Jose Castresana

TL;DR: A recent large-scale phylogenomic study has shown the great degree of topological variation that can be found among eukaryotic phylogenetic trees constructed from single genes, highlighting the problems that could be associated with gene sampling in phylogenetic studies.

TL;DR: Gene database search using orcokinin precursor sequences of the crustacean Procambarus clarkii led to putative homologues found in non-crustacean groups, including the mosquito Anopheles gambiae and the nematode Caenorhabditis elegans.

TL;DR: It is shown that the Pyrenean desman has very low levels of genetic diversity compared to other mammals, and phylogenetic and dating analyses of the mitochondrial sequences reveal a strong phylogeographic structure of a Middle Pleistocene origin, suggesting that the main lineages arose during periods of glacial isolation.

TL;DR: The unambiguous substitutions on the branch leading to the most recent common ancestor (MRCA) of the mitochondrial inserts according to the parsimony criterium are determined and it is proposed that they are unlikely to have been caused by damage of the transposing nucleic acid and probably due to a change in the evolutionary mode after the transposition.

TL;DR: A multilocus simulation study using empirical values of nucleotide diversity and substitution rates obtained from a wide range of mammals and evaluated the performance of both gene tree and species tree approaches shows that the use of the combined information of both nuclear and mitochondrial markers in a species tree framework is the most efficient option to estimate recent speciation times and, consequently, the underlying species tree.