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Campos-Soto R, Rodríguez-Valenzuela E, Bruna Y, Díaz-Campusano G, Cianferoni F, Boric-Bargetto D, Torres-Pérez F. Phylogenetic Analyses of Lizards from the Chilean Humboldt Archipelago Reveal a New Species for the Chañaral Island (Squamata: Liolaemidae). Animals (Basel) 2023; 13:3576. [PMID: 38003193 PMCID: PMC10668673 DOI: 10.3390/ani13223576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
The Humboldt Archipelago, situated on Chile's north-central coast, is renowned for its exceptional biodiversity. However, lizards of the Liolaemus genus are a particularly understudied group in this archipelago. Liolaemus genus is divided into two clades: chiliensis and nigromaculatus. Within the nigromaculatus clade the zapallarensis group is restricted to the semi-arid and arid coastal habitats of the Atacama Desert in north-central Chile. While it has been reported that lizards from the zapallarensis group inhabit various islands within the Humboldt Archipelago, there has been limited knowledge regarding their specific species identification. To identify the lizard species inhabiting these islands, we conducted phylogenetic analyses using a mitochondrial gene and examined morphological characteristics. Our findings reveal that lizards from the Damas, Choros, and Gaviota islands belong to Liolaemus silvai. In contrast, the lizards on Chañaral Island form a distinct and previously unrecognised group, clearly distinguishable from Liolaemus silvai. In conclusion, our study not only confirms the presence of L. silvai on the Damas, Choros, and Gaviota islands but also describes a new lizard species on Chañaral Island named Liolaemus carezzae sp. nov. These findings contribute valuable insights into the biodiversity of these islands and introduce a newly discovered endemic taxon to the region, enriching our understanding of Chile's unique island ecosystems.
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Affiliation(s)
- Ricardo Campos-Soto
- Escuela de Ciencias Agrícolas y Veterinarias, Universidad Viña del Mar, Viña del Mar 2572007, Chile
| | - Evelyn Rodríguez-Valenzuela
- Instituto de Biología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (E.R.-V.); (Y.B.); (G.D.-C.); (F.C.); (D.B.-B.); (F.T.-P.)
| | - Yareta Bruna
- Instituto de Biología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (E.R.-V.); (Y.B.); (G.D.-C.); (F.C.); (D.B.-B.); (F.T.-P.)
| | - Gabriel Díaz-Campusano
- Instituto de Biología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (E.R.-V.); (Y.B.); (G.D.-C.); (F.C.); (D.B.-B.); (F.T.-P.)
| | - Franco Cianferoni
- Instituto de Biología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (E.R.-V.); (Y.B.); (G.D.-C.); (F.C.); (D.B.-B.); (F.T.-P.)
| | - Dusan Boric-Bargetto
- Instituto de Biología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (E.R.-V.); (Y.B.); (G.D.-C.); (F.C.); (D.B.-B.); (F.T.-P.)
| | - Fernando Torres-Pérez
- Instituto de Biología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile; (E.R.-V.); (Y.B.); (G.D.-C.); (F.C.); (D.B.-B.); (F.T.-P.)
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2
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Boric-Bargetto D, Zúñiga-Reinoso Á, Inostroza-Michel O, Rodríguez-Serrano E, González-Acuña D, Palma RE, Hernández CE. A comprehensive overview of the genetic diversity in Thylamys elegans (Didelphimorphia: Didelphidae): establishing the phylogeographic determinants. Rev Chil de Hist Nat 2021. [DOI: 10.1186/s40693-021-00103-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
Background
For the genus Thylamys, the rivers have been reported as barriers to dispersal, limiting current and historical distribution of its lineages. We hypothesized that the Maipo river has affected the genetic structure of northern and southern lineages of Thylamys elegans, recovering a phylogenetic relationships with reciprocally monophyletic sister groups on opposite river banks. We evaluated the role of other rivers in the Mediterranean zone of Chile as historical and recent modulators of the biogeographic processes of this species.
Methods
We applied a phylogeographic approach, using the cytochrome-b mitochondrial gene for 93 individuals of T. elegans, from 37 localities in a latitudinal gradient between 21°25’ and 35˚56’S, encompassing a geographic area between the Atacama Desert and most of the Mediterranean Chilean zone.
Results
The phylogenetics results recovered six lineages within T. elegans: Thylamys elegans elegans, Thylamys elegans coquimbensis, the Loa lineage and three other lineages not described previously (Aconcagua, South 1 and South 2). We suggest that following rivers play a role like primary barrier: the Maipo river in the genetic differentiation of northern and southern ancestral lineages, and the Mataquito river and its tributary Teno river for the South 1 and South 2 lineages. On the other hand, the Quilimarí river preserve the genetic divergence in T. e. coquimbensis and Aconcagua lineage and the Aconcagua river in Aconcagua lineage and T. e. elegans acting like secondary barriers.
Conclusions
We concluded that the genetic diversity and biogeographic history of T. elegans was shaped by mountain glaciers, changes in river water levels during the Pleistocene glaciations and hyperaridity, promoting the differentiation and persistance of the T. elegans lineages.
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Torres-Pérez F, Palma RE, Boric-Bargetto D, Vial C, Ferrés M, Vial PA, Martínez-Valdebenito C, Pavletic C, Parra A, Marquet PA, Mertz GJ. A 19 Year Analysis of Small Mammals Associated with Human Hantavirus Cases in Chile. Viruses 2019; 11:v11090848. [PMID: 31547341 PMCID: PMC6784195 DOI: 10.3390/v11090848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/07/2019] [Accepted: 09/09/2019] [Indexed: 12/13/2022] Open
Abstract
Small mammals present in areas where hantavirus cardiopulmonary syndrome (HCPS) cases had occurred in central and southern Chile were captured and analyzed to evaluate the abundance of rodents and seroprevalence rates of antibodies to Andes orthohantavirus (ANDV). Sampling areas ranged from the Coquimbo to Aysén regions (30–45° S approx.) regions. Ninety-two sites in peridomestic and countryside areas were evaluated in 19 years of sampling. An antibody against ANDV was detected by strip immunoassay in 58 of 1847 specimens captured using Sherman traps. Of the eleven species of rodents sampled, Abrothrix olivacea, Oligoryzomys longicaudatus and Abrothrix hirta were the most frequently trapped. O. longicaudatus had the highest seropositivity rate, and by logistic regression analysis, O. longicaudatus of at least 60 g had 80% or higher probability to be seropositive. Sex, age and wounds were significantly related to seropositivity only for O. longicaudatus. Across administrative regions, the highest seropositivity was found in the El Maule region (34.8–36.2° S), and the highest number of HCPS cases was registered in the Aysén region. Our results highlight the importance of long term and geographically extended studies, particularly for highly fluctuating pathogens and their reservoirs, to understand the implications of the dynamics and transmission of zoonotic diseases in human populations.
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Affiliation(s)
- Fernando Torres-Pérez
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile.
| | - R Eduardo Palma
- Laboratorio de Biología Evolutiva, Departamento de Ecología, Pontificia Universidad Católica de Chile; Santiago 8331150, Chile.
| | - Dusan Boric-Bargetto
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile.
| | - Cecilia Vial
- Programa Hantavirus, Instituto de Ciencias e Innovación en Medicina, Facultad de Medicina, Clínica Alemana, Universidad del Desarrollo, Santiago 7610658, Chile.
| | - Marcela Ferrés
- Laboratorio de Infectología y Virología Molecular, Red Salud UC-Christus, Departamento de Enfermedades Infecciosas e Inmunología Pediátricas, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile.
| | - Pablo A Vial
- Instituto de Ciencias e Innovación en Medicina, Facultad de Medicina, Clínica Alemana, Universidad del Desarrollo, Santiago 7610658, Chile.
| | - Constanza Martínez-Valdebenito
- Laboratorio de Infectología y Virología Molecular, Red Salud UC-Christus, Departamento de Enfermedades Infecciosas e Inmunología Pediátricas, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile.
| | - Carlos Pavletic
- Oficina de Zoonosis y Control de Vectores, División de Políticas Publicas Saludables y Promoción, Subsecretaría de Salud Pública, Ministerio de Salud, Santiago 8320064, Chile.
| | - Alonso Parra
- Oficina de Zoonosis y Control de Vectores, División de Políticas Publicas Saludables y Promoción, Subsecretaría de Salud Pública, Ministerio de Salud, Santiago 8320064, Chile.
| | - Pablo A Marquet
- Departamento de Ecología, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile.
| | - Gregory J Mertz
- Division of Infectious Diseases, Department of Internal Medicine, University of New Mexico, Albuquerque 87131, New Mexico.
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Torres-Pérez F, Boric-Bargetto D, Rodríguez-Valenzuela E, Escobar C, Palma RE. Molecular phylogenetic analyses reveal the importance of taxon sampling in cryptic diversity: Liolaemus nigroviridis and L. monticola (Liolaeminae) as focal species. Rev Chil de Hist Nat 2017. [DOI: 10.1186/s40693-017-0068-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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5
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Palma RE, Gutiérrez-Tapia P, González JF, Boric-Bargetto D, Torres-Pérez F. Mountaintops phylogeography: A case study using small mammals from the Andes and the coast of central Chile. PLoS One 2017; 12:e0180231. [PMID: 28672032 PMCID: PMC5495339 DOI: 10.1371/journal.pone.0180231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 06/12/2017] [Indexed: 11/18/2022] Open
Abstract
We evaluated if two sigmodontine rodent taxa (Abrothrix olivacea and Phyllotis darwini) from the Andes and Coastal mountaintops of central Chile, experienced distributional shifts due to altitudinal movements of habitat and climate change during and after the Last Glacial Maximum (LGM). We tested the hypothesis that during LGM populations of both species experienced altitudinal shifts from the Andes to the lowlands and the coastal Cordillera, and then range retractions during interglacial towards higher elevations in the Andes. These distributional shifts may have left remnants populations on the mountaintops. We evaluated the occurrence of intraspecific lineages for each species, to construct distribution models at LGM and at present, as extreme climatic conditions for each lineage. Differences in distribution between extreme climatic conditions were interpreted as post-glacial distributional shifts. Abrothrix olivacea displayed a lineage with shared sequences between both mountain systems, whereas a second lineage was restricted to the Andes. A similar scenario of panmictic unit in the past was recovered for A. olivacea in the Andes, along with an additional unit that included localities from the rest of its distribution. For P. darwini, both lineages recovered were distributed in coastal and Andean mountain ranges at present as well, and structuring analyses for this species recovered coastal and Andean localities as panmictic units in the past. Niche modeling depicted differential postglacial expansions in the recovered lineages. Results suggest that historical events such as LGM triggered the descending of populations to Andean refuge areas (one of the A. olivacea's lineages), to the lowlands, and to the coastal Cordillera. Backward movements of populations after glacial retreats may have left isolates on mountaintops of the coastal Cordillera, suggesting that current species distribution would be the outcome of climate change and habitat reconfiguration after LGM.
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Affiliation(s)
- R. Eduardo Palma
- Departamento de Ecología, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Gutiérrez-Tapia
- Laboratorio de Ecología y Biodiversidad, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Juan F. González
- Departamento de Ecología, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Dusan Boric-Bargetto
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Fernando Torres-Pérez
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
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Affiliation(s)
- Fernando Torres-Pérez
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Dusan Boric-Bargetto
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
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Barriga GP, Boric-Bargetto D, San Martin MC, Neira V, van Bakel H, Thompsom M, Tapia R, Toro-Ascuy D, Moreno L, Vasquez Y, Sallaberry M, Torres-Pérez F, González-Acuña D, Medina RA. Avian Influenza Virus H5 Strain with North American and Eurasian Lineage Genes in an Antarctic Penguin. Emerg Infect Dis 2016; 22:2221-2223. [PMID: 27662612 PMCID: PMC5189164 DOI: 10.3201/eid2212.161076] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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8
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Boric-Bargetto D, Zúñiga-Reinoso Á, Cancino RA, González-Acuña D, Rodríguez-Serrano E, Palma RE, Hernández CE. Phylogenetic evaluation of taxonomic definition of didelphid mouse opossum of the genus Thylamys from valleys of Coquimbo region, Chile. Zootaxa 2016; 4105:339-52. [PMID: 27394783 DOI: 10.11646/zootaxa.4105.4.3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Indexed: 11/04/2022]
Abstract
Only two species of Didelphidae are currently recognized in Chile, the sister species Thylamys elegans, endemic of Mediterranean ecorregion and Thylamys pallidior, the inhabitant of the Puna and desert canyons. Three subspecies have been described for T. elegans: T. e. elegans, T. e. coquimbensis and T. e. soricinus. However, a recent study based on morphological analyses, synonymized T. elegans coquimbensis from the Coquimbo valleys (30-31° S) with T. pallidior and proposed that T. elegans and T. pallidior could be in sympatry at Coquimbo valleys between Fray Jorge (30°40'S) and Paiguano (30°02' S). We assess the current definition of T. e. coquimbensis and T. e. elegans, as well as this taxonomical conflict among the mouse opossums from the Coquimbo valleys through phylogenetic analyses of cytochrome b mitochondrial gene sequences. In this study, for the first time, we used specimens from the type localities of T. e. coquimbensis and T. e. elegans. In addition, we analyzed diagnostic cranial structures for this taxonomic revision. The results supported two allopatric clades, allowing us to keep the taxonomic definition of T. e. elegans and T. e. coquimbensis as phylogenetic reciprocal monophyletic clades and polyphyletic with T. pallidior. This result corroborates previous morphological analyses, which support that mouse opossums from the Coquimbo valleys are T. e. coquimbensis, thus extending its geographic distribution to the coast of Coquimbo and Atacama regions. We don´t have evidence for sympatric distribution between T. elegans and T. pallidior in the Coquimbo region.
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Affiliation(s)
- Dusan Boric-Bargetto
- Facultad de Ciencias Naturales y Oceanográficas, Departamento de Zoología, Universidad de Concepción, Barrio Universitario s/n Concepción, Santiago, Chile Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, 2373223, Chile;
| | - Álvaro Zúñiga-Reinoso
- Laboratorio de Genética y Evolución, Facultad de Ciencias, Departamento de Ciencias Ecológicas, Universidad de Chile, Las Palmeras, 3425 Santiago, Chile; unknown
| | - Ricardo A Cancino
- Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Alameda 340, Santiago, 6513677, Chile; unknown
| | - Daniel González-Acuña
- Departamento de Ciencias Pecuarias, Universidad de Concepción, Av. Vicente Méndez 595, Chillán, Chile; unknown
| | - Enrique Rodríguez-Serrano
- Facultad de Ciencias Naturales y Oceanográficas, Departamento de Zoología, Universidad de Concepción, Barrio Universitario s/n Concepción, Santiago, Chile; unknown
| | - R Eduardo Palma
- Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Alameda 340, Santiago, 6513677, Chile; unknown
| | - Cristián E Hernández
- Facultad de Ciencias Naturales y Oceanográficas, Departamento de Zoología, Universidad de Concepción, Barrio Universitario s/n Concepción, Santiago, Chile; unknown
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Palma RE, Boric-Bargetto D, Jayat JP, Flores DA, Zeballos H, Pacheco V, Cancino RA, Alfaro FD, Rodríguez-Serrano E, Pardiñas UFJ. Molecular phylogenetics of mouse opossums: new findings on the phylogeny ofThylamys(Didelphimorphia, Didelphidae). ZOOL SCR 2014. [DOI: 10.1111/zsc.12051] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Eduardo Palma
- Departamento de Ecología; Pontificia Universidad Católica de Chile; Alameda 340 Santiago 6513677 Chile
| | - Dusan Boric-Bargetto
- Facultad de Ciencias Naturales y Oceanográficas; Departamento de Zoología; Universidad de Concepción; Barrio Universitario s/n Concepción Santiago Chile
| | - J. Pablo Jayat
- Facultad de Ciencias Naturales e Instituto Miguel Lillo; Instituto de Ecología Regional (IER); Universidad Nacional de Tucumán; Casilla de Correo 34 4107 Yerba Buena Tucumán Argentina
| | - David A. Flores
- CONICET; División Mastozoología; Museo Argentino de Ciencias Naturales Bernardino Rivadavia; Av. Angel Gallardo 470 C1405DJR Buenos Aires Argentina
| | - Horacio Zeballos
- Centro de Investigación para la Promoción de los Pueblos; Cooperativa Víctor Andrés Belaúnde I-8 Yanahuara Arequipa Perú
| | - Víctor Pacheco
- Museo de Historia Natural; Universidad Nacional Mayor de San Marcos; Lima Lima 14 Peru
| | - Ricardo A. Cancino
- Departamento de Ecología; Pontificia Universidad Católica de Chile; Alameda 340 Santiago 6513677 Chile
| | - Fernando D. Alfaro
- Departamento de Ecología; Pontificia Universidad Católica de Chile; Alameda 340 Santiago 6513677 Chile
| | - Enrique Rodríguez-Serrano
- Facultad de Ciencias Naturales y Oceanográficas; Departamento de Zoología; Universidad de Concepción; Barrio Universitario s/n Concepción Santiago Chile
| | - Ulyses F. J. Pardiñas
- Centro Nacional Patagónico; Casilla de Correo 128, 9120 Puerto Madryn Chubut Argentina
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Hernández CE, Rodríguez-Serrano E, Avaria-Llautureo J, Inostroza-Michael O, Morales-Pallero B, Boric-Bargetto D, Canales-Aguirre CB, Marquet PA, Meade A. Using phylogenetic information and the comparative method to evaluate hypotheses in macroecology. Methods Ecol Evol 2013. [DOI: 10.1111/2041-210x.12033] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cristián E. Hernández
- Laboratorio de Ecología Evolutiva and Filoinformática; Departamento de Zoología; Facultad de Ciencias Naturales y Oceanográficas; Universidad de Concepción; Casilla 160-C; Concepción; Chile
| | - Enrique Rodríguez-Serrano
- Laboratorio de Ecología Evolutiva and Filoinformática; Departamento de Zoología; Facultad de Ciencias Naturales y Oceanográficas; Universidad de Concepción; Casilla 160-C; Concepción; Chile
| | - Jorge Avaria-Llautureo
- Laboratorio de Ecología Evolutiva and Filoinformática; Departamento de Zoología; Facultad de Ciencias Naturales y Oceanográficas; Universidad de Concepción; Casilla 160-C; Concepción; Chile
| | - Oscar Inostroza-Michael
- Laboratorio de Ecología Evolutiva and Filoinformática; Departamento de Zoología; Facultad de Ciencias Naturales y Oceanográficas; Universidad de Concepción; Casilla 160-C; Concepción; Chile
| | - Bryan Morales-Pallero
- Laboratorio de Ecología Evolutiva and Filoinformática; Departamento de Zoología; Facultad de Ciencias Naturales y Oceanográficas; Universidad de Concepción; Casilla 160-C; Concepción; Chile
| | - Dusan Boric-Bargetto
- Laboratorio de Ecología Evolutiva and Filoinformática; Departamento de Zoología; Facultad de Ciencias Naturales y Oceanográficas; Universidad de Concepción; Casilla 160-C; Concepción; Chile
| | - Cristian B. Canales-Aguirre
- Laboratorio de Ecología Evolutiva and Filoinformática; Departamento de Zoología; Facultad de Ciencias Naturales y Oceanográficas; Universidad de Concepción; Casilla 160-C; Concepción; Chile
| | | | - Andrew Meade
- School of Biological Sciences; University of Reading; Reading; Berkshire; RG66BX; UK
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Boric-Bargetto D, Rodríguez-Serrano E, Hernández CE, Jaksic FM, Palma RE. Temporal variation in genetic diversity during an outbreak of Oligoryzomys longicaudatus (Rodentia, Sigmodontinae) in a temperate forest of southern Chile. BIOCHEM SYST ECOL 2012. [DOI: 10.1016/j.bse.2012.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Avaria-Llautureo J, Hernández CE, Boric-Bargetto D, Canales-Aguirre CB, Morales-Pallero B, Rodríguez-Serrano E. Body size evolution in extant Oryzomyini rodents: Cope's rule or miniaturization? PLoS One 2012; 7:e34654. [PMID: 22509339 PMCID: PMC3318010 DOI: 10.1371/journal.pone.0034654] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Accepted: 03/08/2012] [Indexed: 11/26/2022] Open
Abstract
At the macroevolutionary level, one of the first and most important hypotheses that proposes an evolutionary tendency in the evolution of body sizes is “Cope's rule". This rule has considerable empirical support in the fossil record and predicts that the size of species within a lineage increases over evolutionary time. Nevertheless, there is also a large amount of evidence indicating the opposite pattern of miniaturization over evolutionary time. A recent analysis using a single phylogenetic tree approach and a Bayesian based model of evolution found no evidence for Cope's rule in extant mammal species. Here we utilize a likelihood-based phylogenetic method, to test the evolutionary trend in body size, which considers phylogenetic uncertainty, to discern between Cope's rule and miniaturization, using extant Oryzomyini rodents as a study model. We evaluated body size trends using two principal predictions: (a) phylogenetically related species are more similar in their body size, than expected by chance; (b) body size increased (Cope's rule)/decreased (miniaturization) over time. Consequently the distribution of forces and/or constraints that affect the tendency are homogenous and generate this directional process from a small/large sized ancestor. Results showed that body size in the Oryzomyini tribe evolved according to phylogenetic relationships, with a positive trend, from a small sized ancestor. Our results support that the high diversity and specialization currently observed in the Oryzomyini tribe is a consequence of the evolutionary trend of increased body size, following and supporting Cope's rule.
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Affiliation(s)
- Jorge Avaria-Llautureo
- Laboratorio de Ecología Molecular & Filoinformática, Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
| | - Cristián E. Hernández
- Laboratorio de Ecología Molecular & Filoinformática, Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
- * E-mail:
| | - Dusan Boric-Bargetto
- Laboratorio de Ecología Molecular & Filoinformática, Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
| | - Cristian B. Canales-Aguirre
- Laboratorio de Ecología Molecular & Filoinformática, Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
| | - Bryan Morales-Pallero
- Laboratorio de Ecología Molecular & Filoinformática, Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
| | - Enrique Rodríguez-Serrano
- Laboratorio de Ecología Molecular & Filoinformática, Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
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Palma RE, Boric-Bargetto D, Torres-Pérez F, Hernández CE, Yates TL. Glaciation effects on the phylogeographic structure of Oligoryzomys longicaudatus (Rodentia: Sigmodontinae) in the southern Andes. PLoS One 2012; 7:e32206. [PMID: 22396751 PMCID: PMC3291571 DOI: 10.1371/journal.pone.0032206] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 01/24/2012] [Indexed: 12/04/2022] Open
Abstract
The long-tailed pygmy rice rat Oligoryzomys longicaudatus (Sigmodontinae), the major reservoir of Hantavirus in Chile and Patagonian Argentina, is widely distributed in the Mediterranean, Temperate and Patagonian Forests of Chile, as well as in adjacent areas in southern Argentina. We used molecular data to evaluate the effects of the last glacial event on the phylogeographic structure of this species. We examined if historical Pleistocene events had affected genetic variation and spatial distribution of this species along its distributional range. We sampled 223 individuals representing 47 localities along the species range, and sequenced the hypervariable domain I of the mtDNA control region. Aligned sequences were analyzed using haplotype network, bayesian population structure and demographic analyses. Analysis of population structure and the haplotype network inferred three genetic clusters along the distribution of O. longicaudatus that mostly agreed with the three major ecogeographic regions in Chile: Mediterranean, Temperate Forests and Patagonian Forests. Bayesian Skyline Plots showed constant population sizes through time in all three clusters followed by an increase after and during the Last Glacial Maximum (LGM; between 26,000-13,000 years ago). Neutrality tests and the "g" parameter also suggest that populations of O. longicaudatus experienced demographic expansion across the species entire range. Past climate shifts have influenced population structure and lineage variation of O. longicaudatus. This species remained in refugia areas during Pleistocene times in southern Temperate Forests (and adjacent areas in Patagonia). From these refugia, O. longicaudatus experienced demographic expansions into Patagonian Forests and central Mediterranean Chile using glacial retreats.
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Affiliation(s)
- R Eduardo Palma
- Centro de Estudios Avanzados en Ecología y Biodiversidad, CASEB, and Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Torres-Pérez F, Lamborot M, Boric-Bargetto D, Hernández CE, Ortiz JC, Palma RE. Phylogeography of a mountain lizard species: an ancient fragmentation process mediated by riverine barriers in the Liolaemus monticola complex (Sauria: Liolaemidae). J ZOOL SYST EVOL RES 2007. [DOI: 10.1111/j.1439-0469.2006.00392.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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