期刊
G3-GENES GENOMES GENETICS
卷 12, 期 3, 页码 -出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/g3journal/jkac001
关键词
parthenogenesis; Braconid wasps; phylogenomics; ancestral state reconstruction
资金
- National Institute of Food and Agriculture, U.S. Department of Agriculture, Hatch Program [1008480]
- University of Kentucky
- NSF CAREER [2042516]
- NSF ABI Development [1664918]
- USDA NIFA [2017-06423]
- NSF REU [1852189]
- CSUSM GPSM [86969]
- CSUPERB COVID-19 Research Recovery Microgrant
- National Science Foundation through major research instrumentation grant [1625061]
- US Army Research Laboratory [W911NF-16-2-0189]
- Direct For Computer & Info Scie & Enginr
- Division Of Computer and Network Systems [1625061] Funding Source: National Science Foundation
- Div Of Biological Infrastructure
- Direct For Biological Sciences [2042516] Funding Source: National Science Foundation
- Div Of Biological Infrastructure
- Direct For Biological Sciences [1852189] Funding Source: National Science Foundation
The research reveals at least two independent origins of eusociality and solitary behavior in Hymenoptera, as well as two independent origins of thelytokous parthenogenesis from ancestral arrhenotoky. Additionally, accelerated rates of gene duplications, loss, and gain were observed in the lineages leading to D. coccinellae, indicating ancient divergence of Braconid wasps and rapid evolution in response to adaptations to novel hosts.
Dinocampus coccinellae (Hymenoptera: Braconidae) is a generalist parasitoid wasp that parasitizes >50 species of predatory lady beetles (Coleoptera: Coccinellidae), with thelytokous parthenogeny as its primary mode of reproduction. Here, we present the first high-quality genome of D. coccinellae using a combination of short- and long-read sequencing technologies, followed by assembly and scaffolding of chromosomal segments using Chicago + HiC technologies. We also present a first-pass ab initio and a reference-based genome annotation and resolve timings of divergence and evolution of (1) solitary behavior vs eusociality, (2) arrhenotokous vs thelytokous parthenogenesis, and (3) rates of gene loss and gain among Hymenopteran lineages. Our study finds (1) at least 2 independent origins of eusociality and solitary behavior among Hymenoptera, (2) 2 independent origins of thelytokous parthenogenesis from ancestral arrhenotoky, and (3) accelerated rates of gene duplications, loss, and gain along the lineages leading to D. coccinellae. Our work both affirms the ancient divergence of Braconid wasps from ancestral Hymenopterans and accelerated rates of evolution in response to adaptations to novel hosts, including polyDNA viral coevolution.
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