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6. Chromosome-Level Assembly and Annotation of the Genome of the Endangered Giant Patagonian Bumble Bee Bombus dahlbomii.

Author

Martínez, Lican, Zattara, Eduardo E, Arbetman, Marina P, Morales, Carolina L, Masonbrink, Rick E, Severin, Andrew J, Aizen, Marcelo A, and Toth, Amy L

Subjects
GENOME size, BUMBLEBEES, RNA sequencing, ENDANGERED species, GENOMES
Abstract

This article describes a genome assembly and annotation for Bombus dahlbomii , the giant Patagonian bumble bee. DNA from a single, haploid male collected in Argentina was used for PacBio (HiFi) sequencing, and Hi-C technology was then used to map chromatin contacts. Using Juicer and manual curation, the genome was scaffolded into 18 main pseudomolecules, representing a high-quality, near chromosome-level assembly. The sequenced genome size is estimated at 265 Mb. The genome was annotated based on RNA sequencing data of another male from Argentina, and BRAKER3 produced 15,767 annotated genes. The genome and annotation show high completeness, with >95% BUSCO scores for both the genome and annotated genes (based on conserved genes from Hymenoptera). This genome provides a valuable resource for studying the biology of this iconic and endangered species, as well as for understanding the impacts of its decline and designing strategies for its preservation. [ABSTRACT FROM AUTHOR]

Published
2024
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16. WASPnest : a worldwide assessment of social Polistine nesting behavior

Author

Miller, Sara E., Bluher, Sarah E., Bell, Emily, Cini, Alessandro, da Silva, Rafael Carvalho, de Souza, André Rodrigues, Gandia, Kristine M., Jandt, Jennifer, Loope, Kevin, Prato, Amanda, Pruitt, Jonathan N., Rankin, David, Rankin, Erin, Southon, Robin J., Uy, Floria M. K., Weiner, Susan, Wright, Colin M., Downing, Holly, Gadagkar, Raghavendra, Lorenzi, M. Cristina, Rusina, Lidiya, Sumner, Seirian, Tibbetts, Elizabeth A., Toth, Amy, and Sheehan, Michael J.

Published
2018

37. Co-expression Gene Networks and Machine-learning Algorithms Unveil a Core Genetic Toolkit for Reproductive Division of Labour in Rudimentary Insect Societies.

Author

Favreau, Emeline, Geist, Katherine S, Wyatt, Christopher D R, Toth, Amy L, Sumner, Seirian, and Rehan, Sandra M

Subjects
DIVISION of labor, MACHINE learning, SUPERVISED learning, GENE regulatory networks, INSECT societies, EUSOCIALITY, HONEYBEES, LIFE history theory, BEES
Abstract

The evolution of eusociality requires that individuals forgo some or all their own reproduction to assist the reproduction of others in their group, such as a primary egg-laying queen. A major open question is how genes and genetic pathways sculpt the evolution of eusociality, especially in rudimentary forms of sociality—those with smaller cooperative nests when compared with species such as honeybees that possess large societies. We lack comprehensive comparative studies examining shared patterns and processes across multiple social lineages. Here we examine the mechanisms of molecular convergence across two lineages of bees and wasps exhibiting such rudimentary societies. These societies consist of few individuals and their life histories range from facultative to obligately social. Using six species across four independent origins of sociality, we conduct a comparative meta-analysis of publicly available transcriptomes. Standard methods detected little similarity in patterns of differential gene expression in brain transcriptomes among reproductive and non-reproductive individuals across species. By contrast, both supervised machine learning and consensus co-expression network approaches uncovered sets of genes with conserved expression patterns among reproductive and non-reproductive phenotypes across species. These sets overlap substantially, and may comprise a shared genetic "toolkit" for sociality across the distantly related taxa of bees and wasps and independently evolved lineages of sociality. We also found many lineage-specific genes and co-expression modules associated with social phenotypes and possible signatures of shared life-history traits. These results reveal how taxon-specific molecular mechanisms complement a core toolkit of molecular processes in sculpting traits related to the evolution of eusociality. [ABSTRACT FROM AUTHOR]

Published
2023
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