Species-dense genomics through natural history collections.
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Journal Article↗
Biomedical subjects
Gavin R Broad
Publications and source records attributed to Gavin R Broad.
Museum specimens reveal the genomic consequences of long-term population decline in an insect pollinator.
Global insect pollinator populations are under threat, with reported declines attributed to increasing habitat loss, pesticide use, and disease. Tracking how genetic diversity has changed over time could reveal the rate and extent of these declines, and the adaptive capacity of affected species-providing an important complement to habitat-based conservation efforts. However, few studies have been able to reconstruct suitable historical baselines to link genomic changes with population change. Here, we use whole genome data from 101 museum specimens of the declining moss carder bumblebee (Bombus muscorum) collected across Britain and Ireland between 1894 and 2019 to reveal a dramatic drop in genetic diversity over the last century. We find a substantial (∼24.6%) reduction in genome-wide heterozygosity across Britain during this period. In England and Wales, where habitat fragmentation is most pronounced, we observe a 2.86-fold increase in runs of homozygosity, commensurate with population fragmentation and isolation. Our results reveal the extent to which human-induced environmental change can lead to severe decadal-scale genomic erosion in a functionally important insect. Identified using DNA from historic museum collections, our approach has widespread applicability for insect conservation and understanding the evolutionary consequences of environmental change.
Animals↗
The genome sequence of an ichneumonid wasp, Ophion crassicornis Brock, 1982 (Hymenoptera: Ichneumonidae).
We present a genome assembly from an individual female Ophion crassicornis (ichneumonid wasp; Arthropoda; Insecta; Hymenoptera; Ichneumonidae). The genome sequence has a total length of 726.34 megabases. Most of the assembly (98.51%) is scaffolded into 13 chromosomal pseudomolecules. The mitochondrial genome has also been assembled, with a length of 38.03 kilobases. This assembly was generated as part of the Darwin Tree of Life project, which produces genomes for eukaryotic species found in Britain and Ireland.
Hymenoptera↗
The genome sequence of an ichneumonid wasp, Promethes sulcator (Gravenhorst, 1829) (Hymenoptera: Ichneumonidae).
We present a genome assembly from an individual female Promethes sulcator (ichneumonid wasp; Arthropoda; Insecta; Hymenoptera; Ichneumonidae). The genome sequence has a total length of 278.74 megabases. Most of the assembly (99.67%) is scaffolded into 10 chromosomal pseudomolecules. The mitochondrial genome has also been assembled, with a length of 29.43 kilobases. This assembly was generated as part of the Darwin Tree of Life project, which produces genomes for eukaryotic species found in Britain and Ireland.
Hymenoptera↗
The genome sequence of an ichneumonid wasp, Netelia melanura (Thomson, 1888) (Hymenoptera: Ichneumonidae).
We present a genome assembly from an individual male Netelia melanura (ichneumonid wasp; Arthropoda; Insecta; Hymenoptera; Ichneumonidae). The genome sequence has a total length of 253.87 megabases. Most of the assembly (94.81%) is scaffolded into 7 chromosomal pseudomolecules. The mitochondrial genome has also been assembled, with a length of 28.04 kilobases. This assembly was generated as part of the Darwin Tree of Life project, which produces reference genomes for eukaryotic species found in Britain and Ireland.
Netelia melanura; ichneumonid wasp; genome sequenc↗
The genome sequence of the Common Marble, Celypha lacunana (Denis & Schiffermüller, 1775) (Lepidoptera: Tortricidae).
We present a genome assembly from a male specimen of Celypha lacunana (Common Marble; Arthropoda; Insecta; Lepidoptera; Tortricidae). The genome sequence has a total length of 591.83 megabases. Most of the assembly (99.68%) is scaffolded into 27 chromosomal pseudomolecules. The mitochondrial genome has also been assembled, with a length of 17.21 kilobases.
Celypha lacunana↗