4 documents found, page 1 of 1
Past and future climate effects on population structure and diversity of North ...
Tavares, Ana I; Assis, Jorge; Anderson, Laura; Raimondi, Pete; Coelho, Nelson; Paulino, Cristina; Ladah, Lydia; Nakaoka, MasahiroUnderstanding the impacts of past and future climate change on genetic diversity and structure is a current major research gap. We ask whether past range shifts explain the observed genetic diversity of surfgrass species and if future climate change projections anticipate genetic diversity losses. Our study aims to identify regions of long-term climate suitability with higher and unique seagrass genetic diversi...
Trans-Arctic asymmetries, melting pots and weak species cohesion in the low-dis...
Neiva, J.; Assis, Jorge; Fragkopoulou, Eliza; Pearson, Gareth; Raimondi, Peter T.; Anderson, Laura; Krause-Jensen, Dorte; Marbà, Núria; Want, AndrewAmphiboreal taxa are often composed of vicariant phylogroups and species complexes whose divergence and phylogeographic affinities reflect a shared history of chronic isolation and episodic trans-Arctic dispersal. Ecological filters and shifting selective pressures may also promote selective sweeps, niche shifts and ecological speciation during colonization, but these are seldom considered at biogeographical sc...
Increased evolutionary rates and conserved transcriptional response following a...
Sousa, Filipe; Neiva, J.; Martins, Neusa; Jacinto, Rita; Anderson, Laura; Raimondi, Peter T.; Serrao, Ester; Pearson, GarethGenome mergers between independently evolving lineages, via allopolyploidy, can potentially lead to instantaneous sympatric speciation. However, little is known about the consequences of allopolyploidy and the resultant "genome shock" on genome evolution and expression beyond the plant and fungal branches of the Tree of Life. The aim of this study was to compare substitution rates and gene expression patterns i...
Cryptic diversity, geographical endemism and allopolyploidy in NE Pacific seaweeds
Neiva, J.; Serrão, Ester; Anderson, Laura; Raimondi, Peter T.; Martins, Neusa; Gouveia, Licínia; Paulino, Cristina; Coelho, Nelson C.; Miller, Kathy A.Background Molecular markers are revealing a much more diverse and evolutionarily complex picture of marine biodiversity than previously anticipated. Cryptic and/or endemic marine species are continually being found throughout the world oceans, predominantly in inconspicuous tropical groups but also in larger, canopy-forming taxa from well studied temperate regions. Interspecific hybridization has also been fou...