Translocation precipitates natural hybridisation and pervasive introgression between marine gastropods with divergent developmental modes

Cummins, Deanne; Johnson, M. S.; Tomkins, Joseph L.; Kennington, W. Jason

doi:10.1016/j.biocon.2023.110135

Cited by 2 publications

(1 citation statement)

References 61 publications

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“…Human‐mediated species introductions can result in hybridization and genetic introgression with closely related native species, sometimes resulting in outbreeding depression (e.g., reduced fitness; Muhlfeld, Kalinowski, McMahon, et al., 2009 ; Muhlfeld, Mcmahon, Belcer, & Kershner, 2009 ; Muhlfeld, McMahon, Boyer, & Gresswell, 2009 ), ecological displacement of native species, and loss of native species diversity (Cucherousset & Olden, 2011 ; Gozlan et al., 2010 ). In extreme cases, hybridization can lead to a hybrid swarm and genomic extinction of native species (Allendorf et al., 2001 ; Cummins et al., 2023 ; Smith, 2023 ). Moreover, climate change can exacerbate the spread of invasive hybridization (Muhlfeld et al., 2014 ), so this problem will likely become more serious in the future (Arce‐Valdés & Sánchez‐Guillén, 2022 ; Kelly et al., 2010 ).…”

Section: Introductionmentioning

confidence: 99%

Local environments, not invasive hybridization, influence cardiac performance of native trout under acute thermal stress

Strait,

Grummer,

Hoffman

et al. 2024

Evolutionary Applications

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Climate‐induced expansion of invasive hybridization (breeding between invasive and native species) poses a significant threat to the persistence of many native species worldwide. In the northern U.S. Rocky Mountains, hybridization between native cutthroat trout and non‐native rainbow trout has increased in recent decades due, in part, to climate‐driven increases in water temperature. It has been postulated that invasive hybridization may enhance physiological tolerance to climate‐induced thermal stress because laboratory studies indicate that rainbow trout have a higher thermal tolerance than cutthroat trout. Here, we assessed whether invasive hybridization improves cardiac performance response to acute water temperature stress of native wild trout populations. We collected trout from four streams with a wide range of non‐native admixture among individuals and with different temperature and streamflow regimes in the upper Flathead River drainage, USA. We measured individual cardiac performance (maximum heart rate, “MaxHR”, and temperature at arrhythmia, “ArrTemp”) during laboratory trials with increasing water temperatures (10–28°C). Across the study populations, we observed substantial variation in cardiac performance of individual trout when exposed to thermal stress. Notably, we found significant differences in the cardiac response to thermal regimes among native cutthroat trout populations, suggesting the importance of genotype‐by‐environment interactions in shaping the physiological performance of native cutthroat trout. However, rainbow trout admixture had no significant effect on cardiac performance (MaxHR and ArrTemp) within any of the three populations. Our results indicate that invasive hybridization with a warmer‐adapted species does not enhance the cardiac performance of native trout under warming conditions. Maintaining numerous populations across thermally and hydrologically diverse stream environments will be crucial for native trout to adapt and persist in a warming climate.

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Section: Introductionmentioning

confidence: 99%

Local environments, not invasive hybridization, influence cardiac performance of native trout under acute thermal stress

Strait,

Grummer,

Hoffman

et al. 2024

Evolutionary Applications

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Vulnerability of endemic insular mole skinks to sea‐level rise

Koen,

Barichivich,

Walls

2024

Conservat Sci and Prac

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Although coastal islands are home to many endemic species, they are also at risk of inundation from storm surge and sea level rise. Three subspecies of mole skink (Plestiodon egregius egregius, P. e. insularis, and the Egmont Key Mole Skink known from a single occurrence) occur on a small number of islands off the Gulf Coast of Florida, USA. We used the most recent sea level rise projections and the latest storm surge simulation data to predict impacts to habitat for insular mole skinks in Florida from 2030 to 2150. Our models predicted that in <100 years (by 2100; intermediate sea level rise scenario; ~1.08–1.15 m sea level rise), >78% of preferred habitat for the Florida Keys Mole Skink, >65% of preferred habitat for the Cedar Key Mole Skink, and >36% of preferred habitat for the Egmont Key Mole Skink will be inundated from sea level rise. Storm surge from tropical cyclones presents a more immediate risk to insular mole skink habitat: our models predicted that between 58% and 75% of Florida Keys Mole Skink habitat is at risk of being submerged under an average maximum of between 0.60 (SD = 0.86) and 0.98 (SD = 0.36) m of storm surge water for a category 1 storm, and the amount of habitat predicted to be impacted increases for higher intensity storms. Our models predicted similar trends for Cedar Key and Egmont Key Mole Skink habitat. Given current sea level rise projections, our models predicted that all three subspecies could be extinct by 2140 due to habitat inundation. There remains uncertainty about how species and ecosystems will respond to sea level rise, thus research to fill these gaps could help mitigate the effects of sea level rise in areas most vulnerable to the effects of climate change.

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Translocation precipitates natural hybridisation and pervasive introgression between marine gastropods with divergent developmental modes

Cited by 2 publications

References 61 publications

Local environments, not invasive hybridization, influence cardiac performance of native trout under acute thermal stress

Local environments, not invasive hybridization, influence cardiac performance of native trout under acute thermal stress

Vulnerability of endemic insular mole skinks to sea‐level rise

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