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Schultz EB, Santana TEZ, Silva FF, Garcia AO, Oliveira HR, Rodrigues MT, Brito LF. Short communication: Genetic parameter estimates for caprine arthritis encephalitis in dairy goats. J Dairy Sci 2020; 103:6407-6411. [PMID: 32331882 DOI: 10.3168/jds.2019-17740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 02/20/2020] [Indexed: 01/14/2023]
Abstract
Caprine arthritis encephalitis (CAE) is a chronic disease caused by a retrovirus from the Lentivirus genus. No effective vaccines or treatments exist, and therefore genetic selection for CAE resistance might be a feasible alternative. To our best knowledge, no other studies have investigated the genetic architecture of CAE resistance in dairy goats. In this context, this study was designed to estimate genetic parameters for CAE infection in Alpine and Saanen goats using a Bayesian threshold model. A total of 542 adult goats (and >3-generation pedigree), which were group-housed in a population with high CAE prevalence, were tested based on a serological infection assessment test (negative = 1 or positive = 2) and used for this study. Genetic parameters were estimated using the BLUPF90 family programs. There was considerable genetic variability for CAE resistance, and pedigree-based heritability was significantly different from zero (0.026 < heritability < 0.128). Our findings indicate that the prevalence of CAE in goat herds can be reduced or eliminated through direct genetic selection for CAE resistance in addition to proper management strategies.
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Melo-Sampaio PR, Prates I, Peloso PLV, Recoder R, Dal Vechio F, Marques-Souza S, Rodrigues MT. A new nurse frog from Southwestern Amazonian highlands, with notes on the phylogenetic affinities of Allobates alessandroi (Aromobatidae). J NAT HIST 2020. [DOI: 10.1080/00222933.2020.1727972] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sheu Y, Zurano JP, Ribeiro‐Junior MA, Ávila‐Pires TC, Rodrigues MT, Colli GR, Werneck FP. The combined role of dispersal and niche evolution in the diversification of Neotropical lizards. Ecol Evol 2020; 10:2608-2625. [PMID: 32185006 PMCID: PMC7069304 DOI: 10.1002/ece3.6091] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 01/23/2023] Open
Abstract
Ecological requirements and environmental conditions can influence diversification across temporal and spatial scales. Understanding the role of ecological niche evolution under phylogenetic contexts provides insights on speciation mechanisms and possible responses to future climatic change. Large-scale phyloclimatic studies on the megadiverse Neotropics, where biomes with contrasting vegetation types occur in narrow contact, are rare. We integrate ecological and biogeographic data with phylogenetic comparative methods, to investigate the relative roles of biogeographic events and niche divergence and conservatism on the diversification of the lizard genus Kentropyx Spix, 1825 (Squamata: Teiidae), distributed in South American rainforests and savannas. Using five molecular markers, we estimated a dated species tree, which recovered three clades coincident with previously proposed species groups diverging during the mid-Miocene. Biogeography reconstruction indicates a role of successive dispersal events from an ancestral range in the Brazilian Shield and western Amazonia. Ancestral reconstruction of climatic tolerances and niche overlap metrics indicates a trend of conservatism during the diversification of groups from the Amazon Basin and Guiana Shield, and a strong signal of niche divergence in the Brazilian Shield savannas. Our results suggest that climatic-driven divergence at dynamic forest-savanna borders might have resulted in adaptation to new environmental niches, promoting habitat shifts and shaping speciation patterns of Neotropical lizards. Dispersal and ecological divergence could have a more important role in Neotropical diversification than previously thought.
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Zornosa-Torres C, Augusto-Alves G, Lyra ML, Silva Júnior JCD, Garcia PC, Leite F, Verdade V, Rodrigues MT, Gasparini JL, Haddad CF, Toledo LF. Anurans of the Caparaó National Park and surroundings, southeast Brazil. BIOTA NEOTROPICA 2020. [DOI: 10.1590/1676-0611-bn-2019-0882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract The Atlantic Forest (AF) is one of the biodiversity hotspots of the world, and the most fragmented biome of Brazil. This biome includes different phytophysiognomies, as riparian, slope, cloudy forests, and grasslands. Such complexity, allied to huge latitudinal and high elevational range, provides diverse habitats and conditions for amphibian speciation. As a result, there are over 600 amphibian species known to occur in the AF. Within this biome the Caparaó National Park (CNP) is relevant, as it includes the highest peak of the biome, the Pico da Bandeira at almost 3,000 m above sea level, as well as different phytophysiognomies as rocky fields and humid forests. In spite of that, its amphibian fauna is still poorly described. We inventoried amphibians at the CNP and surrounding areas from 2016 to 2018 and recorded 47 anuran species, of which two are locally endemic and at least six have not been described yet. Additionally, we compiled data from previous surveys (2004 to 2008) and secondary data from scientific collections. All together, we registered a total of 61 anuran species from 12 families for the CNP and surroundings, placing this area among the 10 amphibian richest sites in the AF. Some of these species are represented by only one or two collected specimens and have not been registered in the CNP since the 1980’s, such as Thoropa lutzi and Hylodes vanzolinii. These species could be examples of population declines or even past local extinctions, highlighting the need of further sampling efforts in that highly biodiverse site.
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Lanna FM, Gehara M, Werneck FP, Fonseca EM, Colli GR, Sites JW, Rodrigues MT, Garda AA. Dwarf geckos and giant rivers: the role of the São Francisco River in the evolution of Lygodactylus klugei (Squamata: Gekkonidae) in the semi-arid Caatinga of north-eastern Brazil. Biol J Linn Soc Lond 2019. [DOI: 10.1093/biolinnean/blz170] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Species diversification can be strongly influenced by geomorphological features, such as mountains, valleys and rivers. Rivers can act as hard or soft barriers to gene flow depending on their size, speed of flow, historical dynamics and regional topographical characteristics. The São Francisco River (SFR) is the largest perennial river in the Caatinga biome in north-eastern Brazil and has been considered a barrier to gene flow and dispersal. Herein, we evaluated the role of the SFR on the evolution of Lygodactylus klugei, a small gecko from the Caatinga. Using a single-locus species delimitation method (generalized mixed Yule coalescent), we defined lineages (haploclades). Subsequently, we evaluated the role of the SFR in structuring genetic diversity in this species using a multilocus approach to quantify migration across margins. We also evaluated genetic structure based on nuclear markers, testing the number of populations found through an assignment test (STRUCTURE) across the species distribution. We recovered two mitochondrial lineages structured with respect to the SFR, but only a single population was inferred from nuclear markers. Given that we detected an influence of the SFR only on mitochondrial markers, we suggest that the current river course has acted as a relatively recent geographical barrier for L. klugei, for ~450 000 years.
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de Sá FP, Haddad CFB, Gray MM, Verdade VK, Thomé MTC, Rodrigues MT, Zamudio KR. Male-male competition and repeated evolution of terrestrial breeding in Atlantic Coastal Forest frogs. Evolution 2019; 74:459-475. [PMID: 31710098 DOI: 10.1111/evo.13879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 10/09/2019] [Accepted: 10/17/2019] [Indexed: 11/28/2022]
Abstract
Terrestrial breeding is a derived condition in frogs, with multiple transitions from an aquatic ancestor. Shifts in reproductive mode often involve changes in habitat use, and these are typically associated with diversification in body plans, with repeated transitions imposing similar selective pressures. We examine the diversification of reproductive modes, male and female body sizes, and sexual size dimorphism (SSD) in the Neotropical frog genera Cycloramphus and Zachaenus, both endemic to the Atlantic rainforest of Brazil. Species in this clade either breed in rocky streams (saxicolous) or in terrestrial environments, allowing us to investigate reproductive habitat shifts. We constructed a multilocus molecular phylogeny and inferred evolutionary histories of reproductive habitats, body sizes, and SSD. The common ancestor was small, saxicolous, and had low SSD. Terrestrial breeding evolved independently three times and we found a significant association between reproductive habitat and SSD, with shifts to terrestrial breeding evolving in correlation with decreases in male body size, but not female body size. Terrestrial breeding increases the availability of breeding sites and results in concealment of amplexus, egg-laying, and parental care, therefore reducing male-male competition at all stages of reproduction. We conclude that correlated evolution of terrestrial reproduction and small males is due to release from intense male-male competition that is typical of exposed saxicolous breeding.
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Brunes TO, da Silva AJ, Marques-Souza S, Rodrigues MT, Pellegrino KC. Not always young: The first vertebrate ancient origin of true parthenogenesis found in an Amazon leaf litter lizard with evidence of mitochondrial haplotypes surfing on the wave of a range expansion. Mol Phylogenet Evol 2019; 135:105-122. [DOI: 10.1016/j.ympev.2019.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/23/2019] [Accepted: 01/26/2019] [Indexed: 10/27/2022]
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Vasconcellos MM, Colli GR, Weber JN, Ortiz EM, Rodrigues MT, Cannatella DC. Isolation by instability: Historical climate change shapes population structure and genomic divergence of treefrogs in the Neotropical Cerrado savanna. Mol Ecol 2019; 28:1748-1764. [DOI: 10.1111/mec.15045] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 01/17/2019] [Accepted: 01/23/2019] [Indexed: 12/30/2022]
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Fouquet A, Ferrier B, Salmona J, Tirera S, Vacher JP, Courtois EA, Gaucher P, Lima JD, Nunes PMS, de Souza SM, Rodrigues MT, Noonan B, de Thoisy B. Phenotypic and life-history diversification in Amazonian frogs despite past introgressions. Mol Phylogenet Evol 2019; 130:169-180. [DOI: 10.1016/j.ympev.2018.09.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 09/15/2018] [Accepted: 09/15/2018] [Indexed: 10/28/2022]
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Graboski R, Arredondo JC, Grazziotin FG, da Silva AAA, Prudente ALC, Rodrigues MT, Bonatto SL, Zaher H. Molecular phylogeny and hemipenial diversity of South American species ofAmerotyphlops(Typhlopidae, Scolecophidia). ZOOL SCR 2018. [DOI: 10.1111/zsc.12334] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zaher H, Yánez-Muñoz MH, Rodrigues MT, Graboski R, Machado FA, Altamirano-Benavides M, Bonatto SL, Grazziotin FG. Origin and hidden diversity within the poorly known Galápagos snake radiation (Serpentes: Dipsadidae). SYST BIODIVERS 2018. [DOI: 10.1080/14772000.2018.1478910] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Peloso PL, Oliveira RMD, Sturaro MJ, Rodrigues MT, Lima-Filho GR, Bitar YO, Wheeler WC, Aleixo A. Phylogeny of Map Tree Frogs, Boana semilineata Species Group, with a New Amazonian Species (Anura: Hylidae). SOUTH AMERICAN JOURNAL OF HERPETOLOGY 2018. [DOI: 10.2994/sajh-d-17-00037.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Sturaro MJ, Rodrigues MT, Colli GR, Knowles LL, Avila-Pires TC. Integrative taxonomy of the lizards Cercosaura ocellata species complex (Reptilia: Gymnophthalmidae). ZOOL ANZ 2018. [DOI: 10.1016/j.jcz.2018.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lanna FM, Werneck FP, Gehara M, Fonseca EM, Colli GR, Sites JW, Rodrigues MT, Garda AA. The evolutionary history of Lygodactylus lizards in the South American open diagonal. Mol Phylogenet Evol 2018; 127:638-645. [PMID: 29906606 DOI: 10.1016/j.ympev.2018.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 04/05/2018] [Accepted: 06/06/2018] [Indexed: 11/16/2022]
Abstract
The Pleistocenic Arc Hypothesis (PAH) posits that South American Seasonally Dry Tropical Forests (SDTF) were interconnected during Pleistocene glacial periods, enabling the expansion of species ranges that were subsequently fragmented in interglacial periods, promoting speciation. The lizard genus Lygodactylus occurs in Africa, Madagascar, and South America. Compared to the high diversity of African Lygodactylus, only two species are known to occur in South America, L. klugei and L. wetzeli, distributed in SDTFs and the Chaco, respectively. We use a phylogenetic approach based on mitochondrial (ND2) and nuclear (RAG-1) markers covering the known range of South American Lygodactylus to investigate (i) if they are monophyletic relative to their African congeners, (ii) if their divergence is congruent with the fragmentation of the PAH, and (iii) if cryptic diversity exists within currently recognized species. Maximum likelihood and Bayesian phylogenetic analyses recovered a well-supported monophyletic South American Lygodactylus, presumably resulting from a single trans-Atlantic dispersal event 29 Mya. Species delimitation analyses supported the existence of five putative species, three of them undescribed. Divergence times among L. klugei and the three putative undescribed species, all endemic to the SDTFs, are not congruent with the fragmentation of the PAH. However, fragmentation of the once broader and continuous SDTFs likely influenced the divergence of L. wetzeli in the Chaco and Lygodactylus sp. 3 (in a SDTF enclave in the Cerrado).
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Sánchez-Pacheco SJ, Torres-Carvajal O, Aguirre-Peñafiel V, Nunes PMS, Verrastro L, Rivas GA, Rodrigues MT, Grant T, Murphy RW. Phylogeny of Riama (Squamata: Gymnophthalmidae), impact of phenotypic evidence on molecular datasets, and the origin of the Sierra Nevada de Santa Marta endemic fauna. Cladistics 2018; 34:260-291. [PMID: 34645080 DOI: 10.1111/cla.12203] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2017] [Indexed: 02/02/2023] Open
Abstract
Riama is the most speciose genus of the Neotropical lizard family Gymnophthalmidae. Its more than 30 montane species occur throughout the northern Andes, the Cordillera de la Costa (CC) in Venezuela, and Trinidad. We present the most comprehensive phylogenetic analysis of Riama to date based on a total evidence (TE) approach and direct optimization of molecular and morphological evidence. Analyses use DNA sequences from four loci and 35 phenotypic characters. The dataset consists of 55 ingroup terminals representing 25 of the 30 currently recognized species of Riama plus five undescribed taxa, including an endemic species from the Sierra Nevada de Santa Marta (SNSM) in Colombia, and 66 outgroup terminals of 47 species. Analysis results in a well-supported hypothesis in which Riama is polyphyletic, with its species falling into three clades. The Tepuian Anadia mcdiarmidi nests within one clade of Riama, and the recently resurrected Pantodactylus nests within Cercosaura. Accordingly, we propose a monophyletic taxonomy that reflects historical relationships. Analysis of character evolution indicates that the presence/absence of prefrontals-a cornerstone of the early genus-level taxonomy of cercosaurines-is optimally explained as having been plesiomorphically present in the most recent common ancestor of Cercosaurinae and lost in that of the immediately less inclusive clade. Multiple independent reversals to present and subsequent returns to absent occur within this clade. To evaluate the impact of phenotypic evidence on our results, we compare our TE results with results obtained from analyses using only molecular data. Although phenotypic evidence comprises only 1.2% of the TE matrix, its inclusion alters both the topology and support values of the clades that do not differ. Finally, current phylogenetic evidence reveals a SNSM-CC-Trinidad-tepuis biogeographical link. We hypothesize that an ancient connection facilitated the exchange of species between the SNSM and the CC.
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Carvalho AL, Rivas LR, Céspedes R, Rodrigues MT. A New Collared Lizard (Tropidurus: Tropiduridae) Endemic to the Western Bolivian Andes and Its Implications for Seasonally Dry Tropical Forests. AMERICAN MUSEUM NOVITATES 2018. [DOI: 10.1206/3896.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gonçalves AI, Gershovich PM, Rodrigues MT, Reis RL, Gomes ME. Human adipose tissue-derived tenomodulin positive subpopulation of stem cells: A promising source of tendon progenitor cells. J Tissue Eng Regen Med 2017; 12:762-774. [PMID: 28593712 DOI: 10.1002/term.2495] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/14/2017] [Accepted: 06/03/2017] [Indexed: 01/05/2023]
Abstract
Cell-based therapies are of particular interest for tendon and ligament regeneration given the low regenerative potential of these tissues. Adipose tissue is an abundant source of stem cells, which may be employed for the healing of tendon lesions. However, human adult multipotent adipose-derived stem cells (hASCs) isolated from the stromal vascular fraction of adipose tissue originate highly heterogeneous cell populations that hinder their use in specific tissue-oriented applications. In this study, distinct subpopulations of hASCs were immunomagnetic separated and their tenogenic differentiation capacity evaluated in the presence of several growth factors (GFs), namely endothelial GF, basic-fibroblast GF, transforming GF-β1 and platelet-derived GF-BB, which are well-known regulators of tendon development, growth and healing. Among the screened hASCs subpopulations, tenomodulin-positive cells were shown to be more promising for tenogenic applications and therefore this subpopulation was further studied, assessing tendon-related markers (scleraxis, tenomodulin, tenascin C and decorin) both at gene and protein level. Additionally, the ability for depositing collagen type I and III forming extracellular matrix structures were weekly assessed up to 28 days. The results obtained indicated that tenomodulin-positive cells exhibit phenotypical features of tendon progenitor cells and can be biochemically induced towards tenogenic lineage, demonstrating that this subset of hASCs can provide a reliable source of progenitor cells for therapies targeting tendon regeneration.
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Sánchez-Pacheco SJ, Nunes PMS, Marques-Souza S, Rodrigues MT, Murphy RW. Formal recognition of the species of Oreosaurus (Reptilia, Squamata, Gymnophthalmidae) from the Sierra Nevada de Santa Marta, Colombia. Zookeys 2017; 691:149-162. [PMID: 29369307 PMCID: PMC5672716 DOI: 10.3897/zookeys.691.13595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 07/11/2017] [Indexed: 11/23/2022] Open
Abstract
Oreosaurus is one of the two genera extracted from the former Riamasensu lato, which was recently recognized as polyphyletic. Oreosaurus is a small clade (five named and two undescribed species) of montane gymnophthalmid lizards and exhibits an exceptional distributional pattern. Its nominal and undescribed species are discontinuously distributed on the Cordillera de la Costa of Venezuela, the tepuis from the Chimantá massif in Venezuela, the highlands of the island of Trinidad, and the Sierra Nevada de Santa Marta in Colombia (SNSM). Herein, we describe the species of Oreosaurus that is endemic to the SNSM. Historically, this species associates with two names that are currently nomina nuda: Proctoporus serranus and P. specularis. Formal nomenclatural recognition of Oreosaurus serranussp. n. renders specularis a permanently unavailable name for this taxon. Oreosaurus serranussp. n. is the sister of all remaining congeners, and differs primarily from them in having only one pair of genial scales, as well as a unique pattern of scutellation. We provide an identification key to the species of Oreosaurus.
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Sturaro MJ, Avila-Pires TCS, Rodrigues MT. Molecular phylogenetic diversity in the widespread lizard Cercosaura ocellata (Reptilia: Gymnophthalmidae) in South America. SYST BIODIVERS 2017. [DOI: 10.1080/14772000.2017.1284913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Prates I, Rivera D, Rodrigues MT, Carnaval AC. A mid‐
P
leistocene rainforest corridor enabled synchronous invasions of the
A
tlantic
F
orest by
A
mazonian anole lizards. Mol Ecol 2016; 25:5174-5186. [DOI: 10.1111/mec.13821] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 08/10/2016] [Accepted: 08/22/2016] [Indexed: 11/26/2022]
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Jungfer KH, Verdade VK, Faivovich J, Rodrigues MT. A new species of spiny-backed treefrog (Osteocephalus) from Central Amazonian Brazil (Amphibia: Anura: Hylidae). Zootaxa 2016; 4114:171-81. [PMID: 27395123 DOI: 10.11646/zootaxa.4114.2.6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Indexed: 11/04/2022]
Abstract
A new species of treefrog of the genus Osteocephalus is described from the Rio Abacaxis, a southern tributary of the Amazonas in the state of Amazonas, Brazil. This member of the O. buckleyi group is characterized by green dorsal colouration with irregular blotches of various shades of brown, light venter with tan spots and bold dark markings on the posterior surfaces of the thighs. It can be distinguished from its closest relative, O. helenae from the same general area, by the lack of an axillary membrane, a few indistinct tubercles on the proximal segment of Finger IV and single ulnar tubercles.
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Goicoechea N, Frost DR, De la Riva I, Pellegrino KCM, Sites J, Rodrigues MT, Padial JM. Molecular systematics of teioid lizards (Teioidea/Gymnophthalmoidea: Squamata) based on the analysis of 48 loci under tree‐alignment and similarity‐alignment. Cladistics 2016; 32:624-671. [DOI: 10.1111/cla.12150] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2015] [Indexed: 02/02/2023] Open
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Carvalho AL, Sena MA, Peloso PL, Machado FA, Montesinos R, Silva HR, Campbell G, Rodrigues MT. A NewTropidurus(Tropiduridae) from the Semiarid Brazilian Caatinga: Evidence for Conflicting Signal between Mitochondrial and Nuclear Loci Affecting the Phylogenetic Reconstruction of South American Collared Lizards. AMERICAN MUSEUM NOVITATES 2016. [DOI: 10.1206/3852.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Guarnizo CE, Werneck FP, Giugliano LG, Santos MG, Fenker J, Sousa L, D’Angiolella AB, dos Santos AR, Strüssmann C, Rodrigues MT, Dorado-Rodrigues TF, Gamble T, Colli GR. Cryptic lineages and diversification of an endemic anole lizard (Squamata, Dactyloidae) of the Cerrado hotspot. Mol Phylogenet Evol 2016; 94:279-89. [DOI: 10.1016/j.ympev.2015.09.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/06/2015] [Accepted: 09/08/2015] [Indexed: 01/17/2023]
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Oliveira EF, Gehara M, São-Pedro VA, Chen X, Myers EA, Burbrink FT, Mesquita DO, Garda AA, Colli GR, Rodrigues MT, Arias FJ, Zaher H, Santos RML, Costa GC. Speciation with gene flow in whiptail lizards from a Neotropical xeric biome. Mol Ecol 2015; 24:5957-75. [PMID: 26502084 DOI: 10.1111/mec.13433] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/15/2015] [Accepted: 10/21/2015] [Indexed: 11/29/2022]
Abstract
Two main hypotheses have been proposed to explain the diversification of the Caatinga biota. The riverine barrier hypothesis (RBH) claims that the São Francisco River (SFR) is a major biogeographic barrier to gene flow. The Pleistocene climatic fluctuation hypothesis (PCH) states that gene flow, geographic genetic structure and demographic signatures on endemic Caatinga taxa were influenced by Quaternary climate fluctuation cycles. Herein, we analyse genetic diversity and structure, phylogeographic history, and diversification of a widespread Caatinga lizard (Cnemidophorus ocellifer) based on large geographical sampling for multiple loci to test the predictions derived from the RBH and PCH. We inferred two well-delimited lineages (Northeast and Southwest) that have diverged along the Cerrado-Caatinga border during the Mid-Late Miocene (6-14 Ma) despite the presence of gene flow. We reject both major hypotheses proposed to explain diversification in the Caatinga. Surprisingly, our results revealed a striking complex diversification pattern where the Northeast lineage originated as a founder effect from a few individuals located along the edge of the Southwest lineage that eventually expanded throughout the Caatinga. The Southwest lineage is more diverse, older and associated with the Cerrado-Caatinga boundaries. Finally, we suggest that C. ocellifer from the Caatinga is composed of two distinct species. Our data support speciation in the presence of gene flow and highlight the role of environmental gradients in the diversification process.
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