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Pesquisa : B01.050.150.900.090.180 [Categoria DeCS]
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[PMID]:29389966
[Au] Autor:Reyes-Velasco J; Manthey JD; Bourgeois Y; Freilich X; Boissinot S
[Ad] Endereço:New York University Abu Dhabi, Saadiyat Island, Abu Dhabi, United Arab Emirates.
[Ti] Título:Revisiting the phylogeography, demography and taxonomy of the frog genus Ptychadena in the Ethiopian highlands with the use of genome-wide SNP data.
[So] Source:PLoS One;13(2):e0190440, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Understanding the diversification of biological lineages is central to evolutionary studies. To properly study the process of speciation, it is necessary to link micro-evolutionary studies with macro-evolutionary mechanisms. Micro-evolutionary studies require proper sampling across a taxon's range to adequately infer genetic diversity. Here we use the grass frogs of the genus Ptychadena from the Ethiopian highlands as a model to study the process of lineage diversification in this unique biodiversity hotspot. We used thousands of genome-wide SNPs obtained from double digest restriction site associated DNA sequencing (ddRAD-seq) in populations of the Ptychadena neumanni species complex from the Ethiopian highlands in order to infer their phylogenetic relationships and genetic structure, as well as to study their demographic history. Our genome-wide phylogenetic study supports the existence of approximately 13 lineages clustered into 3 species groups. Our phylogenetic and phylogeographic reconstructions suggest that those endemic lineages diversified in allopatry, and subsequently specialized to different habitats and elevations. Demographic analyses point to a continuous decrease in the population size across the majority of lineages and populations during the Pleistocene, which is consistent with a continuous period of aridification that East Africa experienced since the Pliocene. We discuss the taxonomic implications of our analyses and, in particular, we warn against the recent practice to solely use Bayesian species delimitation methods when proposing taxonomic changes.
[Mh] Termos MeSH primário: Anuros/classificação
Genoma
Filogeografia
Polimorfismo de Nucleotídeo Único
[Mh] Termos MeSH secundário: Animais
Anuros/genética
Código de Barras de DNA Taxonômico
DNA Mitocondrial/genética
Ecossistema
Etiópia
Evolução Molecular
Reação em Cadeia da Polimerase
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180202
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190440


  2 / 20889 MEDLINE  
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[PMID]:29381750
[Au] Autor:Guerra V; Llusia D; Gambale PG; Morais AR; Márquez R; Bastos RP
[Ad] Endereço:Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais (PEA), Universidade Estadual de Maringá (UEM), CEP: 87020-900, Maringá, Paraná, Brazil.
[Ti] Título:The advertisement calls of Brazilian anurans: Historical review, current knowledge and future directions.
[So] Source:PLoS One;13(1):e0191691, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Advertisement calls are often used as essential basic information in studies of animal behaviour, ecology, evolution, conservation, taxonomy or biodiversity inventories. Yet the description of this type of acoustic signals is far to be completed, especially in tropical regions, and is frequently non-standardized or limited in information, restricting the application of bioacoustics in science. Here we conducted a scientometric review of the described adverstisement calls of anuran species of Brazil, the world richest territory in anurans, to evaluate the amount, standard and trends of the knowledge on this key life-history trait and to identify gaps and directions for future research strategies. Based on our review, 607 studies have been published between 1960 to 2016 describing the calls of 719 Brazilian anuran species (68.8% of all species), a publication rate of 10.6 descriptions per year. From each of these studies, thirty-one variables were recorded and examined with descriptive and inferential statistics. In spite of an exponential rise over the last six decades in the number of studies, described calls, and quantity of published metadata, as revealed by regression models, clear shortfalls were identified with regard to anuran families, biomes, and categories of threat. More than 55% of these species belong to the two richest families, Hylidae or Leptodactylidae. The lowest percentage of species with described calls corresponds to the most diverse biomes, namely Atlantic Forest (65.1%) and Amazon (71.5%), and to the IUCN categories of threat (56.8%), relative to the less-than-threatened categories (74.3%). Moreover, only 52.3% of the species have some of its calls deposited in the main scientific sound collections. Our findings evidence remarkable knowledge gaps on advertisement calls of Brazilian anuran species, emphasizing the need of further efforts in standardizing and increasing the description of anuran calls for their application in studies of the behaviour, ecology, biogeography or taxonomy of the species.
[Mh] Termos MeSH primário: Comunicação Animal
Anuros/fisiologia
[Mh] Termos MeSH secundário: Animais
Brasil
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; REVIEW
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180131
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191691


  3 / 20889 MEDLINE  
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[PMID]:28457503
[Au] Autor:Shiraishi Y; Ogawa T; Suzuki T; Iwai M; Kusano M; Zaitsu K; Kondo F; Ishii A; Seno H
[Ad] Endereço:Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan; Department of Pharmacy, Fujita Health University Hospital, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan.
[Ti] Título:Simultaneous quantification of batrachotoxin and epibatidine in plasma by ultra-performance liquid chromatography/tandem mass spectrometry.
[So] Source:Leg Med (Tokyo);25:1-5, 2017 Mar.
[Is] ISSN:1873-4162
[Cp] País de publicação:Ireland
[La] Idioma:eng
[Ab] Resumo:An ultra-performance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS) method was developed and validated for the simultaneous quantification of batrachotoxin and epibatidine in plasma. Plasma samples were pretreated by liquid-liquid extraction with acetonitrile and methanol. The toxins were separated on a reversed phase C18-column (2.1mm×50mm, 1.7µm) using a formic acid/acetonitrile gradient elution. Quantification was carried out by mass chromatography with each product ion referenced against midazolam-d as an internal standard (IS). The two toxins and the IS were separated within 2min. The calibration curves for the two toxins spiked into human plasma showed good linearities in the range from 2.5 to 250ng/mL. The detection limits were estimated to be 0.5ng/mL for batrachotoxin and 1ng/mL for epibatidine with a signal-to-noise ratio of 3:1. Overall recoveries ranged from 69.6% to 98.2%, and no significant matrix effects were observed. The intra- and interday accuracies were 94.7-102.3%, and the precisions were 1.0-10.3%. This method was successfully applied for the quantification of batrachotoxin and epibatidine in rat plasma samples taken after intraperitoneal administration of the toxins. This is the first report to use UPLC-MS/MS to simultaneously quantify batrachotoxin and epibatidine in plasma samples.
[Mh] Termos MeSH primário: Analgésicos não Entorpecentes/sangue
Batraquiotoxinas/sangue
Compostos Bicíclicos Heterocíclicos com Pontes/sangue
Cromatografia Líquida de Alta Pressão/métodos
Piridinas/sangue
Espectrometria de Massas em Tandem/métodos
[Mh] Termos MeSH secundário: Analgésicos não Entorpecentes/química
Animais
Anuros
Batraquiotoxinas/química
Compostos Bicíclicos Heterocíclicos com Pontes/química
Japão
Piridinas/química
Ratos
Ratos Wistar
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Analgesics, Non-Narcotic); 0 (Batrachotoxins); 0 (Bridged Bicyclo Compounds, Heterocyclic); 0 (Pyridines); M6K314F1XX (epibatidine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE


  4 / 20889 MEDLINE  
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[PMID]:29181899
[Au] Autor:Suwannapoom C; Yuan ZY; Jiang K; Yan F; Gao W; Che J
[Ad] Endereço:Division of Fishery, School of Agriculture and Natural Resources, University of Phayao, Phayao 56000, Thailand.
[Ti] Título:A new species of rain-pool frog (Dicroglossidae: ) from western Thailand.
[So] Source:Zool Res;38(5):243-250, 2017 Sep 18.
[Is] ISSN:2095-8137
[Cp] País de publicação:China
[La] Idioma:eng
[Ab] Resumo:We describe a new species, ., based on a series of specimens collected from Ban Tha Khanun, Thong Pha Phum District, Kanchanaburi Province, Thailand. The new species is easily distinguished from its congeners by morphological and molecular data, and can be diagnosed by the following characters: (1) small size (adult male snout-vent length (SVL) 33.5 mm; female SVL 40.0-40.9 mm); (2) tympanum small, discernible but unclear; (3) poorly developed toe webbing; (4) no lateral line system in adults; (5) characteristic "Fejervaryan" lines present in females; and (6) femoral glands absent. Molecular phylogenetic analysis of mitochondrial 16S rRNA further supports it as a distinct lineage and distinguishes it from its congeners for which sequences are available.
[Mh] Termos MeSH primário: Anuros/anatomia & histologia
Anuros/classificação
[Mh] Termos MeSH secundário: Distribuição Animal
Animais
Anuros/genética
Anuros/fisiologia
Feminino
Masculino
Filogenia
RNA Ribossômico 16S/genética
Especificidade da Espécie
Tailândia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 16S)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171129
[St] Status:MEDLINE
[do] DOI:10.24272/j.issn.2095-8137.2017.043


  5 / 20889 MEDLINE  
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[PMID]:28963082
[Au] Autor:Heinicke MP; Lemmon AR; Lemmon EM; McGrath K; Hedges SB
[Ad] Endereço:Department of Natural Sciences, University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, MI 48128, USA. Electronic address: heinicke@umich.edu.
[Ti] Título:Phylogenomic support for evolutionary relationships of New World direct-developing frogs (Anura: Terraranae).
[So] Source:Mol Phylogenet Evol;118:145-155, 2018 Jan.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Phylogenomic approaches have proven able to resolve difficult branches in the tree of life. New World direct-developing frogs (Terraranae) represent a large evolutionary radiation in which interrelationships at key points in the phylogeny have not been adequately determined, affecting evolutionary, biogeographic, and taxonomic interpretations. We employed anchored hybrid enrichment to generate a data set containing 389 loci and >600,000 nucleotide positions for 30 terraranan and several outgroup frog species encompassing all major lineages in the clade. Concatenated maximum likelihood and coalescent species-tree approaches recover nearly identical topologies with strong support for nearly all relationships in the tree. These results are similar to previous phylogenetic results but provide additional resolution at short internodes. Among taxa whose placement varied in previous analyses, Ceuthomantis is shown to be the sister taxon to all other terraranans, rather than deeply embedded within the radiation, and Strabomantidae is monophyletic rather than paraphyletic with respect to Craugastoridae. We present an updated taxonomy to reflect these results, and describe a new subfamily for the genus Hypodactylus.
[Mh] Termos MeSH primário: Anuros/classificação
Anuros/genética
Genômica
Filogenia
[Mh] Termos MeSH secundário: Animais
Funções Verossimilhança
Análise de Sequência de DNA
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171001
[St] Status:MEDLINE


  6 / 20889 MEDLINE  
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[PMID]:28919503
[Au] Autor:Caviedes-Solis IW; Nieto-Montes de Oca A
[Ad] Endereço:Museo de Zoología, Facultad de Ciencias, Universidad Nacional Autónoma de México, México Distrito Federal 04510, Mexico. Electronic address: itzuecs@uw.edu.
[Ti] Título:A multilocus phylogeny of the genus Sarcohyla (Anura: Hylidae), and an investigation of species boundaries using statistical species delimitation.
[So] Source:Mol Phylogenet Evol;118:184-193, 2018 Jan.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The genus Sarcohyla is composed by 24 species endemic to México. Despite the large number of phylogenetic studies focusing on the family Hylidae, the relationships among the species of Sarcohyla are still poorly known, and the scarce numbers of specimens and tissue samples available for some of the species has hampered an appropriate phylogenetic analysis. We present the most comprehensive molecular phylogenetic study of Sarcohyla to date. We included 17 species of the genus Sarcohyla using data from two mitochondrial (ND1 and 12S) and three nuclear genes (Rag-1, Rhod, and POMc). We performed phylogenetic analyses using Bayesian inference, and the absence of conflicts with strong support between the separate gene trees indicates that incomplete lineage sorting and/or introgressive hybridization are negligible. A coalescent-based species-tree analysis of the four independent loci (three nuclear genes+mtDNA) mostly supports the same species-level relationships as the analysis of the concatenated data. By including new samples from additional species and localities, we find that: (1) the widely distributed species S. bistincta is a complex of at least three species, (2) another undescribed species exists in the group, (3) the species S. ephemera is not valid and it corresponds to a junior synonym of S. calthula. In addition, we conducted marginal likelihood estimation and used Bayes factors to test alternative species delimitation models for S. bistincta, the most widespread nominal species in the group. Our findings support three independent lineages of S. bistincta group, which are paraphyletic with respect to S. pentheter and S. calthula.
[Mh] Termos MeSH primário: Anuros/classificação
Loci Gênicos
Filogenia
Estatística como Assunto
[Mh] Termos MeSH secundário: Animais
Anuros/genética
Teorema de Bayes
DNA Mitocondrial/genética
Geografia
Funções Verossimilhança
México
Modelos Biológicos
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170919
[St] Status:MEDLINE


  7 / 20889 MEDLINE  
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[PMID]:29401573
[Au] Autor:Kirillova NY; Kirillov AA
[Ti] Título:[The number of larvae and period of its production of Cosmocerca Ornata females (Nematoda: Cosmocercidae)].
[So] Source:Parazitologiia;51(1):22-37, 2017 Jan-Feb.
[Is] ISSN:0031-1847
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:The number of larvae in the Cosmocerca ornata (Dujardin, 1845) females from marsh frogs in vivo and period of larvae production of nematodes in vitro was studied. The number of larvae in females of nematodes and quantity of born larvae depend on the size of parasites. The largest C. ornata females had the highest number of larvae and the longest period of larvae production. The nematode sizes in its turn depends on density of infrapopulation of C. ornata and ambient temperature. The dependence of a number of the C. ornata larvae on the host age and sex and on a season of the year was revealed. Different phenotypes of amphibians showed no influence on the number of larvae inside nematode females. In the experiment C. ornata females remained viable up to 8 days, producing larvae up to 7 days. The optimum temperature for the larvae production constituted 24­28 °C. At a temperature of 12 °C and lower the nematode larvae output from females was stopped.
[Mh] Termos MeSH primário: Anuros/parasitologia
Ascaridídios/fisiologia
Larva/fisiologia
[Mh] Termos MeSH secundário: Animais
Ascaridídios/patogenicidade
Tamanho Corporal
Tamanho da Ninhada
Feminino
Larva/patogenicidade
Fenótipo
Federação Russa
Estações do Ano
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180206
[St] Status:MEDLINE


  8 / 20889 MEDLINE  
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[PMID]:29324824
[Au] Autor:Leary CJ; Ralicki HF; Laurencio D; Crocker-Buta S; Malone JH
[Ad] Endereço:University of Mississippi, Department of Biology, University, Mississippi, United States of America.
[Ti] Título:Assessing the links among environmental contaminants, endocrinology, and parasites to understand amphibian declines in montane regions of Costa Rica.
[So] Source:PLoS One;13(1):e0191183, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Amphibians inhabiting montane riparian zones in the Neotropics are particularly vulnerable to decline, but the reasons are poorly understood. Because environmental contaminants, endocrine disruption, and pathogens often figure prominently in amphibian declines it is imperative that we understand how these factors are potentially interrelated to affect montane populations. One possibility is that increased precipitation associated with global warming promotes the deposition of contaminants in montane regions. Increased exposure to contaminants, in turn, potentially elicits chronic elevations in circulating stress hormones that could contribute to montane population declines by compromising resistance to pathogens and/or production of sex steroids regulating reproduction. Here, we test this hypothesis by examining contaminant levels, stress and sex steroid levels, and nematode abundances in male drab treefrogs, Smilisca sordida, from lowland and montane populations in Costa Rica. We found no evidence that montane populations were more likely to possess contaminants (i.e., organochlorine, organophosphate and carbamate pesticides or benzidine and chlorophenoxy herbicides) than lowland populations. We also found no evidence of elevational differences in circulating levels of the stress hormone corticosterone, estradiol or progesterone. However, montane populations possessed lower androgen levels, hosted more nematode species, and had higher nematode abundances than lowland populations. Although these results suggested that nematodes contributed to lower androgens in montane populations, we were unable to detect a significant inverse relationship between nematode abundance and androgen level. Our results suggest that montane populations of this species are not at greater risk of exposure to contaminants or chronic stress, but implicate nematodes and compromised sex steroid levels as potential threats to montane populations.
[Mh] Termos MeSH primário: Anuros/parasitologia
Disruptores Endócrinos/toxicidade
Poluentes Ambientais/toxicidade
[Mh] Termos MeSH secundário: Animais
Anuros/sangue
Anuros/fisiologia
Corticosterona/sangue
Costa Rica
Disruptores Endócrinos/metabolismo
Glândulas Endócrinas/efeitos dos fármacos
Glândulas Endócrinas/fisiopatologia
Poluentes Ambientais/metabolismo
Aquecimento Global
Hormônios Esteroides Gonadais/sangue
Interações Hospedeiro-Parasita
Masculino
Nematoides/isolamento & purificação
Nematoides/patogenicidade
Dinâmica Populacional
Estresse Fisiológico
Clima Tropical/efeitos adversos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Endocrine Disruptors); 0 (Environmental Pollutants); 0 (Gonadal Steroid Hormones); W980KJ009P (Corticosterone)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180112
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191183


  9 / 20889 MEDLINE  
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[PMID]:29320551
[Au] Autor:Navarro-Lozano A; Sánchez-Domene D; Rossa-Feres DC; Bosch J; Sawaya RJ
[Ad] Endereço:Departamento de Zoologia e Botânica. Universidade Estadual Paulista, São José do Rio Preto, São Paulo, Brazil.
[Ti] Título:Are oral deformities in tadpoles accurate indicators of anuran chytridiomycosis?
[So] Source:PLoS One;13(1):e0190955, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We evaluated the use of oral deformities as reliable proxies for determining Batrachochytrium dendrobatidis (Bd) infection in tadpoles of six anuran species of the Atlantic Forest in southeastern Brazil. We examined oral discs of 2156 tadpoles of six species of anurans collected in 2016: Aplastodiscus albosignatus, Boana albopunctata, Boana faber, Scinax hayii, Crossodactylus caramaschii, and Physalaemus cuvieri. Three oral deformities were recognized: lack of keratinization only in upper and/or lower jaw sheaths, lack of keratinization only in upper or lower tooth rows, and both deformities together. A subsample composed of all the individuals possessing oral deformities (N = 195) plus randomly selected individuals without oral deformities (N = 184) were tested for Bd via qPCR. Oral deformities were observed in all six species, but only five were infected with Bd. Since we found that dekeratinization of tooth rows was not associated with the presence of Bd in any of the studied species we used a new proxy (jaw sheaths dekeratinization with or without dekeratinization in tooth rows: JSD-proxy) for Bd detection. Our results showed a nonrandom relationship between Bd infection and JSD-proxy in three species of the family Hylidae. However, the use of JSD-proxy for Bd detection in these species resulted in up to 30.8% false positives and up to 29.3% false negatives. The use of the JSD-proxy in species for which no relationship was found reached 100% of false positives. We conclude that the use of oral dekeratinization as a generalized proxy for Bd detection in tadpoles should not be used as a single diagnosis technique.
[Mh] Termos MeSH primário: Anuros/microbiologia
Quitridiomicetos
Larva/microbiologia
Boca/patologia
Micoses/veterinária
[Mh] Termos MeSH secundário: Animais
Reações Falso-Negativas
Reações Falso-Positivas
Queratinas
Micoses/diagnóstico
Micoses/patologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
68238-35-7 (Keratins)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180205
[Lr] Data última revisão:
180205
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180111
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190955


  10 / 20889 MEDLINE  
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[PMID]:29324790
[Au] Autor:Rebouças R; da Silva HR; Solé M
[Ad] Endereço:Programa de Pós-Graduação em Ciências Biológicas-Biologia Animal, Universidade Federal do Espírito Santo. Avenida Fernando Ferrari, Vitória, Espírito Santo, Brazil.
[Ti] Título:Frog size on continental islands of the coast of Rio de Janeiro and the generality of the Island Rule.
[So] Source:PLoS One;13(1):e0190153, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Island Rule postulated that individuals on islands tend to dwarfism when individuals from mainland populations are large and to gigantism when mainland populations present small individuals. There has been much discussion about this rule, but only few studies were carried out aiming to reveal this pattern for anurans. Our study focused on measuring the size of individuals on islands and to find a possible pattern of size modification for insular anurans. Individuals were collected on continental islands, measured and compared to mainland populations. We selected four species with different natural history aspects during these analyses. Island parameters were compared to size of individuals in order to find an explanation to size modification. Three of the four species presented size shifting on islands. Ololygon trapicheiroi and Adenomera marmorata showed dwarfism, Boana albomarginata showed gigantism and in Thoropa miliaris there was no evident size modification. Allometric analysis also revealed differential modification, which might be a result of different selective pressures on islands in respect of mainland populations. Regression model explained most of the size modification in B. albomarginata, but not for the other species. Our results indicate that previous assumptions, usually proposed for mammals from older islands, do not fit to the anurans studied here. We support the assumption that size modification on islands are population-specific. Hence, in B. albomarginata some factor associated to competition, living area and isolation time might likely be responsible for gigantism on islands.
[Mh] Termos MeSH primário: Anuros/classificação
Tamanho Corporal
[Mh] Termos MeSH secundário: Animais
Brasil
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180129
[Lr] Data última revisão:
180129
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180112
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190153



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