Historical trends in crustacean systematics

Historical Trends in Crustacean Systematics

Using a database that includes nearly half (46%) of the estimated 68,000 described species of extant crustaceans, as well as the names of the authors who described each species and the date of description, we plotted the number of species described vs. year of description to examine rates of, and trends in, crustacean species descriptions over time. Plots were generated for all crustaceans and ...

CRUSTACEAN PHYLOGENETIC SYSTEMATICS AND OPSIN EVOLUTION by

CRUSTACEANS AND OPSIN EVOLUTION Megan L. Porter Department of Microbiology and Molecular Biology Doctor of Philosophy Composed of a chromophore bound to an integral membrane protein (opsin), visual pigments are phenotypically characterized by the wavelength of maximal absorption (λmax). The underlying molecular mechanism controlling λmax is the interaction between the opsin amino acid sequence ...

Modern Architecture in Nigeria and It’s Trends in Historical Buildings (Failure of modernist in Conservation andRestoration of Historical Buildings)

Modern architecture has vital impact in Nigerian architecture even though there are somesocio-cultural and religious factors and elements of traditional architecture and use of traditional materials andprinciples of design that still exist. This paper will be discussing on how modern architecture failed in the aspectthe of conservation and restoration of palace buildings which are the focal poi...

Phylogenetic Systematics and Biogeography: Using Cladograms in Historical Biogeography Methods

Molecular systematics and historical biogeography of tree boas (Corallus spp.).

Inferring the evolutionary and biogeographic history of taxa occurring in a particular region is one way to determine the processes by which the biodiversity of that region originated. Tree boas of the genus Corallus are an ancient clade and occur throughout Central and South America and the Lesser Antilles, making it an excellent group for investigating Neotropical biogeography. Using sequence...