Publications

[Background] Rhinorhipidae Lawrence, 1988 is an enigmatic beetle family represented by a single species, Rhinorhipus tamborinensis Lawrence, 1988, from Australia, with poorly established affinities near the superfamily Elateroidea (click beetles, soldier beetles and fireflies) or the more inclusive series (infraorder) Elateriformia. Its evolutionary position may inform the basal relationships of the suborder Polyphaga, the largest clade of Coleoptera. [Results] We analyzed four densely sampled DNA datasets of major coleopteran lineages for mitogenomes, rRNA genes and single copy nuclear genes. Additionally, genome sequencing was used for incorporation of R. tamborinensis into a set of 4220 orthologs for 24 terminals representing 12 polyphagan superfamilies. Topologies differed to various degrees, but all consistently refute the proposed placement of Rhinorhipidae in Elateroidea and instead indicate either sister relationships with other Elateriformia, frequently together with Nosodendridae, another divergent small family hitherto placed in Derodontoidea, or in an isolated position among the deepest lineages of Polyphaga. The phylogenomic analyses recovered Rhinorhipus in a sister position to all other Elateriformia composed of five superfamilies. Therefore, we erect the new superfamily Rhinorhipoidea Lawrence, 1988, stat. Nov., with the type-family Rhinorhipidae. The origins of the Rhinorhipidae were dated to the Upper Triassic/Lower Jurassic at the very early phase of polyphagan diversification. [Conclusions] Thus, Rhinorhipidae adds another example to several recently recognized ancient relict lineages which are interspersed within contemporaneous hugely species-rich lineages of Coleoptera.

From Brazil to the United Kingdom, 2016 was a critical year in global politics. Heritage, ethics and the way that archaeologists relate to the public were and will all be affected, and it is time to reflect critically on the phenomenon of ‘reactionary populism’ and how it affects the practice and theory of archaeology. ‘Reactionary populism’ can be defined as a political form that is anti-liberal in terms of identity politics (e.g. multiculturalism, abortion rights, minority rights, religious freedom), but liberal in economic policies. It is characterised by nationalism, racism and anti-intellectualism, and as Judith Butler states in a recent interview, it wants “to restore an earlier state of society, driven by nostalgia or a perceived loss of privilege” (Soloveitchik 2016). Our intention here is to argue that the liberal, multi-vocal model of the social sciences and the humanities is no longer a viable option. Instead, we ask our colleagues to embrace an archaeology that is ready to intervene in wider public debates not limited to issues of heritage or of local relevance, is not afraid of defending its expert knowledge in the public arena, and is committed to reflective, critical teaching.

Morphometrics, the assignment of quantities to biological shapes, is a powerful tool to address taxonomic, evolutionary, functional and developmental questions. We propose a novel method for shape quantification of complex modular architecture in thalloid plants, whose extremely reduced morphologies, combined with the lack of a formal framework for thallus description, have long rendered taxonomic and evolutionary studies extremely challenging. Using graph theory, thalli are described as hierarchical series of nodes and edges, allowing for accurate, homologous and repeatable measurements of widths, lengths and angles. The computer program MorphoSnake was developed to extract the skeleton and contours of a thallus and automatically acquire, at each level of organization, width, length, angle and sinuosity measurements. Through the quantification of leaf architecture in Hymenophyllum ferns (Polypodiopsida) and a fully worked example of integrative taxonomy in the taxonomically challenging thalloid liverwort genus Riccardia, we show that MorphoSnake is applicable to all ramified plants. This new possibility of acquiring large numbers of quantitative traits in plants with complex modular architectures opens new perspectives of applications, from the development of rapid species identification tools to evolutionary analyses of adaptive plasticity.

The red seaweed Laurencia viridis is a rich source of oxygenated secondary metabolites that were derived from squalene. We report here the structures of three novel compounds, (+)-longilene peroxide (1), longilene (2), and (+)-prelongilene (3) that were isolated from this alga, in addition to other substances, 4 and 5, resulting from their acid-mediated degradation. The effect of compounds 1 and 3 against Ser-Thr protein phosphatase type 2A (PP2A) was evaluated, showing that (+)-longilene peroxide (1) inhibited PP2A (IC 11.3 µM). In order to explain the interaction between PP2A and compounds 1 and 3, molecular docking simulations onto the PP2A enzyme-binding region were used.

Two new brominated bis(indole) alkaloids, dragmacidins I (1) and J (2), showing low micromolar cytostatic activity, along with three known congeners were isolated from the Tanzanian sponge Dragmacidon sp. and their structures determined by the analysis of their NMR and MS data. From the study of their mechanism of action, it can be concluded that the mitotic arrest at metaphase in treated tumor cells, mediated by inhibition of PP1 and/or PP2A phosphatases is involved in the observed antiproliferative activity. Differences in their bioactivities were rationalized, and a plausible binding mode is proposed on the basis of computational simulations.

The common octopus (Octopus vulgaris, Cuvier 1797) is a promising species for aquaculture diversification, but the massive mortality during the first life stage is the main bottleneck for its commercial production. The aim of the present study was to compare the effects of different live preys (Artemia and crustacean zoeae) and/or Artemia enrichment protocols in the paralarval growth by using a meta-analysis approach. A total of 26 independent assays were used, including data from the bibliography and from experiments carried out by our group. Three comparisons were established: (i) crustacean zoeae vs. Artemia, (ii) different crustacean zoeae species and (iii) Artemia enriched with marine lecithin (rich in polar lipids-PL and docosahexaenoic acid-DHA) vs. previously used Artemia enrichments. The meta-analysis approach allowed a quantitative review of independent studies with reliable conclusions, avoiding the subjectivity inherent to classical reviews. The outputs provided statistical confirmation of the better suitability of crustacean zoeae with respect to Artemia. However, not all crustacean species showed the same results, given that the high variability on Grapsus zoeae hampered finding significant differences with respect to the control treatment (Artemia). Nutrient composition and biometry of the different types of prey are discussed as possible causes of the differences arising from the meta-analysis. Finally, the present results suggest that marine lecithin has a beneficial effect on paralarval growth with respect to previously used enrichments, which could be related to the increase in DHA and PL in Artemia, given the essential role of these lipid components in octopus paralarval physiology.

This paper is the first report of a large research project for the preventive conservation and tourism management of the Altamira World Heritage site that was conducted from 2012 to 2014 and focused on a key feature of the project estimating the potential economic impacts of reopening the Altamira cave to the public. The study analyzed the direct and indirect economic impacts of visitors to Altamira on the regional economy of Cantabria, a Spanish Autonomous Community. Using an input-output method (IO), we estimated the values accrued to the region. This study provides the scientific foundation for the development of an effective tourism management program for the Altamira Complex, analyzing the impact of its access regime and offering policy recommendations on the broader regional economic impact of Altamira.

Nine new cembranoids 1–9 containing an α–methylene–γ–butyrolactone together with the known diterpenes 10–15 have been isolated from a crude extract of Eunicea sp. and their structures were established by spectroscopic methods. The proliferative effect of six of these compounds on insulin-producing cells (beta–cells) was evaluated.

This opinion article addresses the implications of recent EU regulations on alcoholic drinks labeling for regional development. In March 2017, the European Commission released a report requiring the mandatory labeling of ingredients and nutritional information for alcoholic beverages within 1 year, putting an end to the exceptionality of this sector compared to other foodstuffs, and responding to pressing demands by European consumer associations and other actors. Pressure from the alcohol sector had delayed EU legislation on the matter and managed to avoid a mandatory labeling provision, instead generating the possibility of making its own regulation proposal within a year. The Commission will assess this proposal in March 2018 and could review or reject it if found to be unsatisfactory. Here, we want to examine the controversy elicited by this new regulation, analyzing the consequences of labeling (or not) in the particular case of wine regions. It shows how the lack of labeling regulations harms winemakers oriented towards the production of quality wines and generates important information asymmetries that can lead to an overall decrease of wine quality. Ultimately, it highlights the relevance of a regional perspective on EU sectoral policies, as these can have unintended effects and lead to contradictory outcomes. The example of wine regions is used to emphasize this issue by showing the need to harmonize regional cohesion and CAP policies with industrial, environmental and consumer protection policies.

Red algae of Laurencia continue to provide wide structural diversity and complexity of halogenated C acetogenin medium-ring ethers. Here, we described the isolation of three new C acetogenins (3–5), and one truncated derivative (6) from Laurencia viridis collected on the Canary Islands. These compounds are interesting variations on the pinnatifidenyne structure that included the first examples of ethynyl oxirane derivatives (3–4). The structures were elucidated by extensive study of NMR (Nuclear Magnetic Resonance) data, J-based configuration analysis and DFT (Density Functional Theory) calculations. Their antiproliferative activity against six human solid tumor cell lines was evaluated.