) forests located in the southwestern of Europe. While silver fir drought-induced dieback patterns have been previously explored, information on the role played by nutritional impairment is lacking despite its potential interactions with tree carbon-water balances. We performed a comparative analysis of radial growth, intrinsic water-use efficiency (iWUE),...
Instituto de Productos Naturales y Agrobiología7
Natural History Museum2
Estación Biológica de Doñana1
University of California, Berkeley1
Centro de Edafología y Biología Aplicada del Segura1
University of La Laguna1
National University of Singapore1