Combined effects of cumulative nutrient inputs and biogeochemical processes that occur in freshwater under anthropogenic eutrophication could lead to myriad shifts in nitrogen (N):phosphorus (P) stoichiometry in global freshwater ecosystems, but this is not yet well-assessed. Here we evaluated the characteristics of N and P stoichiometries in bodies of freshwater and their herbaceous macrophyte...

Giorgos Chatzigeorgiou*, Elena Sarropoulou, Katerina Vasileiadou, Christina Brown, Sarah Faulwetter, Giorgos Kotoulas and Christos D. Arvanitidis 1 Biology Department, University of Crete, Heraklion, Greece 2 Hellenic Centre for Marine Research, Institute of Marine Biology, Biotechnology and Aquaculture, Heraklion, Greece 3 Department of Biology, Chemistry and Pharmacology, Institute of Biology...

The purpose of this study was to determine the effect different feeding on survival rate and growth snakehead fish (Channa striata) larvae. This research conducted using a completely randomized design (CRD) with 3 treatments replications. treatment consisted A artificial PF 0, B Daphnia C silk worms. results showed that provision types feed had significant survival, absolute weight growth, dail...

Parachanna obscura, the African snakehead fish, were randomly selected and subjected to parasitologic investigations. A total of three hundred and forty specimens were monthly obtained over a period of one year. Helminth infections was observed to have a prevalence of 5.9% which accounts for twenty of the specimens to be infected with gastrointestinal helminth parasites. Parachanna obscura harb...

Protein banding pattern of eight snakeheads – Channa species viz., Channa striatus, Channa marulius, Channa punctatus, Channa diplogramme, Channa bleheri, Channa gachua, Channa stewartii and Channa aurantimaculata collected from different regions of India were used to study the phylogenetic relationship among them. The banding pattern from muscle protein indicated a unique profile for each spec...

Snakehead rhabdovirus (SHRV) affects warm water fish in Southeast Asia and belongs to the genus Novirhabdovirus by virtue of its nonvirion gene (NV). Because SHRV grows best at temperatures between 28 and 31 degrees C, we were able to use the T7 expression system to produce viable recombinant SHRV from a cloned cDNA copy of the viral genome. Expression of a positive-strand RNA copy of the 11, 5...

Blotched snakehead virus (BSNV) is a member of the Birnaviridae family that requires a virally encoded protease known as VP4 in order to process its polyprotein into viral capsid protein precursors (pVP2 and VP3). VP4 belongs to a family of serine proteases that utilize a serine/lysine catalytic dyad mechanism. A mutant construct of VP4 with a short C-terminal truncation was overexpressed in Es...

The authors investigate the response of the Arctic Ocean freshwater budget to changes in the North Atlantic Oscillation (NAO) using a regional-ocean configuration of the Massachusetts Institute of Technology GCM (MITgcm) and carry out several different 10-yr and 30-yr integrations. At /68 (;18 km) resolution the model resolves the major Arctic transport pathways, including Bering Strait and the...