Gabriel Nève

• Professor (Assistant) at Aix-Marseille University

Background Maurice Dauzet collected hoverflies mainly in Loire and Haute-Loire from 1980 to 2017. Here, we provide the data from his hoverfly collection and card records, in order to support efforts towards a better understanding of the changing distribution of pollinators. New information The hoverflies from the Dauzet collection includes 1302 sp...

Background The spectacular decline in pollinators and their prominent role in pollination of natural and cultivated plants has stimulated research on pollinating insects. Over the last ten years, much ecological research has been carried out on bees, often generating a large volume of specimens and increasing the importance of entomological collect...

The spectacular decline in pollinators and their prominent role in pollination of natural and cultivated plants has stimulated research on pollinating insects. Over the last ten years, many ecological researches have been carried out on bees, often generating a large volume of specimen capture and increasing the importance of entomological collecti...

Hoverflies are among the most important insect pollinators and there is documented evidence of a recent decline in their populations. To trace the past distributions of hoverfly species, verified records of historical collections are essential. Here, we provide data on 1071 specimens of hoverflies collected or received by Jean Timon-David and hoste...

Hoverflies are among the most important insect pollinators and there is documented evidence of a recent decline in their populations. To trace the past distributions of hoverfly species, verified records of historical collections are essential. Here we provide data on 1071 specimens of hoverflies collected or received by Jean Timon-David and hosted...

A specimen of Microrhagus pyrenaeus Bonvouloir, 1872 (Coleoptera, Eucnemidae) was trapped in Fos–sur–Mer in 2012. It appeared in a recent publication under the name Eucnemis capucina Ahrens, 1812. M. pyrenaeus is new to the Bouches–du–Rhône departement and also to the Provence–Alpes–Côte–d’Azur region. This species, which has a high national heri...

Taxonomic researches on Pelecocera from France, with a discussion of their distribution and ecology (Diptera, Syrphidae). The discovery of a new species of the genus Pelecocera led us to revise all the French material of this genus. This revision has been the subject of many twists and turns. We detail them here chronologically, from the discovery...

Many insect species have shown dramatic declines over the last decades, as a result of man-related environmental changes. Many species which were formerly widespread are now rare. To document this trend with evidence, old records of collected specimens are vital. We provide here the data on 9752 bee (Hymenoptera: Apoidea) specimens hosted in severa...

A targeted dung-beetle (Scarabaeoidea: Aphodiidae, Scarabaeidae & Geotrupidae) survey in the "mas de Gonon" sector (Fos-sur-Mer, Bouches-du-Rhône) was conducted in 2019. The present study raised the previous known species richness of this area from 6 to 31 dung beetles. The results shows a remarkable richness and includes species that are localized...

Many insect species have shown dramatic declines over the last decades, as a result of man-related environmental changes. Many species which were formerly widespread are now rare. To document this trend with evidence, old records of collected specimens are vital. We provide here the data on 9752 bee (Hymenoptera: Apoidea) specimens hosted in severa...

Nous présentons ici des données sur 55 espèces de Syrphidae trouvés dans le département des Alpes-de-Haute-Provence. Neuf espèces sont signalées pour la première fois dans ce département. Un spécimen de Eristalinus aeneus (Scopoli) avec des taches oranges sur le tergite 2 est présenté. La présence des saproxylophages rares Sphiximorpha garibaldii R...

Des recherches menées en 2018-2019 sur le site de la Feuillane à Fos-sur-Mer (Bouches-du-Rhône, France) ont permis de compléter des travaux entomologiques déjà menés sur ce site. Les insectes apparte-nant aux groupes suivants ont été systématiquement identifiés : coléop-tères ; lépidoptères rhopalocères et Zygaenidae ; diptères Conopidae, Hippobosc...

Nectar is a key resource for numerous insects. Despite its importance, nectar productivity has mainly been assessed using one sampling method, in which the volume of nectar produced by a flower is measured after 24 h of isolation from insects (‘measured 24 h volume’ hereafter). This method assumes that nectar removal by flower‐visiting insects does...

This European Red List of Hoverflies is an output of the Hoverfly Specialist Group of the IUCN Species Survival Commission, funded by the European Commission Service Contract ‘Status assessment of European Hoverflies (Syrphidae) – European Red List of Hoverflies (EU and pan-Europe)’ (No. 07.0202/2018/792937/SER/ENV.D.2).

The known beetle fauna of Príncipe, São Tomé, and Annobón amounts to 403 species and subspecies, of which 190 (47%) are endemic. The most diverse families of beetles are the Cerambycidae (61 species), the Tenebrionidae (57 species), the Carabidae (45 species), the Scarabaeidae (34 species), and the Coccinellidae (31 species). Most records come from...

Pollinators are declining globally, with climate change implicated as an important driver. Climate change can induce phenological shifts and reduce floral resources for pollinators, but little is known about its effects on floral attractiveness and how this might cascade to affect pollinators, pollination functions and plant fitness. We used an in...

The occurrence and distribution of the various species of the genus Pelecocera Meigen, 1822 (Diptera: Syrphidae) occurring in France are revised and a new species, Pelecocera garrigae Lair & Nève, 2022 sp. nov., is described from Mediterranean France. Distribution and ecological data of the six French species of Pelecocera are provided and an ident...

In the context of global pollinator decline, little is known about the protection status and ecology of many species. This lack of knowledge is particularly important for Mediterranean protected areas that harbour diverse pollinator communities and are subject to considerable anthropogenic pressures. Calanques National Park (85 km2), which is locat...

1. Temperature acts as a major factor on the timing of activity and behaviour in butterflies, and it might represent a key driver of butterfly diversification along elevation gradients. Under this hypothesis, local adaptation should be found along the elevation gradient, with butterflies from high elevation populations able to remain active at lowe...

Nous préparons actuellement une nouvelle liste des Odonates de l'archipel de Sao Tomé et Principe avec deux nouvelles espèces pour les îles. A bientôt. Gérard Filippi

https://presses-universitaires.univ-amu.fr/

A revision of French Pelecocera data is presented, including both Pelecocera and Chamaesyrphus subgenera. Distribution and ecological data of all species are summarised. A new species from Mediterranean limestone scrubland is described. An identification key is given for these species.

Pleistocene glaciations had significant effects on the distribution and evolution of species inhabiting the Holarctic region. Phylogeographic studies concerning the entire region are still rare. Here, we compared global phylogeographic patterns of one boreo-montane and one boreo-temperate butterflies with largely overlapping distribution ranges acr...

Overview of samples of both Boloria eunomia and Boloria selene. Specimens localities; coordinates; COI, ArgKin and Wingless haplotypes, SAMOVA groups and GenBank accession numbers. (XLSX)

MaxEnt. Comparisons of (A) Regularization Multiplier (RM) parameter and (B) different feature classes (FC) of MaxEnt models by ENMeval R package using AICc, used for calculations of Spatial Distribution Models of Boloria eunomia and Boloria selene. The lowest AICc values indicate the best models. (C) Relative gain of the MaxEnt model after removing...

Graphs from SAMOVA analyses. Boloria eunomia cytochrome c oxidase subunit I (COI; 11 populations) (A); and arginine kinase gene (ArgKin; 3 populations) (B); Boloria selene cytochrome c oxidase subunit I (COI; 6 populations) (C). K, number of clusters; ΦCT, fixation index. (TIF)

Detailed maps of haplotype diversity of Boloria eunomia within Europe based on COI. Two lineages occurring in the Alps and the Czech Republic (A). Haplotype diversity in north-eastern Europe showing the contact zones in Scandinavia and Poland (B). (TIF)

Thermal requirements for flight in butterflies is determined by a combination of external factors, behaviour and physical constraints. Thorax temperature of 152 butterflies was monitored with an infra-red thermometer in controlled laboratory conditions. The temperature at take-off varied from 13.4 °C, for a female Heteronympha merope to 46.3°C, for...

Ice ages within Europe forced many species to retreat to refugia, of which three major biogeographic basic types can be distinguished: "Mediterranean", "Continental" and "Alpine / Arctic" species. However, this classification often fails to explain the complex phylogeography of European species with a wide range of latitudinal and altitudinal distr...

Chaetognatha are a phylum of marine carnivorous animals which includes more than 130 extant species. The internal systematics of this group have been intensively debated since it was discovered in the 18(th) century. While they can be traced back to the earlier Cambrian, they are an extraordinarily homogeneous phylum at the morphological level - a...

Green spaces within cities counteract the loss of bird diversity due to urbanization because they provide food, nesting sites, and protection against predators. Nevertheless, the influence of vegetation,area, and impervious surfaces on the distribution of wild species is not well understood and can vary between seasons and even from city to city in...

Microsatellites are ubiquitous in Eukaryotic genomes. A more complete understanding of their origin and spread can be gained from a comparison of their distribution within a phylogenetic context. Although information for model species is accumulating rapidly, it is insufficient due to a lack of species depth, thus intragroup variation is necessaril...

Proportion of the six most frequent tetranucleotide motifs within the total tetranucleotide microsatellite coverage. Species follow the same order as in Dataset S1 and in Figures 1 and 2. (TIF)

Proportion of the six most frequent pentanucleotide motifs within the total pentanucleotide microsatellite coverage. Species follow the same order as in Dataset S1 and in Figures 1 and 2. (TIF)

Species list and the number of bases in microsatellites or homopolymers for each investigated species. Columns included are: Species names, taxonomic groups, contact person, total length of the 454 sequences, GC proportions of 454 dataset, and the number of base pairs of microsatellites for each repeat unit length and for each motif. (CSV)

Proportion of microsatellites of each repeat unit length. Coverage of microsatellites of each repeat unit length and homopolymers is divided by the total microsatellite and homopolymer coverage; species follow the same order as in Dataset S1 and in Figures 1 and 2. (TIF)

Correlation between GC% of sequences and A/T rich microsatellite proportions. (TIF)

Proportion of the six most frequent hexanucleotide motifs within the total hexanucleotide microsatellite coverage. Species follow the same order as in Dataset S1 and in Figures 1 and 2. (TIF)

Research in evolutionary developmental (evo-devo) biology is making an increasingly important contribution to our understanding of the molecular mechanisms underlying the establishment of complex morphological traits. Deciphering the ontogenetic trajectories leading to the differentiation of sister species (and the existence of hybrids) is a new ch...

Currently it remains difficult to obtain robust microsatellite markers for Lepidoptera. In an attempt to overcome the problems associated with developing microsatellite markers for this insect order we combined (i) biotin-enrichment protocol, (ii) next generation pyrosequencing (through 454 GS-FLX Titanium technology) and (iii) the use of individua...

Temporal changes in allele frequencies are often assumed in studies addressing the history of populations affected by different anthropogenic and natural impacts at different time scales. Yet, few studies directly compare the genetic composition of populations over time spans of more than 10 years. Therefore, to test the genetic effects of 15 years...

Secondary clines level down in the course of time if the gene flow is not interrupted. Temporally repeated sampling of populations in a cline allows the investigation not only of its occurrence but also of the estimation of the amount of ongoing gene flow. We reinvestigated an allozyme gradient in Carabus auronitens populations in the Westphalian L...

The climate warming of the postglacial has strongly reduced the distribution of cold-adapted species over most of Central Europe. Such taxa have therefore become extinct over most of the lowlands and shifted to higher altitudes where they have survived to the present day. The lycaenid butterfly Lycaena helle follows this pattern of former widesprea...

Secondary clines level down in the course of time if the gene flow is not interrupted. Temporally repeated sampling of populations in a cline allows the investigation not only of its occurrence but also of the estimation of the amount of ongoing gene flow. We reinvestigated an allozyme gradient in Carabus auronitens populations in the Westphalian L...

During the post-glacial warming, cold-adapted species shifted their distribution to higher latitudes and altitudes and became widely extinct over the European lowlands. The butterfly Lycaena helle shows this feature, and is currently distributed in highly isolated habitat remnants restricted to higher elevations over Central Europe. We analysed fiv...

1. Since the Last Glacial Maximum, the distribution of terrestrial plant and animal taxa in Europe has shifted from their refugia, Northwards in latitude and upwards in altitude. 2. The populations from refugia, mainly the mountain massifs of S Europe (Pyrenees and Alps, and also the Carpathian and Balkan Mountains), harbor a higher genetic diversi...

Thorax temperatures necessary for flight behaviour was measured in 347 butterflies belonging to 40 species captured at two sites in Mediterranean France. There is a wide variation among species; the recorded minimum was 20.9°C in some Pieris rapae specimens, and the maximal was 39.9°C in an Iphiclides podalirius specimen. Median values ranged from...

The butterfly Proclossiana eunomia (Lepidoptera: Nymphalidae) was discovered at a single locality in the Czech Republic in 1963. Until the 1980s, it was known from a restricted area, from which it spontaneously expanded during the 1980s to other localities up to 23 km from the source population. Samples were collected in 2002 from the source and te...

Populations of butterflies generally show a relationship between genetic variation and geographical distance, but this relationship is not uniform because of migration, selection, drift and mutation. For many species, recent outright habitat loss has led to increasing isolation of extant population units and reductions of population sizes. Not only...

List of sampled localities, with allele frequencies and sample size. For each locality, the coordinates are given in latitude and longitude (Greenwich coordinates) and xy coordinates in m within each region.

The structure of local populations of a monophagous butterfly, the bog fritillary Proclossiana eunomia , was studied in a complex of suitable habitat patches separated by spruce plantations or fertilized pasture. An unexpected high level of adult movements between habitat patches was detected by a mark—release—recapture technique. Local populations...

The main components of the spatial genetic structure of the populations are neighbourhood size and isolation by distance. These may be inferred from the allele frequencies across a series of populations within a region. Here, the spatial population structure of Proclossiana eunomia was investigated in two mountainous areas of southern Europe (Astur...

Natural selection acting on timing of metamorphosis can be sex-specific, resulting in differences in timing between males and females. Insects with discrete generations frequently show protandry: males usually mature before females. Both Euphydryas editha and E. aurinia butterflies followed this trend. The present study was motivated by the unusual...

The shape of the resting eggs of a large branchiopod crustacean, the Anostraca Tanymastix stagnalis, is represented very accurately by analytical expressions. The occurrence of atypical shape of some T. stagnalis eggs may be viewed as a simple change of the analytical expression describing the usual egg shape. Their unusual shape may be explained b...

Recently refined evolutionary theories have highlighted that ecological interactions and environmental gradients can play a major role in speciation. This paper reports on a 3-year field study, in which the ecology of two congeneric butterfly species was used to explore and compare the environmental factors determining their spatial distribution. T...

For many rare or protected species, it is unwise to collect the large series of specimens necessary for morphological studies. We present here a method for securing live specimens in the field to store images in a standard way. A portable stand and a digital camera allow the storage of standardised pictures at reasonable price, Individual insects a...

Populations of Plebejus argus were sampled in southwest Finland, both on the mainland and on islands, and in and around the Doñana National Park in southwest Spain. A total of 453 individuals coming from 14 locations were investigated using allozyme electrophoresis on a total of 10 polymorphic allozyme loci. Contrary to earlier studies, all conduct...

We present here a comparative and synthetic study of the genetic structure of the populations of three French butterfly species, Proclossiana eunomia, Parnassius apollo and Euphydryas aurinia. Using allozyme electrophoresis, it is possible to estimate the level of genetic variation within and between populations of these species in various regions...

We present here a comparative and synthetic study of the genetic structure of the populations of three French butterfly species, Proclossiana eunomia, Parnassius apollo and Euphydryas aurinia. Using allozyme electrophoresis, it is possible to estimate the level of genetic variation within and between populations of these species in various regions...

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Populations of Proclossiana eunomia (Lepidoptera, Nymphalidae) occur in middle Europe in patchy habitats of hay meadows along valleys or peat bogs. Samples of P. eunomia populations from the Ardennes region (northern France and southern Belgium) were analysed by allozyme electrophoresis. Patches isolated by more than 2 km of mature forests proved g...

The genetic diversity and the temporal and spatial genetic population structure of the butterfly Aglais urticae, a highly mobile species, were studied by allozyme electrophoresis. High levels of allozyme diversity were found. Most of the total genetic diversity occurred at the within-population scale rather than at the between-population scale. Thi...

The population structure of the clouded Apollo butterfly Parnassius mnemosyne was investigated by mark–release–recapture studies and by allozyme polymorphism in north-east Hungary. Large differences were observed in the estimated sizes of different populations. The results of the genetic analysis suggest that even large populations may have small e...

Between the 19th and 21st of February, a working meeting of the EU IV TMR Framework project "Survival and Evolution of Species in Fragmented Landscapes", led by Ilkka Hanski and integrated by research groups from Finland, United Kingdom, Netherlands, Germany, France, and Spain, took place in Córdoba. During the congress 33 oral communications showc...

Current metapopulation models assume that migration rate remains constant from one generation to the other, leading to a constant population foundation rate. In the butterfly Proclossiana eunomia, the mating behaviour is a main factor affecting individual migration. In a field study, male harrassments induced female emigration at high male density....

Spatial structure of Calluna vulgaris populations was investigated at various scales using autocorrelation statistical techniques. Intrapopulation structure has been studied by recording the genotypes at four polymorphic loci of 41 individual plants of Calluna vulgaris within a grid of 16 X 60m , from the site of Sacrawé? (High Ardenne, Belgium). T...

1. Mark-release-recapture (MRR) surveys of Proclossiana eunomia conducted in 1992 and 1993 in the Belgian Ardennes, and in 1993 in the Pyrenees revealed that 8-16% of recaptures occurred after a movement of more than 200 m on unfavourable habitat. 2. The spread of P. eunomia following its introduction in Morvan (central France) 20 years ago shows a...

The hypothesis of sexual conflict postulates that the differential male- female spatial distribution in butterfly species in which males are not territorial or do not defend a resource is due to the effect of ardent males on female behaviour. In such species females are often an ephemeral resource as they usually mate once while males are capable o...

Metapopulation theory is a powerful tool to predict the future of populations within a fragmented landscape. By coupling demographic and genetic studies on such a set of populations of the butterfly Proclossiana eunomia, we show that adult dispersal was oriented along river basins. The comparison of allelic frequencies of populations from different...

Carabid beetles were trapped in summer 1987 and spring 1988 in the Plateau des Tailles (Province Luxembourg, Belgium). The traps were checked every morning during 10 trapping sessions (79 days). Temperature and humidity were recorded continuously on the site during the whole period. The influence of these two meteorological variables was studied us...

The extent to which Kittiwakes Rissa tridactyla return to their colony of birth to breed (philopatry) and the distance moved by emigrating individuals has been investigated using a method of direct observation and ringing recoveries. It is estimated that 36% of the young are philopatric, and these are mainly males. A further 43% breed in another co...