The suitability of marine limpet shells for radiocarbon dating may depend on potential offsets due to diet and habitat, especially with regard to grazing mollusks on carbonate substrates (Dye 1994; England et al. 2013). A previous study on one grazing limpet species on the coast of Ireland found no offsets from carbonate substrates (Allen et al. 2019), but a similar study from mediterranean coasts found significant offsets on carbonate substrates (Ferguson et al. 2011). We carried out a new study of radiocarbon and stable carbon isotopes, using multiple species of mollusks collected live from the coasts of Gibraltar and Sardinia, from both carbonate and non-carbonate substrates. The 14C results indicate that one species, inhabiting the upper shore, has a significant offset at the carbonate locations. This species, Patella rustica, has adapted to tolerate desiccation and may have biological traits that result in higher metabolic-derived carbon incorporated in its shell. The results of this preliminary study imply that selected species of grazing mollusks are suitable for radiocarbon dating, even in areas of carbonate geology.

This study provides the first results on the population dynamics of Sphyraena sphyraena (Linnaeus, 1758) in the western Mediterranean. Otoliths and scales reading were used for its age and growth investigation in Eastern coast of Algeria. The monthly evolution in marginal increment data of scales and otoliths revealed that only one annulus is formed per year in February. Fish length and radii of the scales or otoliths were closely correlated. Both methods showed four age groups. ANOVA test (P < 0.05) revealed insignificant differences between both estimates of length at age results. Growth parameters estimated using length-at-age data from both methods confirming the age determination results. The total mortality (Z ), natural mortality (M ), and fishing mortality (F ) were estimated at 1.19 year−1, 0.826 year−1, and 0.363 year−1, respectively. The growth performance index (Ø ) was 2.57. The estimated exploitation ratio (E ) was 0.305. The length–weight relationship is EW = 0.0104 TL2.702, showed that the growth rates were negative allometric. The results revealed the compatibility of otoliths and scales reading for assessment studies of Sphyraena sphyraena .

Ladies and Gentlemen, on my own behalf as a professor of international relations, and on behalf of my host institution here, IBEI, the Barcelona Institute for International Studies, I would like to thank you for the kind invitation to address your Graduate Conference here today, and to share some thoughts, born of the intersection of my field of specialisation, International Relations, with the experience of living, writing, research, working and listening in this city of Barcelona, and in the Catalan and Spanish contexts, these past 4 years.

This essay deals with the influence of Adam Smith—at the end of the eighteenth century and during the French Revolution and the Napoleonic wars—on the constitutional projects and public debates through which reformers of southern Europe tried to import and translate British society. I focus on the intellectual filters that affected the reception of Smithian thought, particularly the political and ideological aim to realize a Whig social order, that induced the Mediterranean elite to link the Wealth of Nations with the thought of Edmund Burke and Arthur Young. The result is a moderate and conservative profile of Smithian liberalism that was is in tune with the ideological trend of the nineteenth century.

Between the late Middle Ages and the early modern period, large quantities of wax were exported from the Maghrib to Europe. In the Maghrib, both raw wax and wax candles were involved in various social interactions that transcended mere environmental and economic considerations. For some Muslims, wax came to index Christianity, and its significance during the celebration of the Prophet’s birthday was critiqued as a corrupt innovation. At the same time, to prevent the facilitation of Catholic devotion—and because wax was deemed war material—the sale of wax to Christians was forbidden. Nevertheless, wax remained a profitable product sold to Christians in significant quantities. The anxiety surrounding the movement of wax and the attempts to regulate it indicate that for Muslims, wax served as a religious boundary marker. Christians too utilized the substance to reinforce communal boundaries. Catholics in the Maghrib—captives, clergy, and merchants—used wax to establish and express confessional divides, aiming to deter Catholic captives from converting to Islam. Priests distributed blessed candles to captives, who in turn donated wax to the clergy. Moreover, priests gifted candles to Algerian dignitaries, a practice opposed by the papacy. Wax formed invisible, often unintended connections between Muslim theologians and rulers, Catholic and Muslim captives, slaves, wax makers, merchants, and redeemers. These entanglements sparked anxiety, a sense of impurity, and a drive to reinforce religious boundaries. This article explores a fragmented history of these connections and relationships and argues that the failed attempts to regulate this circulation fostered new entanglements.

The Mediterranean and the Middle East represent unique biogeographical regions that significantly shaped the evolutionary history and particular diversity of their associated organisms. However, knowledge on the copepods parasitizing freshwater fishes in these regions is limited. This study aims to investigate the diversity and phylogeny of parasitic copepods in freshwater fishes across the Mediterranean and the Middle Eastern regions. A total of 169 freshwater fish species from the Mediterranean and Middle East were examined for metazoan parasites, yielding over 1000 parasitic copepods. A thorough morphological evaluation combined with molecular analyses of partial fragments of rDNA (18S and 28S) and mitochondrial cytochrome c oxidase subunit I (COI) led to the identification of 7 species of Ergasilidae and 3 species of Lernaeidae. These findings include the descriptions of 2 new species: Ergasilus italicus n. sp. parasitizing South European nase, Protochondrostoma genei (Bonaparte, 1839), in Italy and Pseudolamproglena zahrziensis n. sp. found in yellow barbel, Carasobarbus luteus (Heckel, 1843), in Iraq. New host and geographical records, along with molecular data are provided for 8 previously described species – Ergasilus barbi Rahemo, 1982, Ergasilus briani Markevich, 1933, Ergasilus lizae Krøyer, 1863, Ergasilus rostralis Ho, Jayarajan & Radhakrishnan 1992, Neoergasilus japonicus (Harada, 1930), Paraergasilus longidigitus Yin, 1954, Lamproglena pulchella von Nordmann, 1832 and Lernaea cyprinacea Linnaeus, 1758.

This article argues that a relational and trust-based understanding of fides can explain its use and impact in a variety of secular and religious settings, but particularly between members of different religious communities and especially in commercial contracts. The Latin word fides can be translated in a variety of ways, from ‘faith’, ‘trust’ and ‘trustworthiness’, to ‘proof’ and ‘belief’. Within these meanings there are complex religious and legal implications. Most understandings focus on the ways in which the term defines and creates relationships within a community. Contracts from thirteenth- and fourteenth-century Barcelona and Mallorca demonstrate the meaning and significance of the use of the term between merchants and investors from different religious communities. The article provides a new understanding of the place of faith language within the creation of trusting relationships.

Archaeologists have long investigated the rise of inequality in prehistoric Europe. I argue that images of steadily increasing inequality are usually based on cherry-picking outstanding cases and selectively interpreting the results. Based on a large-scale qualitative assessment of the Central Mediterranean, I make two claims. First, a broad review of evidence suggests that social inequality was not a major organizing principle of most prehistoric societies. Instead, throughout prehistory, inequality formed part of a heterogeneous, heterarchical social order. Second, this was not simply due to historical chance or stagnation. As my outline of the “people’s history” of prehistoric Europe suggests, many of the archaeologically most visible developments in every period were actively aimed at undermining, encapsulating, or directing the potential development of hierarchy. In this sense, Europe’s long prehistory of limited and ambiguous hierarchy does not represent a failure of social evolution but rather widespread success in developing tactics for maintaining equality.

A previously unknown raptor migration hot spot has been identified in southern Greece. During the post-breeding migration of 2024, a total of 11,790 individuals were recorded in 15 days, including 11,606 European Honey Buzzards Pernis apivorus. GPS tracking data from Finnish and Hungarian populations further highlight the site’s significance, suggesting that it could become the third migration hot spot for the species in the Mediterranean, alongside the Straits of Gibraltar and Messina. Plans to develop a wind farm in the area raise concerns due to its crucial role in the beginning of the long sea crossing to Libya.

In recent years, the number of migrant deaths and disappearances in the Mediterranean and on the Atlantic coasts has risen steadily. The arrival of small boats with migrants on board on the Spanish and Italian coasts has received a lot of media attention, and European Governments are investing more than in the past to stop unauthorized arrivals on their shores. Certain narratives from governments and officials of international organizations attribute these deaths to “smugglers” and the dangerous routes they take. However, this article provides evidence that the higher mortality rates are the result of changes in border controls following bilateral agreements between the European Union and Morocco after 2018. By analyzing data from official statistics, microdata, and data provided by NGOs up to 2024, it shows how the increase in the mortality rate of migrants in the Western Mediterranean is the result of changes in the management of sea rescues, the militarization and externalization of the border, and the way in which migrants attempting to cross the sea are taking more dangerous routes than in the past.

Human-induced pressures such as climate and land-use changes in the Anthropocene disproportionately threaten island ecosystems and the endemic species they host. Shedding light on the ecological needs of island species is key to the conservation of these fragile ecosystems and their unique species. Here we present the ecological needs of a bat species endemic to Sardinia, the long-eared bat Plecotus sardus, and analyse the relationship between this Critically Endangered species and the insular environment at different spatial scales to inform action for its conservation. We show that besides displaying a unique phenology and roost use, the species is closely associated with the dry broadleaf forests of native oaks Quercus ilex and Quercus suber at all scales and, in contrast, is negatively affected by coniferous stands, open pastures and urban environments. Our results not only provide key information for the conservation of P. sardus but also provide insights into the unique adaptations of insular endemic species to the fragile island ecosystems, highlighting the importance of ecological studies to informing conservation in biodiversity hotspots. We also demonstrate that protection and restoration of key habitats, particularly within 2 km of roosts, are key to protecting the few known reproductive colonies.

The North Caesarea 1 shipwreck, briefly explored in the 1980s, is one of the few hulls of the Hellenistic and early Imperial periods excavated in the Eastern Mediterranean. This investigation relies on the meticulous re-examination of primary excavation data to help answer some questions regarding this hull that probably belonged to a large vessel.

The European shores of the Mediterranean are characterised by well-known sociocultural and economic dynamics during the Bronze and Early Iron Ages (2200–550 BC), but our understanding of the African shores is comparatively vague. Here, the authors present results from excavations at Kach Kouch, Morocco, revealing an occupation phase from 2200–2000 cal BC, followed by a stable settlement from c. 1300–600 BC characterised by wattle and daub architecture, a farming economy, distinctive cultural practices and extensive connections. Kach Kouch underscores the agency of local communities, challenging the notion of north-western Africa as terra nullius prior to Phoenician arrival.

This work focuses on the study of three pelagic fish species of the same genus, caught from the south-western coasts of the Mediterranean. It concerns lipid content, fatty acid profile and nutritional quality (atherogenic index, thrombogenicity index, ratio between hypocholesterolemic and hypercholesterolemic fatty acids and n6-to-n3 ratio) of Trachurus trachurus, Trachurus mediterraneus and Trachurus picturatus. Lipid extraction and esterification were carried out on the flesh of each species, and fatty acid methyl esters were analysed using gas chromatography-mass spectrometry. The obtained results show that lipid content mean values vary between 2.87 and 5.06%, saturated fatty acids contents range from 37.51 to 53.23%, monounsaturated fatty acids content range from 29.24 to 37.65% and polyunsaturated fatty acids content range from 9.11 to 33.24% according to species. Also, the different mean values of indexes describing the nutritional quality vary significantly depending on species. That confirms the good quality of studied species and their importance for human nutrition and health, hence the urgent need to preserve their stocks.