The morphologic and genetic variations of Engraulis encrasicolus (L. 1758) were studied based on morphometric, meristic and allozyme analyses. Samples were collected throughout the Black, Marmara and Aegean Seas. Discriminant function analysis of both morphometric and meristic characters indicated the existence of four morphologically differentiated groups of E. encrasicolus. The Aegean Sea and...

Citation: Guraslan C, Fach BA and Oguz T (2017) Understanding the Impact of Environmental Variability on Anchovy Overwintering Migration in the Black Sea and its Implications for the Fishing Industry. Front. Mar. Sci. 4:275. doi: 10.3389/fmars.2017.00275 Understanding the Impact of Environmental Variability on Anchovy Overwintering Migration in the Black Sea and its Implications for the Fishing...

Here we present a case study toward producing quantitative scientific advice on the application of the EU Common Fisheries Policy (CFP) in the Black Sea. We provide estimates of fishing mortality rates at levels which will lead to rebuilding and maintaining stocks above biomass levels that could produce maximum sustainable yield (MSY) under the IPCC RCP4.5 future climate scenario together with ...

The composition of sterols, volatiles and some polar compounds from three Corallina samples (C. granifera and C. mediterranea from the Black Sea and C. mediterranea from the Mediterranean Sea) was established. The sterol composition of the Black Sea samples was similar but it differs from that of the Mediterranean sample. The composition of the volatiles was very complex. The main groups of con...

by Alexandra f semi-closed tideless basin bordering six Bologa countries, the Black Sea is considered a "unicum hydrobiologicum" because of its physical, chemical, and biological peculiarities. Unlike any other sea, the Black Sea is permanently deficient in oxygen, or anoxic, below a depth of 150-200 meters. The Sea's radioactivity levels have been the subject of rigorous research in the ripari...

Gelatinous zooplankton outbreaks have increased globally owing to a number of human-mediated factors, including food web alterations and species introductions. The invasive ctenophore Mnemiopsis leidyi entered the Black Sea in the early 1980s. The invasion was followed by the Azov, Caspian, Baltic and North Seas, and, most recently, the Mediterranean Sea. Previous studies identified two distinc...

Recent studies have indicated that chemoautotrophic Epsilonproteobacteria might play an important role, especially as anaerobic or microaerophilic dark CO(2)-fixing organisms, in marine pelagic redoxclines. However, knowledge of their distribution and abundance as actively CO(2)-fixing microorganisms in pelagic redoxclines is still deficient. We determined the contribution of Epsilonproteobacte...

The overarching goal is to elucidate the complex dynamics of outflows connecting basins through straits. The long term scientific goals are to (a) understand the physical mechanisms that control the exchange between two marginal seas with substantially different water mass characteristics (Aegean Sea and Black Sea) through a complex system of straits (Turkish Straits System); (b) quantify the p...

In the present work the Black Sea wave climate is assessed using a total of 38 years of data (1979–2016). As a first step, the long-term variations of the main wave parameters were evaluated using data provided by the European Center for Medium-Range Weather Forecasts (ECMWF). Based on these values, the nearshore and offshore conditions from the Black Sea were evaluated. Moreover, the Sea of Az...

Muscle proteins of the European anchovy Engraulis encrasicolus L. were analyzed using starch gel electrophoresis and isoelectric focusing on thin polyacrylamide ampholine gel. Twenty-two protein loci were analyzed and polymorphism was found in six of them. Based on genetic-biochemical data, we hypothesize that there are two anchovy subspecies, European and African. The former inhabits the Atlan...