Dataset Information

Mitochondrial Genome Sequences of Diorhabda carinata and Diorhabda carinulata, Two Beetle Species Introduced to North America for Biological Control.

ABSTRACT: We announce the complete circularized mitochondrial genome assemblies of Diorhabda carinata and Diorhabda carinulata, beetle species introduced to North America for the biological control of invasive shrubs of the genus Tamarix L. (Tamaricaceae). The assemblies (16,232 and 16,298 bp, respectively) each comprise 13 protein-coding genes, 22 tRNAs, two rRNAs, and a noncoding region.

SUBMITTER: Stahlke AR

PROVIDER: S-EPMC6715869 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Mitochondrial Genome Sequences of Diorhabda carinata and Diorhabda carinulata, Two Beetle Species Introduced to North America for Biological Control.

Stahlke A R AR Ozsoy A Z AZ Bean D W DW Hohenlohe P A PA

Microbiology resource announcements 20190829 35

We announce the complete circularized mitochondrial genome assemblies of Diorhabda carinata and Diorhabda carinulata, beetle species introduced to North America for the biological control of invasive shrubs of the genus Tamarix L. (Tamaricaceae). The assemblies (16,232 and 16,298 bp, respectively) each comprise 13 protein-coding genes, 22 tRNAs, two rRNAs, and a noncoding region. ...[more]

PMID: 31467099

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Project description:With the global rise of human-mediated translocations and invasions, it is critical to understand the genomic consequences of hybridization and mechanisms of range expansion. Conventional wisdom is that high genetic drift and loss of genetic diversity due to repeated founder effects will constrain introduced species. However, reduced genetic variation can be countered by behavioral aspects and admixture with other distinct populations. As planned invasions, classical biological control (biocontrol) agents present important opportunities to understand the mechanisms of establishment and spread in a novel environment. The ability of biocontrol agents to spread and adapt, and their effects on local ecosystems, depends on genomic variation and the consequences of admixture in novel environments. Here, we use a biocontrol system to examine the genome-wide outcomes of introduction, spread, and hybridization in four cryptic species of a biocontrol agent, the tamarisk beetle (Diorhabda carinata, D. carinulata, D. elongata, and D. sublineata), introduced from six localities across Eurasia to control the invasive shrub tamarisk (Tamarix spp.) in western North America. We assembled a de novo draft reference genome and applied RADseq to over 500 individuals across laboratory cultures, the native ranges, and the introduced range. Despite evidence of a substantial genetic bottleneck among D. carinulata in N. America, populations continue to establish and spread, possibly due to aggregation behavior. We found that D. carinata, D. elongata, and D. sublineata hybridize in the field to varying extents, with D. carinata × D. sublineata hybrids being the most abundant. Genetic diversity was greater at sites with hybrids, highlighting potential for increased ability to adapt and expand. Our results demonstrate the complex patterns of genomic variation that can result from introduction of multiple ecotypes or species for biocontrol, and the importance of understanding them to predict and manage the effects of biocontrol agents in novel ecosystems.

Dataset Information

Mitochondrial Genome Sequences of Diorhabda carinata and Diorhabda carinulata, Two Beetle Species Introduced to North America for Biological Control.

Publications

Mitochondrial Genome Sequences of <i>Diorhabda carinata</i> and <i>Diorhabda carinulata</i>, Two Beetle Species Introduced to North America for Biological Control.

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