The brown trout form the Salmo trutta complex, a diversified assemblage of salmonids. Its native area mainly covers Europe. It can develop three ecological forms or ecotypes, depending on its migratory behaviours: resident, anadromous (going to sea) and lacustrine lakes). sea is ecotype, born up river, living at where it reaches salmon size, returning river birth for spawning. Like other fish s...

Resources allocated to survival cannot be used increase fecundity, but the extent which this trade-off constrains adaptation depends on overall resource status. Adaptation local environmental conditions may therefore entail evolution of traits that amount resources available individuals (their status or ‘condition’). We examined relative contribution trade-offs and increased condition adaptive ...

german chamomile (matricaria chamomilla) is one of the most important industrial medicinal plant. inthis experiment the effects of foliar application of salicylic acid in different levels (0, 10-2, 10-4, 10-6) wereinvestigated on the floral traits and essential oil content of three ecotypes (italian, tehran, zabol) ofgerman chamomile. the results showed that maximum percentage of essential oil ...

fennel is one of the oldest herbs and possesses appealing flavor and beneficial medicinal effects. fennel(foeniculum vulgare mill.) belongs to the apiaceae family and its essential oil and seeds are used to flavor foods including meats, ice cream, candy, baked goods and condiments. the increasing commercial value of fennel necessitates the need to develop elite ecotypes with high essential oil ...

in order to determine the effect of different irrigation intervals on some morphophysiological traits of basil (ocimum basilicum l.), an experiment was conducted as factorial based on randomized complete block design with three replications under greenhouse conditions during 2010. treatments included five irrigation intervals with 4, 8, 12, 16 and 20 days intervals and two ecotypes of basil (gr...

background and aim: kelussia odoratissima mozaff. is an iranian endangered endemic plant which widely used in the central zagros region of iran as spice and medicinal herb for inflammatory and cardiovascular purposes. the aim of this study was to assess the essential oil compositions of birahgan ecotype of k. odoratissima in chaharmahal and bakhtiari province.methods: this is a fundamental rese...

We applied molecular, microscopic, and culture techniques to characterize the microbial communities in snow and air at remote sites in the Canadian High Arctic (Ward Hunt Island, Ellesmere Island, and Cornwallis Island, latitudes 74 to 83(o)N). Members of the Bacteria and Eukarya were prevalent in the snow, and their small subunit (SSU) rRNA gene signatures indicated strong local aerial transpo...

By using data collected during a continuous circumnavigation of the Southern Hemisphere, we observed clear patterns in the population-genetic structure of Prochlorococcus, the most abundant photosynthetic organism on Earth, between and within the three Southern Subtropical Gyres. The same mechanisms that were previously invoked to account for the vertical distribution of ecotypes at local scale...

Here we characterize regions of the genomes of eight members of the hyperthermophilic genus Thermotoga. These bacteria differ from each other physiologically and by 3-20% in gene content and occupy physically distinct environments in widely disparate regions of the globe. Among the four different lineages (represented by nine different strains) that we compare, no two are closer than 96% in the...

Common reed (Phragmites australis (Cav.) Trin. ex Steud.) is distributed widely throughout the world with various ecotypes. This research compares the functional traits and biomass allocation patterns of two contrasting reed ecotypes. Twelve pairs of aquatic and terrestrial reed samples were collected in northern China. Significant differences in functional traits between the two reed ecotypes ...