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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/05/2015 |
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Data da última atualização: |
31/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SEGERS, F. H. I. D.; MENEZES, C.; VOLLET-NETO, A.; LAMBERT, D.; GRÜTER, C. |
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Afiliação: |
Francisca H. I. D. Segers, USP; CRISTIANO MENEZES, CPATU; Ayrton Vollet-Neto, USP; Dorothee Lambert, USP / University of Tübingen; Christoph Grüter, USP / University of Lausanne. |
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Título: |
Soldier production in a stingless bee depends on rearing location and nurse behaviour. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Behavioral Ecology and Sociobiology, v. 69, n. 4, p. 613-623, Apr. 2015. |
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DOI: |
10.1007/s00265-015-1872-6 |
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Idioma: |
Inglês |
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Conteúdo: |
The spectacular morphological variation among workers of certain ant and termite species has fascinated evolutionary biologists since Darwin. In some species, environmental triggers induce larvae to develop into different phenotypes, e.g. minor or major workers (soldiers). Recently, the first soldier subcaste was discovered in a bee, the stingless bee Tetragonisca angustula. In contrast to ants, which raise their offspring by progressively feeding larvae until the pupal stage, T. angustula nurses mass provision individual brood cells after which the bees develop from egg to young workers in sealed cells on a seemingly uniform brood comb. This prompts the question of how this bee creates a morphologically variable workforce without larvae having direct contact with nursing workers. We investigated where T. angustula raises a larger soldier subcaste on its compact brood comb. Additionally, we examined whether size differences among workers could be generated by differential distribution of food by nursing workers. We found that colonies produce c. 1?6 % of soldier-sized workers, which mainly emerge from a small central area of the comb. In this area, cells are wider and a larger number of nursing bees unload larval food here before oviposition. Cell attendance levels prior to oviposition were similar across the comb and, thus, did not explain the larger food volumes found in the centre. Our results suggest that workers determine soldier production via larval food discharges and cell-building behaviour. Nutritional differences among larvae might then induce larvae into one or the other caste developmental pathway. MenosThe spectacular morphological variation among workers of certain ant and termite species has fascinated evolutionary biologists since Darwin. In some species, environmental triggers induce larvae to develop into different phenotypes, e.g. minor or major workers (soldiers). Recently, the first soldier subcaste was discovered in a bee, the stingless bee Tetragonisca angustula. In contrast to ants, which raise their offspring by progressively feeding larvae until the pupal stage, T. angustula nurses mass provision individual brood cells after which the bees develop from egg to young workers in sealed cells on a seemingly uniform brood comb. This prompts the question of how this bee creates a morphologically variable workforce without larvae having direct contact with nursing workers. We investigated where T. angustula raises a larger soldier subcaste on its compact brood comb. Additionally, we examined whether size differences among workers could be generated by differential distribution of food by nursing workers. We found that colonies produce c. 1?6 % of soldier-sized workers, which mainly emerge from a small central area of the comb. In this area, cells are wider and a larger number of nursing bees unload larval food here before oviposition. Cell attendance levels prior to oviposition were similar across the comb and, thus, did not explain the larger food volumes found in the centre. Our results suggest that workers determine soldier production via larval food discharges an... Mostrar Tudo |
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Palavras-Chave: |
Division of labour; Meliponicultura; Morphological castes; Size polymorphism. |
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Thesagro: |
Abelha; Criação. |
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Thesaurus Nal: |
social insects; stingless bees. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 02461naa a2200277 a 4500
001 2015669
005 2022-05-31
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1007/s00265-015-1872-6$2DOI
100 1 $aSEGERS, F. H. I. D.
245 $aSoldier production in a stingless bee depends on rearing location and nurse behaviour.$h[electronic resource]
260 $c2015
520 $aThe spectacular morphological variation among workers of certain ant and termite species has fascinated evolutionary biologists since Darwin. In some species, environmental triggers induce larvae to develop into different phenotypes, e.g. minor or major workers (soldiers). Recently, the first soldier subcaste was discovered in a bee, the stingless bee Tetragonisca angustula. In contrast to ants, which raise their offspring by progressively feeding larvae until the pupal stage, T. angustula nurses mass provision individual brood cells after which the bees develop from egg to young workers in sealed cells on a seemingly uniform brood comb. This prompts the question of how this bee creates a morphologically variable workforce without larvae having direct contact with nursing workers. We investigated where T. angustula raises a larger soldier subcaste on its compact brood comb. Additionally, we examined whether size differences among workers could be generated by differential distribution of food by nursing workers. We found that colonies produce c. 1?6 % of soldier-sized workers, which mainly emerge from a small central area of the comb. In this area, cells are wider and a larger number of nursing bees unload larval food here before oviposition. Cell attendance levels prior to oviposition were similar across the comb and, thus, did not explain the larger food volumes found in the centre. Our results suggest that workers determine soldier production via larval food discharges and cell-building behaviour. Nutritional differences among larvae might then induce larvae into one or the other caste developmental pathway.
650 $asocial insects
650 $astingless bees
650 $aAbelha
650 $aCriação
653 $aDivision of labour
653 $aMeliponicultura
653 $aMorphological castes
653 $aSize polymorphism
700 1 $aMENEZES, C.
700 1 $aVOLLET-NETO, A.
700 1 $aLAMBERT, D.
700 1 $aGRÜTER, C.
773 $tBehavioral Ecology and Sociobiology$gv. 69, n. 4, p. 613-623, Apr. 2015.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
10/12/1993 |
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Data da última atualização: |
22/05/2023 |
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Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
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Autoria: |
MELLO, S. C. M. de; BORGES NETO, C. R.; TEIXEIRA, E. A. |
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Título: |
Variabilidade patogenica e morfologica de isolados de Cercospora caricis obtidos de tiririca roxa e de tiririca amarela. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Brasilia: Embrapa Recursos Geneticos e Biotecnologia, 2001. |
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Páginas: |
18 p. |
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Série: |
(Embrapa Recursos Geneticos e Biotecnologia. Boletim de Pesquisa e Desenvolvimento, 6). |
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Idioma: |
Português |
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Conteúdo: |
Doze isolados de Cercospora caricis Oudem. foram avaliados quanto à patogenicidade e virulência a plantas de duas espécies de tiririca (Cyperus rotundus L. e C. esculentus L.), em casa de vegetação. Os isolados foram, também estudados quanto à morfologia de colônias e mforfometria de conídios e de conidióforos. Todos os isolados causaram doença em C. rotundus, porém os isolados CEN141 e CEN143 foram os únicos patogênicos à C. esculentus. Com relação à virulência a plantas de C. rotundus, destacaram-se os isolados CEN66 (CG672), CEN142 e CEN114. De acordo com a análise de agrupamento, estes isolados calssificaram-se como altamente virulentos (93-95% de folhas infectadas, 51-54 % de folhas mortas e 62-66 % de área foliar infectada). O isolado CEN115 produziu, em seu metabolismo secundário, uma substância com pigmentação vermelha observada no meio de cultura, fato não verificado com os demais isolados. |
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Palavras-Chave: |
Biocontrol; Biocontrole; Brasil; Brasília; Caracterizacao; Cercospora caricis; Cercospora cariris; Characterization; Conidióforos; Conídios; Distrito Federal; Patógenos; Planta daninha; Tiririca amarela; Tiririca roxa; Tiriricao; Variabilidade patogênica. |
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Thesagro: |
Controle Biológico; Cyperus Esculentus; Cyperus Rotundus; Fungo; Patogenicidade; Tiririca; Variação Genética. |
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Thesaurus NAL: |
biological control; fungi; genetic variation; weeds. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/180564/1/54270001.pdf
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Marc: |
LEADER 02365nam a2200493 a 4500
001 1180564
005 2023-05-22
008 2001 bl uuuu u0uu1 u #d
100 1 $aMELLO, S. C. M. de
245 $aVariabilidade patogenica e morfologica de isolados de Cercospora caricis obtidos de tiririca roxa e de tiririca amarela.
260 $aBrasilia: Embrapa Recursos Geneticos e Biotecnologia$c2001
300 $a18 p.
490 $a(Embrapa Recursos Geneticos e Biotecnologia. Boletim de Pesquisa e Desenvolvimento, 6).
520 $aDoze isolados de Cercospora caricis Oudem. foram avaliados quanto à patogenicidade e virulência a plantas de duas espécies de tiririca (Cyperus rotundus L. e C. esculentus L.), em casa de vegetação. Os isolados foram, também estudados quanto à morfologia de colônias e mforfometria de conídios e de conidióforos. Todos os isolados causaram doença em C. rotundus, porém os isolados CEN141 e CEN143 foram os únicos patogênicos à C. esculentus. Com relação à virulência a plantas de C. rotundus, destacaram-se os isolados CEN66 (CG672), CEN142 e CEN114. De acordo com a análise de agrupamento, estes isolados calssificaram-se como altamente virulentos (93-95% de folhas infectadas, 51-54 % de folhas mortas e 62-66 % de área foliar infectada). O isolado CEN115 produziu, em seu metabolismo secundário, uma substância com pigmentação vermelha observada no meio de cultura, fato não verificado com os demais isolados.
650 $abiological control
650 $afungi
650 $agenetic variation
650 $aweeds
650 $aControle Biológico
650 $aCyperus Esculentus
650 $aCyperus Rotundus
650 $aFungo
650 $aPatogenicidade
650 $aTiririca
650 $aVariação Genética
653 $aBiocontrol
653 $aBiocontrole
653 $aBrasil
653 $aBrasília
653 $aCaracterizacao
653 $aCercospora caricis
653 $aCercospora cariris
653 $aCharacterization
653 $aConidióforos
653 $aConídios
653 $aDistrito Federal
653 $aPatógenos
653 $aPlanta daninha
653 $aTiririca amarela
653 $aTiririca roxa
653 $aTiriricao
653 $aVariabilidade patogênica
700 1 $aBORGES NETO, C. R.
700 1 $aTEIXEIRA, E. A.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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