Predator presence and recent climatic warming raise body temperatures of island lizards

Yuan, Félix Landry; Ito, Shun; Tsang, Toby P. N.; Kuriyama, Takeo; Yamasaki, Kaede; Bonebrake, Timothy C.; Hasegawa, Masami

doi:10.1111/ele.13671

Cited by 6 publications

(4 citation statements)

References 59 publications

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“…For example, in Mesoamerican cane toads ( Rhinella horribilis ; Kelehear et al, 2019), locomotion was negatively affected by lung nematode infection. In the case of lizards, sprint speed is important when foraging and for escaping from predators (Landry Yuan et al, 2021; Pagan et al, 2012). Garden skinks are ground‐dwelling species preyed upon by a range of elapid snakes (Richard Shine, 1995).…”

Section: Discussionmentioning

confidence: 99%

Are whole‐organism performance and thermal preference linked to endo‐ and ectoparasites in a short‐lived lizard?

2023

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Wild animals are often concurrently infected by multiple parasites, which are assumed to negatively affect their host by exploiting the host's resources. The cumulative effect of parasite infections is often not studied. Despite this assumption, many hosts do not suffer significant costs from parasitism in the wild. Hosts can adapt to parasitic infections by mounting physiological and behavioural defences. A commonly used behavioural defence by ectotherms is to frequently visit warm environments to increase body temperature (i.e., behavioural fever) and thereby mount an immune response to parasites. Using the Australian common garden skink (Lampropholis guichenoti), we investigated the cumulative effect of endo‐ and ectoparasites on host performance. First, we investigated whether endo‐ and ectoparasites were associated with whole‐organism performance in the lizards. Second, we explored whether host individuals responded to their parasite infection through thermoregulatory behaviour. We found no significant relationship between parasitism and body condition. However, the infection with ectoparasitic mites was significantly related to reduced sprint speed, while the nematode infection had no significant relationship with any of our three performance measures (sprint speed, endurance and foraging efficiency). We showed no evidence of behavioural fever and infected lizards did not differ in their body temperature from uninfected lizards. Our findings suggest that short‐lived lizards may simply endure parasitic infections. The study provides an important example of how multiple infections with endo‐ and ectoparasites affect their host. It adds to the growing evidence for a negligible effect of parasites on host whole‐organism performance.

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Section: Discussionmentioning

confidence: 99%

Are whole‐organism performance and thermal preference linked to endo‐ and ectoparasites in a short‐lived lizard?

2023

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“…When possible, it would also benefit researchers to test alternative mechanisms that could underlie the correlated evolution of sexual and thermal traits. For instance, environmental differences in disease risk, predation, or resource availability can favour the evolution of both thermal ecology and sexual characters (Huey & Kingsolver, 2019; Kutch et al, 2014; Landry Yuan et al, 2021; Maan & Seehausen, 2011; Miller & Svensson, 2014; Thomas & Blanford, 2003). The correlated evolution of sexual and thermal traits may therefore instead reflect the repeated adaptation of multiple phenotypic dimensions to local environmental conditions.…”

Section: Studying Evolutionary Interactions Between Thermal Ecology A...mentioning

confidence: 99%

Evolutionary interactions between thermal ecology and sexual selection

2022

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Thermal ecology and mate competition are both pervasive features of ecological adaptation. A surge of recent work has uncovered the diversity of ways in which temperature affects mating interactions and sexual selection. However, the potential for thermal biology and reproductive ecology to evolve together as organisms adapt to their thermal environment has been underappreciated. Here, we develop a series of hypotheses regarding (1) not only how thermal ecology affects mating system dynamics, but also how mating dynamics can generate selection on thermal traits; and (2) how the thermal consequences of mate competition favour the reciprocal co-adaptation of thermal biology and sexual traits. We discuss our hypotheses in the context of both pre-copulatory and post-copulatory processes. We also call for future work integrating experimental and phylogenetic comparative approaches to understand evolutionary feedbacks between thermal ecology and sexual selection.Overall, studying reciprocal feedbacks between thermal ecology and sexual selection may be necessary to understand how organisms have adapted to the environments of the past and could persist in the environments of the future. K E Y W O R D Sclimate change, co-adaptation, mate choice, mate competition, mating systems, reciprocal causation, I N T RODUC T IONOrganisms must balance many demands as they adapt to their environments (Noordwijk & de Jong, 1986;Reznick et al., 2000;Ricklefs & Wikelski, 2002). Competing for mates, for example, often requires that animals use habitats or express traits that hinder survival (Andersson, 1994;Wiens & Tuschhoff, 2020;Zuk & Kolluru, 1998). Biologists have long understood that these survival costs can offset the benefits of mating success and limit the exaggeration of reproductive characters (

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“…Because of these compositional differences, predators and prey have evolved uniquely on these islands (Hasegawa, 1994, 2003). For example, phenotypic traits such as the body colour and hind leg length in Okada's five‐lined skink Plestiodon latiscutatus can be influenced by different selective pressures from island‐specific predators (Brandley et al, 2014; Landry Yuan et al, 2021). The feeding behaviour of the large Japanese field mouse, Apodemus speciosus , has shifted because of island‐specific vegetation after migration to islands (Takechi & Hayashi, 2012).…”

Section: Introductionmentioning

confidence: 99%

Evolutionary history of inshore oceanic island land snails diversified in shell colour

Ito

Chiba

Konuma

2023

Journal of Biogeography

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AimOceanic islands provide an excellent opportunity to study the mode and tempo of phenotypic evolution of terrestrial organisms. Many studies have focused on oceanic islands far from the mainland. Oceanic islands near the mainland may provide distinct perspectives on phenotypic evolution, but a comprehensive understanding is still lacking. To address this gap, this study aimed to reveal when a land snail species inhabiting a volcanic archipelago within 40 km of the mainland diverged and how their shell colours evolved.LocationSouthern Izu Peninsula and five Izu Islands (Oshima, Toshima, Niijima, Shikine and Kozu), Japan.Taxon Euhadra peliomphala simodae. MethodsDouble‐digest restriction site‐associated DNA sequencing (ddRAD‐seq) was conducted using 117 individual snails. Molecular phylogenetic and population genomic analyses were performed, including approximation Bayesian computation (ABC). We then examined whether the island area, elevation, distance from the surrounding landmasses and historical event (bottleneck) explain the shell colour diversity on each island using a phylogenetic generalised linear mixed model (PGLMM).ResultsSnails could be genetically categorised according to the island they inhabited, and on Niijima, their genetic structure was further divided within the island. The divergence times among the extant populations of the snail dated back to 2.1 million years ago (Ma), which is older than that of other animals occurring in this region. Additionally, island elevation positively affected shell colour diversity, and populations with similar shell colour profiles were phylogenetically different.Main conclusionsIsland land snails diversified early in the ecosystem of the Izu Islands. This suggests that proximity to the mainland, immobility and the physiological tolerance of passive dispersal in land snails were the main causes of early diversification. Moreover, our study proposes that environments covarying with elevation would determine shell colour diversity on each island through natural selection.

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Predator presence and recent climatic warming raise body temperatures of island lizards

Cited by 6 publications

References 59 publications

Are whole‐organism performance and thermal preference linked to endo‐ and ectoparasites in a short‐lived lizard?

Are whole‐organism performance and thermal preference linked to endo‐ and ectoparasites in a short‐lived lizard?

Evolutionary interactions between thermal ecology and sexual selection

Evolutionary history of inshore oceanic island land snails diversified in shell colour

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