Search results for "Atlanti"
showing 10 items of 341 documents
Variation in spawning time promotes genetic variability in population responses to environmental change in a marine fish.
2015
Common-garden experiments suggest that the response of Atlantic cod larvae to temperature differs among populations that spawn at different times of year. Populations appear to be adapted to the temperatures experienced during the larval stage at a small spatial scale, despite a lack of physical barriers to gene flow.
A legacy of contrasting spatial genetic structure on either side of the Atlantic-Mediterranean transition zone in a marine protist
2012
The mechanisms that underpin the varied spatial genetic structures exhibited by free-living marine microorganisms remain controversial, with most studies emphasizing a high dispersal capability that should redistribute genetic diversity in contrast to most macroorganisms whose populations often retain a genetic signature of demographic response to historic climate fluctuations. We quantified the European phylogeographic structure of the marine flagellate Oxyrrhis marina and found a marked difference in spatial genetic structure, population demography, and genetic diversity between the northwest Atlantic and Mediterranean Sea that reflects the persistent separation of these regions as well …
Taxonomic Status of Neoechinorhynchus Agilis (Acanthocephala, Neoechinorhynchidae), with a Description of two New Species of the Genus from the Atlan…
2014
2 Section of Hydrobiont Diseases, Pacifi c Research. Fisheries Center, Shevchenko str., 4, Vladivostok, 690950 Russia Taxonomic Status of Neoechinorhynchus agilis (Acanthocephala, Neoechinorhynchidae), with a De- scription of Two New Species of the Genus from the Atlantic and Pacifi c Mullets (Teleostei, Mugili- dae). Tkach, Ie. V., Sarabeev, V. L., Shvetsova, L. S. — Th e wide variability in morphological features, geographical and host ranges of mullet acanthocephalan parasite Neoechinorhynchus agilis (Rudolphi, 1819), raises the question of taxonomic status of this species. Rudolphi's type and Yamagutis voucher specimens, as well as our own material from the WW Pacifi c and NE Atlantic r…
Linee progettuali per un “Atlante Etnomusicale della Sicilia”
2012
Il testo parte dalla revisione della nozione di "atlante" nel campo degli studi etnomusicologici e prosegue passando in rassegna quei lavori che hanno tentato in varia misura di offrire quadri unitari delle forme e dei generi della musica popolare siciliana. L'autore suggerisce quindi le linee progettuali per un possibile Atlante Etnomusicale della Sicilia, individuando alcuni esempi emblematici dell'attuale vitalità dei comportamenti musicali di tradizione orale e indicando diverse fonti di approfondimento in una prospettiva diacronica.
Macedonia and its path towards European integration: Advances, obstacles and implications for the Balkan region
2011
This article analyses the progress made and obstacles encountered by the process to bring Macedonia into the European Union. After studying the history of relations between Macedonia and the EU and the Union’s new strategies for enlargement with respect to the Balkans, the author specifically analyses the problems which have, to date, hampered the progress of Macedonia’s candidacy (one particularly important example being the dispute with Greece over its name), as well as its strengths, paying particular attention to the backing given by public opinion and numerous EU-related areas. Finally, the author reflects on the negative consequences that the current blockade could have for the stabil…
A taxonomic revision helps to clarify differences between the Atlantic invasive
2017
Abstract Ptilohyale explorator (formerly Parhyale explorator), described by Arresti (1989), can be considered to be a synonym of west-Atlantic Ptilohyale littoralis (Stimpson, 1853), based on morphological observations of paratypes and specimens recently collected in the type locality of Ptilohyale explorator. The first collections of Ptilohyale littoralis, from the eastern Atlantic were from the port of Rotterdam (The Netherlands) in 2009 and later in Wimereux, Opal Coast (France) in 2014; however, the synonymy of Ptilohyale explorator with Ptilohyale littoralis backdates to the first European record of Ptilohyale littoralis in 1985 at La Vigne, Bay of Arcachon (France). This indicates tha…
Eurosceptic Attitudes Towards the Transatlantic Trade and Investment Partnership: Who are the Trendsetters and Followers?
2020
Since the Hooghe et al.(2002) publication about party positions on European integration, a comparison of radical right and radical left Eurosceptic parties is not often conducted. In literature about Euroscepticism, the image of the horseshoe or “inverted U” illustrates the orientation of Euroscepticism among parties without any deeper analysis. This paper tries fill the research gap by investigating whether these two Eurosceptic groups are distinct from each other in the area of EU trade policy by analyzing the debate surrounding the Transatlantic Trade and Investment Partnership (TTIP). Using European Parliament debates about this EU-US partnership, the author tries give answers to the fo…
Un ponte ancora aperto? Alcune note sull’emigrazione siciliana verso gli Stati Uniti durante il fascismo
2018
During the 1920s, after the promulgation by US government of the Quota Acts, and after the new fascist policies about emigration in Italy (1926), we register a dramatic decrease of the transatlantic migration flows from Italy to the US. Focusing on the case of Sicily, one of the region which had sent more emigrants to the US during the Great Migration, this essay analyses the issue of migratory waves from Southern Italy to the US during the Fascism. In fact, despite of the reshaping of migration policies, some traditional networks between Sicily and America are still working. For example, some new researches about transnational Mafia reveal the existence of dynamic Sicilian-American network…
PESI - a taxonomic backbone for Europe
2015
Reliable taxonomy underpins communication in all of biology, not least nature conservation and sustainable use of ecosystem resources. The flexibility of taxonomic interpretations, however, presents a serious challenge for end-users of taxonomic concepts. Users need standardised and continuously harmonised taxonomic reference systems, as well as highquality and complete taxonomic data sets, but these are generally lacking for nonspecialists. The solution is in dynamic, expertly curated web-based taxonomic tools. The Pan-European Species-directories Infrastructure (PESI) worked to solve this key issue by providing a taxonomic e-infrastructure for Europe. It strengthened the relevant social (…
Seminal plasma biochemistry and spermatozoa characteristics of Atlantic cod (Gadus morhua L.) of wild and cultivated origin
2011
Abstract Our objectives were to compare spermatozoa activity, morphology, and seminal plasma (SP) biochemistry between wild and cultivated Atlantic cod ( Gadus morhua ). Swimming velocities of wild cod spermatozoa were significantly faster than those of cultivated males. Wild males had a significantly larger spermatozoa head area, perimeter, and length, while cultivated males had more circular heads. Total monounsaturated fatty acids and the ratio of n−3/n−6 were significantly higher in sperm from wild males, while total n−6 from cultivated males was significantly higher than the wild males. Significantly higher concentrations of the fatty acids C14:0, C16:1n−7, C18:4n−3, C20:1n−11, C20:1n−…