NCBI Sequence Read Archive

Une nouvelle étude révèle un phénomène inédit dans le règne animal : certaines reines donnent naissance à des mâles d’une autre espèce. Ce mécanisme appelé « xénoparité » permet à leurs colonies de su...

Insect populations have declined worldwide, but the extent and drivers of these declines are debated. Most studies rely on field surveys performed in the past century, leaving gaps in our understandin...

YouTube video by 7 Days of Science

In a case of obligate cross-species cloning, female ants of Messor ibericus need to clone males of Messor structor to obtain sperm for producing the worker caste, resulting in males from the same moth...

In a case of obligate cross-species cloning, female ants of Messor ibericus need to clone males of Messor structor to obtain sperm for producing the worker caste, resulting in males from the same moth...

Ant queens of one species clone ants of another to create hybrid workers that do their bidding.

Phylogenomic analysis of 2524 ultraconserved-element loci from 58 Messor harvester ant species helps in redefining taxonomic groups of the genus. Messor ants emerged in the Irano-Indian area around ...

Toutefois, nous pouvons vous proposer des offres similaires susceptibles de vous intéresser.

Nature - Parasite-ridden ants don’t venture out of the nest, which might help to prolong their lives.

Author summary Current coalescent-based species-delimitation approaches rely on the diagnosis of genetic structure to identify putative taxa. However, when multiple population lineages from the same species are sampled, the conflation of populations with species leads to a proliferation of artifactual “species”, resulting in inaccurate diversity estimates that are challenging systematic studies and fields that rely upon accurately delimited species boundaries. We present here a new approach to delimitation that explicitly models speciation as an extended process, from the formation of new population lineages to the development of independent species. This allows for computational discrimination between genetic structure that corresponds to species lineages versus population lineages within species, transforming species delimitation in both theory and practice in this age of high-resolution genomic data.