Search results for "Monophyly"
showing 3 items of 133 documents
Molecular phylogeny of the spider family Sparassidae with focus on the genus Eusparassus and notes on the RTA-clade and ‘Laterigradae’
2013
The phylogeny of the spider family Sparassidae is comprehensively investigated using four molecular markers (mitochondrial COI and 16S; nuclear H3 and 28S). Sparassidae was recovered as monophyletic and as most basal group within the RTA-clade. The higher-level clade Dionycha was not but monophyly of RTA-clade was supported. No affiliation of Sparassidae to other members of the 'Laterigradae' (Philodromidae, Selenopidae and Thomisidae) was observed, and the crab-like posture of this group assumed a result of convergent evolution. Only Philodromidae and Selenopidae were found members of a supported clade, but together with Salticidae and Corinnidae, while Thomisidae was nested within the hig…
Understanding Mediterranean‐Californian disjunctions: molecular evidence from Chenopodiaceae‐Betoideae
2006
Chenopodiaceae subfam. Betoideae is distributed in both western Eurasia (four genera) and western North America (one genus). To understand the origin of this disjunction, the phylogeny of the subfamily was reconstructed and dated using ndhF, matK/trnK, tmL-trnF spacer, and ITS sequence variation, penalized likelihood and Langley-Fitch, and calibration with three different fossils. Maximum Parsimony and Maximum Likelihood analyses of the molecular data show that Betoideae are monophyletic, but that relationships of the Himalayan Acroglochin, traditionally included in Betoideae because of the shared possession of a circumscissile capsule, are uncertain. Among the betoidean genera, Beta (excl.…
Taxonomic uncertainty and a continental conundrum:Polypodium macaronesicumreassessed
2014
Data from the chloroplast trnL-F region are used to test the delimitation of putative diploid species in the Polypodium cambricum aggregate. In particular, we investigate the distinctiveness of the Macaronesian Polypodium macaronesicum, P. azoricum and the continental P. cambricum, investigate molecular diversity patterns within Macaronesia and establish the identity of putative P. macaronesicum material collected from an area in southern Spain, where it co-occurs with other Macaronesian elements. The analysis supports the distinction of Macaronesian and continental plants, with accessions from Macaronesia resolved as monophyletic. Greater haplotype diversity was found in Macaronesia than o…