Search results for "Atlantic"
showing 10 items of 307 documents
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−…
Demographic effects of full vs. partial protection from harvesting: inference from an empirical before-after control-impact study on Atlantic cod
2015
Summary In recent years, marine protected areas (MPAs) excluding all or some fishing activities have become widely applied as a tool to rebuild marine ecosystems and fisheries, but still, our knowledge of the effects of MPAs on the demography of harvested populations remains scarce, especially in cases where partly protected areas are still supporting some fishing activities. Here, we investigated the influence of partial protection – excluding fixed gears such as gillnets and traps but still allowing a hook and line fishery – on the demography of Atlantic cod Gadus morhua along the Norwegian Skagerrak coast. To do so, we applied novel multi-event models to a 9-year data set containing both…
Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment
2014
Studying the sublethal effects of catch-and-release (C&R) is challenging, as there are several potential sources of bias. For example, if behavioural alterations immediately after the release event are to be studied, separation of tagging effects from actual C&R effects is required, which is a challenge in the wild, particularly in marine environments. To investigate the effects of C&R on Atlantic cod (Gadus morhua) in their natural environment, 80 cod were caught in fyke nets, fitted with acoustic transmitters, and released. After recovery from tagging and handling for at least 14 days, nine individuals were recaptured and released at least once during experimental angling, fo…
Local recruitment of Atlantic cod and putative source spawning areas in a coastal seascape
2021
Abstract Increased knowledge on connectivity is crucial to our understanding of the population dynamics, genetic structure, and biogeography of many coastal species. In coastal marine populations, the main factor for structuring is thought to be the degree of isolation and confinement, limiting genetic exchange between populations. However, many offshore populations use the coastal areas as nursery grounds, but venture back to natal spawning grounds as adults. Therefore, increased knowledge on the connectivity between coastal and offshore populations is crucial to ensure correct assessment of coastal living resources. Here, we combine genetic assignment data of Atlantic cod recruits sampled…
Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics
2021
Salmon farming in marine net pens is a major activity in many temperate regions. This industry may affect coastal ecosystems in several ways, such as with waste pollution and parasite spillover. Less is known about the extent to which salmon farming disrupts the use of inshore spawning grounds by wild fish, such as the Atlantic cod Gadus morhua. Acoustic telemetry was therefore used to explore cod space use during the spawning season in a coastal region in mid-Norway with multiple salmon farms. Acoustic receivers were placed in clusters at 5 known cod spawning grounds and 6 nearby salmon farms. Data from 481 adult cod caught at the spawning grounds during 2017-2019 and equipped with acousti…
Dimensión socio-laboral de las relaciones comerciales trasatlánticas: algunas lecciones del pasado.
2022
En la cumbre UE-EE.UU. del pasado 15 de junio de 2021, la Unión Europea y los Estados Unidos realizaron una declaración conjunta en la que anunciaron una asociación transatlántica renovada para la era posterior a la pandemia. De manera que en el momento en el que se refuerzan las negociaciones comerciales entre la UE y EE.UU. vale la pena analizar hasta dónde se llegó en las negociaciones del Acuerdo Transatlántico sobre Comercio e Inversión en el marco de la OMC, en particular en relación a los aspectos más controvertidos desde la perspectiva social. Lo que incluye un análisis comparado específicamente enfocado al tratamiento del desplazamiento de trabajadores en el AGCS y en la Directiva …