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Registros recuperados: 31 | |
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VASCONCELOS,Heraldo L.. |
Leaves from 120 canopy trees and 60 understory tree saplings growing in primary and secondary forests near Manaus, Brazil, were collected for determination of standing levels of herbivory (percent leaf area lost). Overall, levels of herbivory on leaves of central Amazonian trees were low. About one quarter of the leaves examined (n = 855) had no damage at all. In most other Neotropical sites studied the mean percentage of herbivory was found to vary between 5.7 and 13.1%, whereas in Manaus it was only 3.1%. The data presented here support the contention that levels of herbivore damage are positively related to soil fertility. No significant difference was found in herbivory levels between canopy trees and understory saplings. Also, there was no difference... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Atta laevigata; Herbivory; Insect-plant interactions; Amazon forest. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671999000400615 |
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HARADA,Ana Yoshi; ADIS,Joachim. |
Canopies of the locally occurring Amazonian tree species Calophyllum brasiliense. Camb. (Guttiferae, height 10 m) were fogged after dawn on the same day at five adjacent localities in a 20-year-old plantation at the Adolpho Ducke Forest Reserve near Manaus/Brazil, using natural pyrethrum (0.5%, 1.0%, 1.5%), Baythroid (0.3%) and diesel oil, respectively. The 1152 ants collected represented 52 species, 17 genera and five subfamilies. The highest number of ant species was obtained with the synthetic pyrethrum Baythroid 0.3% and with natural pyrethrum 1.5%. About 46% of the total ant species were only collected in the first hour after fogging, and 17% only during the second hour, after trees had been heavily shaken. About 73% of the total ant specimens dropped... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Canopy fogging; Pyrethrum; Forest plantation; Amazon; Neotropics. |
Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671998000300309 |
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LUTINSKI,JUNIR A.; LUTINSKI,CLADIS J.; GUARDA,CARIN; BUSATO,MARIA A.; GARCIA,FLÁVIO R.M.. |
ABSTRACT Ant diversity is influenced by the structural complexity of the environment. Ants are thus an ecologically important group due to their potential to serve as indicators of environmental quality. The objective of this study was to evaluate ant diversity in areas with different land use histories and thus, within different stages of regeneration in the Permanent Preservation Area of the Foz do Chapecó Hydroelectric Plant reservoir. Ant assemblies among sample sites were compared using rarefaction analysis, and estimated richness, frequency of occurrence, and relative abundance were calculated. Associations between species and sample sites were evaluated using Principal Component Analysis (PCA). We identified 55 species in total from 24 genera,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ant fauna; Hydroelectric plant; Permanent Preservation Areas; Richness; Ants. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602719 |
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Cestari,César. |
Behavioral studies of birds have reported several functions for active anting. Maintenance of plumage and prevention from ectoparasites are some examples. In this context, anting by males may be of particular importance in a classical lek mating system, where male-male competition is common and individuals with higher fitness may be more successful at attracting of females. In the present note, I describe the anting behavior of White-bearded Manakin (Manacus manacus) and I relate it to lek breeding and feeding (frugivory) habits of the species. Males used up to seven Solenopsis sp. ants. They rubbed each small ant from 4 to 31 times on undertail feathers until the ants were degraded; ants were not eaten. Males then searched for a new ant in the court.... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Ants; Lek; Male-male competition; Maintenance of plumage; Restinga forest; Seeds. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000400038 |
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Rossi,Marcelo Nogueira; Fowler,Harold Gordon. |
Predaceous ant fauna present in natural sugarcane field plantations in the state of São Paulo, Brazil, was evaluated by using sardine baits sampling technique. Three-month-old sugarcane plants were used for ant fauna estimation in two sugarcane mills, São João and Barra Mill. Twelve 30m X 30 m (900 m²) plots were previously delimited in each sugarcane mill for ant sampling. Ants were sampled in each plot by placing nine sardine baits in 12 mm X 75 mm plastic tubes. In the São João Mill, the predominant ant species observed was Solenopsis saevissima, followed by Dorymyrmex sp. 1, Pheidole sp. 2, and Crematogaster sp. 1. Considering only ant genus, Solenopsis, Pheidole, Dorymyrmex, and Crematogaster, were predominant. In the Barra Mill, the predominant ant... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Predation; Diatraea saccharalis; Sugarcane; Solenopsis; Pheidole. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500017 |
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Bolico, Cristiane Ferras; Oliveira, Eduardo Alves; Gantes, Marcel Lucas; Dumont, Luiz Felipe Cestari; Carrasco, Daiane Silveira; D´Incao, Fernando. |
O trabalho objetiva inventariar a mirmecofauna de duas marismas distintas e estimar a diversidade, similaridade, bem como relacionar a temperatura, umidade relativa do ar e a pluviosidade aos padrões de flutuação de abundância desses insetos. Além disso, foram reconhecidas as espécies que atuam como indicadores ambientais. O estudo foi realizado em duas marismas localizadas no Estuário da Laguna Lagoa dos Patos, Ilha da Torotama e Molhe Oeste da Barra. Foram capturados 853 formicídeos, distribuídos em 19 gêneros. As duas marismas apresentaram índices de diversidade e abundância semelhantes, Ds = 0,958 e I = 0,042 na Ilha da Torotama e Ds = 0,8889 e I = 0,111 no Molhe Oeste da Barra. As flutuações dos grupos de formicídeos coincidiram em ambas as áreas,... |
Tipo: Article |
Palavras-chave: Bioindicador; Ecossistema Costeiro; Formigas; Insetos; Ants; Malaise; Bioindicator; Coastal Ecosystem; Insects. |
Ano: 2012 |
URL: http://hdl.handle.net/2315/246 |
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Diehl,Elena; Cavalli-Molina,Suzana; Araújo,Aldo Mellender de. |
This is the first study of isoenzyme variability in the leaf-cutting ants (Myrmicinae, Attini) Acromyrmex heyeri (Forel, 1899) and A. striatus (Roger, 1863) which are common throughout the southern Brazilian state of Rio Grande do Sul. We studied the alloenzyme variability of malate dehydrogenase (MDH), alpha-glycerophosphate dehydrogenase (alpha-GPDH) and amylase (AMY) in 97 colonies of A. heyeri and 103 colonies of A. striatus. Five loci were found for these enzyme systems, one locus (Amy-1) being monomorphic in both species and four loci (Mdh-1, alpha-Gpdh-1, Amy-2, and Amy-4) being polymorphic. For each species there were exclusive alleles for the Mdh-1 and Amy-2 loci and differences were also found in the allele frequencies for the other polymorphic... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Allozyme variation; Fungus grower ants; Genetic polymorphism; Haplodiploid. |
Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200010 |
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Barbosa,Josefa T. V.; Barbosa,Marcílio S.; Morais,Suzyane; Santana,Antônio E. G.; Almeida,Cicero. |
Abstract The ants of the genus Atta are considered important pests to agriculture in the Americas, although Atta species are also important contributors to ecosystem functions in the various habitats in which they occur. The aim of this study was to assemble four complete mitochondrial genomes of the genus Atta, construct the phylogenomic tree, and analyze the gene content, order, and organization. The mitogenomes of A. colombica, A. opaciceps, A. texana, and A. sexdens rubropilosa comprise 18,392, 19,257, 19,709, and 19,748 bp, respectively. The four Atta mitogenomes showed the charactistics typical of those of insects, with 13 protein-coding genes, 22 tRNAs, and 2 rRNAs, with genes displayed in the conventional order. Analysis for intergenic spacer... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Evolution; Mitogenomes. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572019000500801 |
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SILVA, S. E. L. D.; MAGALHAES, F. E. L.. |
O formicida em forma de isca granulada tem sido largarmente utilizado pela sua praticidade, pois dispensa o uso de equipamentos para sua aplicacao e pode ser colocado ao lado dos carreadores, sem necessidade de se localizar o sauveiro. No entanto, a presenca de chuvas e mesmo a alta umidade prejudicam a eficiência desse produto, fator limitante do uso de formicidas em forma de isca. Por isso, foi desenvolvido, no CNPSD, um tipo de porta-iscas, de confeccao simples, baixo custo e de uso aprovado porque, mesmo no periodo chuvoso, nao ha perda de iscas por emboloramento. |
Tipo: Folhetos |
Palavras-chave: Brasil; Amazonas; Ants; Armadilha; Atta Laevigata; Controle Químico; Formicida; Isca; Saúva; Atta sexdens; Atta cephalotes; Formicidae; Chemical control. |
Ano: 1983 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665431 |
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Nikbakhtzadeh,MR; Akbarzadeh,K; Tirgari,S. |
The genus Pachycondyla is a large group of ants in the Ponerini tribe, known mostly from tropical and subtropical regions. Pachycondyla sennaarensis, the so-called Samsum ant in the Middle East, is distributed throughout the African tropics, Arabian Peninsula and Iran, where it is responsible for many cases of insect-induced dermal lesions and systemic reactions in humans. Populations of P. sennaarensis were studied in two regions of Iran and some aspects of their biology, ecology and medical importance are herein presented. Colonies of P. sennaarensis contain less than 850 workers that live in complicated underground galleries approximately one meter deep. Because of the harsh weather conditions of southern Iran, they can survive only in human disturbed... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Samsum ant; Sting; Ants; Formicidae; Ponerinae; Pachycondyla. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000300012 |
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Subedi, A.; Chaudhary, R.P.; Achterberg, C. van; Heijerman, T.; Lens, F.; Dooren, T.J.M. van; Gravendeel, B.. |
• Premise of the Study: Although many species in the orchid genus Coelogyne are horticulturally popular, hardly anything is known about their pollination. Pollinators of three species were observed in the fi eld in Nepal. This information is urgently needed because many orchid species in Nepal are endangered. Whether the exudates produced by extrafl oral nectaries played a role in protection against herbivory was also investigated. • Methods: Pollinators of C. fl accida , C. nitida , and Otochilus albus were filmed, captured, and identifi ed. Ant surveys and exclusion experiments were carried out. To investigate whether pollinators are needed for fruit set, plants were wrapped in mesh wire bags. Infl orescence stems were examined with microscopy. Fehling... |
Tipo: Article / Letter to the editor |
Palavras-chave: Ants; Apis cerana; Bombus kashmirensis; Coelogye; Herbivory; Nectary-modified stomata; Nepal; Otochilus; Pholidota; Pollination. |
Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/430082 |
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Registros recuperados: 31 | |
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