The Hubble Space Telescope has recently emerged as the first telescope to detect molecular signatures in an exoplanet via infrared spectroscopy. Molecular spectroscopy of exoplanets is demanding and requires an accurate determination and removal of the instrument systematics. Here we report on our effort to extract accurate exoplanet spectra from NICMOS spectrophotometry. We developed a standar...

YURI M. MARUSIK, GALINA N. AZARKINA & MIKHAIL M. OMELKO 1Institute for Biological Problems of the North, FEB RAS, Portovaya Street 18, Magadan 685000, Russia 2Department of Zoology & Entomology, University of the Free State, Bloemfontein 9300, South Africa 3Laboratory of Systematics of Invertebrate Animals, The Institute of Systematics and Ecology of Animals SB RAS, Frunze 11, Novosibirsk 63009...

Sympatric speciation is the splitting of one evolutionary lineage into two without the occurrence of geographic isolation. The concept has been intimately tied to entomology since the 1860s, when Benjamin Walsh proposed that many host-specific phytophagous insects originate by shifting and adapting to new host plant species. If true, sympatric speciation would have tremendous implications for o...

MaturaseK gene (MatK) of chloroplast is highly conserved in plant systematics which is involved in Group II intron splicing. The size of the gene is 1500 bp in length, located with in the intron of trnK. In the present study, matK gene from Zingiberaceae was taken for the analysis of variants, parsimony site, patterns, transition/tranversion rates and phylogeny. The family of Zingiberaceae comp...

in this study, the systematic position of acanthalburnus microlepis from kura and aras basins is clarified and some notes on the taxonomy of the acanthobrama species distributed in turkey are given. based on the morphological and osteological analyses, a high similarity between a. microlepis and acanthobrama members is found. some taxonomic information yielded from the examination of recent col...

background: caddisflies have significant roles in freshwater ecosystems. morphological identification is the major impediment in accurate species identification of hydropsychids. mitochondrial and nuclear markers are suitable for molecular systematics of these group of arthropods. methods: trichopteran specimens of lavasan district in northeastern tehran, iran were collected in 2012, and de­scr...

The compatibility of vanadium (V) during mantle melting is a function of oxygen fugacity (fO2): at high fO2’s, V becomes more incompatible. The prospects and limitations of using the V content of peridotites as a proxy for paleo-fO2 at the time of melt extraction were investigated here by assessing the uncertainties in V measurements and the sensitivity of V as a function of degree of melt extr...

Both the chloroplast and mitochondrial genomes are used extensively in studies of plant population genetics and systematics. In the majority of angiosperms, the chloroplast DNA (cpDNA) and mitochondrial DNA (mtDNA) are each primarily transmitted maternally, but rare biparental transmission is possible. The extent to which the cpDNA and mtDNA are in linkage disequilibrium is argued to be depende...