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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
07/10/2020 |
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Data da última atualização: |
07/10/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, W. A. L da; POEHLAND, R.; OLIVEIRA, C. C. de; FERREIRA, M. G. C. R.; ALMEIDA, R. G. de; CÁCERES, M. B. S.; MACEDO, G. G.; COSTA e SILVA, E. V. da; ALVES, F. V.; NOGUEIRA, E.; MELO-STERZA, F. de A. |
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Afiliação: |
WILIAN APARECIDO LEITE DA SILVA, State University of Mato Grosso do Sul,Aquidauana, Mato Grosso do Sul; RALF POEHLAND, Institute of ReproductiveBiology, Dummerstorf, Germany; CAROLINE CARVALHO DE OLIVEIRA, Federal University of Mato Grosso do Sul, CampoGrande, Mato Grosso do Sul; MARIANE GABRIELA CESAR RIBEIRO FERREIRA, Federal University of Mato Grosso do Sul, CampoGrande, Mato Grosso do Sul; RICARDO GARCIA DE ALMEIDA, Federal University of Mato Grosso do Sul, CampoGrande; MIRELA BROCHADO SOUZA CÁCERES, University of Londrina, Londrina; GUSTAVO GUERINO MACEDO, Federal University of Mato Grosso do Sul, Campo Grande; ELIANE VIANNA DA COSTA E SILVA, Federal University of Mato Grosso do Sul, Campo Grande; FABIANA VILLA ALVES, CNPGC; ERIKLIS NOGUEIRA, CPAP; FABIANA DE ANDRADE MELO-STERZA, University of Mato Grosso do Sul,Aquidauana, Mato Grosso do Sul. |
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Título: |
Shading effect on physiological parameters and in vitro embryoproduction of tropical adapted Nellore heifers in integratedcrop-livestock-forest systems. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Tropical Animal Health and Production, v. 52, n. 5, p. 2273-2281, 2020. |
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DOI: |
https://doi.org/10.1007/s11250-020-02244-3 |
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Idioma: |
Português |
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Conteúdo: |
The aim of this study was to evaluate the impact of increased shadow supply in integrated crop-livestock-forest systems onin vitro embryonic development and physiological parameters related to stress response in Nellore heifers (Bos indicus). For thestudy, animals (n= 16) were randomly divided into two groups and kept in areas with different afforestation systems, theintegrated crop-livestock-forest (ICLF) and the integrated crop-livestock (ICL) system. The microclimate of the ICLF systemprovided better comfort conditions than ICL. No differences of respiratory rate, rectal temperature, cortisol, T3, T4, oocytequality, and cleavage rate between the systems were verified. A higher blastocyst rate was observed in the ICLF (p<0.05).Theresults demonstrate that Nellore heifers managed in ICLF during summer in Midwest of Brazil showed higher production ofin vitro embryos, without typical changes in its physiological parameters. The results observed in the present study indicate thatzebu females are able to respond satisfactorily to the intense heat conditions; however, we believe that the long period to whichthese animals are exposed to these conditions interferes in the oocyte competence and embryo development. |
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Palavras-Chave: |
ILPF. |
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Thesagro: |
Novilho; Pecuária; Stress. |
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Thesaurus Nal: |
Heifers; Stress management. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02254naa a2200325 a 4500
001 2125344
005 2020-10-07
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11250-020-02244-3$2DOI
100 1 $aSILVA, W. A. L da
245 $aShading effect on physiological parameters and in vitro embryoproduction of tropical adapted Nellore heifers in integratedcrop-livestock-forest systems.$h[electronic resource]
260 $c2020
520 $aThe aim of this study was to evaluate the impact of increased shadow supply in integrated crop-livestock-forest systems onin vitro embryonic development and physiological parameters related to stress response in Nellore heifers (Bos indicus). For thestudy, animals (n= 16) were randomly divided into two groups and kept in areas with different afforestation systems, theintegrated crop-livestock-forest (ICLF) and the integrated crop-livestock (ICL) system. The microclimate of the ICLF systemprovided better comfort conditions than ICL. No differences of respiratory rate, rectal temperature, cortisol, T3, T4, oocytequality, and cleavage rate between the systems were verified. A higher blastocyst rate was observed in the ICLF (p<0.05).Theresults demonstrate that Nellore heifers managed in ICLF during summer in Midwest of Brazil showed higher production ofin vitro embryos, without typical changes in its physiological parameters. The results observed in the present study indicate thatzebu females are able to respond satisfactorily to the intense heat conditions; however, we believe that the long period to whichthese animals are exposed to these conditions interferes in the oocyte competence and embryo development.
650 $aHeifers
650 $aStress management
650 $aNovilho
650 $aPecuária
650 $aStress
653 $aILPF
700 1 $aPOEHLAND, R.
700 1 $aOLIVEIRA, C. C. de
700 1 $aFERREIRA, M. G. C. R.
700 1 $aALMEIDA, R. G. de
700 1 $aCÁCERES, M. B. S.
700 1 $aMACEDO, G. G.
700 1 $aCOSTA e SILVA, E. V. da
700 1 $aALVES, F. V.
700 1 $aNOGUEIRA, E.
700 1 $aMELO-STERZA, F. de A.
773 $tTropical Animal Health and Production$gv. 52, n. 5, p. 2273-2281, 2020.
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Embrapa Pantanal (CPAP) |
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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. |
Registro Completo
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
08/02/2012 |
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Data da última atualização: |
11/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
GRÜTER, C.; MENEZES, C.; IMPERATRIZ-FONSECA, V. L.; RATNIEKS, F. L. W. |
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Afiliação: |
CHRISTOPH GRÜTER, UNIVERSITY OF SUSSEX; CRISTIANO MENEZES, CPATU; VERA L. IMPERATRIZ-FONSECA, UNIVERSIDADE FEDERAL RURAL DO SEMIÁRIDO; FRANCIS L. W. RATNIEKS, UNIVERSITY OF SUSSEX. |
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Título: |
A morphologically specialized soldier caste improves colony defense in a neotropical eusocial bee. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
PNAS, v. 109, n. 4, p. 1182-11986, Jan. 2012. |
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DOI: |
10.1073/pnas.1113398109 |
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Idioma: |
Inglês |
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Conteúdo: |
Division of labor among workers is common in insect societies and is thought to be important in their ecological success. In most species, division of labor is based on age (temporal castes), but workers in some ants and termites show morphological specialization for particular tasks (physical castes). Large-headed soldier ants and termites are well-known examples of this specialization. However, until now there has been no equivalent example of physical worker subcastes in social bees or wasps. Here we provide evidence for a physical soldier subcaste in a bee. In the neotropical stingless bee Tetragonisca angustula, nest defense is performed by two groups of guards, one hovering near the nest entrance and the other standing on the wax entrance tube. We show that both types of guards are 30% heavier than foragers and of different shape; foragers have relatively larger heads, whereas guards have larger legs. Low variation within each subcaste results in negligible size overlap between guards and foragers, further indicating that they are distinct physical castes. In addition, workers that remove garbage from the nest are of intermediate size, suggesting that they might represent another unrecognized caste. Guards or soldiers are reared in low but sufficient numbers (1?2% of emerging workers), considering that <1% usually perform this task. When challenged by the obligate robber bee Lestrimelitta limao, an important natural enemy, larger workers were able to fight for longer before being defeated by the much larger robber. This discovery opens up opportunities for the comparative study of physical castes in social insects, including the question of why soldiers appear to be so much rarer in bees than in ants or termites. MenosDivision of labor among workers is common in insect societies and is thought to be important in their ecological success. In most species, division of labor is based on age (temporal castes), but workers in some ants and termites show morphological specialization for particular tasks (physical castes). Large-headed soldier ants and termites are well-known examples of this specialization. However, until now there has been no equivalent example of physical worker subcastes in social bees or wasps. Here we provide evidence for a physical soldier subcaste in a bee. In the neotropical stingless bee Tetragonisca angustula, nest defense is performed by two groups of guards, one hovering near the nest entrance and the other standing on the wax entrance tube. We show that both types of guards are 30% heavier than foragers and of different shape; foragers have relatively larger heads, whereas guards have larger legs. Low variation within each subcaste results in negligible size overlap between guards and foragers, further indicating that they are distinct physical castes. In addition, workers that remove garbage from the nest are of intermediate size, suggesting that they might represent another unrecognized caste. Guards or soldiers are reared in low but sufficient numbers (1?2% of emerging workers), considering that <1% usually perform this task. When challenged by the obligate robber bee Lestrimelitta limao, an important natural enemy, larger workers were able to fight for longer b... Mostrar Tudo |
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Palavras-Chave: |
Abelha-sem-ferrão; Defesa; Meliponicultura. |
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Thesagro: |
Colônia. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 02403naa a2200217 a 4500
001 1914703
005 2022-11-11
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1073/pnas.1113398109$2DOI
100 1 $aGRÜTER, C.
245 $aA morphologically specialized soldier caste improves colony defense in a neotropical eusocial bee.$h[electronic resource]
260 $c2012
520 $aDivision of labor among workers is common in insect societies and is thought to be important in their ecological success. In most species, division of labor is based on age (temporal castes), but workers in some ants and termites show morphological specialization for particular tasks (physical castes). Large-headed soldier ants and termites are well-known examples of this specialization. However, until now there has been no equivalent example of physical worker subcastes in social bees or wasps. Here we provide evidence for a physical soldier subcaste in a bee. In the neotropical stingless bee Tetragonisca angustula, nest defense is performed by two groups of guards, one hovering near the nest entrance and the other standing on the wax entrance tube. We show that both types of guards are 30% heavier than foragers and of different shape; foragers have relatively larger heads, whereas guards have larger legs. Low variation within each subcaste results in negligible size overlap between guards and foragers, further indicating that they are distinct physical castes. In addition, workers that remove garbage from the nest are of intermediate size, suggesting that they might represent another unrecognized caste. Guards or soldiers are reared in low but sufficient numbers (1?2% of emerging workers), considering that <1% usually perform this task. When challenged by the obligate robber bee Lestrimelitta limao, an important natural enemy, larger workers were able to fight for longer before being defeated by the much larger robber. This discovery opens up opportunities for the comparative study of physical castes in social insects, including the question of why soldiers appear to be so much rarer in bees than in ants or termites.
650 $aColônia
653 $aAbelha-sem-ferrão
653 $aDefesa
653 $aMeliponicultura
700 1 $aMENEZES, C.
700 1 $aIMPERATRIZ-FONSECA, V. L.
700 1 $aRATNIEKS, F. L. W.
773 $tPNAS$gv. 109, n. 4, p. 1182-11986, Jan. 2012.
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