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De-Lima AKS, de Oliveira CH, Pic-Taylor A, Klaczko J. Effects of incubation temperature on development, morphology, and thermal physiology of the emerging Neotropical lizard model organism Tropidurus torquatus. Sci Rep 2022; 12:17153. [PMID: 36229624 PMCID: PMC9562357 DOI: 10.1038/s41598-022-21450-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 09/27/2022] [Indexed: 01/04/2023] Open
Abstract
Incubation temperature is among the main phenotypic trait variation drivers studied since the developmental trajectory of oviparous animals is directly affected by environmental conditions. In the last decades, global warming predictions have aroused interest in understanding its impacts on biodiversity. It is predicted that the effects of direct warming will be exacerbated by other anthropogenic factors, such as microclimatic edge effects. Although the Brazilian Cerrado biome is one of the most affected by these issues, little is known about the aforementioned effects on its biodiversity. Therefore, the aim of our study is to investigate the influence of incubation temperature on developmental parameters, morphology and thermal physiology traits of the collared lizard (Tropidurus torquatus). Furthermore, we discuss our findings regarding lizard developmental biology and the climate change paradigm. Therefore, we incubated T. torquatus eggs under five temperature regimes ranging from artificial nest temperature (28.7 °C) to 35.0 °C. We found that elevated incubation temperatures affect several investigated traits: egg mass gain is positively affected, without any influence in newborn mass; incubation period is broadly reduced with temperature increase; survival rate is negatively affected by temperature, constant 35.0 °C regime is confirmed as a lethal incubation temperature, and the sex ratio is affected at 30.0 °C, with a prevailing outbreak of females. Increased incubation temperature also affects body and head size but has no effect on limb size. Newborn thermoregulation and the critical thermal maximum (CTmax) are not affected by incubation temperature. On the other hand, basal body temperature (Tbb) and the critical thermal minimum (CTmin) were positively affected. Thermal physiology was also affected by age, with newborns differing from adults for all analyzed thermal traits. Our findings indicate that future modifications in incubation temperature regimes at nesting sites caused by warming may affect several features of the development, morphology, and thermal physiology of newborns of this species. Laboratory experiments have pointed to possible drastic effects of warming on lizard survival rates, also affecting aspects of its natural history and population distribution. Moreover, in addition to being more vulnerable than adults in aspects such as predation and feeding, T. torquatus newborns are also more vulnerable regarding thermal physiological traits.
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Affiliation(s)
- Anderson Kennedy Soares De-Lima
- grid.7632.00000 0001 2238 5157Laboratory of Comparative Vertebrate Anatomy, Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF 70910-900 Brazil ,grid.7632.00000 0001 2238 5157Graduate Program in Zoology, Institute of Biological Sciences, University of Brasília, Brasília, DF 70910-900 Brazil
| | - Carlos Henke de Oliveira
- grid.7632.00000 0001 2238 5157Laboratory of Applied Ecology, Department of Ecology, Institute of Biological Sciences, University of Brasília, Brasília, DF 70910-900 Brazil
| | - Aline Pic-Taylor
- grid.7632.00000 0001 2238 5157Laboratory of Embryology and Developmental Biology, Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, Brasília, DF 70910-900 Brazil
| | - Julia Klaczko
- grid.7632.00000 0001 2238 5157Laboratory of Comparative Vertebrate Anatomy, Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF 70910-900 Brazil ,grid.35937.3b0000 0001 2270 9879Department of Life Sciences, Natural History Museum, London, SW7 5BD UK
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Wang J, Cheng ZY, Dong YW. Demographic, physiological, and genetic factors linked to the poleward range expansion of the snail Nerita yoldii along the shoreline of China. Mol Ecol 2022; 31:4510-4526. [PMID: 35822322 DOI: 10.1111/mec.16610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 05/23/2022] [Accepted: 07/04/2022] [Indexed: 12/01/2022]
Abstract
Species range shift is one of the most significant consequences of climate change in the Anthropocene. A comprehensive study, including demographic, physiological, and genetic factors linked to poleward range expansion, is crucial for understanding how the expanding population occupies the new habitat. In the present study, we investigated the demographic, physiological, and genetic features of the intertidal gastropod Nerita yoldii, which has extended its northern limit by ~200 km over the former biogeographic break of the Yangtze River Estuary during recent decades. The neutral SNPs data showed that the new marginal populations formed a distinct cluster established by a few founders. Demographic modelling analysis revealed that the new marginal populations experienced a strong genetic bottleneck followed by recent demographic expansion. Successful expansion that overcame the founder effect might be attributed to its high capacity of rapid population growth and multiple introductions. According to the non-neutral SNPs under diversifying selection, there were high levels of heterozygosity in the new marginal populations, which might be beneficial for adapting to the novel thermal conditions. The common garden experiment showed that the new marginal populations have evolved divergent transcriptomic and physiological responses to heat stress, allowing them to occupy and survive in the novel environment. Lower transcriptional plasticity was observed in the new marginal populations. These results suggest a new biogeographic pattern of N. yoldii has formed with the occurrence of demographic, physiologic, and genetic changes, and emphasize the roles of adaptation of marginal populations during range expansion.
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Affiliation(s)
- Jie Wang
- The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao, PR China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, PR China
| | - Zhi-Yuan Cheng
- State Key Laboratory of Marine Environmental Science, College of Marine and Earth Sciences, Xiamen University, Xiamen, PR China
| | - Yun-Wei Dong
- The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao, PR China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology, Qingdao, PR China
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Qiu T, Liu Z, Yang Y, Liu B. Epigenetic variation associated with responses to different habitats in the context of genetic divergence in Phragmites australis. Ecol Evol 2021; 11:11874-11889. [PMID: 34522347 PMCID: PMC8427615 DOI: 10.1002/ece3.7954] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/03/2021] [Accepted: 07/06/2021] [Indexed: 01/13/2023] Open
Abstract
The mechanisms underlying heritable phenotypic divergence associated with adaptation in response to environmental stresses may involve both genetic and epigenetic variations. Several prior studies have revealed even higher levels of epigenetic variation than genetic variation. However, few population-level studies have explored the effects of epigenetic variation on species with high levels of genetic diversity distributed across different habitats. Using AFLP and methylation-sensitive AFLP markers, we tested the hypothesis that epigenetic variation may contribute to differences in plants occupying different habitats when genetic variation alone cannot fully explain adaptation. As a cosmopolitan invasive species, Phragmites australis (common reed) together with high genetic diversity and remarkable adaptability has been suggested as a model for responses to global change and indicators of environmental fluctuations. We found high levels of genetic and epigenetic diversity and significant genetic/epigenetic structure within each of 12 studied populations sampled from four natural habitats of P. australis. Possible adaptive epigenetic variation was suggested by significant correlations between DNA methylation-based epigenetic differentiation and adaptive genetic divergence in populations across the habitats. Meanwhile, various AMOVAs indicated that some epigenetic differences may respond to various local habitats. A partial Mantel test was used to tease out the correlations between genetic/epigenetic variation and habitat after controlling for the correlation between genetic and epigenetic variations. We found that epigenetic diversity was affected mostly by soil nutrient availability, suggesting that at least some epigenetic differentiation occurred independently of genetic variation. We also found stronger correlations between epigenetic variation and phenotypic traits than between genetic variation and such traits. Overall, our findings indicate that genetically based differentiation correlates with heterogeneous habitats, while epigenetic variation plays an important role in ecological differentiation in natural populations of P. australis. In addition, our results suggest that when assessing global change responses of plant species, intraspecific variation needs to be considered.
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Affiliation(s)
- Tian Qiu
- School of Life SciencesChangchun Normal UniversityChangchunChina
- Institute of Grassland ScienceKey Laboratory of Vegetation EcologyMinistry of EducationNortheast Normal UniversityChangchunChina
- Key Laboratory of Molecular EpigeneticsMinistry of EducationNortheast Normal UniversityChangchunChina
| | - Zhiyuan Liu
- College of Computer Science and TechnologyChangchun UniversityChangchunChina
| | - Yunfei Yang
- Institute of Grassland ScienceKey Laboratory of Vegetation EcologyMinistry of EducationNortheast Normal UniversityChangchunChina
| | - Bao Liu
- Key Laboratory of Molecular EpigeneticsMinistry of EducationNortheast Normal UniversityChangchunChina
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Mulero S, Rey O, Arancibia N, Mas-Coma S, Boissier J. Persistent establishment of a tropical disease in Europe: the preadaptation of schistosomes to overwinter. Parasit Vectors 2019; 12:379. [PMID: 31358021 PMCID: PMC6664521 DOI: 10.1186/s13071-019-3635-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 07/23/2019] [Indexed: 12/12/2022] Open
Abstract
Background Global changes promote the spread of infectious diseases worldwide. In this context, tropical urogenital schistosomiasis is now permanently established in Corsica since its first emergence in 2013. The local persistence of the tropical pathogens (schistosomes) responsible for urogenital schistosomiasis at such latitudes might be explained by (i) the presence of its intermediate host, the snail Bulinus truncatus, (ii) the recurrent local reseeding of schistosomes by their vertebrate hosts (either human or animal) every summer, and/or (iii) the maintenance and survival of schistosomes within their snail hosts over winter. Methods In this study we conducted an ecological experiment to assess the ability of temperate and tropical schistosome strains to survive in classical winter temperatures in Corsican rivers when infecting temperate (local) snail strains. We also quantified the ability of the schistosomes to complete their life-cycle post-overwintering when returned to classical summer water temperatures. Results Our results show that Mediterranean molluscs are locally adapted to winter conditions compared to tropical molluscs. Moreover, temperate and tropical schistosome strains equally survived the cold and produced viable offspring when returned to optimal temperatures. These results indicate that schistosomes can overwinter under temperate climates when infecting locally adapted snails and might partly explain the establishment and maintenance of schistosomes in Corsica from year to year. Conclusions The observed broader thermal range of schistosomes compared to that of their snail hosts was unexpected and clearly indicates that the spread and establishment of schistosomiasis in temperate countries relies primarily on the presence of the locally adapted snail host lineages, currently known to be present in France, Italy, Portugal, Spain and Greece.
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Affiliation(s)
- Stephen Mulero
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860, Perpignan, France
| | - Olivier Rey
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860, Perpignan, France
| | - Nathalie Arancibia
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860, Perpignan, France
| | - Santiago Mas-Coma
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicent Andrés Estellés s/n, Burjassot, 46100, Valencia, Spain
| | - Jérôme Boissier
- IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, 66860, Perpignan, France.
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Rieseberg L, Geraldes A, Belkin SE, Chambers KE, Kane N. Editorial 2019. Mol Ecol 2019; 28:1-28. [DOI: 10.1111/mec.14976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Card DC, Perry BW, Adams RH, Schield DR, Young AS, Andrew AL, Jezkova T, Pasquesi GI, Hales NR, Walsh MR, Rochford MR, Mazzotti FJ, Hart KM, Hunter ME, Castoe TA. Novel ecological and climatic conditions drive rapid adaptation in invasive Florida Burmese pythons. Mol Ecol 2018; 27:4744-4757. [DOI: 10.1111/mec.14885] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 08/24/2018] [Accepted: 09/14/2018] [Indexed: 12/30/2022]
Affiliation(s)
- Daren C. Card
- Department of Biology The University of Texas at Arlington Arlington Texas
| | - Blair W. Perry
- Department of Biology The University of Texas at Arlington Arlington Texas
| | - Richard H. Adams
- Department of Biology The University of Texas at Arlington Arlington Texas
| | - Drew R. Schield
- Department of Biology The University of Texas at Arlington Arlington Texas
| | - Acacia S. Young
- Department of Biology The University of Texas at Arlington Arlington Texas
| | - Audra L. Andrew
- Department of Biology The University of Texas at Arlington Arlington Texas
| | | | | | - Nicole R. Hales
- Department of Biology The University of Texas at Arlington Arlington Texas
| | - Matthew R. Walsh
- Department of Biology The University of Texas at Arlington Arlington Texas
| | - Michael R. Rochford
- Fort Lauderdale Research & Education Center University of Florida Fort Lauderdale Florida
| | - Frank J. Mazzotti
- Fort Lauderdale Research & Education Center University of Florida Fort Lauderdale Florida
| | - Kristen M. Hart
- U. S. Geological Survey Wetland and Aquatic Research Center Davie Florida
| | - Margaret E. Hunter
- U. S. Geological Survey Wetland and Aquatic Research Center Gainesville Florida
| | - Todd A. Castoe
- Department of Biology The University of Texas at Arlington Arlington Texas
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