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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
13/04/1999 |
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Data da última atualização: |
13/04/1999 |
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Autoria: |
CROWELL, K. L.; PIMM, S. L. |
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Afiliação: |
Department of Biology, St. Lawrence University. Department of Biology, New Mexico State University. |
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Título: |
Competition and niche shifts of mice introduced onto small islands. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
Oikos, v.27, n.2, p.251-258, 1976. |
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Idioma: |
Inglês |
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Conteúdo: |
Peromyscus maniculatus (Wagner) and Clethrionomys gapperi (Vigors) were introduced to a 0.8 ha island to which only Microtus pennsylvanicus (Ord) was native in order to study subsequent interactions. The populations were censured for the ensuing six summers. Although all three species occupied overlapping home ranges in some habitats, there were significant differences in their habitat preferences. Principal component analysis of number of captures of the respective species at 45 trap-sites showed that habitat utilization changed with time in response to changes in intra- and interspecific densities. Multiple regressioan was used to estimate the magnitude of interspecific after removal of effects due to habitat selection. Clethtionomys displaced both Microtus and Peromyscus from wooded habitats, and Peromyscus in turn displaced Microtus from shrubby habitats. The magnitude of this interference increased with population density, and the inhibitory effects per indiovidual at maximum observed densities were as follows: Clethrionomys on Microtus - 0.649 and Clethrionomys on Peromyscus - 0.443, and Peromyscus on Microtus - 0.662. The reciprocal effects were close to zero. We suggest that the success of Microtus on oslands accrues from its ability as an opportunist, while the failure of Clethrionomys on islands is attributable to its rigid and restricted habitat preferences. |
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Palavras-Chave: |
Competicao; Competition; Ilha pequena; Metodologia; Niche shifts; Nicho; Smal islands. |
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Thesagro: |
Rato. |
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Thesaurus Nal: |
methodology; mice. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02007naa a2200253 a 4500
001 1795187
005 1999-04-13
008 1976 bl --- 0-- u #d
100 1 $aCROWELL, K. L.
245 $aCompetition and niche shifts of mice introduced onto small islands.
260 $c1976
520 $aPeromyscus maniculatus (Wagner) and Clethrionomys gapperi (Vigors) were introduced to a 0.8 ha island to which only Microtus pennsylvanicus (Ord) was native in order to study subsequent interactions. The populations were censured for the ensuing six summers. Although all three species occupied overlapping home ranges in some habitats, there were significant differences in their habitat preferences. Principal component analysis of number of captures of the respective species at 45 trap-sites showed that habitat utilization changed with time in response to changes in intra- and interspecific densities. Multiple regressioan was used to estimate the magnitude of interspecific after removal of effects due to habitat selection. Clethtionomys displaced both Microtus and Peromyscus from wooded habitats, and Peromyscus in turn displaced Microtus from shrubby habitats. The magnitude of this interference increased with population density, and the inhibitory effects per indiovidual at maximum observed densities were as follows: Clethrionomys on Microtus - 0.649 and Clethrionomys on Peromyscus - 0.443, and Peromyscus on Microtus - 0.662. The reciprocal effects were close to zero. We suggest that the success of Microtus on oslands accrues from its ability as an opportunist, while the failure of Clethrionomys on islands is attributable to its rigid and restricted habitat preferences.
650 $amethodology
650 $amice
650 $aRato
653 $aCompeticao
653 $aCompetition
653 $aIlha pequena
653 $aMetodologia
653 $aNiche shifts
653 $aNicho
653 $aSmal islands
700 1 $aPIMM, S. L.
773 $tOikos$gv.27, n.2, p.251-258, 1976.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Origem |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Unidades Centrais. |
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Data corrente: |
20/12/2017 |
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Data da última atualização: |
11/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MORAES, M. C. B.; BORGES, M.; LAUMANN, R. A.; BORGES, R.; VIANA, A. R.; THOMAZINI, M. J.; SILVA, C. C. A. da; OLIVEIRA, M. W. M. de; BOFF, M. I. C. |
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Afiliação: |
MARIA CAROLINA BLASSIOLI MORAES, Cenargen; MIGUEL BORGES, Cenargen; RAUL ALBERTO LAUMANN, Cenargen; RAFAEL BORGES, UDESC; AMANDA RODRIGUES VIANA; MARCILIO JOSE THOMAZINI, CNPF; CLEONOR CAVALCANTE ALVES DA SILVA, Cenargen; MARCIO WANDRE MORAIS DE OLIVEIRA, Cenargen; MARI INES CARISSIMI BOFF, UDESC. |
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Título: |
Identification and field evaluation of a new blend of the sex pheromone of Hypsipyla grandella. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 52, n. 11, p. 977-986, nov. 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to identify and carry out a field testing of the sex pheromone composition of the mahogany shoot borer, Hypsipyla grandella, from a population in Southern Brazil. Abdominal glands of H. grandella females were excised and extracted using n-hexane; the gland extracts were analysed by gas chromatography (GC-FID and GC-MS). Wind-tunnel and electrophysiology experiments were conducted to evaluate the role of gland compounds in the mating behavior of H. grandella males. In the field, pheromone traps containing the identified pheromone were tested. In addition to the two previously identified compounds ? (9Z,12E)-tetradecadien-1-ol and (9Z,12E)?tetradecadienyl acetate ?, in insects from Central America populations, two additional compounds were identified in the blend: (9Z)- tetradecen-1-ol and (9Z)-tetradecenyl acetate. Gas chromatography-electroantennographic analyses showed that these four components elicited antennal responses from conspecific males. Wind tunnel bioassays using different amounts of the components Z9?14:OH, Z9,E12?14:OH, Z9?14:OAc, and Z9,E12?14:OAc, elicited male responses similar to the response to conspecific calling females. When the binary and quaternary mixtures were tested in field conditions, males were attracted to the traps containing the quaternary mixture. The new pheromone blend identified in H. grandella males has a great potential to be exploited as a monitoring tool or control measure in the field. |
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Palavras-Chave: |
Bioensaio; Bioensaios em túnel de vento; Broca-do-ponteiro do mogno; Eletroantenografia; Extrato de glândula; Gland extract; Mahogany shoot borer; Pheromone redescription; Redescrição de feromônio; Semiochemical; Semioquímico; Semioquímicos; Wind tunnel bioassays. |
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Thesaurus NAL: |
electroantennography; Semiochemicals. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169355/1/24160-124863-2-PB.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169506/1/Identification-and-field-evaluation-of-a-new-blend.pdf
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Marc: |
LEADER 02671naa a2200397 a 4500
001 2085075
005 2018-01-11
008 2017 bl uuuu u00u1 u #d
100 1 $aMORAES, M. C. B.
245 $aIdentification and field evaluation of a new blend of the sex pheromone of Hypsipyla grandella.
260 $c2017
520 $aThe objective of this work was to identify and carry out a field testing of the sex pheromone composition of the mahogany shoot borer, Hypsipyla grandella, from a population in Southern Brazil. Abdominal glands of H. grandella females were excised and extracted using n-hexane; the gland extracts were analysed by gas chromatography (GC-FID and GC-MS). Wind-tunnel and electrophysiology experiments were conducted to evaluate the role of gland compounds in the mating behavior of H. grandella males. In the field, pheromone traps containing the identified pheromone were tested. In addition to the two previously identified compounds ? (9Z,12E)-tetradecadien-1-ol and (9Z,12E)?tetradecadienyl acetate ?, in insects from Central America populations, two additional compounds were identified in the blend: (9Z)- tetradecen-1-ol and (9Z)-tetradecenyl acetate. Gas chromatography-electroantennographic analyses showed that these four components elicited antennal responses from conspecific males. Wind tunnel bioassays using different amounts of the components Z9?14:OH, Z9,E12?14:OH, Z9?14:OAc, and Z9,E12?14:OAc, elicited male responses similar to the response to conspecific calling females. When the binary and quaternary mixtures were tested in field conditions, males were attracted to the traps containing the quaternary mixture. The new pheromone blend identified in H. grandella males has a great potential to be exploited as a monitoring tool or control measure in the field.
650 $aelectroantennography
650 $aSemiochemicals
653 $aBioensaio
653 $aBioensaios em túnel de vento
653 $aBroca-do-ponteiro do mogno
653 $aEletroantenografia
653 $aExtrato de glândula
653 $aGland extract
653 $aMahogany shoot borer
653 $aPheromone redescription
653 $aRedescrição de feromônio
653 $aSemiochemical
653 $aSemioquímico
653 $aSemioquímicos
653 $aWind tunnel bioassays
700 1 $aBORGES, M.
700 1 $aLAUMANN, R. A.
700 1 $aBORGES, R.
700 1 $aVIANA, A. R.
700 1 $aTHOMAZINI, M. J.
700 1 $aSILVA, C. C. A. da
700 1 $aOLIVEIRA, M. W. M. de
700 1 $aBOFF, M. I. C.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 52, n. 11, p. 977-986, nov. 2017.
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Embrapa Florestas (CNPF) |
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