A5042735336- Fossil Insects in Amber
- Plant and animal studies
- Lepidoptera: Biology and Taxonomy
- Hymenoptera taxonomy and phylogeny
- Plant Diversity and Evolution
- Insect Resistance and Genetics
- Collembola Taxonomy and Ecology Studies
- Bacillus and Francisella bacterial research
- Paleontology and Stratigraphy of Fossils
- Insect and Pesticide Research
- Hemiptera Insect Studies
- Entomopathogenic Microorganisms in Pest Control
- Coleoptera Taxonomy and Distribution
- Insects and Parasite Interactions
- Geological formations and processes
- Evolution and Paleontology Studies
- Insect-Plant Interactions and Control
- Fern and Epiphyte Biology
- Ethnobotanical and Medicinal Plants Studies
- Botany, Ecology, and Taxonomy Studies
- Geology and Paleoclimatology Research
- Botany and Geology in Latin America and Caribbean
- Bacterial biofilms and quorum sensing
- Scarabaeidae Beetle Taxonomy and Biogeography
- Insect and Arachnid Ecology and Behavior
Centre National de la Recherche Scientifique
2007-2024
Institut de Systématique, Évolution, Biodiversité
2014-2024
École Pratique des Hautes Études
2014-2024
Sorbonne Université
2014-2024
AgroParisTech
2010-2022
Muséum national d'Histoire naturelle
2007-2014
Université Claude Bernard Lyon 1
2010-2012
Nanjing Institute of Geology and Paleontology
2008
Chinese Academy of Sciences
2008
Institut National de la Recherche Agronomique
2002-2004
Abstract Two different patterns of wing venation are currently supposed to be present in each the three orders Paraneoptera. This is unlikely compared with situation other insects where only one pattern exists per order. We propose for all Paraneoptera a new and unique interpretation pattern, assuming that convex cubitus anterior gets fused common stem median radial veins at or very near base, after separation from concave posterior, re‐emerges more distally R + M stem. Thereafter, vein...
Within modern gymnosperms, conifers and Ginkgo are exclusively wind pollinated whereas many gnetaleans cycads insect pollinated. For cycads, thrips specialized pollinators. We report such a pollination mode from Early Cretaceous amber of Spain, wherein four female representing genus two species in the family Melanthripidae were covered by abundant Cycadopites pollen grains. These females bear unique ring setae interpreted as structures for grain collection, functionally equivalent to...
Amber is of great paleontological importance because it preserves a diverse array organisms and associated remains from different habitats in close to the amber-producing forests. Therefore, discovery amber inclusions important not only for tracing evolutionary history lineages with otherwise poor fossil records, but also elucidating composition, diversity, ecology terrestrial paleoecosystems. Here, we report unique find African inclusions, Cretaceous Ethiopia. Ancient arthropods belonging...
Abstract With nearly 100,000 species, the Acercaria (lice, plant lices, thrips, bugs) including number of economically important species is one most successful insect lineages. However, its phylogeny and evolution mouthparts among other issues remain debatable. Here new methods preparation permitted comprehensive anatomical description inclusions from mid-Cretaceous Burmese amber in astonishing detail. These “missing links” fossils, attributed to a order Permopsocida, provide crucial...
ABSTRACT The entomopathogenic bacterium Bacillus thuringiensis is known to secrete a zinc metalloprotease (InhA) that specifically cleaves antibacterial peptides produced by insect hosts. We identified second copy of the inhA gene, named inhA2 , in B. strain 407 Cry − . gene encodes putative polypeptide showing 66.2% overall identity with InhA protein and harboring zinc-binding domain (HEXXH), which characteristic zinc-requiring metalloproteases. used transcriptional ′- lacZ fusion show...
Abstract The majority of the analyses evolutionary history megadiverse class Insecta are based on documented taxonomic palaeobiodiversity. A different approach, poorly investigated, is to focus morphological disparity, linked changes in organisms’ functioning. Here we establish a hierarchy great geological epochs new method using Wagner parsimony and ‘presence/absence type mouthpart Hexapoda’ dataset. We showed absence major rupture evolution mouthparts, but six during which numerous...
Abstract Insects dominate Earth by their diversity, and the most are Holometabola. Therefore, holometabolous development characterised a pupal stage between larvae adult seems to be linked with extensive radiation of insects. Holometaboly is suspected appear in carboniferous period, however until now fossils have not brought univocal evidence. The discovery Carboniferous (Early Langsettian, circa 310 mya, Bashkirian Stage) France earliest Holometabola attributed Permian amphiesmenopteran or...
Abstract When the same complex trait is exhibited by closely related species, a single evolutionary origin frequently invoked. The stridulatory apparatus present in forewings of extant crickets, mole katydids, and prophalangopsids, currently interpreted as sharing common due to their similarity unique function. An alternative hypothesis convergent evolution these ensiferan groups has challenged this view, but remained controversial because competing interpretations wing venation. Here we...
ABSTRACT We previously reported that Bacillus thuringiensis strain 407 Cry 32 − secretes a zinc-requiring metalloprotease, InhA2, is essential for virulence in orally infected insects. Analysis of the inhA2 - lacZ transcriptional fusion showed expression repressed PlcR background. Using DNase I footprinting experiments, we demonstrated activates transcription directly by binding to DNA sequence showing one-residue mismatch with box. It was B. oral infection contributing synergistic...
Abstract Recent Thysanoptera are characterized by two pairs of slender wings fringed long hairs and with reduced venation. Fossils presenting more complete venation have been used in earlier studies to link 'Zoropsocinae', which form 'Lophioneurinae' the 'Lophioneuridae', an extinct family superorder Thripida. On basis one new Carboniferous fossil described herein, Westphalothripides oudardi sp. nov. (Westphalothripidesidae fam. nov.), as well Cretaceous fossils, we revise current...
ABSTRACT ClpP and ClpC are subunits of the Clp ATP-dependent protease, which is ubiquitous among prokaryotic eukaryotic organisms. The role these proteins in stress tolerance, stationary-phase adaptive responses, virulence many bacterial species has been demonstrated. Based on amino acid sequences Bacillus subtilis clpC clpP genes, we identified one gene two genes (designated clpP1 clpP2 ) thuringiensis. Predicted ClpP1 ClpP2 have approximately 88 67% sequence identity with B. ,...
Abstract Two specimens of Thysanoptera with forked sensilla on third and fourth antennal segments were described from the Lebanese Neocomian Spanish Albian ambers, attributed to new genus Tethysthrips n. gen. in family Thripidae Stevens 1829. One specimen a tubular tenth abdominal segment was also discovered amber, Rohrthrips belonging Phlaeothripidae Uzel 1895. are nowadays most species-rich families Thysanoptera. The present discoveries Early Cretaceous fossils show how diversified these...
The Late Kimmeridgian marine limestones of the area around Orbagnoux (Rhône, France) are well known for their fish fauna and terrestrial flora. Here we record first insects activities (mines on leaves trails in sediments) from these layers, including oldest gerromorphan bugs, as a new genus species Gallomesovelia grioti, attributed to most basal family Mesoveliidae subfamily Madeoveliinae. These fossils suggest presence complex palaeoecosystem emerged lands near lagoon where were deposited....
Abstract The limits and difficulties related to the tools currently in use for palaeosynecological comparisons of faunas or floras different geological periods are discussed. new method Wagner parsimony Applied Palaeosynecology Using Morphology (WAPUM method), is defined tested on morphological characters gathered from two insect groups Odonatoptera Thripida. monophyly taxonomic used more traditional approaches no longer a problem when using WAPUM method. In character 'presence versus...
The new fossil thrips Uzelothrips eocenicus P. Nel and A. sp.nov.(Thysanoptera: Uzelothripidae) is described from two lowermost Eocene amber-preserved specimens (one macropterous one apterous).The family Uzelothripidae only known so far a single extant species, scabrosus.The fossils differ the species by antennal segments III IV, which appear distinctly separated instead of being fused as in U. scabrosus.Dark-coloured hyphae conidia Dothideomycetes (Ascomycota) are likely to belong sooty...
The Thysanoptera (Paraneoptera) constitute a very diverse order of minute insects, characterized mainly by 'punch-and-suck' mode feeding due to specialized asymmetrical gnathal apparatus with two maxillary stylets plus only one functional mandible. We have studied their fossil relatives from the Thripida family sensu Vishniakova (1981) Vishniakova, V. N. 1981. New Palaeozoic and Mesozoic Lophioneuridae (Thripida). Pp. 43–63 in Vishnyakova, G. M. Dlussky & L. Pritykina (eds) [New insects...
ABSTRACT Bacillus thuringiensis vegetative cells are known to be highly pathogenic when injected into the hemocoel of susceptible insect larvae. This pathogenicity is due capacity B. cause septicemia in host. We screened a mini-Tn 10 insertion library for loss virulence against Bombyx mori larvae on injection hemocoel. Three clones with attenuated were isolated, corresponding two different insertions mapping yqgB / yqfZ locus. Single disruptions and genes did not affect . In contrast,...
Abstract During a palaeontological excavation of amber at the site named San Just, in Utrillas-Escucha area Teruel Province, northeastern Spain, rich fauna from Albian (Early Cretaceous) was discovered. Among it, three specimens Thysanoptera were found that are here attributed to new genus Hispanothrips n. gen. family Stenurothripidae Bagnall 1923. Phylogenetic analyses conducted support resurrection and its replacement for Adiheterothripidae Shumsher 1946. Résumé de l'ambre crétacé...