1
|
Parkin T, Donnellan SC, Parkin B, Shea GM, Rowley JJL. Phylogeography, hybrid zones and contemporary species boundaries in the south-eastern Australian smooth frogs (Anura: Myobatrachidae: Geocrinia). Mol Phylogenet Evol 2023; 189:107934. [PMID: 37769826 DOI: 10.1016/j.ympev.2023.107934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
Paleo-climatic fluctuations have driven episodic changes in species distributions, providing opportunities for populations to diverge in isolation and hybridise following secondary contact. Studies of phylogeographic diversity and patterns of gene flow across hybrid zones can provide insight into contemporary species boundaries and help to inform taxonomic and conservation inferences. Here we explore geographic diversity within the acoustically divergent yet morphologically conserved south-eastern Australian smooth frog complex and assess gene flow across a narrow hybrid zone using mitochondrial nucleotide sequences and nuclear genome-wide single nucleotide polymorphisms. Our analyses reveal the presence of an evolutionarily distinct taxon restricted to the Otway Plains and Ranges, Victoria, which forms a narrow (9-30 km wide), spatiotemporally stable (>50 years) hybrid zone with Geocrinia laevis, which we describe herein as a new species.
Collapse
Affiliation(s)
- Thomas Parkin
- Australian Museum Research Institute, Sydney NSW 2010, Australia.
| | | | - Benjamin Parkin
- Australian Museum Research Institute, Sydney NSW 2010, Australia
| | - Glenn M Shea
- Australian Museum Research Institute, Sydney NSW 2010, Australia; Sydney School of Veterinary Science B01, University of Sydney, NSW 2006, Australia
| | - Jodi J L Rowley
- Australian Museum Research Institute, Sydney NSW 2010, Australia; University of New South Wales, Sydney NSW 2052, Australia
| |
Collapse
|
2
|
Pizarro AK, DeRaad DA, McCormack JE. Temporal stability of the hybrid zone between Calocitta magpie-jays revealed through comparison of museum specimens and iNaturalist photos. Ecol Evol 2023; 13:e9863. [PMID: 36937059 PMCID: PMC10017314 DOI: 10.1002/ece3.9863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/01/2023] [Accepted: 02/10/2023] [Indexed: 03/18/2023] Open
Abstract
Hybrid zones are natural experiments for the study of avian evolution. Hybrid zones can be dynamic, moving as species adjust to new climates and habitats, with unknown implications for species and speciation. There are relatively few studies that have comparable modern and historic sampling to assess change in hybrid zone location and width over time, and those studies have generally found mixed results, with many hybrid zones showing change over time, but others showing stability. The white-throated magpie-jay (Calocitta formosa) and black-throated magpie-jay (Calocitta colliei) occur along the western coast of Mexico and Central America. The two species differ markedly in throat color and tail length, and prior observation suggests a narrow hybrid zone in southern Jalisco where individuals have mixed throat color. This study aims to assess the existence and temporal stability of this putative hybrid zone by comparing throat color between georeferenced historical museum specimens and modern photos from iNaturalist with precise locality information. Our results confirm the existence of a narrow hybrid zone in Jalisco, with modern throat scores gradually increasing from the parental ends of the cline toward the cline center in a sigmoidal curve characteristic of hybrid zones. Our temporal comparison suggests that the hybrid zone has not shifted its position between historical (pre-1973) and modern (post-2005) time periods-a surprising result given the grand scale of habitat change to the western Mexican lowlands during this time. An anomalous pocket of white-throated individuals in the northern range of the black-throated magpie-jay hints at the possibility of prehistorical long-distance introduction. Future genomic data will help disentangle the evolutionary history of these lineages and better characterize how secondary contact is affecting both the DNA and the phenotype of these species.
Collapse
Affiliation(s)
- Alana K. Pizarro
- Moore Laboratory of ZoologyOccidental CollegeLos AngelesCaliforniaUSA
| | - Devon A. DeRaad
- Biodiversity Institute and Department of Ecology & Evolutionary BiologyKansas UniversityKansasLawrenceUSA
| | - John E. McCormack
- Moore Laboratory of ZoologyOccidental CollegeLos AngelesCaliforniaUSA
| |
Collapse
|
3
|
Brannelly LA, Sharma P, Wallace DK. Captive breeding in the endangered alpine tree frog, Litoria verreauxii alpina. PeerJ 2023; 11:e15179. [PMID: 37101793 PMCID: PMC10124539 DOI: 10.7717/peerj.15179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 03/14/2023] [Indexed: 04/28/2023] Open
Abstract
Amphibians are experiencing dramatic worldwide declines and many species are reliant on captive breeding programs to ensure continued survival. However, captive breeding in amphibians is not always successful because many species, especially ones in decline, have particular and specific breeding needs. The endangered alpine tree frog, Litoria verreauxii alpina, has never been bred in captivity before. Due to its dramatic declines across the Australian Alps caused by the global pandemic chytridiomycosis, the species is a potential candidate for captive assurance colonies, which rely on captive breeding. For this study we tested hormone induction using two hormones that have had some success in other amphibian species, to no avail. We then tried outdoor breeding mesocosms during the winter/spring at temperatures similar to their natural breeding season, which was successful. Sixty-five percent of the egg masses laid successfully hatched tadpoles. Females laid more than one clutch over the experiment indicating either a shorter than annual ovulation cycle, or that females are capable of partial ovulation during breeding events. Outdoor breeding mesocosms are a possibility outside the native climate of a species, provided that temperatures overlap with their natural environment. Here, we highlight that troubleshooting is essential before embarking on a captive breeding program of a species that has not been bred before. Hormonal induction of breeding is not always successful; therefore, outdoor mesocosms might be required to achieve healthy tadpoles.
Collapse
Affiliation(s)
- Laura A. Brannelly
- Melbourne Veterinary School, University of Melbourne, Werribee, Victoria, Australia
| | - Preeti Sharma
- Melbourne Veterinary School, University of Melbourne, Werribee, Victoria, Australia
- School of Environment and Science, Griffith University, Southport, Queensland, Australia
| | - Danielle K. Wallace
- Melbourne Veterinary School, University of Melbourne, Werribee, Victoria, Australia
| |
Collapse
|
4
|
Chaplin K, Smith Date K, Bray RD, Miller KA, Lutz ML, Razeng E, Thompson MB, Chapple DG. Intraspecific hybridisation of an invasive lizard on Lord Howe Island. AUST J ZOOL 2022. [DOI: 10.1071/zo21045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Human-mediated dispersal of animals often acts to bring populations that have been separated for substantial periods of evolutionary time (e.g. millions of years) in their native range into contact in their introduced range. Whether these taxa successfully interbreed in the introduced range provides information on the strength of reproductive isolation amongst them. The invasive delicate skink (Lampropholis delicata) has been accidentally introduced to Lord Howe Island from four genetically divergent (>2 million years) regions of the species’ native range in eastern Australia. We used mitochondrial DNA and microsatellite data to investigate whether the individuals from four of the native-range source regions are interbreeding on Lord Howe Island. Our analyses indicate that intraspecific hybridisation among individuals from all four native-range source regions is occurring. Although there is little evidence for hybrids in the northern end of Lord Howe Island (proportion of hybrids: 0–0.02; n = 31), there is a high proportion of hybrids in the central (0.33–0.69; n = 59) and southern regions (0.38–0.75; n = 8) of the island. Given the strong evidence for interbreeding among all four native-range source regions examined, and the relatively minor morphological, life-history and phenotypic variation among them, we suggest that the delicate skink should continue to be treated as a single, widespread, but variable species.
Collapse
|
5
|
Velo-Antón G, Lourenço A, Galán P, Nicieza A, Tarroso P. Landscape resistance constrains hybridization across contact zones in a reproductively and morphologically polymorphic salamander. Sci Rep 2021; 11:9259. [PMID: 33927228 PMCID: PMC8085075 DOI: 10.1038/s41598-021-88349-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/07/2021] [Indexed: 02/02/2023] Open
Abstract
Explicitly accounting for phenotypic differentiation together with environmental heterogeneity is crucial to understand the evolutionary dynamics in hybrid zones. Species showing intra-specific variation in phenotypic traits that meet across environmentally heterogeneous regions constitute excellent natural settings to study the role of phenotypic differentiation and environmental factors in shaping the spatial extent and patterns of admixture in hybrid zones. We studied three environmentally distinct contact zones where morphologically and reproductively divergent subspecies of Salamandra salamandra co-occur: the pueriparous S. s. bernardezi that is mostly parapatric to its three larviparous subspecies neighbours. We used a landscape genetics framework to: (i) characterise the spatial location and extent of each contact zone; (ii) assess patterns of introgression and hybridization between subspecies pairs; and (iii) examine the role of environmental heterogeneity in the evolutionary dynamics of hybrid zones. We found high levels of introgression between parity modes, and between distinct phenotypes, thus demonstrating the evolution to pueriparity alone or morphological differentiation do not lead to reproductive isolation between these highly divergent S. salamandra morphotypes. However, we detected substantial variation in patterns of hybridization across contact zones, being lower in the contact zone located on a topographically complex area. We highlight the importance of accounting for spatial environmental heterogeneity when studying evolutionary dynamics of hybrid zones.
Collapse
Affiliation(s)
- Guillermo Velo-Antón
- grid.5808.50000 0001 1503 7226CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Instituto de Ciências Agrárias de Vairão. R. Padre Armando Quintas, 4485-661 Vairão, Portugal ,grid.6312.60000 0001 2097 6738Universidade de Vigo, Grupo de Ecoloxía Animal, Departamento de Ecoloxía e Bioloxía Animal, Torre Cacti (Lab 97), 36310 Vigo, Spain
| | - André Lourenço
- grid.5808.50000 0001 1503 7226CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Instituto de Ciências Agrárias de Vairão. R. Padre Armando Quintas, 4485-661 Vairão, Portugal ,grid.5808.50000 0001 1503 7226Departamento de Biologia da Faculdade de Ciências, Universidade do Porto. Rua Campo Alegre, 4169-007 Porto, Portugal
| | - Pedro Galán
- grid.8073.c0000 0001 2176 8535Grupo de Investigación en Bioloxía Evolutiva (GIBE), Departamento de Bioloxía, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira, s/n, 15071 A Coruña, Spain
| | - Alfredo Nicieza
- grid.10863.3c0000 0001 2164 6351Departamento de Biologıa de Organismos y Sistemas, Universidad de Oviedo, Oviedo, Spain ,grid.10863.3c0000 0001 2164 6351Unidad Mixta de Investigacion en Biodiversidad (UMIB), CSIC-Universidad de Oviedo-Principado de Asturias, Mieres, Spain
| | - Pedro Tarroso
- grid.5808.50000 0001 1503 7226CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Instituto de Ciências Agrárias de Vairão. R. Padre Armando Quintas, 4485-661 Vairão, Portugal
| |
Collapse
|
6
|
McEntee JP, Burleigh JG, Singhal S. Dispersal Predicts Hybrid Zone Widths across Animal Diversity: Implications for Species Borders under Incomplete Reproductive Isolation. Am Nat 2020; 196:9-28. [PMID: 32552108 DOI: 10.1086/709109] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hybrid zones occur as range boundaries for many animal taxa. One model for how hybrid zones form and stabilize is the tension zone model, a version of which predicts that hybrid zone widths are determined by a balance between random dispersal into hybrid zones and selection against hybrids. Here, we examine whether random dispersal and proxies for selection against hybrids (genetic distances between hybridizing pairs) can explain variation in hybrid zone widths across 131 hybridizing pairs of animals. We show that these factors alone can explain ∼40% of the variation in zone width among animal hybrid zones, with dispersal explaining far more of the variation than genetic distances. Patterns within clades were idiosyncratic. Genetic distances predicted hybrid zone widths particularly well for reptiles, while this relationship was opposite tension zone predictions in birds. Last, the data suggest that dispersal and molecular divergence set lower bounds on hybrid zone widths in animals, indicating that there are geographic restrictions on hybrid zone formation. Overall, our analyses reinforce the fundamental importance of dispersal in hybrid zone formation and more generally in the ecology of range boundaries.
Collapse
|
7
|
Yu S, Zhang Y, Li Q, Zhang Z, Zhao G, Xu J. CLDN6 promotes tumor progression through the YAP1-snail1 axis in gastric cancer. Cell Death Dis 2019; 10:949. [PMID: 31827075 PMCID: PMC6906326 DOI: 10.1038/s41419-019-2168-y] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 11/19/2019] [Accepted: 11/20/2019] [Indexed: 01/15/2023]
Abstract
Claudin6 (CLDN6), a member of the tight junction family, is a molecule involved in intercellular adhesion, acting as a physical barrier that prevents solutes and water from freely passing through the extracellular space. CLDN6 has important biological functions, and its abnormal expression is associated with Hepatitis C infection. However, there is limited research regarding its role in gastric cancer. In this study, we found that the expression of CLDN6 mRNA and protein was upregulated in gastric cancer cell lines and tissues, which indicated poor prognosis. Both in vitro and in vivo experiments showed that abnormal CLDN6 expression was associated with enhanced proliferation and invasion abilities of gastric cancer. CLDN6 reduced the phosphorylation of LATS1/2 and YAP1 by interacting with LATS1/2 in the Hippo signaling pathway. Thus, CLDN6 affected the entry of YAP1 into the nucleus, causing changes in downstream target genes. Moreover, YAP1 interacted with snail1 to affect the process of EMT and enhanced the invasive ability of GC cells. Collectively, CLDN6 promoted the proliferation and invasive ability of gastric cancer by affecting YAP1 and YAP1-snail1 axis.
Collapse
Affiliation(s)
- Site Yu
- Department of General Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Shanghai, 200127, P.R. China
| | - Yeqian Zhang
- Department of General Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Shanghai, 200127, P.R. China
| | - Qing Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, P.R. China
| | - Zizhen Zhang
- Department of General Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Shanghai, 200127, P.R. China
| | - Gang Zhao
- Department of General Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Shanghai, 200127, P.R. China.
| | - Jia Xu
- Department of General Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Shanghai, 200127, P.R. China.
| |
Collapse
|
8
|
Morales-Rozo A, Tenorio EA, Carling MD, Cadena CD. Origin and cross-century dynamics of an avian hybrid zone. BMC Evol Biol 2017; 17:257. [PMID: 29246108 PMCID: PMC5732383 DOI: 10.1186/s12862-017-1096-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 11/27/2017] [Indexed: 01/07/2023] Open
Abstract
Background Characterizations of the dynamics of hybrid zones in space and time can give insights about traits and processes important in population divergence and speciation. We characterized a hybrid zone between tanagers in the genus Ramphocelus (Aves, Thraupidae) located in southwestern Colombia. We evaluated whether this hybrid zone originated as a result of secondary contact or of primary differentiation, and described its dynamics across time using spatial analyses of molecular, morphological, and coloration data in combination with paleodistribution modeling. Results Models of potential historical distributions based on climatic data and genetic signatures of demographic expansion suggested that the hybrid zone likely originated following secondary contact between populations that expanded their ranges out of isolated areas in the Quaternary. Concordant patterns of variation in phenotypic characters across the hybrid zone and its narrow extent are suggestive of a tension zone, maintained by a balance between dispersal and selection against hybrids. Estimates of phenotypic cline parameters obtained using specimens collected over nearly a century revealed that, in recent decades, the zone appears to have moved to the east and to higher elevations, and may have become narrower. Genetic variation was not clearly structured along the hybrid zone, but comparisons between historical and contemporary specimens suggested that temporal changes in its genetic makeup may also have occurred. Conclusions Our data suggest that the hybrid zone likey resulted from secondary contact between populations. The observed changes in the hybrid zone may be a result of sexual selection, asymmetric gene flow, or environmental change. Electronic supplementary material The online version of this article (doi: 10.1186/s12862-017-1096-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Andrea Morales-Rozo
- Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias Biológicas, Universidad de Los Andes, Bogotá, Colombia.,Programa de Biología y Museo de Historia Natural, Universidad de los Llanos, Sede Barcelona, Villavicencio, Colombia
| | - Elkin A Tenorio
- Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias Biológicas, Universidad de Los Andes, Bogotá, Colombia.,Calima: Fundación para la Investigación de la Biodiversidad y Conservación en el Trópico, Cali, Colombia
| | - Matthew D Carling
- Cornell Laboratory of Ornithology, Cornell University, Ithaca, NY, USA.,Department of Zoology and Physiology, University of Wyoming, Laramie, WY, USA
| | - Carlos Daniel Cadena
- Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias Biológicas, Universidad de Los Andes, Bogotá, Colombia.
| |
Collapse
|
9
|
Leaché AD, Grummer JA, Harris RB, Breckheimer IK. Evidence for concerted movement of nuclear and mitochondrial clines in a lizard hybrid zone. Mol Ecol 2017; 26:2306-2316. [DOI: 10.1111/mec.14033] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 12/30/2016] [Accepted: 01/04/2017] [Indexed: 01/20/2023]
Affiliation(s)
- Adam D. Leaché
- Department of Biology University of Washington Box 351800 Seattle WA 98195‐1800 USA
- Burke Museum of Natural History and Culture University of Washington Box 353010 Seattle WA 98195‐3010 USA
| | - Jared A. Grummer
- Department of Biology University of Washington Box 351800 Seattle WA 98195‐1800 USA
- Burke Museum of Natural History and Culture University of Washington Box 353010 Seattle WA 98195‐3010 USA
| | - Rebecca B. Harris
- Department of Biology University of Washington Box 351800 Seattle WA 98195‐1800 USA
- Burke Museum of Natural History and Culture University of Washington Box 353010 Seattle WA 98195‐3010 USA
| | - Ian K. Breckheimer
- Department of Biology University of Washington Box 351800 Seattle WA 98195‐1800 USA
| |
Collapse
|
10
|
Temporal shifts in the saltmarsh–Nelson’s sparrow hybrid zone revealed by replicated demographic and genetic surveys. CONSERV GENET 2017. [DOI: 10.1007/s10592-016-0920-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
11
|
Visser M, de Leeuw M, Zuiderwijk A, Arntzen JW. Stabilization of a salamander moving hybrid zone. Ecol Evol 2016; 7:689-696. [PMID: 28116063 PMCID: PMC5243777 DOI: 10.1002/ece3.2676] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 11/14/2016] [Indexed: 01/05/2023] Open
Abstract
When related species meet upon postglacial range expansion, hybrid zones are frequently formed. Theory predicts that such zones may move over the landscape until equilibrium conditions are reached. One hybrid zone observed to be moving in historical times (1950–1979) is that of the pond‐breeding salamanders Triturus cristatus and Triturus marmoratus in western France. We identified the ecological correlates of the species hybrid zone as elevation, forestation, and hedgerows favoring the more terrestrial T. marmoratus and pond density favoring the more aquatic T. cristatus. The past movement of the zone of ca. 30 km over three decades has probably been driven by the drastic postwar reduction of the “bocage” hedgerow landscape, favoring T. cristatus over T. marmoratus. No further hybrid zone movement was observed from 1979 to the present. To explain the changing dynamics of the hybrid zone, we propose that it stalled, either because an equilibrium was found at an altitude of ca. 140 m a.s.l. or due to pond loss and decreased population densities. While we cannot rule out the former explanation, we found support for the latter. Under agricultural intensification, ponds in the study area are lost at an unprecedented rate of 5.5% per year, so that remaining Triturus populations are increasingly isolated, hampering dispersal and further hybrid zone movement.
Collapse
Affiliation(s)
| | | | | | - Jan W Arntzen
- Naturalis Biodiversity Center Leiden The Netherlands
| |
Collapse
|
12
|
Potvin DA, Parris KM, Smith Date KL, Keely CC, Bray RD, Hale J, Hunjan S, Austin JJ, Melville J. Genetic erosion and escalating extinction risk in frogs with increasing wildfire frequency. J Appl Ecol 2016. [DOI: 10.1111/1365-2664.12809] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Kirsten M. Parris
- School of Ecosystem and Forest Sciences The University of Melbourne Parkville Vic. 3010 Australia
| | | | - Claire C. Keely
- Sciences Department Museum Victoria Melbourne Vic. 3010 Australia
- School of Ecosystem and Forest Sciences The University of Melbourne Parkville Vic. 3010 Australia
| | - Rebecca D. Bray
- Sciences Department Museum Victoria Melbourne Vic. 3010 Australia
- School of Biological Sciences Monash University Clayton Vic. 3800 Australia
| | - Joshua Hale
- Sciences Department Museum Victoria Melbourne Vic. 3010 Australia
| | - Sumitha Hunjan
- Sciences Department Museum Victoria Melbourne Vic. 3010 Australia
| | - Jeremy J. Austin
- Sciences Department Museum Victoria Melbourne Vic. 3010 Australia
- Australian Centre for Ancient DNA School of Earth and Environmental Sciences & Environment Institute University of Adelaide Adelaide SA 5005 Australia
| | - Jane Melville
- Sciences Department Museum Victoria Melbourne Vic. 3010 Australia
| |
Collapse
|
13
|
Curry CM, Patten MA. Shadow of a doubt: premating and postmating isolating barriers in a temporally complex songbird (Passeriformes: Paridae) hybrid zone. Behav Ecol Sociobiol 2016. [DOI: 10.1007/s00265-016-2126-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Dupuis JR, Sperling FAH. Hybrid dynamics in a species group of swallowtail butterflies. J Evol Biol 2016; 29:1932-1951. [DOI: 10.1111/jeb.12931] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 04/22/2016] [Accepted: 06/27/2016] [Indexed: 01/15/2023]
Affiliation(s)
- J. R. Dupuis
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
| | - F. A. H. Sperling
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
| |
Collapse
|
15
|
Engebretsen KN, Barrow LN, Rittmeyer EN, Brown JM, Moriarty Lemmon E. Quantifying the spatiotemporal dynamics in a chorus frog (Pseudacris) hybrid zone over 30 years. Ecol Evol 2016; 6:5013-31. [PMID: 27547330 PMCID: PMC4979724 DOI: 10.1002/ece3.2232] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 05/11/2016] [Accepted: 05/16/2016] [Indexed: 12/14/2022] Open
Abstract
Although theory suggests that hybrid zones can move or change structure over time, studies supported by direct empirical evidence for these changes are relatively limited. We present a spatiotemporal genetic study of a hybrid zone between Pseudacris nigrita and P. fouquettei across the Pearl River between Louisiana and Mississippi. This hybrid zone was initially characterized in 1980 as a narrow and steep “tension zone,” in which hybrid populations were inferior to parentals and were maintained through a balance between selection and dispersal. We reanalyzed historical tissue samples and compared them to samples of recently collected individuals using microsatellites. Clinal analyses indicate that the cline has not shifted in roughly 30 years but has widened significantly. Anthropogenic and natural changes may have affected selective pressure or dispersal, and our results suggest that the zone may no longer best be described as a tension zone. To the best of our knowledge, this study provides the first evidence of significant widening of a hybrid cline but stasis of its center. Continued empirical study of dynamic hybrid zones will provide insight into the forces shaping their structure and the evolutionary potential they possess for the elimination or generation of species.
Collapse
Affiliation(s)
- Kristin N Engebretsen
- Department of Biological Science Florida State University 319 Stadium Drive Tallahassee Florida 32306
| | - Lisa N Barrow
- Department of Biological Science Florida State University 319 Stadium Drive Tallahassee Florida 32306
| | - Eric N Rittmeyer
- Department of Biological Sciences Museum of Natural Science Louisiana State University 202 Life Sciences Building Baton Rouge Louisiana 70803; Research School of Biology The Australian National University Gould Building 116 Canberra ACT 2601 Australia
| | - Jeremy M Brown
- Department of Biological Sciences Museum of Natural Science Louisiana State University 202 Life Sciences Building Baton Rouge Louisiana 70803
| | - Emily Moriarty Lemmon
- Department of Biological Science Florida State University 319 Stadium Drive Tallahassee Florida 32306
| |
Collapse
|
16
|
Epps CW, Keyghobadi N. Landscape genetics in a changing world: disentangling historical and contemporary influences and inferring change. Mol Ecol 2015; 24:6021-40. [DOI: 10.1111/mec.13454] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/29/2015] [Accepted: 11/02/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Clinton W. Epps
- Oregon State University; Nash Hall Room 104 Corvallis OR 97331 USA
| | - Nusha Keyghobadi
- Department of Biology; Western University; London ON N6A 5B7 Canada
| |
Collapse
|
17
|
McQuillan MA, Rice AM. Differential effects of climate and species interactions on range limits at a hybrid zone: potential direct and indirect impacts of climate change. Ecol Evol 2015; 5:5120-37. [PMID: 26640687 PMCID: PMC4662315 DOI: 10.1002/ece3.1774] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 09/08/2015] [Accepted: 09/17/2015] [Indexed: 01/20/2023] Open
Abstract
The relative contributions of climate versus interspecific interactions in shaping species distributions have important implications for closely related species at contact zones. When hybridization occurs within a contact zone, these factors regulate hybrid zone location and movement. While a hybrid zone's position may depend on both climate and interactions between the hybridizing species, little is known about how these factors interact to affect hybrid zone dynamics. Here, we utilize SDM (species distribution modeling) both to characterize the factors affecting the current location of a moving North American avian hybrid zone and to predict potential direct and indirect effects of climate change on future distributions. We focus on two passerine species that hybridize where their ranges meet, the Black‐capped (Poecile atricapillus) and Carolina (P. carolinensis) chickadee. Our contemporary climate models predict the occurrence of climatically suitable habitat extending beyond the hybrid zone for P. atricapillus only, suggesting that interspecific interactions primarily regulate this range boundary in P. atricapillus, while climatic factors regulate P. carolinensis. Year 2050 climate models predict a drastic northward shift in suitable habitat for P. carolinensis. Because of the greater importance of interspecific interactions for regulating the southern range limit of P. atricapillus, these climate‐mediated shifts in the distribution of P. carolinensis may indirectly lead to a range retraction in P. atricapillus. Together, our results highlight the ways climate change can both directly and indirectly affect species distributions and hybrid zone location. In addition, our study lends support to the longstanding hypothesis that abiotic factors regulate species' poleward range limits, while biotic factors shape equatorial range limits.
Collapse
Affiliation(s)
- Michael A McQuillan
- Department of Biological Sciences Lehigh University 111 Research Drive Bethlehem Pennsylvania 18015
| | - Amber M Rice
- Department of Biological Sciences Lehigh University 111 Research Drive Bethlehem Pennsylvania 18015
| |
Collapse
|
18
|
Thirty Years of Hybridization between Toads along the Agua Fria River in Arizona: I. Evidence from Morphology and mtDNA. J HERPETOL 2015. [DOI: 10.1670/14-011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
19
|
Taylor SA, Curry RL, White TA, Ferretti V, Lovette I. Spatiotemporally consistent genomic signatures of reproductive isolation in a moving hybrid zone. Evolution 2014; 68:3066-81. [DOI: 10.1111/evo.12510] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 07/28/2014] [Indexed: 01/19/2023]
Affiliation(s)
- Scott A. Taylor
- Fuller Evolutionary Biology Program; Cornell Lab of Ornithology; 159 Sapsucker Woods Road Ithaca New York 14850
- Department of Ecology and Evolutionary Biology; Cornell University; Ithaca New York 14850
| | - Robert L. Curry
- Department of Biology; Villanova University; 800 Lancaster Avenue Villanova Pennsylvania 19085
| | - Thomas A. White
- Department of Ecology and Evolutionary Biology; Cornell University; Ithaca New York 14850
- Ecology Research Group; Department of Geographical and Life Sciences; Canterbury Christ Church University; North Holmes Campus; Canterbury CT1 1QU United Kingdom
| | - Valentina Ferretti
- Fuller Evolutionary Biology Program; Cornell Lab of Ornithology; 159 Sapsucker Woods Road Ithaca New York 14850
- Department of Biology; Villanova University; 800 Lancaster Avenue Villanova Pennsylvania 19085
| | - Irby Lovette
- Fuller Evolutionary Biology Program; Cornell Lab of Ornithology; 159 Sapsucker Woods Road Ithaca New York 14850
- Department of Ecology and Evolutionary Biology; Cornell University; Ithaca New York 14850
| |
Collapse
|
20
|
Streicher JW, Devitt TJ, Goldberg CS, Malone JH, Blackmon H, Fujita MK. Diversification and asymmetrical gene flow across time and space: lineage sorting and hybridization in polytypic barking frogs. Mol Ecol 2014; 23:3273-91. [DOI: 10.1111/mec.12814] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 05/20/2014] [Accepted: 05/23/2014] [Indexed: 12/20/2022]
Affiliation(s)
- Jeffrey W. Streicher
- Department of Biology; The University of Texas at Arlington; Arlington TX 76010 USA
| | - Thomas J. Devitt
- Department of Integrative Biology; The University of Texas at Austin; Austin TX 78712 USA
| | - Caren S. Goldberg
- Fish and Wildlife Sciences; University of Idaho; Moscow ID 83844 USA
| | - John H. Malone
- Department of Molecular and Cell Biology; University of Connecticut; Storrs CT 06269 USA
| | - Heath Blackmon
- Department of Biology; The University of Texas at Arlington; Arlington TX 76010 USA
| | - Matthew K. Fujita
- Department of Biology; The University of Texas at Arlington; Arlington TX 76010 USA
| |
Collapse
|
21
|
Curry CM, Patten MA. Current and Historical Extent of Phenotypic Variation in the Tufted and Black-crested Titmouse (Paridae) Hybrid Zone in the Southern Great Plains. AMERICAN MIDLAND NATURALIST 2014. [DOI: 10.1674/0003-0031-171.2.271] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
22
|
Affiliation(s)
- K. Petren
- Department of Biological Sciences; University of Cincinnati; Cincinnati Ohio 45221
| |
Collapse
|