Publications by authors named "James Torrance"

We present a genome assembly from an individual female (the malaria mosquito; Arthropoda; Insecta; Diptera; Culicidae) from Lopé, Gabon. The genome sequence is 225.7 megabases in span.

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We present genome assembly from individual female (African malaria mosquito; Arthropoda; Insecta; Diptera; Culicidae) from Lopé, Gabon. The genome sequence is 270 megabases in span. Most of the assembly is scaffolded into three chromosomal pseudomolecules with the X sex chromosome assembled for both species.

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Article Synopsis
  • Oxford ragwort (Senecio squalidus) is a unique hybrid species that provides insights into genetic changes after hybridization, due to its recent origin and specific genomic traits.
  • The study produced a comprehensive genome assembly, identifying over 30,000 protein-coding genes, with a significant portion of the genome made up of repetitive elements.
  • Key findings include evidence of varied genetic patterns among species, an unequal genetic contribution from the parent species, and the influence of genetic incompatibilities and natural selection on rapid genome stabilization in this hybrid lineage.
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We present a genome assembly from an individual male (the malaria mosquito; Arthropoda; Insecta; Diptera; Culicidae), from a wild population in Cameroon. The genome sequence is 271 megabases in span. The majority of the assembly is scaffolded into three chromosomal pseudomolecules with the X sex chromosome assembled.

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Background:  PacBio high fidelity (HiFi) sequencing reads are both long (15-20 kb) and highly accurate (> Q20). Because of these properties, they have revolutionised genome assembly leading to more accurate and contiguous genomes. In eukaryotes the mitochondrial genome is sequenced alongside the nuclear genome often at very high coverage.

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We present a genome assembly from an individual female (the malaria mosquito; Arthropoda; Insecta; Diptera; Culicidae), Ifakara strain. The genome sequence is 264 megabases in span. Most of the assembly is scaffolded into three chromosomal pseudomolecules with the X sex chromosome assembled.

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  • Notothenioids are a group of fish that thrive in the freezing Southern Ocean, and their evolutionary development includes various genetic adaptations.
  • Researchers created and analyzed genome data from 24 notothenoid species, showing that their radiation began around 10.7 million years ago and revealing significant genome size variations due to transposable elements.
  • The study highlighted key evolutionary changes, including the expansion of antifreeze glycoprotein genes for cold survival and the complete loss of functional haemoglobin genes in icefishes, illustrating how transposon expansions influenced these adaptations.
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We present genome sequences for the caecilians Geotrypetes seraphini (3.8 Gb) and Microcaecilia unicolor (4.7 Gb), representatives of a limbless, mostly soil-dwelling amphibian clade with reduced eyes, and unique putatively chemosensory tentacles.

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We present a genome assembly from an individual female (the malaria mosquito; Arthropoda; Insecta; Diptera; Culicidae). The genome sequence is 251 megabases in span. The majority of the assembly is scaffolded into three chromosomal pseudomolecules with the X sex chromosome assembled.

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Insights into the evolution of non-model organisms are limited by the lack of reference genomes of high accuracy, completeness, and contiguity. Here, we present a chromosome-level, karyotype-validated reference genome and pangenome for the barn swallow (Hirundo rustica). We complement these resources with a reference-free multialignment of the reference genome with other bird genomes and with the most comprehensive catalog of genetic markers for the barn swallow.

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The current human reference genome, GRCh38, represents over 20 years of effort to generate a high-quality assembly, which has benefitted society. However, it still has many gaps and errors, and does not represent a biological genome as it is a blend of multiple individuals. Recently, a high-quality telomere-to-telomere reference, CHM13, was generated with the latest long-read technologies, but it was derived from a hydatidiform mole cell line with a nearly homozygous genome.

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We present a genome assembly from an individual male (the European water vole; Chordata; Mammalia; Rodentia; Cricetidae). The genome sequence is 2.30 gigabases in span.

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The yellowfin seabream, Acanthopagrus latus, is widely distributed throughout the Indo-West Pacific. This species, as a euryhaline Sparidae fish, inhabits in coastal environments with large and frequent salinity fluctuation. So the A.

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Since its initial release in 2000, the human reference genome has covered only the euchromatic fraction of the genome, leaving important heterochromatic regions unfinished. Addressing the remaining 8% of the genome, the Telomere-to-Telomere (T2T) Consortium presents a complete 3.055 billion-base pair sequence of a human genome, T2T-CHM13, that includes gapless assemblies for all chromosomes except Y, corrects errors in the prior references, and introduces nearly 200 million base pairs of sequence containing 1956 gene predictions, 99 of which are predicted to be protein coding.

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Background: The tufted duck is a non-model organism that experiences high mortality in highly pathogenic avian influenza outbreaks. It belongs to the same bird family (Anatidae) as the mallard, one of the best-studied natural hosts of low-pathogenic avian influenza viruses. Studies in non-model bird species are crucial to disentangle the role of the host response in avian influenza virus infection in the natural reservoir.

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We present a genome assembly from a clonal population of Houghton parasites (Apicomplexa; Conoidasida; Eucoccidiorida; Eimeriidae). The genome sequence is 53.25 megabases in span.

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Article Synopsis
  • - The text discusses a genome assembly for a female European golden eagle, which belongs to the chordate class of birds.
  • - The genome size is 1.23 gigabases, indicating the total length of the DNA sequence obtained.
  • - The assembly consists of 28 chromosomal pseudomolecules, which includes both the W and Z sex chromosomes, used to organize the genetic information.
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We present a genome assembly from an individual male (the Norway rat; Chordata; Mammalia; Rodentia; Muridae). The genome sequence is 2.44 gigabases in span.

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We present a genome assembly from an individual female (the brown trout; Chordata; Actinopteri; Salmoniformes; Salmonidae). The genome sequence is 2.37 gigabases in span.

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The reed warbler (Acrocephalus scirpaceus) is a long-distance migrant passerine with a wide distribution across Eurasia. This species has fascinated researchers for decades, especially its role as host of a brood parasite, and its capacity for rapid phenotypic change in the face of climate change. Currently, it is expanding its range northwards in Europe, and is altering its migratory behavior in certain areas.

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We present a genome assembly from an individual female (the European turtle dove; Chordata; Aves; Columbidae). The genome sequence is 1.18 gigabases in span.

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With the advent of chromatin-interaction maps, chromosome-level genome assemblies have become a reality for a wide range of organisms. Scaffolding quality is, however, difficult to judge. To explore this gap, we generated multiple chromosome-scale genome assemblies of an emerging wild animal model for carcinogenesis, the California sea lion (Zalophus californianus).

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Article Synopsis
  • Scientists need good reference genomes to study biology, diseases, and protect wildlife, but there are only a few for non-microbial species.
  • The Genome 10K (G10K) group worked for five years to improve the way they create these high-quality genomes and gathered information from 16 different animal species.
  • Their work showed that special long-read technology improves genome quality, fixed errors in old genome sequences, and discovered new things about genes and chromosomes, leading to a new project to create complete genomes for about 70,000 vertebrate species.
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Background: Modern sequencing technologies should make the assembly of the relatively small mitochondrial genomes an easy undertaking. However, few tools exist that address mitochondrial assembly directly.

Results: As part of the Vertebrate Genomes Project (VGP) we develop mitoVGP, a fully automated pipeline for similarity-based identification of mitochondrial reads and de novo assembly of mitochondrial genomes that incorporates both long (> 10 kbp, PacBio or Nanopore) and short (100-300 bp, Illumina) reads.

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Hermetia illucens L. (Diptera: Stratiomyidae), the Black Soldier Fly (BSF) is an increasingly important species for bioconversion of organic material into animal feed. We generated a high-quality chromosome-scale genome assembly of the BSF using Pacific Bioscience, 10X Genomics linked read and high-throughput chromosome conformation capture sequencing technology.

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