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Here we present a draft genome sequence of the nematode Pristionchus pacificus, a species that is associated with beetles and is used as a model system in evolutionary biology. With 169 Mb and 23,500 predicted protein-coding genes, the P. pacificus genome is larger than those of Caenorhabditis elegans and the human parasite Brugia malayi. Compared to C.(More)
Evolutionary reconstruction of the natural history of an organism ultimately requires knowledge about the development, population genetics, ecology, and phylogeny of the species. Such investigations would benefit from studies of mutational processes because mutations are the source of natural variation. The nematode Pristionchus pacificus has been developed(More)
To understand the evolution of developmental processes, nonmodel organisms in the nematodes, insects, and vertebrates are compared with established model systems. Often, these comparisons suffer from the inability to apply sophisticated technologies to these nonmodel species. In the nematode Pristionchus pacificus, cellular and genetic analyses are used to(More)
The hermaphroditic nematode Pristionchus pacificus is an established model system for comparative studies with Caenorhabditis elegans in developmental biology, ecology, and population genetics. In this study, we present whole-genome sequencing data of 104 P. pacificus strains and the draft assembly of the obligate outcrossing sister species P. exspectatus.(More)
The geographical mosaic theory of coevolution predicts that different local species interactions will shape population traits, but little is known about the molecular factors involved in mediating the specificity of these interactions. Pristionchus nematodes associate with different scarab beetles around the world, with Pristionchus pacificus isolated(More)
Modern evolutionary biology requires integrative approaches that combine life history, population structure, ecology, and development. The nematode Pristionchus pacificus has been established as a model system in which these aspects can be studied in one organism. P. pacificus has well-developed genetic, genomic, and transgenic tools and its ecologic(More)
For modern biology, precise genome annotations are of prime importance, as they allow the accurate definition of genic regions. We employ state-of-the-art machine learning methods to assay and improve the accuracy of the genome annotation of the nematode Caenorhabditis elegans. The proposed machine learning system is trained to recognize exons and introns(More)
The diplogastrid nematode Pristionchus pacificus is a nematode model system for comparative studies to Caenorhabditis elegans and integrative evolutionary biology aiming for interdisciplinary approaches of evo-devo, population genetics, and ecology. For this, fieldwork can be combined with laboratory studies, and P. pacificus has a well-developed(More)
Bacterial pathogens have shaped the evolution and survival of organisms throughout history, but little is known about the evolution of virulence mechanisms and the counteracting defence strategies of host species. The nematode model organisms, Caenorhabditis elegans and Pristionchus pacificus, feed on a wealth of bacteria in their natural soil environment,(More)
Pristionchus pacificus, recently established as a model organism in evolutionary biology, is a cosmopolitan nematode that has a necromenic association with scarab beetles. The diverse array of host beetle species and habitat types occupied by P. pacificus make it a good model for investigating local adaptation to novel environments. Presence of P. pacificus(More)