Termites
Mostrando 13-24 de 132 artigos, teses e dissertações.
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13. Soil Physical and Chemical Properties in Epigeal Termite Mounds in Pastures
ABSTRACT We characterized soil physical and chemical properties and soil organic matter in epigeal termite mounds in pastures to evaluate the changes promoted by termites in comparison to an adjacent area. We selected seven active epigeal termite mounds in the municipality of Seropédica, state of Rio de Janeiro, Brazil. Soil samples were collected from top
Floresta Ambient.. Publicado em: 19/03/2018
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14. Termite Mounds Effects on Soil Properties in the Atlantic Forest Biome
ABSTRACT Termites have peculiar activities in the soil, inducing significant changes in the soil properties. The objective of this study was to assess physical and chemical properties and soil organic matter to evaluate the effect of termite activity and termite mounds on the soil. Two toposequences were selected and divided in slope thirds (shoulder, backsl
Rev. Bras. Ciênc. Solo. Publicado em: 08/03/2018
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15. Antimicrobial Diterpene from the Brazilian Termite Nasutitermes macrocephalus (Isoptera: Termitidae: Natutitermitinae)
Termites are insects with a complex social organization on castes among which soldiers are the only responsible for the colony defense. The soldiers of the Nasutitermes genus use chemical defense, which comprises a mixture of mono, sesqui and mainly diterpenes. The new diterpene 2b,3a-dihydroxy-trinervita-1(15),11-diene, found in Nasutitermes macrocephalus,
J. Braz. Chem. Soc.. Publicado em: 2018-03
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16. Natural Wood Resistance of Mimosa caesalpiniifolia in Field Testing
ABSTRACT The natural wood resistance of sabiá (Mimosa caesalpiniifolia) was evaluated under field conditions for use in organic agriculture. A total of 97 one-meter length logs with bark and diameter classes (5.0-7.9 and 8.0-11 cm) were fixed (0.4 m) in the soil at a distance of 0.5 m from the edges of a forest fragment in Viana, Espírito Santo, Brazil and
Floresta Ambient.. Publicado em: 01/02/2018
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17. Cloning and purification of the first termicin-like peptide from the cockroach Eupolyphaga sinensis
Abstract Background Termicin is an antimicrobial peptide with six cysteines forming three disulfide bridges that was firstly isolated from the salivary glands and hemocytes of the termite Pseudacanthotermes spiniger. In contrast to many broad-spectrum antimicrobial peptides, termicin is most active against filamentous fungi. Although more than one hundred
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 19/02/2016
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18. Distribuição Sazonal de Heterotermes Tenuis (Hagen) em Povoamentos de Eucalyptus spp.
Este trabalho teve por objetivo estudar a distribuição sazonal de Heterotermes tenuis (Hagen), utilizando armadilhas celulósicas instaladas ao nível do solo, 50, 100 e 150 cm de profundidades. As coletas ocorreram quinzenalmente por um período de 12 meses no município de Cuiabá-MT, em plantios de Eucalyptus spp. Os dados foram analisados por meio do m
Floresta Ambient.. Publicado em: 23/10/2015
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19. BIBLIOMETRICS ON ONE OF THE LARGEST TERMITE INVENTORIES IN THE CERRADO: "STUDIES ON TERMITES FROM THE MATO GROSSO STATE, BRAZIL BY AGA MATHEWS 1977"
RESUMO Este trabalho fez uma análise bibliométrica da repercussão internacional do livro "Studies on termites from the Mato Grosso State, Brazil", de AGA Mathews (1977). O número de citações aumentou ao longo dos anos após a primeira citação. O livro de Mathews foi citado em artigos e revisões, teses e dissertações, livros e capítulos, resumos e
Pap. Avulsos Zool. (São Paulo). Publicado em: 2015
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20. Terpenos em cupins do gênero Nasutitermes (Isoptera, Termitidae, Nasutitermitinae)
The chemical composition of the front gland of termites has been studied for over 40 years. The genus Nasutitermes, considered the most evolved of the Termitidae family, has a peculiarity that sets it apart from the others: a caste of soldiers that carry a terpenic mixture used in defense. This secretion is formed by mono, sesqui and diterpenes from trinervi
Quím. Nova. Publicado em: 2014
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21. Isópodos terrestres (Crustacea: Isopoda: Oniscidea) em ninhos de térmitas (Blattodea: Termitidae) em uma plantação de cacau no Brasil
Diversos animais, incluindo isópodos terrestres, vivem em ninhos de térmites como ocupantes secundários. Neste trabalho, foram registradas cinco espécies de isópodos terrestres (Oniscidea) em 17 de 34 ninhos deNasutitermes estudados em uma plantação de cacau situada próxima a Ilhéus, Bahia, Brasil. Destes ninhos, dois eram decadentes e 15 abandonado
Biota Neotrop.. Publicado em: 2013-09
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22. Estoque de combustível fino e decomposição de folhas em florestas de igapó do rio Negro / Fine fuel load and leaf decomposition in Rio Negro floodplain forests
In years of low rainfall, fires have occurred in Amazonian black-water floodplain forests, including the Middle Rio Negro. The fires are documented from satellite images. Forest fires require ignition sources, fuel and dry weather. To understand the susceptibility of these forests to fire we investigated the stock of fine fuel on the ground at 29 sites in bl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/10/2012
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23. Composição e variabilidade enantiomérica de α-pineno em Constrictotermes cyphergaster (Silvestri, 1901) (Isoptera; Termitidae) / Composition and enantiomeric variability of α-pinene in Constrictotermes Cyphergaster (Silvestri, 1901) (Isoptera; Termitidae)
Termites are eusocial insects of isoptera order that part in seven families. In this study we analyze the chirality of α-pinene in the defensive secretion that C. cyphergaster (Isoptera, Termitidae, Nasutitermitinae) this compound showed that among the majority of termite volatile. Along with checking the chirality was made a study seeking to correlate
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/10/2011
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24. Composição e variabilidade enantiomérica de α-pineno em Constrictotermes cyphergaster (Silvestri, 1901) (Isoptera; Termitidae) / Composition and enantiomeric variability of α-pinene in Constrictotermes Cyphergaster (Silvestri, 1901) (Isoptera; Termitidae)
Termites are eusocial insects of isoptera order that part in seven families. In this study we analyze the chirality of α-pinene in the defensive secretion that C. cyphergaster (Isoptera, Termitidae, Nasutitermitinae) this compound showed that among the majority of termite volatile. Along with checking the chirality was made a study seeking to correlate
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/10/2011