REVIEW OF THE EXPERIMENTAL SETTING OF POLYETHYLENE BAGS - COLLECTORS FOR COLLECTING THE SHELLFISH LARVAE

U radu se opisuju i analiziraju dosadašnja istraživanja u vezi s eksperimentalnim postavljanjem polietilenskih vreća kao kolektora za prikupljanje mlađi školjkaša. Ukratko se opisuju osnove tehnologije uzgoja školjkaša te se iscrpnije obrađuju literaturni podatci u vezi s mjestom, sezonom i načinom postavljanja eksperimentalnih kolektora. Rezultati dosadašnjih istraživanja mogu se iskoristiti kao odrednice, a za razvoj komercijalnog uzgoja školjkaša na svakom se novom lokalitetu preporučuje eksperimentalno postavljanje kolektora.This work describes and analyses former researches regarding the experi mental setting of polyethylene bags as collectors for collecting the shellfish fry. Basic shellfish cultivation technologies are being briefly described and the literature data regarding the place, season and way of setting the experimental collectors are being detailed. The results of the former researches can be used as references while for the development of the commercial shellfish cultivation on each new location the experimental collec tor setting is recommended

An energy budget for the subtidal bivalve Modiolus barbatus (Mollusca) at different temperatures

Clearance rates, respiration rates and food absorption efficiencies of the commercially interesting subtidal bivalve Modiolus barbatus were measured at different temperatures under laboratory conditions and scope for growth calculated. Clearance rates were highest at temperatures from 20°C to 28°C, whereas respiration rate was maximal at 9°C and minimal at 26°C. Highest mean values of absorbed energy occurred at 20°C and 26°C. Scope for growth trend had negative values at 9°C, 15°C and 28°C and positive values at temperatures 20°C and 26°C. The profitable thermal window for M. barbatus to have energy sufficient for growth and reproduction corresponded to <5 months per year. Seawater temperature increases will potentially impact the ecophysiological responses of subtidal M. barbatus causing life history traits to change with important repercussions for subtidal biodiversity in the Mediterranea

Species richness in North Atlantic fish: Process concealed by pattern

International audiencePrevious analyses of marine fish species richness based on presence‐absence data have shown changes with latitude and average species size, but little is known about the underlying processes. To elucidate these processes we use metabolic, neutral and descriptive statistical models to analyse how richness responds to maximum species length, fish abundance, temperature, primary production, depth, latitude and longitude, while accounting for differences in species catchability, sampling effort and mesh size

German evidence-based guidelines for the treatment of Psoriasis vulgaris (short version)

Psoriasis vulgaris is a common and chronic inflammatory skin disease which has the potential to significantly reduce the quality of life in severely affected patients. The incidence of psoriasis in Western industrialized countries ranges from 1.5 to 2%. Despite the large variety of treatment options available, patient surveys have revealed insufficient satisfaction with the efficacy of available treatments and a high rate of medication non-compliance. To optimize the treatment of psoriasis in Germany, the Deutsche Dermatologische Gesellschaft and the Berufsverband Deutscher Dermatologen (BVDD) have initiated a project to develop evidence-based guidelines for the management of psoriasis. The guidelines focus on induction therapy in cases of mild, moderate, and severe plaque-type psoriasis in adults. The short version of the guidelines reported here consist of a series of therapeutic recommendations that are based on a systematic literature search and subsequent discussion with experts in the field; they have been approved by a team of dermatology experts. In addition to the therapeutic recommendations provided in this short version, the full version of the guidelines includes information on contraindications, adverse events, drug interactions, practicality, and costs as well as detailed information on how best to apply the treatments described (for full version, please see Nast et al., JDDG, Suppl 2:S1–S126, 2006; or http://www.psoriasis-leitlinie.de)