F
Fredrik Ronquist
Researcher at Swedish Museum of Natural History
Publications - 128
Citations - 84851
Fredrik Ronquist is an academic researcher from Swedish Museum of Natural History. The author has contributed to research in topics: Monophyly & Markov chain Monte Carlo. The author has an hindex of 54, co-authored 122 publications receiving 76188 citations. Previous affiliations of Fredrik Ronquist include Uppsala University & Florida State University.
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Three-Dimensional Cost-Matrix Optimization and Maximum Cospeciation
TL;DR: The new algorithms demonstrate that all existing event‐based protocols, as well as possible future methods based on more complicated process models, can be incorporated into the three‐dimensional cost matrix optimization framework.
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“Forms” of water mites (Acari: Hydrachnidia): intraspecific variation or valid species?
TL;DR: A number of what is now recognized as valid species of water mites (Hydrachnidia), but have in the past been treated as forms sympatrically occurring with their nominate species, are tested, revealing that some taxa genetically represent more than one species.
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Phylogeny of the parasitic wasp subfamily Euphorinae (Braconidae) and evolution of its host preferences
TL;DR: Parsimony‐based ancestral state reconstructions suggest that the ancestor of Euphorinae was a parasitoid of lepidopteran larvae, and that a host shift to larval Coleoptera occurred only in one clade of the Meteorini, some members of which secondarily shifted back to lar Valleysiderine hosts.
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Fast Fitch-Parsimony Algorithms for Large Data Sets
TL;DR: This paper discusses several time-saving modifications to published Fitch-parsimony tree search algorithms, including shortcuts that allow rapid evaluation of tree lengths and fast reoptimization of trees after clipping or joining of subtrees, as well as search strategies that allows one to successively increase the exhaustiveness of branch swapping.
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Redescription of Acanthaegilips Ashmead, 1897, with characterization of the Anacharitinae and Aspiceratinae (Hymenoptera: Cynipoidea: Figitidae)
TL;DR: It is concluded that, after removal of Seitneria and Paraegilips from the Anacharitinae, both subfamilies are well defined monophyletic groups and that Acanthaegilip belongs to the AnACHaritinee, within which it forms a monophyletsic group together with the South American genera Calofigites Kieffer, 1909 and Solenofigite Diaz, 1979.