The study was done to review some saltwater and freshwater fish species in the Niger Delta region of Nigeria. is one most prominent regions Nigeria, endowed with several water bodies that are distributed as like rivers, lakes, streams creeks. These ecosystems region, abundantly such Clarias gariepinus, Pila ovate, Labeo coubie, Synodontis budgetti eupterus. Apart from freshwaters, also has vast...

The most widespread and damaging fungal disease of the oat plant is crown rust. Resistance to rust pathogen, Puccinia coronata Cda. f. sp. avenae (Pca), at seedling stage Avena sterilis accessions from Polish national genebank was characterised by five North American pathotypes Pca diverse pathogenicity. pathogenicity determined on a series 34 differential lines carrying known resistance genes....

significant role in the rejection of the pathogen,i'2) Avenalumins consist of 3 components; the chemical structure ef the major component, avenalumin t, has been established to be 2-[2-(4hydroxyphenyl)ethenyl]-6-4H-3,1-benzoxazin-4-onc (1), based on an MS analysis of its acetylated derivative and identification of the methanolysis products.3) However, chem{cal studies by Crombie and Mistry4) ha...

A new species of the tetraodontid fish genus Canthigaster was discovered during a recent expedition to the Gambier Archipelago, French Polynesia. The new species, named Canthigaster criobe herein, is the only known species of Canthigaster having 12–14 brown stripes along the body (stripes beginning in front of the eye, extending along the body, and abruptly ending at the base of the caudal fin)...

Lysine carbamylation, a post-translational modification, facilitates metal coordination for specific enzymatic activities. We have determined structures of the vertebrate dihydropyrimidinase from Tetraodon nigroviridis (TnDhp) in various states: the apoenzyme as well as two forms of the holoenzyme with one and two metals at the catalytic site. The essential active-site structural requirements h...