The multispecies coalescent process models the genealogical relationships of genes sampled from several species, enabling useful predictions about phenomena such as discordance between a gene tree and species phylogeny due to incomplete lineage sorting. Conversely, knowledge large collections trees can inform us aspects phylogeny, its topology ancestral population sizes. A fundamental open prob...

      Uricase or Urate oxidase (urate:oxygen oxidoreductase, EC 1.7.3.3), a peroxisomal enzyme which is found in many bacteria, catalyzes the oxidative opening of the purine ring of urate to yield allantoin, carbon dioxide, and hydrogen peroxide. In this study, the phylogeny of urate oxidase (uricase) producing bacteria was studied based on gene sequences of 16S rRNA and uricase protein. Repres...

     The family blenniidae comprises 58 genera and 406 species according to Eschmeyer and Fong (2018). Members of the family Blenniidae are small, scale-less and very agile fishes, inhabiting inshore, sub-tidal rocky substrata, and rock pools of the inter-tidal zone of tropical and sub-tropical marine waters (Randall, 1995). A few species are also reported from brackish and freshwaters (Hastin...

Phenetic analysis of morphological characters in different species of Onobrychis Miller sect. Hymenobrychis DC. (Fabaceae), classified them in two main groups based on corolla features. To determine the phylogenetic relationships among the 13 species, chloroplast DNA sequences were used. Analysis of these data resulted in a well-resolved and well-supported phylogeny. Phylogenies generated by ma...

In this study, mitochondrial DNA analysis using 16S ribosomal DNA (rDNA) was performed to investigate the phylogeny relationship of Trichiurus lepturus in the Persian Gulf compared to the other investigated area. The amplification of 16S rDNA resulted in a product of 600 bp in all samples. The results showed that the isolated strain belongs to T. lepturus showing 42 divergence sites among the s...

The host range of insect parasitoids and herbivores is influenced by both preference-related traits which mediate host choice behaviour, and performance-related traits which mediate the physiological suitability of the consumer-resource interaction. In a previous study, we characterised the influence of preference- and performance-related traits on the host range of the aphid parasitoid Binodox...

Kloks, Kratsch, and Spinrad showed how treewidth and minimum-fill, NP-hard combinatorial optimization problems related to minimal triangulations, are broken into subproblems by block subgraphs defined by minimal separators. These ideas were expanded on by Bouchitté and Todinca, who used potential maximal cliques to solve these problems using a dynamic programming approach in time polynomial in ...

The mouthpart structures of Endopterygota exhibit an extremely high diversity of form and function, yet they are composed of the same set of homologous components which are derived from arthropod limbs. Mouthpart features are prevalent in all studies of the high-level phylogeny of insects. Areas in which the phylogeny of Endopterygota has remained unresolved over the past decades concern the po...