Whole‐Genome Evaluation of Genetic Rescue: The Case of a Curiously Isolated and Endangered Butterfly

Molecular Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Genetic rescue, or the translocation of individuals among populations to augment gene flow, can help ameliorate inbreeding depression and loss adaptive potential in small isolated populations. rescue is currently under consideration for an endangered butterfly Canada, Half-moon Hairstreak (Satyrium semiluna). A small, unique population persists Waterton Lakes National Park, Alberta, from other by more than 400 km. However, whether genetic would actually be helpful has not been evaluated. Here, we generate first chromosome-level genome assembly whole-genome resequence data species. We find that Alberta maintains extremely low diversity genetically very divergent nearest British Columbia Montana. Runs homozygosity suggest this due a long history inbreeding, coalescent analyses show isolated, yet stable, up 40k years. When like its viability despite diversity, it likely undergone purging deleterious recessive alleles could threatened reintroduction such via rescue. Ecological niche modelling indicates also exhibits environmental associations are atypical Together, these evolutionary ecological divergences crosses may result outbreeding depression. therefore infer relatively harmful rather at present. because reduced potential, still benefit future as climate habitat conditions change. Proactive experimental should completed assess reproductive compatibility progeny fitness.

Language: Английский

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Integrated morpho-physiological, transcriptomic and metabolomic data to reveal the differential chilling defense mechanisms of two ecologically diverged species of Forsythia

Horticultural Plant Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Niche differentiation, reproductive interference, and range expansion

Ecology Letters, Journal Year: 2023, Volume and Issue: 27(1)

Published: Dec. 8, 2023

Abstract Understanding species distributions and predicting future range shifts requires considering all relevant abiotic factors biotic interactions. Resource competition has received the most attention, but reproductive interference is another widespread interaction that could influence ranges. Rubyspot damselflies ( Hetaerina spp.) exhibit a biogeographic pattern consistent with hypothesis limited expansion. Here, we use ecological niche models to evaluate whether this have instead been caused by differentiation. We found evidence for climatic differentiation, encounters least one of narrowest peripheral niches. These findings strengthen case expansion also provide counterexample idea release from negative interactions triggers propose enables expand in while specializing on habitats suitable breeding.

Language: Английский

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Spatiotemporal dynamics of non-ecological speciation in rubyspot damselflies (Hetaerinaspp.)

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 12, 2024

Abstract Non-ecological speciation is a common mode of which occurs when allopatric lineages diverge in the absence pronounced ecological differences. Yet, relative to other mechanisms, non-ecological remains understudied. Numerous damselfly clades are characterized as non-adaptive radiations (the result several rounds speciation), but there few for we have detailed understanding spatiotemporal dynamics divergence. Recent phylogeographic analyses demonstrate that American rubyspot damselflies ( Hetaerina americana sensu lato) actually comprise at least two cryptic coexist sympatrically across most Mexico. To broaden our diversification lineages, investigated history smoky titia ) using genomic data collected Central and North America. Unexpectedly, found evidence reproductive isolation between highly genetically differentiated Pacific Atlantic H. narrow secondary contact zone on Isthmus Tehuantepec, We then fit models historical demography both lato place these comparisons temporal context. Our findings indicate split more recently than broadly sympatric within lato, supporting key assumptions model demonstrating pairs sister different stages cycle.

Language: Английский

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Sex in the kitchen: non-additive effects of competition for food and reproductive interference on coexistence outcomes between sibling species

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 13, 2023

Abstract Competition for food and reproductive interference (negative interspecific sexual interactions) have been identified as major drivers of species exclusion. Still, how these biotic interactions jointly determine competitive dominance remains largely unknown. We tackle this by coupling population models laboratory experiments with two spider mite sibling species. Using specifically designed to measure the single combined effects competition interference, we first show that strength symmetry between changes in presence competition. Next, incorporating each type interaction alone or their when lead markedly different predictions, from exclusion one other, less abundant Moreover, accounting observed reduction threshold frequency determining dominant competitor, favouring superior competitor food. Finally, model predictions short-term dynamics were corroborated an independent cage experiment. Altogether, our results suggest trophic can modulate interactions, significantly impacting outcomes. Hence, joint consideration is critical accurately predict understand coexistence.

Language: Английский

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Niche-based Memetic algorithm with adaptive parameters for optimizing order delivery strategies in O2O platforms

Applied Intelligence, Journal Year: 2024, Volume and Issue: 55(2)

Published: Dec. 9, 2024

Language: Английский

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