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Noguerales V, Arjona Y, García-Olivares V, Machado A, López H, Patiño J, Emerson BC. Genetic legacies of mega-landslides: Cycles of isolation and contact across flank collapses in an oceanic island. Mol Ecol 2024; 33:e17341. [PMID: 38576177 DOI: 10.1111/mec.17341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 04/06/2024]
Abstract
Catastrophic flank collapses are recognized as important drivers of insular biodiversity dynamics, through the disruption of species ranges and subsequent allopatric divergence. However, little empirical data supports this conjecture, with their evolutionary consequences remaining poorly understood. Using genome-wide data within a population genomics and phylogenomics framework, we evaluate how mega-landslides have impacted evolutionary and demographic history within a species complex of weevils (Curculionidae) within the Canary Island of Tenerife. We reveal a complex genomic landscape, within which individuals of single ancestry were sampled in areas characterized by long-term geological stability, relative to the timing of flank collapses. In contrast, individuals of admixed ancestry were almost exclusively sampled within the boundaries of flank collapses. Estimated divergence times among ancestral populations aligned with the timings of mega-landslide events. Our results provide first evidence for a cyclical dynamic of range fragmentation and secondary contact across flank collapse landscapes, with support for a model where this dynamic is mediated by Quaternary climate oscillations. The context within which we reveal climate and topography to interact cyclically through time to shape the geographic structure of genetic variation, together with related recent work, highlights the importance of topoclimatic phenomena as an agent of diversification within insular invertebrates.
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Affiliation(s)
- Víctor Noguerales
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), San Cristóbal de La Laguna, Canary Islands, Spain
| | - Yurena Arjona
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), San Cristóbal de La Laguna, Canary Islands, Spain
- Department of Botany, Ecology and Plant Physiology, University of La Laguna, San Cristóbal de La Laguna, Canary Islands, Spain
| | - Víctor García-Olivares
- Plataforma Genómica de Alto Rendimiento para el Estudio de la Biodiversidad, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), San Cristóbal de La Laguna, Canary Islands, Spain
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Canary Islands, Spain
| | - Antonio Machado
- C/Chopin 1, San Cristóbal de La Laguna, Canary Islands, Spain
| | - Heriberto López
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), San Cristóbal de La Laguna, Canary Islands, Spain
| | - Jairo Patiño
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), San Cristóbal de La Laguna, Canary Islands, Spain
- Department of Botany, Ecology and Plant Physiology, University of La Laguna, San Cristóbal de La Laguna, Canary Islands, Spain
| | - Brent C Emerson
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), San Cristóbal de La Laguna, Canary Islands, Spain
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2
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Brown RP, Sun H, Jin Y, Meloro C. Habitat-associated Genomic Variation in a Wall Lizard from an Oceanic Island. Genome Biol Evol 2023; 15:evad193. [PMID: 37862140 PMCID: PMC10637050 DOI: 10.1093/gbe/evad193] [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: 06/08/2023] [Revised: 08/30/2023] [Accepted: 10/02/2023] [Indexed: 10/22/2023] Open
Abstract
The lizard Teira dugesii exhibits morphological divergence between beach and inland habitats in the face of gene flow, within the volcanic island of Madeira, Portugal. Here, we analyzed genomic data obtained by genotyping-by-sequencing, which provided 16,378 single nucleotide polymorphisms (SNPs) from 94 individuals sampled from 15 sites across Madeira. Ancient within-island divergence in allopatry appears to have mediated divergence in similar species within other Atlantic islands, but this hypothesis was not supported for T. dugesii. Across all samples, a total of 168 SNPs were classified as statistical outliers using pcadapt and OutFLANK. Redundancy analysis (RDA) revealed that 17 of these outliers were associated with beach/inland habitats. The SNPs were located within 16 sequence tags and 15 of these were homologous with sequences in a 31 Mb region on chromosome 3 of a reference wall lizard genome (the remaining tag could not be associated with any chromosome). We further investigated outliers through contingency analyses of allele frequencies at each of four pairs of adjacent beach-inland sites. The majority of the outliers detected by the RDA were confirmed at two pairs of these matched sites. These analyses also suggested some parallel divergence at different localities. Six other outliers were associated with site elevation, four of which were located on chromosome 5 of the reference genome. Our study lends support to a previous hypothesis that divergent selection between gray shingle beaches and inland regions overcomes gene flow and leads to the observed morphological divergence between populations in these adjacent habitats.
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Affiliation(s)
- Richard P Brown
- College of Life Sciences, China Jiliang University, Hangzhou, P.R. China
- School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Hui Sun
- College of Life Sciences, China Jiliang University, Hangzhou, P.R. China
| | - Yuanting Jin
- College of Life Sciences, China Jiliang University, Hangzhou, P.R. China
| | - Carlo Meloro
- School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, United Kingdom
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3
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Florencio M, Patiño J, Nogué S, Traveset A, Borges PAV, Schaefer H, Amorim IR, Arnedo M, Ávila SP, Cardoso P, de Nascimento L, Fernández-Palacios JM, Gabriel SI, Gil A, Gonçalves V, Haroun R, Illera JC, López-Darias M, Martínez A, Martins GM, Neto AI, Nogales M, Oromí P, Rando JC, Raposeiro PM, Rigal F, Romeiras MM, Silva L, Valido A, Vanderpoorten A, Vasconcelos R, Santos AMC. Macaronesia as a Fruitful Arena for Ecology, Evolution, and Conservation Biology. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.718169] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Research in Macaronesia has led to substantial advances in ecology, evolution and conservation biology. We review the scientific developments achieved in this region, and outline promising research avenues enhancing conservation. Some of these discoveries indicate that the Macaronesian flora and fauna are composed of rather young lineages, not Tertiary relicts, predominantly of European origin. Macaronesia also seems to be an important source region for back-colonisation of continental fringe regions on both sides of the Atlantic. This group of archipelagos (Azores, Madeira, Selvagens, Canary Islands, and Cabo Verde) has been crucial to learn about the particularities of macroecological patterns and interaction networks on islands, providing evidence for the development of the General Dynamic Model of oceanic island biogeography and subsequent updates. However, in addition to exceptionally high richness of endemic species, Macaronesia is also home to a growing number of threatened species, along with invasive alien plants and animals. Several innovative conservation and management actions are in place to protect its biodiversity from these and other drivers of global change. The Macaronesian Islands are a well-suited field of study for island ecology and evolution research, mostly due to its special geological layout with 40 islands grouped within five archipelagos differing in geological age, climate and isolation. A large amount of data is now available for several groups of organisms on and around many of these islands. However, continued efforts should be made toward compiling new information on their biodiversity, to pursue various fruitful research avenues and develop appropriate conservation management tools.
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O'Connell KA, Prates I, Scheinberg LA, Mulder KP, Bell RC. Speciation and secondary contact in a fossorial island endemic, the São Tomé caecilian. Mol Ecol 2021; 30:2859-2871. [PMID: 33969550 DOI: 10.1111/mec.15928] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 04/07/2021] [Accepted: 04/14/2021] [Indexed: 02/06/2023]
Abstract
A period of isolation in allopatry typically precedes local adaptation and subsequent divergence among lineages. Alternatively, locally adapted phenotypes may arise and persist in the face of gene flow, resulting in strong correlations between ecologically-relevant phenotypic variation and corresponding environmental gradients. Quantifying genetic, ecological, and phenotypic divergence in such lineages can provide insights into the abiotic and biotic mechanisms that structure populations and drive the accumulation of phenotypic and taxonomic diversity. Low-vagility organisms whose distributions span ephemeral geographic barriers present the ideal evolutionary context within which to address these questions. Here, we combine genetic (mtDNA and genome-wide SNPs) and phenotypic data to investigate the divergence history of caecilians (Amphibia: Gymnophiona) endemic to the oceanic island of São Tomé in the Gulf of Guinea archipelago. Consistent with a previous mtDNA study, we find two phenotypically and genetically distinct lineages that occur along a north-to-south axis with extensive admixture in the centre of the island. Demographic modelling supports divergence in allopatry (~300 kya) followed by secondary contact (~95 kya). Consequently, in contrast to a morphological study that interpreted latitudinal phenotypic variation in these caecilians as a cline within a single widespread species, our analyses suggest a history of allopatric lineage divergence and subsequent hybridization that may have blurred species boundaries. We propose that late Pleistocene volcanic activity favoured allopatric divergence between these lineages with local adaptation to climate maintaining a stable hybrid zone in the centre of São Tomé Island. Our study joins a growing number of systems demonstrating lineage divergence on volcanic islands with stark environmental transitions across small geographic distances.
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Affiliation(s)
- Kyle A O'Connell
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.,Global Genome Initiative, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.,Department of Biological Sciences, George Washington University, Washington, DC, USA
| | - Ivan Prates
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.,Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI, USA
| | - Lauren A Scheinberg
- Department of Herpetology, California Academy of Sciences, San Francisco, CA, USA
| | - Kevin P Mulder
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.,CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal.,Center for Conservation Genomics, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC, USA
| | - Rayna C Bell
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.,Department of Herpetology, California Academy of Sciences, San Francisco, CA, USA
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O'Connell KA, Oaks JR, Hamidy A, Shaney KJ, Kurniawan N, Smith EN, Fujita MK. Impacts of the Toba eruption and montane forest expansion on diversification in Sumatran parachuting frogs (Rhacophorus). Mol Ecol 2020; 29:2994-3009. [PMID: 32633832 DOI: 10.1111/mec.15541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 01/09/2023]
Abstract
Catastrophic events, such as volcanic eruptions, can have profound impacts on the demographic histories of resident taxa. Due to its presumed effect on biodiversity, the Pleistocene eruption of super-volcano Toba has received abundant attention. We test the effects of the Toba eruption on the diversification, genetic diversity, and demography of three co-distributed species of parachuting frogs (Genus Rhacophorus) on Sumatra. We generate target-capture data (~950 loci and ~440,000 bp) for three species of parachuting frogs and use these data paired with previously generated double digest restriction-site associated DNA (ddRADseq) data to estimate population structure and genetic diversity, to test for population size changes using demographic modelling, and to estimate the temporal clustering of size change events using a full-likelihood Bayesian method. We find that populations around Toba exhibit reduced genetic diversity compared with southern populations, and that northern populations exhibit a shift in effective population size around the time of the eruption (~80 kya). However, we infer a stronger signal of expansion in southern populations around ~400 kya, and at least two of the northern populations may have also expanded at this time. Taken together, these findings suggest that the Toba eruption precipitated population declines in northern populations, but that the demographic history of these three species was also strongly impacted by mid-Pleistocene forest expansion during glacial periods. We propose local rather than regional effects of the Toba eruption, and emphasize the dynamic nature of diversification on the Sunda Shelf.
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Affiliation(s)
- Kyle A O'Connell
- Global Genome Initiative, National Museum of Natural History, Smithsonian Institute, Washington, DC, USA.,Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institute, Washington, DC, USA.,Department of Biology and Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, USA.,Department of Biological Sciences, The George Washington University, Washington, DC, USA
| | - Jamie R Oaks
- Department of Biological Sciences and Museum of Natural History, Auburn University, Auburn, Alabama, USA
| | - Amir Hamidy
- Zoology Division, Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences. Gd, Bogor, West Java, Indonesia
| | - Kyle J Shaney
- Institute of Ecology, National Autonomous University of Mexico, Mexico City, Mexico
| | - Nia Kurniawan
- Department of Biology, Universitas Brawijaya, Malang, East Java, Indonesia
| | - Eric N Smith
- Department of Biology and Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, USA
| | - Matthew K Fujita
- Department of Biology and Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, USA
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6
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Tomé B, Pereira A, Jorge F, Carretero MA, Harris DJ, Perera A. Along for the ride or missing it altogether: exploring the host specificity and diversity of haemogregarines in the Canary Islands. Parasit Vectors 2018; 11:190. [PMID: 29554983 PMCID: PMC5859493 DOI: 10.1186/s13071-018-2760-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 02/28/2018] [Indexed: 01/26/2023] Open
Abstract
Background Host-parasite relationships are expected to be strongly shaped by host specificity, a crucial factor in parasite adaptability and diversification. Because whole host communities have to be considered to assess host specificity, oceanic islands are ideal study systems given their simplified biotic assemblages. Previous studies on insular parasites suggest host range broadening during colonization. Here, we investigate the association between one parasite group (haemogregarines) and multiple sympatric hosts (of three lizard genera: Gallotia, Chalcides and Tarentola) in the Canary Islands. Given haemogregarine characteristics and insular conditions, we hypothesized low host specificity and/or occurrence of host-switching events. Methods A total of 825 samples were collected from the three host taxa inhabiting the seven main islands of the Canarian Archipelago, including locations where the different lizards occurred in sympatry. Blood slides were screened to assess prevalence and parasitaemia, while parasite genetic diversity and phylogenetic relationships were inferred from 18S rRNA gene sequences. Results Infection levels and diversity of haplotypes varied geographically and across host groups. Infections were found in all species of Gallotia across the seven islands, in Tarentola from Tenerife, La Gomera and La Palma, and in Chalcides from Tenerife, La Gomera and El Hierro. Gallotia lizards presented the highest parasite prevalence, parasitaemia and diversity (seven haplotypes), while the other two host groups (Chalcides and Tarentola) harbored one haplotype each, with low prevalence and parasitaemia levels, and very restricted geographical ranges. Host-sharing of the same haemogregarine haplotype was only detected twice, but these rare instances likely represent occasional cross-infections. Conclusions Our results suggest that: (i) Canarian haemogregarine haplotypes are highly host-specific, which might have restricted parasite host expansion; (ii) haemogregarines most probably reached the Canary Islands in three colonization events with each host genus; and (iii) the high number of parasite haplotypes infecting Gallotia hosts and their restricted geographical distribution suggest co-diversification. These findings contrast with our expectations derived from results on other insular parasites, highlighting how host specificity depends on parasite characteristics and evolutionary history. Electronic supplementary material The online version of this article (10.1186/s13071-018-2760-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Beatriz Tomé
- CIBIO, InBIO - Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal. .,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal.
| | - Ana Pereira
- CIBIO, InBIO - Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - Fátima Jorge
- Department of Zoology, University of Otago, 340 Great King Street, PO Box 56, Dunedin, 9054, New Zealand
| | - Miguel A Carretero
- CIBIO, InBIO - Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - D James Harris
- CIBIO, InBIO - Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Ana Perera
- CIBIO, InBIO - Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
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7
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Sagot M, Phillips CD, Baker RJ, Stevens RD. Human-modified habitats change patterns of population genetic structure and group relatedness in Peter's tent-roosting bats. Ecol Evol 2016; 6:6050-63. [PMID: 27648225 PMCID: PMC5016631 DOI: 10.1002/ece3.2255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/19/2016] [Accepted: 05/23/2016] [Indexed: 11/23/2022] Open
Abstract
Although coloniality is widespread among mammals, it is still not clear what factors influence composition of social groups. As animals need to adapt to multiple habitat and environmental conditions throughout their range, variation in group composition should be influenced by adaptive adjustment to different ecological factors. Relevant to anthropogenic disturbance, increased habitat modification by humans can alter species' presence, density, and population structure. Therefore, it is important to understand the consequences of changes to landscape composition, in particular how habitat modification affects social structure of group-forming organisms. Here, we combine information on roosting associations with genetic structure of Peter's tent-roosting bats, Uroderma bilobatum to address how different habitat characteristics at different scales affect structure of social groups. By dividing analyses by age and sex, we determined that genetic structure was greater for adult females than adult males or offspring. Habitat variables explained 80% of the variation in group relatedness (mainly influenced by female relatedness) with roost characteristics contributing the most explained variation. This suggests that females using roosts of specific characteristics exhibit higher relatedness and seem to be philopatric. These females mate with more males than do more labile female groups. Results describe ecological and microevolutionary processes, which affect relatedness and social structure; findings are highly relevant to species distributions in both natural and human-modified environments.
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Affiliation(s)
- Maria Sagot
- Department of Biological SciencesState University of New York at OswegoOswegoNew York13126
| | - Caleb D. Phillips
- Department of Biological SciencesTexas Tech UniversityLubbockTexas79409
| | - Robert J. Baker
- Department of Biological SciencesTexas Tech UniversityLubbockTexas79409
| | - Richard D. Stevens
- Department of Natural Resources ManagementTexas Tech UniversityLubbockTexas79409
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Opatova V, Arnedo MA. Spiders on a Hot Volcanic Roof: Colonisation Pathways and Phylogeography of the Canary Islands Endemic Trap-Door Spider Titanidiops canariensis (Araneae, Idiopidae). PLoS One 2014; 9:e115078. [PMID: 25494329 PMCID: PMC4262472 DOI: 10.1371/journal.pone.0115078] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 11/03/2014] [Indexed: 11/19/2022] Open
Abstract
Studies conducted on volcanic islands have greatly contributed to our current understanding of how organisms diversify. The Canary Islands archipelago, located northwest of the coast of northern Africa, harbours a large number of endemic taxa. Because of their low vagility, mygalomorph spiders are usually absent from oceanic islands. The spider Titanidiops canariensis, which inhabits the easternmost islands of the archipelago, constitutes an exception to this rule. Here, we use a multi-locus approach that combines three mitochondrial and four nuclear genes to investigate the origins and phylogeography of this remarkable trap-door spider. We provide a timeframe for the colonisation of the Canary Islands using two alternative approaches: concatenation and species tree inference in a Bayesian relaxed clock framework. Additionally, we investigate the existence of cryptic species on the islands by means of a Bayesian multi-locus species delimitation method. Our results indicate that T. canariensis colonised the Canary Islands once, most likely during the Miocene, although discrepancies between the timeframes from different approaches make the exact timing uncertain. A complex evolutionary history for the species in the archipelago is revealed, which involves two independent colonisations of Fuerteventura from the ancestral range of T. canariensis in northern Lanzarote and a possible back colonisation of southern Lanzarote. The data further corroborate a previously proposed volcanic refugium, highlighting the impact of the dynamic volcanic history of the island on the phylogeographic patterns of the endemic taxa. T. canariensis includes at least two different species, one inhabiting the Jandia peninsula and central Fuerteventura and one spanning from central Fuerteventura to Lanzarote. Our data suggest that the extant northern African Titanidiops lineages may have expanded to the region after the islands were colonised and, hence, are not the source of colonisation. In addition, T. maroccanus may harbour several cryptic species.
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Affiliation(s)
- Vera Opatova
- Institut de Recerca de la Biodiversitat & Departament de Biologia Animal, Universitat de Barcelona, Barcelona, Spain
- * E-mail:
| | - Miquel A. Arnedo
- Institut de Recerca de la Biodiversitat & Departament de Biologia Animal, Universitat de Barcelona, Barcelona, Spain
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9
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Carretero MA, Jorge F, Llorente GA, Roca V. Relationships between helminth communities and diet in Canarian lizards: the evidence fromGallotia atlantica(Squamata: Lacertidae). J NAT HIST 2014. [DOI: 10.1080/00222933.2013.869366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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López H, Hernández-Teixidor D, Macías-Hernández N, Juan C, Oromí P. A taxonomic revision and species delimitation of the genus Purpuraria
Enderlein, 1929 (Orthoptera: Pamphagidae) using an integrative approach. J ZOOL SYST EVOL RES 2013. [DOI: 10.1111/jzs.12023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Heriberto López
- Island Ecology and Evolution Research Group (IPNA-CSIC); Tenerife Canary Islands Spain
- Department of Biología Animal; Universidad La Laguna; Tenerife Canary Islands Spain
| | | | | | - Carlos Juan
- Department of Biologia; Universitat Illes Balears; Palma de Mallorca Spain
| | - Pedro Oromí
- Department of Biología Animal; Universidad La Laguna; Tenerife Canary Islands Spain
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11
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Macías-Hernández N, Bidegaray-Batista L, Emerson BC, Oromí P, Arnedo M. The Imprint of Geologic History on Within-Island Diversification of Woodlouse-Hunter Spiders (Araneae, Dysderidae) in the Canary Islands. J Hered 2013; 104:341-56. [DOI: 10.1093/jhered/est008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Macías-Hernández N, Bidegaray-Batista L, Oromí P, Arnedo MA. The odd couple: contrasting phylogeographic patterns in two sympatric sibling species of woodlouse-hunter spiders in the Canary Islands. J ZOOL SYST EVOL RES 2012. [DOI: 10.1111/jzs.12008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nuria Macías-Hernández
- Departamento de Biología Animal; Universidad de La Laguna; Tenerife Canary Islands
- Biodiversity Research Institute; Departament de Biologia Animal; Universitat de Barcelona; Barcelona Spain
| | - Leticia Bidegaray-Batista
- Biodiversity Research Institute; Departament de Biologia Animal; Universitat de Barcelona; Barcelona Spain
| | - Pedro Oromí
- Departamento de Biología Animal; Universidad de La Laguna; Tenerife Canary Islands
| | - Miquel A. Arnedo
- Biodiversity Research Institute; Departament de Biologia Animal; Universitat de Barcelona; Barcelona Spain
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Roesch Goodman K, Welter SC, Roderick GK. Genetic divergence is decoupled from ecological diversification in the Hawaiian Nesosydne planthoppers. Evolution 2012; 66:2798-814. [PMID: 22946804 DOI: 10.1111/j.1558-5646.2012.01643.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Adaptive radiation involves ecological shifts coupled with isolation of gene pools. However, we know little about what drives the initial stages of divergence. We study a system in which ecological diversification is found within a chronologically well-defined geological matrix to provide insight into this enigmatic phase of radiation. We tested the hypothesis that a period of geographic isolation precedes ecological specialization in an adaptive radiation of host-specialized Hawaiian planthoppers. We examined population structure and history using mitochondrial and multiple independent microsatellite loci in a species whose geographic distribution on the island of Hawaii enabled us to observe the chronology of divergence in its very earliest stages. We found that genetic divergence is associated with geographic features but not different plant hosts and that divergence times are very recent and on the same timescales as the dynamic geology of the island. Our results suggest an important role for geography in the dynamics of the early stages of divergence.
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Affiliation(s)
- Kari Roesch Goodman
- Department of Environmental Science, Policy and Management, 130 Mulford Hall, University of California, Berkeley, California 94720-3114, USA.
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14
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CROUCHER PETERJP, OXFORD GEOFFS, GILLESPIE ROSEMARYG. Population structure and dispersal in a patchy landscape: nuclear and mitochondrial markers reveal area effects in the spider Theridion californicum (Araneae: Theridiidae). Biol J Linn Soc Lond 2011. [DOI: 10.1111/j.1095-8312.2011.01734.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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STROSCIO STEFANIA, BAVIERA COSIMO, FRATI FRANCESCO, LO PARO GIUSEPPE, NARDI FRANCESCO. Colonization of the Aeolian Islands byPimelia rugulosa rugulosaGermar, 1824 (Coleoptera: Tenebrionidae) inferred from the genetic structure of populations: geological and environmental relations. Biol J Linn Soc Lond 2011. [DOI: 10.1111/j.1095-8312.2011.01701.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Balmer O, Ciofi C, Galbraith DA, Swingland IR, Zug GR, Caccone A. Population genetic structure of Aldabra giant tortoises. J Hered 2010; 102:29-37. [PMID: 20805288 DOI: 10.1093/jhered/esq096] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Evolution of population structure on islands is the result of physical processes linked to volcanism, orogenic events, changes in sea level, as well as habitat variation. We assessed patterns of genetic structure in the giant tortoise of the Aldabra atoll, where previous ecological studies suggested population subdivisions as a result of landscape discontinuity due to unsuitable habitat and island separation. Analysis of mitochondrial DNA (mtDNA) control region sequences and allelic variation at 8 microsatellite loci were conducted on tortoises sampled in 3 locations on the 2 major islands of Aldabra. We found no variation in mtDNA sequences. This pattern corroborated earlier work supporting the occurrence of a founding event during the last interglacial period and a further reduction in genetic variability during historical time. On the other hand, significant population structure recorded at nuclear loci suggested allopatric divergence possibly due to geographical barriers among islands and ecological partitions hindering tortoise movements within islands. This is the first attempt to study the population genetics of Aldabra tortoises, which are now at carrying capacity in an isolated terrestrial ecosystem where ecological factors appear to have a strong influence on population dynamics.
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Affiliation(s)
- Oliver Balmer
- Institute of Zoology, University of Basel, Basel, Switzerland
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