Divergent evolutionary trajectories following speciation in two ectoparasitic honey bee mites

Techer, Maéva Angélique; Rane, Rahul; Grau, Miguel L.; Roberts, John M. K.; Sullivan, Shawn; Liachko, Ivan; Childers, Anna K.; Evans, Jay D.; Mikheyev, Alexander S.

doi:10.1038/s42003-019-0606-0

Cited by 69 publications

(79 citation statements)

References 120 publications

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“…Additional insight into varroa's basic biology, genetic architecture and demographic history are necessary to develop sustainable control measures and breeding programs. The updated varroa genome [5] is a step toward leveraging population genomics and understanding varroa diaspora success despite limited genetic diversity. But we should simultaneously prepare for two other mites that may soon spread worldwide.…”

Section: Discussionmentioning

confidence: 99%

“…Varroa incurs only limited damage to A. cerana colonies due to several host defense mechanisms that impact varroa reproduction: mite infertility in worker brood, entombment of drone brood infested with multiple mites, and increased hygienic behavior (reviewed in [4]). The recently re-updated varroa genome (GCA_002443255.1) [5] will be a powerful tool to help understand varroa evolution in response to honey bee novel defenses traits, host-switching, and successful global invasion.…”

Section: A Formidable Foementioning

confidence: 99%

See 1 more Smart Citation

Varroa destructor: A Complex Parasite, Crippling Honey bees Worldwide

Traynor¹,

Mondet

Miranda³

et al. 2020

Preprint

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The parasitic mite, Varroa destructor, has shaken the beekeeping and pollination industries since its spread from its native host, the Asian honey bee (Apis cerana), to the naïve European honey bee (A. mellifera) used commercially for pollination and honey production around the globe. Varroa is the greatest threat to honey bee health. Worrying observations include increasing acaricide resistance in the varroa population and sinking economic treatment thresholds, suggesting that the mites or their vectored viruses are becoming more virulent. Highly infested weak colonies facilitate mite dispersal and disease transmission to stronger and healthier colonies. Here, we review recent developments in the biology, pathology and management of varroa, and integrate older knowledge that is less well known.

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Section: Discussionmentioning

confidence: 99%

Section: A Formidable Foementioning

confidence: 99%

Varroa destructor: A Complex Parasite, Crippling Honey bees Worldwide

Traynor¹,

Mondet

Miranda³

et al. 2020

Preprint

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“…A broader phylogenomic sampling of Leptinotarsa , or other species that vary in host use (e.g. Techer et al 2019), needs to be studied in order to disentangle the relative importance of host switches on rates of positive selection. Furthermore, there is a clear pattern of selection on molecular pathways related to detoxification within the pest CPB lineages.…”

Section: Discussionmentioning

confidence: 99%

Elevated rates of positive selection drive the evolution of pestiferousness in the Colorado potato beetle (Leptinotarsa decemlineata, Say)

Cohen

Brevik

Chen

et al. 2019

Preprint

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19Insect pests are characterized by expansion, preference and performance on agricultural 20 crops, high fecundity and rapid adaptation to control methods, which we collectively refer to as 21 pestiferousness. Which organismal traits and evolutionary processes facilitate certain taxa 22 becoming pests remains an outstanding question for evolutionary biologists. In order to 23 understand these features, we set out to test the relative importance of genomic properties that 24 underlie the rapid evolution of pestiferousness in the emerging pest model: the Colorado potato 25 beetle (CPB), Leptinotarsa decemlineata Say. Within the Leptinotarsa genus, only CPB has 26 risen to pest status on cultivated Solanum. Using whole genomes from ten closely related 27 Leptinotarsa species, we reconstructed a high-quality species tree of this genus. Within this 28 phylogenetic framework, we tested the relative importance of four drivers of rapid adaptation: 29 standing genetic variation, gene family expansion and contraction, transposable element 30 variation, and protein evolution. Throughout approximately 20 million years of divergence, 31 Leptinotarsa show little evidence of gene family turnover or transposable element variation 32 contributing to pest evolution. However, there is a clear pattern of pest lineages experiencing 33 greater rates of positive selection on protein coding genes, as well as retaining higher levels of 34 standing genetic variation. We also identify a suite of positively selected genes unique to the 35 Colorado potato beetle that are directly associated with pestiferousness. These genes are 36 involved in xenobiotic detoxification, chemosensation, and hormones linked with pest behavior 37 and physiology.38 39

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“…The efficiency of host resistance traits may vary according to the genome of the parasite (Garrido et al, 2003;Morgan and Koskella, 2017). Natural selection in mites infesting managed selected colonies could lead to selective trajectories impacting both the genetic diversity and virulence of mites (Dynes et al, 2019;Eliash and Mikheyev, 2019;Techer et al, 2019), thereby possibly limiting the efficiency of previously selected traits against the parasite.…”

Section: Reducing the Genetic Diversity And Virulence Of The Parasitementioning

confidence: 99%

Three Decades of Selecting Honey Bees that Survive Infestations by the Parasitic Mite Varroa destructor: Outcomes, Limitations and Strategy

Guichard¹,

Dietemann²,

Neuditschko³

et al. 2020

Preprint

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Despite the implementation of control strategies, the invasive parasitic mite Varroa destructor remains one of the principal causes of honey bee (Apis mellifera) colony losses in numerous countries. For this reason, the parasite represents a serious threat to beekeeping and to agro-ecosystems that benefit from the pollination services provided by honey bees. Numerous selection programmes have been initiated over the last three decades with the aim of promoting the establishment of balance in the host–parasite relationship and, thus, helping European honey bees to survive in the presence of the parasite without the need for acaricide treatments. Such programmes have focused on either selective breeding for putative resistance traits or natural selection. To date, no clear overview of these attempts has been available, which has prevented building on past successes or failures and, therefore, hindered the development of a sustainable strategy for solving the V. destructor problem. In the present study, we review past and current selection strategies, report on their outcomes and discuss their limitations. Based on this state-of-the-art knowledge, we propose a strategy for increasing response to selection and colony survival against V. destructor infestations. Developing in-depth knowledge regarding the selected traits, optimising selection programmes and communicating their outcomes are all crucial to our efforts to establish a balanced relationship between the invasive parasite and its new host.

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Divergent evolutionary trajectories following speciation in two ectoparasitic honey bee mites

Cited by 69 publications

References 120 publications

<em>Varroa destructor</em>: A Complex Parasite, Crippling Honey bees Worldwide

<em>Varroa destructor</em>: A Complex Parasite, Crippling Honey bees Worldwide

Elevated rates of positive selection drive the evolution of pestiferousness in the Colorado potato beetle (Leptinotarsa decemlineata, Say)

Three Decades of Selecting Honey Bees that Survive Infestations by the Parasitic Mite <em>Varroa destructor</em>: Outcomes, Limitations and Strategy

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