Towards a taxonomically unbiased European Union biodiversity strategy for 2030

Through the Habitats Directive (92/43/EEC) and the financial investments of the LIFE projects, Europe has become an experimental arena for biological conservation. With an estimated annual budget of euro20 billion, the EU Biodiversity Strategy for 2030 has set an ambitious goal of classifying 30% of its land and sea territory as Protected Areas and ensuring no deterioration in conservation trends and the status of protected species. We analysed LIFE projects focused on animals from 1992 to 2018 and found that investment in vertebrates was six times higher than that for invertebrates (euro970 versus euro150 million), with birds and mammals alone accounting for 72% of species and 75% of the total budget. In relative terms, investment per species towards vertebrates has been 468 times higher than that for invertebrates. Using a trait-based approach, we show that conservation effort is primarily explained by species' popularity rather than extinction risk or body size. Therefore, we propose a roadmap to achieve unbiased conservation targets for 2030 and beyond.Peer reviewe

French scientific names of continental molluscs of France: process for establishing a list of reference

In the biodiversity crisis context and with the increasing general awareness on this issue, conservation of small and poorly-known species is hampered by the fact they only have latine names. In order to communicate for biodiversity conservation, having French names is an advantage which is lacking in terrestrial and freshwater molluscs from France. To remedy this problem, we propose a list of French scientific names for this group, i.e. all species and subspecies known from France. We have listed existing names in legal documents, in usage and in the 18th and 19th centuries scientific literature. The resulting list being incomplete, we had to create new French names, following a series of recommendations adapted from similar works dealing with other taxonomic groups. We conclude by dealing with the issue of the legitimacy and validity of such names. The list of French scientific names is given as an appendix and is downloadable from internetDans le contexte de la crise de la biodiversité et de la prise de conscience par le grand public des enjeux environnementaux, la conservation des espèces petites et méconnues est handicapée par le fait que ces espèces ne peuvent être désignées que par leur nom latin. Dans une optique de communication pour la préservation de la biodiversité, disposer de nom français est un atout qui fait défaut pour les mollusques terrestres et d'eau douce de France. Pour remédier à cela, nous proposons une liste de noms scientifiques français pour ce groupe, et présentons les étapes qui ont permis l'établissement de cette liste. Les taxons concernés sont l'ensemble des espèces et sous-espèces de la faune de France, pour lesquelles nous avons recensé les noms existants, dans les textes légaux, dans l'usage et dans la littérature scientifique des XVIIIe et XIXe siècles. La liste de noms obtenue étant insuffisante, nous avons dû créer de nouveaux noms, en suivant une série de recommandations adaptées de travaux similaires menés sur d'autres groupes. Enfin, nous concluons par la question de la validité et de la légitimité d'une telle liste. La liste des noms scientifiques français est fournie en annexe et téléchargeable sur internet

The conservation status of the world's freshwater molluscs

With the biodiversity crisis continuing unchecked, we need to establish levels and drivers of extinction risk, and reassessments over time, to effectively allocate conservation resources and track progress towards global conservation targets. Given that threat appears particularly high in freshwaters, we assessed the extinction risk of 1428 randomly selected freshwater molluscs using the IUCN Red List Categories and Criteria, as part of the Sampled Red List Index project. We show that close to one-third of species in our sample are estimated to be threatened with extinction, with highest levels of threat in the Nearctic, Palearctic and Australasia and among gastropods. Threat levels were higher in lotic than lentic systems. Pollution (chemical and physical) and the modification of natural systems (e.g. through damming and water abstraction) were the most frequently reported threats to freshwater molluscs, with some regional variation. Given that we found little spatial congruence between species richness patterns of freshwater molluscs and other freshwater taxa, apart from crayfish, new additional conservation priority areas emerged from our study. We discuss the implications of our findings for freshwater mollusc conservation, the adequacy of a sampled approach and important next steps to estimate trends in freshwater mollusc extinction risk over time

Additional molecular data on the protected springsnail species Bythinella viridis (Poiret, 1801) ( Gastropoda: Bythinellidae ) suggest synonymy of related taxa

International audienceThe taxonomic status of the springsnails B. viridis , B. carinulata and B. lancelevei remains unclear despite the molecular evidence data provided by Benke et al. (2009). Based on extensive sampling and the analysis of COI, 16S, 28S and ITS genes, we investigate analyze the genetic variability of Bythinella populations sampled within the area of occurrence of the three nominal taxa. Topotypic populations of B. lancelevei and B. viridis cannot could not be distinguished. Some of the populations included in the putative area of distribution range of B. carinulata form distinct supported clades, but these distinct clades are not monophyletic and the overall genetic divergence is less than the 3% barcoding gap for species of the genus the barcoding gap of c.a. 3% for Bythinella species. Therefore, we propose to synonymize these three nominal species under the name B. viridis (Poiret, 1801). Our results have important conservation implications, as they significantly expand the range of the protected species B. viridis . This species should be considered in impact studies in a large northeastern quarter of France.Le statut taxonomique des Bythinelles B. viridis , B. carinulata et B. lancelevei reste mal défini en dépit des données moléculaires fournies par Benke et al. (2009). Sur la base d'un échantillonnage extensif et de l'analyse des gènes COI, 16S, 28S et ITS, nous analysons la variabilité génétique des populations de Bythinelles échantillonnées au sein de la zone d'occurrence des trois taxons nominaux. Les populations topotypiques de B. lancelevei et B. viridis n'ont pas pu être distinguées. Certaines des populations incluses dans l'aire de répartition supposée de B. carinulata forment des clades distincts et soutenus, mais ces clades ne sont pas monophylétiques et la divergence génétique globale est inférieure au barcoding gap de 3% pour les espèces du genre Bythinella . Par conséquent, nous proposons de synonymiser ces taxons sous le nom B. viridis (Poiret, 1801). Nos résultats ont des implications importantes en termes de conservation, puisqu'ils élargissent considérablement l'aire de distribution de l'espèce protégée B. viridis . Cette espèce devrait être prise en compte dans les études d'impact dans un grand quart nord-est de la France

Homo erectus at Trinil on Java used shells for tool production and engraving

The manufacture of geometric engravings is generally interpreted as indicative of modern cognition and behaviour. Key questions in the debate on the origin of such behaviour are whether this innovation is restricted to Homo sapiens, and whether it has a uniquely African origin. Here we report on a fossil freshwater shell assemblage from the Hauptknochenschicht ('main bone layer') of Trinil (Java, Indonesia), the type locality of Homo erectus discovered by Eugène Dubois in 1891 (refs 2 and 3). In the Dubois collection (in the Naturalis museum, Leiden, The Netherlands) we found evidence for freshwater shellfish consumption by hominins, one unambiguous shell tool, and a shell with a geometric engraving. We dated sediment contained in the shells with (40)Ar/(39)Ar and luminescence dating methods, obtaining a maximum age of 0.54 ± 0.10 million years and a minimum age of 0.43 ± 0.05 million years. This implies that the Trinil Hauptknochenschicht is younger than previously estimated. Together, our data indicate that the engraving was made by Homo erectus, and that it is considerably older than the oldest geometric engravings described so far. Although it is at present not possible to assess the function or meaning of the engraved shell, this discovery suggests that engraving abstract patterns was in the realm of Asian Homo erectus cognition and neuromotor control

Bardet-Biedl syndrome highlights the major role of the primary cilium in efficient water reabsorption

Studies of the primary cilium, now known to be present in all cells, have undergone a revolution, in part, because mutation of many of its proteins causes a large number of diseases, including cystic kidney disease. Bardet–Biedl syndrome (BBS) is an inherited ciliopathy characterized, among other dysfunctions, by renal defects for which the precise role of the cilia in kidney function remains unclear. We studied a cohort of patients with BBS where we found that these patients had a urinary concentration defect even when kidney function was near normal and in the absence of major cyst formation. Subsequent in vitro analysis showed that renal cells in which a BBS gene was knocked down were unciliated, but did not exhibit cell cycle defects. As the vasopressin receptor 2 is located in the primary cilium, we studied BBS-derived unciliated renal epithelial cells and found that they were unable to respond to luminal arginine vasopressin treatment and activate their luminal aquaporin 2. The ability to reabsorb water was restored by treating these unciliated renal epithelial cells with forskolin, a receptor-independent adenylate cyclase activator, showing that the intracellular machinery for water absorption was present but not activated. These findings suggest that the luminal receptor located on the primary cilium may be important for efficient transepithelial water absorption