Abstract The distribution of hermaphroditism in fishes has traditionally been mainly explained by its dependence on biotic factors. However, correlates with major abiotic factors have not investigated a quantitative basis and at global scale. Here, we determined the incidence fish family species level, tested hypothesis that evolutionary relationships account for poor presence freshwater specie...

Oomycetes of the genus Saprolegnia are widespread in freshwater environment and among main pathogens causing economic losses salmonid aquaculture. Infections by mycotic agents fish farming generally considered to result from chronic stress poor condition associated with water quality problems, adverse environmental conditions, frequent/rough/incorrect handling, concurrent infections, physiologi...

Seaweeds are a major source of functional foods, nutraceuticals, and pharmaceuticals. Seaweed can be sustainably harvested through callus culture, which yields homogenous cells bioproducts under controlled conditions. Callus induction is crucial early step in culture influenced by several abiotic factors. This review aims to discuss the influence factors on seaweeds, prerequisite for applicatio...

Meiofauna is a group of heterotrophic organisms smaller than macroinvertebrates but larger microfauna and characterized by groups such as testate amoebae, ciliates, nematodes. They are link between bacteria resources macroinvertebrates. However, tropical meiofauna poorly studied; thus, our goal was to characterize meiofaunal community composition abundance assess potential environmental variabl...

Bacteria of the Bacillus genus can synthesize specific phytase enzymes. This property is especially important for soil bacteria. It helps to mineralize phytin and phytates provide these bacteria plants (in root zone which they live) with available phosphorus. Our previous studies have demonstrated that subtilis IMV B-7023 strain exhibits a activity use phytate as nutrition source. component «Az...

Aim In the face of global change, understanding causes range limits are one most pressing needs in biogeography and ecology. A prevailing hypothesis is that abiotic stress forms cold (upper latitude/altitude) limits, whereas biotic interactions create warm (lower) limits. new framework – Interactive Range-Limit Theory (iRLT) asserts positive factors such as food availability can ameliorate alon...