|
|
|
| Registros recuperados: 72 | |
|
|
| Albuquerque,Nicolas Lavour de; Brandão,Carlos Roberto Ferreira. |
| In the first paper of this series (Albuquerque & Brandão, 2004) we revised the Vezenyii species group of the exclusively Neotropical solenopsidine (Myrmicinae) ant genus Oxyepoecus. In this closing paper we update distribution information on the Vezenyii group species and revise the other Oxyepoecus species-group (Rastratus). We describe two species (Oxyepoecus myops n. sp. and O. rosai n. sp.) and redescribe previously known species of the group [O. daguerrei (Santschi, 1933), O. mandibularis (Emery, 1913), O. plaumanni Kempf, 1974, O. rastratus Mayr, 1887, and O. reticulatus Kempf, 1974], adding locality records and comments on the meagre biological data of these species. We also present an identification key to Oxyepoecus species based on workers. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Formicidae; Myrmicinae; Solenopsidini; Oxyepoecus; Revision; Rastratus group. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492009002300001 |
| |
|
| |
|
|
| Ulysséa,Mônica A.; Brandão,Carlos R.F.. |
| We describe a new species of Oxyepoecus Santschi, 1926, Oxyepoecus regularis sp. nov., based on workers and a gyne collected in "Caatinga Arbórea" (Arboreal Shrubland) in Milagres and "Mata Seca" (Dry Forest) in Boa Vista do Tupim, both in the state of Bahia, Brazil. The gyne of Oxyepoecus browni Albuquerque & Brandão, 2004, collected in the same leaf litter ant survey, is also described. In addition, we present new records for Oxyepoecus species in Northeastern Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Formicidae; Hymenoptera; Oxyepoecus regularis sp. nov.; Northeastern Brazil; Oxyepoecus browni gyne; Caatinga. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012001400001 |
| |
|
|
| Hasegawa,Motohiro; Sugiura,Shinji; Ito,Masamichi T.; Yamaki,Aska; Hamaguchi,Keiko; Kishimoto,Toshio; Okochi,Isamu. |
| On Chichijima, one of the Ogasawara (Bonin) Islands located in the Western Pacific Ocean, land snails have declined, the suggested cause being predation pressure by an invasive flatworm (Platydemus manokwari). Soil fauna were investigated in areas where the snail survives, and where it has become extinct. Much of the fauna, dominated by introduced earthworms and ants, was undiminished, however, one undescribed but endemic carabid (Badister sp.), which selectively feeds on land snails, was absent in snail-extinct areas. The invasive flatworm P. manokwari has been reported to feed also on the carcasses of earthworms, as well as on live snails, and is therefore expected to occur in most parts of Chichijima Island. Among other groups, the density of isopods... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Badister; Platydemus manokwari; Formicidae; Isopoda; Oligochaeta; Platyhelminthes. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800014 |
| |
|
|
| Assis,Valéria Cristina Barbosa de; Chagas,Pedro Guedes; Marinho,Cidália Gabriela Santos; Fadini,Marcos Antônio Matiello; Delabie,Jacques Hubert Charles; Mendes,Simone Martins. |
| Abstract: The objective of this work was to survey soil ants in Bt and non-Bt maize (Zea mays) crops, and to compare their effect on the soil ant community. Nine pitfall traps, 10 m apart, were installed in a central area (900 m2) of each of the following treatments (2,500 m2): conventional maize; maize modified with the Cry1F, Cry1Ab, and Vip3A proteins; and a native vegetation area. Fortnightly collections were conducted during four periods (complete producing cycles) of the crop, from 2011 to 2013. The number of ant species varied from 25 in Bt maize (Vip 3A) to 58 in Bt maize (Cry 1F). The treatment with conventional maize showed the highest Shannon-Wiener diversity index (H’ = 2.60). Jaccard’s index showed that there is dissimilarity between the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Bioindicators; Formicidae; Myrmicinae; Nontarget arthropods; Soil biology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200152 |
| |
|
|
| Oliveira,Pollyana Yvonica de; Souza,Jorge Luiz Pereira de; Baccaro,Fabricio Beggiato; Franklin,Elizabeth. |
| In Amazonia, topographical variations in soil and forest structure within "terra-firme" ecosystems are important factors correlated with terrestrial invertebrates' distribution. The objective of this work was to assess the effects of soil clay content and slope on ant species distribution over a 25 km² grid covering the natural topographic continuum. Using three complementary sampling methods (sardine baits, pitfall traps and litter samples extracted in Winkler sacks), 300 subsamples of each method were taken in 30 plots distributed over a wet tropical forest in the Ducke Reserve (Manaus, AM, Brazil). An amount of 26,814 individuals from 11 subfamilies, 54 genera, 85 species and 152 morphospecies was recorded (Pheidole represented 37% of all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beta diversity; Environmental gradient; Formicidae; Soil texture; Tropical forest. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800008 |
| |
|
| |
|
|
| Nickele,Mariane Aparecida; Reis Filho,Wilson; Oliveira,Edilson Batista de; Iede,Edson Tadeu. |
| O objetivo deste trabalho foi avaliar a densidade e o tamanho dos formigueiros de Acromyrmex crassispinus, ao longo do ano, em plantios de Pinus taeda de diferentes idades. Os experimentos foram realizados, em Rio Negrinho e em Três Barras, SC, em talhões de P. taeda com diferentes idades (recém-plantado, três anos e seis anos de idade). Em cada tratamento, foram demarcadas três parcelas de 1 ha. Os formigueiros foram classificados em três classes de tamanho: classe I, até 30 cm de diâmetro; classe II, 31 a 60 cm; e classe III, mais que 61 cm. A densidade de formigueiros de A. crassispinus foi menor no início do desenvolvimento da floresta, praticamente duplicou nos plantios com três anos, e reduziu quando a floresta estava com seis anos. A maior densidade... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Formicidae; Formigas cortadeiras; Praga florestal; Reflorestamentos. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000400003 |
| |
|
|
| Dornelas,Aline Silvestre Pereira; Sarmento,Renato de Almeida; Pedro-Neto,Marçal; Silva,Daniella Gonçalves da; Santos,Gil Rodrigues dos; Nascimento,Mariela Otoni do; Oliveira,Cléia Almeida; Souza,Danival José de. |
| Abstract: The objective of this work was to evaluate if the immunosuppressant Sandimmun Neoral enhances the activity of Metarhizium anisopliae against the leaf-cutting ant Atta sexdens. The vulnerability to the pathogen was measured by comparing the mortality rate of worker ants subjected to the following treatments: immunosuppressant+control, immunosuppressant+M. anisopliae, excipient+control, excipient+M. anisopliae, control+M. anisopliae, and control. Worker ants treated with immunosuppressant+M. anisopliae showed the highest mortality rate in comparison with those subjected to all other treatments. The use of the immunosuppressant together with entomopathogenic fungus controlled leaf-cutting ants in laboratory conditions. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Formicidae; Immunity; Immunosuppression.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000200133 |
| |
|
|
| Battirola,Leandro Dênis; Marques,Marinêz Isaac; Adis,Joachim; Delabie,Jacques H. C.. |
| Três indivíduos da palmeira Attalea phalerata Mart (Arecaceae) foram amostrados durante a fase aquática (cheia) no Pantanal de Mato Grosso (fevereiro/2001) utilizando-se a metodologia de nebulização de copas "canopy fogging". Este estudo objetivou avaliar a diversidade, hábitos alimentares e a distribuição espacial da comunidade de Formicidae em copas dessa palmeira que forma adensamentos monodominantes, típicos nessa região. Cada palmeira foi nebulizada uma única vez e realizadas três coletas subseqüentes. Um total de 966 formigas, pertencentes a 6 subfamílias, 13 tribos e 29 espécies foram amostradas em 49 m² de área amostral (19,7±52,7 indivíduos/m²) representando 3,9% do total de artrópodes obtidos. Myrmicinae foi a subfamília mais representativa, com... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attalea phalerata; Copas; Diversidade; Formicidae; Pantanal. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262005000100011 |
| |
|
| |
|
|
| Diehl,Elena; Sacchett,Franciele; Albuquerque,Emília Zoppas de. |
| Neste trabalho são listadas as espécies de formigas de solo encontradas em três ambientes (mata nativa, barreira pedregosa e areias da orla) na praia da Pedreira, localizada na Zona de Uso Intensivo do Parque Estadual de Itapuã, município de Viamão, RS. No total, foram identificadas 60 espécies representantes de 24 gêneros, 18 tribos e oito subfamílias (Dolichoderinae, Ecitoninae, Ectatomminae, Formicinae, Heteroponerinae, Myrmicinae, Ponerinae e Pseudomyrmecinae). Dos três ambientes amostrados, de acordo com o estimador de riqueza jackknife de primeira ordem, a mata nativa apresentou a maior riqueza (Sest= 37,5), seguindo-se a barreira pedregosa (Sest= 8,9) e as areias da orla (Sest= 5,9). Apenas Acromyrmex laticeps, Crematogaster sp. e Solenopsis invicta... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversidade; Formicidae; Insecta; Mirmecofauna epigéica. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262005000400016 |
| |
|
|
| Ulysséa,Mônica A.; Brandão,Carlos R. F.. |
| Ant species (Hymenoptera, Formicidae) from the seasonally dry tropical forest of northeastern Brazil: a compilation from field surveys in Bahia and literature records. The Caatingas occur predominantly in northeastern Brazil and comparatively it is the biome that received less attention than any other ecosystem in Brazil, representing the region where invertebrate groups are less known. We present here the first list of ant species of the Caatingas, compiling information from the literature, from a study of samples preserved in alcohol in the Laboratory of Entomology (Universidade Estadual de Feira de Santana), and from a field survey conducted in Milagres, Bahia, submitting standardized 1-m² samples of the leaf-litter to Winkler extractors. Summing all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Formicidae; Insecta; List of species; SDTF. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000200013 |
| |
|
|
| Camargo,Roberto da Silva; Lopes,Juliane F. S.; Forti,Luiz Carlos. |
| Energetic cost of digging behavior in workers of the leaf-cutting ant Atta sexdens (Fabricius). During nest excavation, leaf-cutting ant workers undergo reduction in their body reserve, particularly carbohydrates. In order to estimate the energetic cost of digging, groups of 30 workers of the leaf-cutting ant Atta sexdens were sealed in a hermetic chamber for 24, 48 and 72 hours, with and without soil for digging, and had the CO2 concentration measured using respirometric chambers as well as volume of soil excavated (g). As expected, the worker groups that carried out soil excavation expelled more carbon dioxide than the groups that did not excavate. Therefore, a worker with body mass of 9.65 ± 1.50 mg dug in average 0.85 ± 0.27 g of soil for 24 hours,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attini; Carbon dioxide; Insecta; Formicidae; Nest. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000400009 |
| |
|
|
| Carvalho,Karine S.; Vasconcelos,Heraldo L.. |
| Community of ants that nest in dead twigs on the ground of Central Amazonian forest, Brazil. A total area of 2,880 m² in four forest sites, near Manaus, Brazil, was searched for ant colonies nesting in dead twigs on the ground. An amount of 3,706 twigs (0.5-5 cm in diameter) were gathered, of which only 623 (16.8%) had ants, which is equivalent to a density of 0.22 nests per m². Seventy species have been found. The predominant genera were Pheidole (Westwood), Crematogaster (Lund), and Solenopsis (Westwood). For most species, many of the nests found had only workers and brood, suggesting that colonies either use multiple twigs to nest or do not live exclusively in the twigs, using other types of substrate (e.g., leaf-litter, soil, fruit pods) to nest. Most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Central Amazon; Formicidae; Litter invertebrates; Tropics. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000200002 |
| |
|
|
| Fonseca,Ricardo Carvalho; Diehl,Elena. |
| Este estudo descreve as comunidades de formigas de solo em povoamentos de eucalipto implantados em ecossistema de restinga no Rio Grande do Sul. As coletas de formigas foram feitas em seis povoamentos de Eucalyptus grandis Hill ex Maiden e de Eucalyptus saligna Smith com idades de 31, 19, sete e cinco anos. Para as coletas de formigas, foram selecionados ao acaso 24 talhões, quatro por povoamento. Em cada talhão, foram traçados três transectos com 100 m de comprimento, afastados entre si 12 m. Ao longo dos transectos, foram enterradas 30 armadilhas, tipo pitfall, com iscas de sardinha, afastadas entre si 10 m e mantidas por 24 horas. Foi coletado um total de 21.033 formigas pertencentes a cinco subfamílias, 12 tribos, 19 gêneros e 49 espécies. De acordo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversidade; Eucalyptus; Formicidae; Restingas. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262004000100016 |
| |
|
|
| Camargo,Roberto S.; Lopes,Juliane F. S.; Forti,Luiz C.; Somera,Alexandre F.; Bacci Jr,Mauricio. |
| Energy substrate used by workers of leaf-cutting ants during nest excavation. In this study we aimed to ascertain whether leaf-cutting ant workers lose body reserves (fat or sugars) as a function of nest excavation. For each treatment, we isolated 10 workers of Atta sexdens into two experimental groups, Control (C- without excavation) and Soil (S- with excavation), which were kept for different time intervals (0, 24, 48 or 72 hours), totaling 700 tested workers. We then determined the concentration of soluble carbohydrates and total lipid content in them. The total carbohydrates were determined colorimetrically, based on the reaction between carbohydrates and sulfuric acid-phenol. For determination of lipids, the insects were immersed in organic solvent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attini; Formicidae; Insecta; Lipids; Nest. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000400008 |
| |
|
| |
|
|
| Ulysséa,Mônica A.; Cereto,Carlos E.; Rosumek,Félix B.; Silva,Rogério R.; Lopes,Benedito C.. |
| Updated list of ant species (Hymenoptera, Formicidae) recorded in Santa Catarina State, southern Brazil, with a discussion of research advances and priorities. A first working list of ant species registered in Santa Catarina State, southern Brazil was published recently. Since then, many studies with ants have been conducted in the state. With data compiled from published studies and collections in various regions of the state, we present here an updated list of 366 species (and 17 subspecies) in 70 ant genera in Santa Catarina, along with their geographical distribution in the seven state mesoregions. Two hundred and seven species are recorded in the Oeste mesoregion, followed by Vale do Itajaí (175), Grande Florianópolis (150), Norte (60), Sul (41), Meio... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Formicidae; Santa Catarina State; Species list. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000400018 |
| |
|
| |
| Registros recuperados: 72 | |
|
|
|
