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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
21/06/1993 |
Data da última atualização: |
18/12/2019 |
Autoria: |
MORAES, G. J.; McMURTRY, J. A. |
Afiliação: |
GILBERTO JOSE de MORAES, EMBRAPA-CPATSA. |
Título: |
Effect of temperature and sperm supply on the reproductive potential of Tetranychus evansi (Acari: Tetranychidae). |
Ano de publicação: |
1987 |
Fonte/Imprenta: |
Experimental & Applied Acarology, v.3, p.95-107, 1987. |
Idioma: |
Inglês |
Conteúdo: |
The biology of Tetranychus enancy Baker and Pritchard was studied at five different temperatures on excised leaves of Solanum douglasii Dunal. The theoretical lower theoretical lower threshold temperature of development was ca. 13 C. The combined immature stages required ca. 148 day-degrees for completion. Progressively later initiation of mating resulted in higher peak proportions of females produced, up to an 8-day period between emergence and amting at 30 C. The proportions of male offspring always increased towards the end of the oviposition period, apparently because of sperm depletion. The calculated intrinsic rate of increase was highest (0.432) at 35 C, the highest temperature tested. At that same temperature, dayly oviposition rate and net reproductive rate were maximum (9.5 and 111.77, respectively), and mean generation and doubling time were minimum (10.92 and 1.6 days, respectively). |
Palavras-Chave: |
Sex; Variation. |
Thesagro: |
Tetranychidae. |
Thesaurus Nal: |
Acari; reproduction; temperature; Tetranychus evansi. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01545naa a2200217 a 4500 001 1010548 005 2019-12-18 008 1987 bl uuuu u00u1 u #d 100 1 $aMORAES, G. J. 245 $aEffect of temperature and sperm supply on the reproductive potential of Tetranychus evansi (Acari$bTetranychidae).$h[electronic resource] 260 $c1987 520 $aThe biology of Tetranychus enancy Baker and Pritchard was studied at five different temperatures on excised leaves of Solanum douglasii Dunal. The theoretical lower theoretical lower threshold temperature of development was ca. 13 C. The combined immature stages required ca. 148 day-degrees for completion. Progressively later initiation of mating resulted in higher peak proportions of females produced, up to an 8-day period between emergence and amting at 30 C. The proportions of male offspring always increased towards the end of the oviposition period, apparently because of sperm depletion. The calculated intrinsic rate of increase was highest (0.432) at 35 C, the highest temperature tested. At that same temperature, dayly oviposition rate and net reproductive rate were maximum (9.5 and 111.77, respectively), and mean generation and doubling time were minimum (10.92 and 1.6 days, respectively). 650 $aAcari 650 $areproduction 650 $atemperature 650 $aTetranychus evansi 650 $aTetranychidae 653 $aSex 653 $aVariation 700 1 $aMcMURTRY, J. A. 773 $tExperimental & Applied Acarology$gv.3, p.95-107, 1987.
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| Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
26/11/2018 |
Data da última atualização: |
26/11/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
PAIVA, J. T.; RESENDE, M. D. V. de; RESENDE, R. T.; OLIVEIRA, H. R. de; SILVA, H. T.; CAETANO, G. C.; LOPES, P. S.; SILVA, F. F. |
Afiliação: |
J. T. Paiva, UFV; MARCOS DEON VILELA DE RESENDE, CNPF; R. T. Resende, UFV; H. R. de Oliveira, UFV; H. T. Silva, UFV; G. C. Caetano, UFV; P. S. Lopes, UFV; F. F. Silva, UFV. |
Título: |
Transgenerational epigenetic variance for body weight in meat quails. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, v. 135, n. 3, p. 178-185, June 2018. |
DOI: |
10.1111/jbg.12329 |
Idioma: |
Inglês |
Conteúdo: |
We aimed to estimate transgenerational epigenetic variance for body weight using genealogical and phenotypic information in meat quails. Animals were individually weighted from 1 week after hatching, with weight records at 7, 14, 21, 28, 35 and 42 days of age (BW7, BW14, BW21, BW28, BW35 and BW42, respectively). Single-trait genetic analyses were performed using mixed models with random epigenetic effects. Variance components were estimated by the restricted maximum likelihood method. A grid search for values of autorecursive parameter (k) ranging from 0 to 0.5 was used in the variance component estimation. This parameter is directly related to the reset coefficient (m) and the epigenetic coefficient of transmissibility (1-m). The epigenetic effect was only significant for BW7. Direct heritability estimates for body weight ranged in magnitude (from 0.15 to 0.26), with the highest estimate for BW7. Epigenetic heritability was 0.10 for BW7, and close to zero for the other body weights. The inclusion of the epigenetic effect in the model helped to explain the residual and non-Mendelian variability of initial body weight in meat quails. |
Palavras-Chave: |
Epigenome; Non-Mendelian inheritance; Reset coefficient. |
Thesagro: |
Codorna; Coturnix Coturnix Japonica. |
Categoria do assunto: |
G Melhoramento Genético |
Marc: |
LEADER 01971naa a2200277 a 4500 001 2100042 005 2018-11-26 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1111/jbg.12329$2DOI 100 1 $aPAIVA, J. T. 245 $aTransgenerational epigenetic variance for body weight in meat quails.$h[electronic resource] 260 $c2018 520 $aWe aimed to estimate transgenerational epigenetic variance for body weight using genealogical and phenotypic information in meat quails. Animals were individually weighted from 1 week after hatching, with weight records at 7, 14, 21, 28, 35 and 42 days of age (BW7, BW14, BW21, BW28, BW35 and BW42, respectively). Single-trait genetic analyses were performed using mixed models with random epigenetic effects. Variance components were estimated by the restricted maximum likelihood method. A grid search for values of autorecursive parameter (k) ranging from 0 to 0.5 was used in the variance component estimation. This parameter is directly related to the reset coefficient (m) and the epigenetic coefficient of transmissibility (1-m). The epigenetic effect was only significant for BW7. Direct heritability estimates for body weight ranged in magnitude (from 0.15 to 0.26), with the highest estimate for BW7. Epigenetic heritability was 0.10 for BW7, and close to zero for the other body weights. The inclusion of the epigenetic effect in the model helped to explain the residual and non-Mendelian variability of initial body weight in meat quails. 650 $aCodorna 650 $aCoturnix Coturnix Japonica 653 $aEpigenome 653 $aNon-Mendelian inheritance 653 $aReset coefficient 700 1 $aRESENDE, M. D. V. de 700 1 $aRESENDE, R. T. 700 1 $aOLIVEIRA, H. R. de 700 1 $aSILVA, H. T. 700 1 $aCAETANO, G. C. 700 1 $aLOPES, P. S. 700 1 $aSILVA, F. F. 773 $tJournal of Animal Breeding and Genetics$gv. 135, n. 3, p. 178-185, June 2018.
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