1,721,059 research outputs found
Isolation of microsatellite loci from the endemic and endangered Adriatic sturgeon (Acipenser naccarii).
No full textWith the aim of elaborating a breeding plan on a captive stock of the highly endangered Adriatic sturgeon (Acipenser naccarii), a total of 10 polymorphic microsatellite loci were isolated from an enriched library. The results of cross amplification of additional 8 loci previously isolated from A. oxyrinchus, A. fulvescens and Scaphyrinchus platorhynchus are also reported. Given the tetraploid condition of the species the genetic variability was estimated basing on the number of alleles per individuals and the average band sharin
Mean spherical model for strongly coupled dusty plasmas
No full textA solution of the mean spherical model is presented for particles interacting with a pair potential which is repulsive at short-range and attractive at long-range. The solution can be used for the description of the structure of strongly-coupled dusty plasmas, represented as one component systems of dust particles with an interaction potential determined by the plasma dynamics; a screened Coulomb repulsive interaction at short distances and a long-range attraction due to a screened “shadow effect” on the plasma fluxes to the dust particles. A comparison with recent experimental results shows a better agreement when the attractive potential is present
Isolation of microsatellite loci from the endemic and endangered Adriatic sturgeon (Acipenser naccarii)
No full textWith the aim of elaborating a breeding plan on a captive stock of the highly endangered Adriatic sturgeon (Acipenser naccarii), a total of 10 polymorphic microsatellite loci were isolated from an enriched library. The results of cross amplification of additional 8 loci previously isolated from A. oxyrinchus, A. fulvescens and Scaphyrinchus platorhynchus are also reported. Given the tetraploid condition of the species the genetic variability was estimated basing on the number of alleles per individuals and the average band sharing
Ozone trend and effects on Trifolium repens L. as bioindicator in Mediterranean rural areas.
No full textOzone effects on vegetation in three different localities of Campania region
No full textOzone is a secondary pollutant with a mobility and distribution higher than its precursors (VOCs, NOx), which causes injuries to vegetation in rural areas. The experiment was carried out over three years (2000-2002) in three localities of the Campania region characterized by different elevations (plain and hill) and atmospheric pollution (sub-urban and rural). The aim of the present research was to study the pattern of ozone concentration and its injuries to plants and to compare the response of two white clover biotypes with different sensitivities to ozone, which were grown according to the experimental protocol defined by the ICP-Vegetation. In this trial, the pollution threshold (40 ppb) was always overcome. The highest ozone concentrations were recorded during the first year and the sub-urban site was the more polluted. The daily trend of ozone shows reduced nighttime degradation at the hilly sites, which tended to have relatively high concentrations also during the night. This involves the importance to consider also nocturnal stomatal conductance for studying ozone uptake through stomata and damage to vegetation in hill or mountain localities. Ozone injuries were estimated using the yield ratio of the sensitive to the resistant biotype [1-(S/R)*100]. Average yield losses were 20% without differences among the three localities, confirming that ozone pollution can cause injuries to plants also in rural areas located faraway from the emission sources of atmospheric pollutants
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