Base de dados : MEDLINE
Pesquisa : B01.050.500.131.617.720.750.750 [Categoria DeCS]
Referências encontradas : 428 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 43 ir para página                         

  1 / 428 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29228938
[Au] Autor:Nishijima S; Nishikawa C; Miyashita T
[Ad] Endereço:Laboratory of Biodiversity Science, School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo, 113-8657, Japan. nishijimash@gmail.com.
[Ti] Título:Habitat modification by invasive crayfish can facilitate its growth through enhanced food accessibility.
[So] Source:BMC Ecol;17(1):37, 2017 Dec 12.
[Is] ISSN:1472-6785
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Invasive ecosystem engineers can facilitate their invasions by modifying the physical environment to improve their own performance, but this positive feedback process has rarely been tested empirically except in sessile organisms. The invasive crayfish Procambarus clarkii is an ecosystem engineer that destroys aquatic macrophytes, which provide a physical refuge for animal prey, and this destruction is likely to enhance vulnerability to predators. Using two series of mesocosm experiments, we tested the hypothesis that the invasive crayfish increases its feeding efficiency on animal prey by reducing submerged macrophytes, thus increasing its individual growth rate in a positive density-dependent manner. RESULTS: In the first experiment, increasing crayfish density reduced both macrophytes and animal prey (dragonfly and chironomid larvae) and, importantly, increased the growth rate of individual crayfish, in accordance with our expectation. In the second experiment, we used artificial macrophytes to clarify whether the physical architecture of macrophytes itself protects animal prey and limits crayfish growth rate. Increasing the artificial macrophyte quantity not only increased the survival of animal prey, but also retarded the crayfish growth rate. CONCLUSIONS: We conclude that macrophytes strengthen bottom-up control of crayfish, but this effect can be relaxed by increasing the density of crayfish via reduction in macrophytes. This positive feedback process may explain the crayfish outbreaks and regime shifts occasionally observed in invaded freshwater ecosystems.
[Mh] Termos MeSH primário: Astacoidea/fisiologia
Ecossistema
Cadeia Alimentar
Espécies Introduzidas
[Mh] Termos MeSH secundário: Animais
Astacoidea/crescimento & desenvolvimento
Chironomidae/crescimento & desenvolvimento
Comportamento Alimentar
Água Doce
Larva/crescimento & desenvolvimento
Odonatos/crescimento & desenvolvimento
Desenvolvimento Vegetal
Densidade Demográfica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[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:171213
[St] Status:MEDLINE
[do] DOI:10.1186/s12898-017-0147-7


  2 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28744900
[Au] Autor:Barnard AA; Fincke OM; McPeek MA; Masly JP
[Ad] Endereço:Ecology & Evolutionary Biology Program, Department of Biology, University of Oklahoma, Norman, Oklahoma.
[Ti] Título:Mechanical and tactile incompatibilities cause reproductive isolation between two young damselfly species.
[So] Source:Evolution;71(10):2410-2427, 2017 10.
[Is] ISSN:1558-5646
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:External male reproductive structures have received considerable attention as a cause of reproductive isolation (RI), because the morphology of these structures often evolves rapidly between populations. This rapid evolution presents the potential for mechanical incompatibilities with heterospecific female structures during mating and could thus prevent interbreeding between nascent species. Although such mechanical incompatibilities have received little empirical support as a common cause of RI, the potential for mismatch of reproductive structures to cause RI due to incompatible species-specific tactile cues has not been tested. We tested the importance of mechanical and tactile incompatibilities in RI between Enallagma anna and E. carunculatum, two damselfly species that diverged within the past ∼250,000 years and currently hybridize in a sympatric region. We quantified 19 prezygotic and postzygotic RI barriers using both naturally occurring and laboratory-reared damselflies. We found incomplete mechanical isolation between the two pure species and between hybrid males and pure species females. Interestingly, in mating pairs for which mechanical isolation was incomplete, females showed greater resistance and refusal to mate with hybrid or heterospecific males compared to conspecific males. This observation suggests that tactile incompatibilities involving male reproductive structures can influence female mating decisions and form a strong barrier to gene flow in early stages of speciation.
[Mh] Termos MeSH primário: Odonatos/genética
Reprodução
Isolamento Reprodutivo
[Mh] Termos MeSH secundário: Animais
Feminino
Genitália Masculina/anatomia & histologia
Genitália Masculina/fisiologia
Hibridização Genética
Masculino
Preferência de Acasalamento Animal
Odonatos/fisiologia
Simpatria
Tato
[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:170727
[St] Status:MEDLINE
[do] DOI:10.1111/evo.13315


  3 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29329292
[Au] Autor:Feindt W; Oppenheim SJ; DeSalle R; Goldstein PZ; Hadrys H
[Ad] Endereço:University of Veterinary Medicine Hannover, ITZ-Division of Ecology and Evolution, Hannover, Germany.
[Ti] Título:Transcriptome profiling with focus on potential key genes for wing development and evolution in Megaloprepus caerulatus, the damselfly species with the world's largest wings.
[So] Source:PLoS One;13(1):e0189898, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The evolution, development and coloration of insect wings remains a puzzling subject in evolutionary research. In basal flying insects such as Odonata, genomic research regarding bauplan evolution is still rare. Here we focus on the world's largest odonate species-the "forest giant" Megaloprepus caerulatus, to explore its potential for looking deeper into the development and evolution of wings. A recently discovered cryptic species complex in this genus previously considered monotypic is characterized by morphological differences in wing shape and color patterns. As a first step toward understanding wing pattern divergence and pathways involved in adaptation and speciation at the genomic level, we present a transcriptome profiling of M. caerulatus using RNA-Seq and compare these data with two other odonate species. The de novo transcriptome assembly consists of 61,560 high quality transcripts and is approximately 93% complete. For almost 75% of the identified transcripts a possible function could be assigned: 48,104 transcripts had a hit to an InterPro protein family or domain, and 28,653 were mapped to a Gene Ontology term. In particular, we focused on genes related to wing development and coloration. The comparison with two other species revealed larva-specific genes and a conserved 'core' set of over 8,000 genes forming orthologous clusters with Ischnura elegans and Ladona fulva. This transcriptome may provide a first point of reference for future research in odonates addressing questions surrounding the evolution of wing development, wing coloration and their role in speciation.
[Mh] Termos MeSH primário: Evolução Biológica
Perfilação da Expressão Gênica
Odonatos/genética
Asas de Animais/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180210
[Lr] Data última revisão:
180210
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180113
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189898


  4 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28902918
[Au] Autor:Johansson F; Halvarsson P; Mikolajewski DJ; Höglund J
[Ad] Endereço:Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden.
[Ti] Título:Phylogeography and larval spine length of the dragonfly Leucorhinia dubia in Europe.
[So] Source:PLoS One;12(9):e0184596, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Presence or absence of predators selects for different kind of morphologies. Hence, we expect variation in traits that protect against predators to vary over geographical areas where predators vary in past and present abundance. Abdominal larval spines in dragonfly larvae provide protection against fish predators. We studied geographical variation in larval spine length of the dragonfly Leucorrhinia dubia across Western Europe using a phylogenetic approach. Larvae were raised in a common garden laboratory experiment in the absence of fish predators. Results show that larvae from northern Europe (Sweden and Finland) had significantly longer larval spines compared to larvae from western and central Europe. A phylogeny based on SNP data suggests that short larval spines is the ancestral stage in the localities sampled in this study, and that long spines have evolved in the Fenno-Scandian clade. The role of predators in shaping the morphological differences among the sampled localities is discussed.
[Mh] Termos MeSH primário: Odonatos/fisiologia
Filogeografia
[Mh] Termos MeSH secundário: Animais
Europa (Continente)
Larva/anatomia & histologia
Larva/crescimento & desenvolvimento
Larva/fisiologia
Odonatos/anatomia & histologia
Odonatos/crescimento & desenvolvimento
Polimorfismo de Nucleotídeo Único
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171024
[Lr] Data última revisão:
171024
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170914
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184596


  5 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28886032
[Au] Autor:May ML; Gregoire JA; Gregoire SM; Lubertazzi MA; Matthews JH
[Ad] Endereço:Department of Entomology, Rutgers University, New Brunswick, NJ, United States of America.
[Ti] Título:Emergence phenology, uncertainty, and the evolution of migratory behavior in Anax junius (Odonata: Aeshnidae).
[So] Source:PLoS One;12(9):e0183508, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Mass migrations by Odonata, although less studied than those of Monarch butterflies and plague locusts, have provoked comment and study for many years. Relatively recently, increasing interest in dragonflies, supported by new technologies, has resulted in more detailed knowledge of the species involved, behavioral mechanisms, and geographic extent. In this paper we examine, in four independent but complementary studies, how larval habitat and emergence phenology interact with climate to shape the evolution of migratory strategy in Anax junius, a common species throughout much of the eastern United States and southern Canada. In brief, we argue that fish predation on larvae, coupled with the need for ample emergent vegetation for oviposition and adult eclosion, dictates that larval development and survival is optimal in ponds that are neither permanent nor extremely ephemeral. Coupled with annual variation in regional weather and winters in much of their range too cold for adult survival, conditions facing newly emerged A. junius may unpredictably favor either local reproduction or long-distance movement to more favorable areas. Both temperature and hydroperiod tend to favor local reproduction early in the adult activity period and migration later, so late emerging adults are more likely to migrate. No single pond is always predictably suitable or unsuitable, however, so ovipositing females also may spread the risk to their offspring by ovipositing at multiple sites that, for migrants, may be distributed over very long distances.
[Mh] Termos MeSH primário: Odonatos/fisiologia
[Mh] Termos MeSH secundário: Migração Animal/fisiologia
Animais
Canadá
Ecossistema
Feminino
Larva/fisiologia
Oviposição/fisiologia
Temperatura Ambiente
Estados Unidos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170909
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0183508


  6 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28864902
[Au] Autor:Sushchik NN; Popova ON; Makhutova ON; Gladyshev MI
[Ad] Endereço:Institute of Biophysics, Krasnoyarsk Research Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia.
[Ti] Título:Fatty acid composition of odonate's eyes.
[So] Source:Dokl Biochem Biophys;475(1):280-282, 2017 Jul.
[Is] ISSN:1608-3091
[Cp] País de publicação:Russia (Federation)
[La] Idioma:eng
[Ab] Resumo:We have studied the fatty acid composition of eyes of amphibiotic insects, namely, the odonate Sympetrum flaveolum. The main polyunsaturated fatty acid of odonate's eyes has been found to be 20:5n-3 (eicosapentaenoic fatty acid, EPA) rather than 18:2n-6 and 18:3n-3, which usually dominate in eyes of terrestrial insects, or 22:6n-3, which dominates in eyes of vertebrates. The prevalence of EPA in odonate's eyes probably provides a more effective transmission of light signal in this animal compared to terrestrial insects. It is important for odonates because vision plays a decisive role in finding and catching prey.
[Mh] Termos MeSH primário: Olho/química
Ácidos Graxos/química
Odonatos/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fatty Acids)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171113
[Lr] Data última revisão:
171113
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170903
[St] Status:MEDLINE
[do] DOI:10.1134/S1607672917040093


  7 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28779428
[Au] Autor:Nasirian H; Irvine KN
[Ad] Endereço:Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, P.O. Box 6446-14155, Tehran, Iran. hanasirian@yahoo.com.
[Ti] Título:Odonata larvae as a bioindicator of metal contamination in aquatic environments: application to ecologically important wetlands in Iran.
[So] Source:Environ Monit Assess;189(9):436, 2017 Sep.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The objectives of this study were twofold: (i) assess the bioaccumulation characteristics of a suite of metals associated with several different species of Odonata and (ii) examine Odonata species richness as a reflection of ecosystem health in two ecologically important wetlands of southwestern Iran, the Shadegan and Hawr Al Azim wetlands. Levels of arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), lead (Pb), and zinc (Zn) were determined using inductively coupled plasma optical emission spectrometry (ICP-OES) in nine different Odonata larva species. Based on these data, biota-sediment accumulation factors (BSAFs) were calculated and generally, it was found that Cr, Cu, Mn, and Zn were being taken up by the Odonata (BSAFs >1). Because of its prevalence in the wetland and its observed ability to take up metals, it is suggested that Ischnura ramburii is an appropriate indicator of ecosystem health for these wetlands with respect to metal contamination. Odonata species richness across all sites was 49, while for the individual sites, the greatest species richness was 26 and the lowest species richness was 13. The species richness value across all sites is quite healthy, given the arid climate of the region.
[Mh] Termos MeSH primário: Monitoramento Ambiental/métodos
Larva/fisiologia
Metais Pesados/análise
Odonatos/fisiologia
Zonas Úmidas
[Mh] Termos MeSH secundário: Animais
Arsênico/análise
Cádmio/análise
Cromo/análise
Cobalto/análise
Cobre/análise
Ecologia
Ecossistema
Irã (Geográfico)
Manganês/análise
Mercúrio/análise
Zinco/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metals, Heavy); 00BH33GNGH (Cadmium); 0R0008Q3JB (Chromium); 3G0H8C9362 (Cobalt); 42Z2K6ZL8P (Manganese); 789U1901C5 (Copper); FXS1BY2PGL (Mercury); J41CSQ7QDS (Zinc); N712M78A8G (Arsenic)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170914
[Lr] Data última revisão:
170914
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170806
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6145-6


  8 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28763495
[Au] Autor:Koroiva R; Pepinelli M; Rodrigues ME; Roque FO; Lorenz-Lemke AP; Kvist S
[Ad] Endereço:Ecology and Conservation Graduate Program, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil.
[Ti] Título:DNA barcoding of odonates from the Upper Plata basin: Database creation and genetic diversity estimation.
[So] Source:PLoS One;12(8):e0182283, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We present a DNA barcoding study of Neotropical odonates from the Upper Plata basin, Brazil. A total of 38 species were collected in a transition region of "Cerrado" and Atlantic Forest, both regarded as biological hotspots, and 130 cytochrome c oxidase subunit I (COI) barcodes were generated for the collected specimens. The distinct gap between intraspecific (0-2%) and interspecific variation (15% and above) in COI, and resulting separation of Barcode Index Numbers (BIN), allowed for successful identification of specimens in 94% of cases. The 6% fail rate was due to a shared BIN between two separate nominal species. DNA barcoding, based on COI, thus seems to be a reliable and efficient tool for identifying Neotropical odonate specimens down to the species level. These results underscore the utility of DNA barcoding to aid specimen identification in diverse biological hotspots, areas that require urgent action regarding taxonomic surveys and biodiversity conservation.
[Mh] Termos MeSH primário: Biodiversidade
Código de Barras de DNA Taxonômico
Bases de Dados Genéticas
Complexo IV da Cadeia de Transporte de Elétrons/genética
Variação Genética
Odonatos/genética
[Mh] Termos MeSH secundário: Animais
Brasil
Geografia
Filogenia
Análise de Sequência de DNA
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
EC 1.9.3.1 (Electron Transport Complex IV)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170802
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0182283


  9 / 428 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28662042
[Au] Autor:Duong TM; Gomez AB; Sherratt TN
[Ad] Endereço:Ottawa-Carleton Institute of Biology, Department of Biology, Carleton University, Ottawa, Canada.
[Ti] Título:Response of adult dragonflies to artificial prey of different size and colour.
[So] Source:PLoS One;12(6):e0179483, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Aposematism is an evolved, cross-species association between a preys' unprofitability and the presence of conspicuous signals. Avian predators have been widely employed to understand the evolution of these warning signals However, insect predators are abundant, diverse, and highly visual foragers that have been shown to be capable of learned aversion. Therefore, it is likely that their behaviour also shapes the nature of anti-predator traits. In this study, we evaluated the rates of attack of a community (13 species) of mature adult dragonflies (Odonata) on artificial prey of varying size (2.5-31 mm lengthwise) and colour pattern (black, black/yellow striped). The relative attack rates of dragonflies on prey increased as prey size decreased, but there was no evidence that the attack rates by dragonflies were affected by prey colour pattern and no evidence for an interaction between colour pattern and size. To investigate prey selection by specific predator species under field conditions, we compared the time to attack distributions of black-painted prey presented to two common dragonflies: Leucorrhinia intacta and the larger, Libellula pulchella. We found that the two dragonfly species, as well as the two sexes, had different foraging responses. L. pulchella was more likely to attack larger prey, and females of both species more likely to attack prey than males. Collectively, our results indicate that dragonflies are highly size selective. However, while the nature of this selectivity varies among dragonfly species, there is little evidence that classic black/yellow warning signals deter attack by these aerial invertebrate predators.
[Mh] Termos MeSH primário: Cor
Odonatos/fisiologia
Comportamento Predatório
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170928
[Lr] Data última revisão:
170928
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170630
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179483


  10 / 428 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28610344
[Au] Autor:Makbun N
[Ad] Endereço:211/5 Moo 4, Takhli, Nakhon Sawan, 60140, Thailand.. noppadon.makbun@gmail.com.
[Ti] Título:A new species of the genus Burmagomphus Williamson (Odonata: Gomphidae) from Northern Thailand.
[So] Source:Zootaxa;4269(1):133-136, 2017 05 19.
[Is] ISSN:1175-5334
[Cp] País de publicação:New Zealand
[La] Idioma:eng
[Ab] Resumo:Burmagomphus chiangmaiensis sp. nov. (holotype: Ban Luang, Chom Thong, Chiang Mai province, Thailand, 890-900 m, 14 v 2012) is described and illustrated. It can be differentiated from its most similar congener, B. apricus from China, by shape of posterior hamulus, yellow trapezoid band on occiput, and larger size.
[Mh] Termos MeSH primário: Odonatos
[Mh] Termos MeSH secundário: Animais
Tamanho Corporal
China
Tamanho do Órgão
Tailândia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170809
[Lr] Data última revisão:
170809
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170615
[St] Status:MEDLINE
[do] DOI:10.11646/zootaxa.4269.1.7



página 1 de 43 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde