The Potential for Rapid Evolution under Anthropogenic Climate Change

Catullo, Renee A.; Llewelyn, John; Phillips, Ben L.; Moritz, Craig

doi:10.1016/j.cub.2019.08.028

Cited by 104 publications

(82 citation statements)

References 123 publications

(160 reference statements)

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“…In particular, future studies may establish whether prenatal exposure to heat-calls and/or high temperatures during development favours the production of heat-calls at adulthood or improves individuals’ thermoregulation capacities. Nonetheless, our findings that thermoregulatory behaviour consistently vary between individuals open the possibility for selection to act on this trait 47 , 48 .…”

Section: Discussionmentioning

confidence: 69%

Vocal panting: a novel thermoregulatory mechanism for enhancing heat tolerance in a desert-adapted bird

Pessato

McKechnie

Buchanan

et al. 2020

Sci Rep

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Animals thriving in hot deserts rely on extraordinary adaptations and thermoregulatory capacities to cope with heat. Uncovering such adaptations, and how they may be favoured by selection, is essential for predicting climate change impacts. Recently, the arid-adapted zebra finch was discovered to program their offspring’s development for heat, by producing ‘heat-calls’ during incubation in hot conditions. Intriguingly, heat-calls always occur during panting; and, strikingly, avian evaporative cooling mechanisms typically involve vibrating an element of the respiratory tract, which could conceivably produce sound. Therefore, we tested whether heat-call emission results from a particular thermoregulatory mechanism increasing the parent’s heat tolerance. We repeatedly measured resting metabolic rate, evaporative water loss (EWL) and heat tolerance in adult wild-derived captive zebra finches (n = 44) at increasing air temperatures up to 44 °C. We found high within-individual repeatability in thermoregulatory patterns, with heat-calling triggered at an individual-specific stage of panting. As expected for thermoregulatory mechanisms, both silent panting and heat-calling significantly increased EWL. However, only heat-calling resulted in greater heat tolerance, demonstrating that “vocal panting” brings a thermoregulatory benefit to the emitter. Our findings therefore not only improve our understanding of the evolution of passerine thermal adaptations, but also highlight a novel evolutionary precursor for acoustic signals.

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Section: Discussionmentioning

confidence: 69%

Vocal panting: a novel thermoregulatory mechanism for enhancing heat tolerance in a desert-adapted bird

Pessato

McKechnie

Buchanan

et al. 2020

Sci Rep

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“…This major perturbation is a natural analog of an anticipated unnatural, human-caused change in the global environment. Whether or not populations have sufficient genetic variation for adaptive responses is the subject of ongoing critical debate (98)(99)(100)(101). One way that variation is enhanced is through interspecific gene exchange (19,102).…”

Section: Discussionmentioning

confidence: 99%

Triad hybridization via a conduit species

Grant

2020

Proc. Natl. Acad. Sci. U.S.A.

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Introgressive hybridization can affect the evolution of populations in several important ways. It may retard or reverse divergence of species, enable the development of novel traits, enhance the potential for future evolution by elevating levels of standing variation, create new species, and alleviate inbreeding depression in small populations. Most of what is known of contemporary hybridization in nature comes from the study of pairs of species, either coexisting in the same habitat or distributed parapatrically and separated by a hybrid zone. More rarely, three species form an interbreeding complex (triad), reported in vertebrates, insects, and plants. Often, one species acts as a genetic link or conduit for the passage of genes (alleles) between two others that rarely, if ever, hybridize. Demographic and genetic consequences are unknown. Here we report results of a long-term study of interbreeding Darwin’s finches on Daphne Major island, Galápagos.Geospiza fortisacted as a conduit for the passage of genes between two others that have never been observed to interbreed on Daphne:Geospiza fuliginosa, a rare immigrant, andGeospiza scandens, a resident. Microsatellite gene flow fromG. fortisintoG. scandensincreased in frequency during 30 y of favorable ecological conditions, resulting in genetic and morphological convergence.G. fortis,G. scandens, and the derived dihybrids and trihybrids experienced approximately equal fitness. Especially relevant to young adaptive radiations, where species differ principally in ecology and behavior, these findings illustrate how new combinations of genes created by hybridization among three species can enhance the potential for evolutionary change.

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“…Ecosystems are currently facing intense pressures related to changes driven by climate change [1][2][3][4]. However, species do not react in the same way to these adaptations, since not all respond equally to different stimuli, such as the increase in the average temperature of the air, decrease in the levels of humidity of the air, increase of the periods of drought, decrease of the precipitation, and alterations in the cycle of the seasons, among others [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Fire as a Selection Agent for the Dissemination of Invasive Species: Case Study on the Evolution of Forest Coverage

et al. 2020

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Climate change has enhanced the occurrence of rural fires, since changes in the hydrological cycle have led to the occurrence of increasingly long and frequent periods of drought. This recurrence of rural fires in Portugal, in turn, has led to the successive elimination of vast areas traditionally occupied by native species or species of economic interest, which are being successively replaced by new species with invasive behavior. Among these, Acacia dealbata stands out for its dispersion capacity and for the area it has already occupied. In the present work, which reviews the evolution of forest cover over the last 18,000 years in the Serra da Estrela Natural Park, we intend to demonstrate that fire acts as a species selection agent and that it enhances the development of heliophile and pyrophyte species. For this purpose, an area of the municipality of Seia was selected, more specifically Casal do Rei, where the development of Acacia dealbata forests is monitored. In the end, it was concluded that, in fact, by analyzing the ages of the specimens present in these populations, fire acts as a selection agent by freeing up the space previously occupied by other species, opening the way for the growth of heliophiles and pyrophytes invasive species while enhancing their germination.

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The Potential for Rapid Evolution under Anthropogenic Climate Change

Cited by 104 publications

References 123 publications

Vocal panting: a novel thermoregulatory mechanism for enhancing heat tolerance in a desert-adapted bird

Vocal panting: a novel thermoregulatory mechanism for enhancing heat tolerance in a desert-adapted bird

Triad hybridization via a conduit species

Fire as a Selection Agent for the Dissemination of Invasive Species: Case Study on the Evolution of Forest Coverage

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