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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
29/03/1996 |
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Data da última atualização: |
01/06/2023 |
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Autoria: |
O'SHEA, J. D.; WRIGHT, P. J. |
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Título: |
Regression of the corpus luteum of pregnancy following parturition in the ewe. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Acta Anatomica, v. 122, n. 2, p. 69-76, 1985. |
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DOI: |
10.1159/000145985. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Corpora lutea (CL) of pregnancy from single-lambing ewes were examined by light and electron microscopy within 24 h and at 8, 15, 23, 31 and 41 days after parturition (2 ewes per stage). Within 24 h of parturition the structure of the CL was well preserved and both large and small luteal cells, characteristic of this species, were present in substantial numbers. However, both types of luteal cell contained numerous cytoplasmic lipid droplets, and smooth endoplasmic reticulum and secretory granules in large luteal cells were less prominent than in normal functional CL of cyclic ewes. Leucocytic infiltration, and death of some luteal and endothelial cells, were also observed at this stage. Further regression of the CL progressed slowly, and lipid-rich large luteal cells were still readily recognisable 15 days after parturition. The size of the CL declined progressively, and the proportion of tissue occupied by intercellular substances increased. Corpora albicantia approximately equal to 3-4 mm in diameter were still recognisable 41 days after parturition. It was concluded that luteal regression post partum progresses much less rapidly than at the end of the oestrous cycle. |
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Palavras-Chave: |
Regressao luteal. |
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Thesagro: |
Ovino; Prenhez; Reprodução. |
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Thesaurus Nal: |
Corpus luteum; Obstetric labor; Physiology; Pregnancy; Reproduction; Sheep; Ultrastructure. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01944naa a2200277 a 4500
001 1523057
005 2023-06-01
008 1985 bl uuuu u00u1 u #d
024 7 $a10.1159/000145985.$2DOI
100 1 $aO'SHEA, J. D.
245 $aRegression of the corpus luteum of pregnancy following parturition in the ewe.$h[electronic resource]
260 $c1985
520 $aAbstract: Corpora lutea (CL) of pregnancy from single-lambing ewes were examined by light and electron microscopy within 24 h and at 8, 15, 23, 31 and 41 days after parturition (2 ewes per stage). Within 24 h of parturition the structure of the CL was well preserved and both large and small luteal cells, characteristic of this species, were present in substantial numbers. However, both types of luteal cell contained numerous cytoplasmic lipid droplets, and smooth endoplasmic reticulum and secretory granules in large luteal cells were less prominent than in normal functional CL of cyclic ewes. Leucocytic infiltration, and death of some luteal and endothelial cells, were also observed at this stage. Further regression of the CL progressed slowly, and lipid-rich large luteal cells were still readily recognisable 15 days after parturition. The size of the CL declined progressively, and the proportion of tissue occupied by intercellular substances increased. Corpora albicantia approximately equal to 3-4 mm in diameter were still recognisable 41 days after parturition. It was concluded that luteal regression post partum progresses much less rapidly than at the end of the oestrous cycle.
650 $aCorpus luteum
650 $aObstetric labor
650 $aPhysiology
650 $aPregnancy
650 $aReproduction
650 $aSheep
650 $aUltrastructure
650 $aOvino
650 $aPrenhez
650 $aReprodução
653 $aRegressao luteal
700 1 $aWRIGHT, P. J.
773 $tActa Anatomica$gv. 122, n. 2, p. 69-76, 1985.
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Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
03/10/2022 |
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Data da última atualização: |
13/02/2023 |
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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: |
GAVA, C. A. T.; LEAL, C. M.; SÁ, A. V. de; PARANHOS, B. A. G. |
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Afiliação: |
CARLOS ALBERTO TUAO GAVA, CPATSA; CLAYTON MOREIRA LEAL, UNEB; ALICIA VIEIRA DE SÁ, UPE; BEATRIZ AGUIAR GIORDANO PARANHOS, CPATSA. |
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Título: |
Selecting thermal tolerant strains of entomopathogenic fungi to control Ceratitis capitata (Wiedeman) in tropical semi-arid conditions. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Biological Control, v. 176, 105062, Dec. 2022. |
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DOI: |
https://doi.org/10.1016/j.biocontrol.2022.105062 |
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Idioma: |
Inglês |
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Conteúdo: |
Although it is usual, using constant temperature to select thermo-tolerant entomopathogen (EF) strains could discard potentially efficient biocontrol agents (BCA). The objectives of this work were to select virulent EF against C. capitata and evaluate the effect of continual and fluctuating temperature on fungal development and virulence. Initial experiments compared the effect of constant temperatures (CT) (20, 25, 30, 35, and 38 ?C) and simulated intraday temperature variation (SIV) (20?38 ?C) over conidial germination, mycelial growth, and insect mortality. Temperatures ? 35 ?C in the CT experiments significantly reduced conidial germination, and the strains of Beauveria bassiana BbLCB81 and BbLCB289 showed the highest conidial germination and mycelial growth. SIV also caused a significant effect, and M. anisopliae MaLCB62 showed the highest conidial germination and mycelial growth. Applying EF strains as toxic baits in CT showed that the highest mortality occurred at 30 ?C, and BbLCB62 and BbLCB289 showed the largest insect mortality at 38 ?C. Survival analysis showed a slight increase in the average survival time (ST50) at 30 ?C. In SIV conditions, MaLCB56 and BbLCB289 were highly virulent. In a field cage experiment at a warmer temperature, BbLCB62 was the most virulent strain according to the M-C test comparing survival curves. However, confirmed accumulated mortality on the 10th day was similar to the moderately tolerant BbLCB289 (Tukey, p < 0.05). During winter, all EF strains showed similar mortality on 10th day (Tukey, p < 0.05), but a significant difference in the survival analysis. EF strains with mild temperature tolerance can be applied in seasons with high temperatures, and BbLCB62 and BbLCB289 were selected as potential biocontrol agents against C. capitata. MenosAlthough it is usual, using constant temperature to select thermo-tolerant entomopathogen (EF) strains could discard potentially efficient biocontrol agents (BCA). The objectives of this work were to select virulent EF against C. capitata and evaluate the effect of continual and fluctuating temperature on fungal development and virulence. Initial experiments compared the effect of constant temperatures (CT) (20, 25, 30, 35, and 38 ?C) and simulated intraday temperature variation (SIV) (20?38 ?C) over conidial germination, mycelial growth, and insect mortality. Temperatures ? 35 ?C in the CT experiments significantly reduced conidial germination, and the strains of Beauveria bassiana BbLCB81 and BbLCB289 showed the highest conidial germination and mycelial growth. SIV also caused a significant effect, and M. anisopliae MaLCB62 showed the highest conidial germination and mycelial growth. Applying EF strains as toxic baits in CT showed that the highest mortality occurred at 30 ?C, and BbLCB62 and BbLCB289 showed the largest insect mortality at 38 ?C. Survival analysis showed a slight increase in the average survival time (ST50) at 30 ?C. In SIV conditions, MaLCB56 and BbLCB289 were highly virulent. In a field cage experiment at a warmer temperature, BbLCB62 was the most virulent strain according to the M-C test comparing survival curves. However, confirmed accumulated mortality on the 10th day was similar to the moderately tolerant BbLCB289 (Tukey, p < 0.05). During winter, all... Mostrar Tudo |
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Palavras-Chave: |
Crescimento e virulência; Temperatura constante versus temperatura variável; Tolerância térmica. |
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Thesagro: |
Beauveria Bassiana; Ceratitis Capitata; Controle Biológico; Inseto; Metarhizium Anisopliae; Mosca das Frutas; Vírus. |
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Thesaurus NAL: |
Biological control; Ceratitis capitata Yoyo virus. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1147078/1/Selecting-thermal-tolerant-strains-of-entomopathogenic-fungi-to-control-2022.pdf
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Marc: |
LEADER 02852naa a2200313 a 4500
001 2147078
005 2023-02-13
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.biocontrol.2022.105062$2DOI
100 1 $aGAVA, C. A. T.
245 $aSelecting thermal tolerant strains of entomopathogenic fungi to control Ceratitis capitata (Wiedeman) in tropical semi-arid conditions.$h[electronic resource]
260 $c2022
520 $aAlthough it is usual, using constant temperature to select thermo-tolerant entomopathogen (EF) strains could discard potentially efficient biocontrol agents (BCA). The objectives of this work were to select virulent EF against C. capitata and evaluate the effect of continual and fluctuating temperature on fungal development and virulence. Initial experiments compared the effect of constant temperatures (CT) (20, 25, 30, 35, and 38 ?C) and simulated intraday temperature variation (SIV) (20?38 ?C) over conidial germination, mycelial growth, and insect mortality. Temperatures ? 35 ?C in the CT experiments significantly reduced conidial germination, and the strains of Beauveria bassiana BbLCB81 and BbLCB289 showed the highest conidial germination and mycelial growth. SIV also caused a significant effect, and M. anisopliae MaLCB62 showed the highest conidial germination and mycelial growth. Applying EF strains as toxic baits in CT showed that the highest mortality occurred at 30 ?C, and BbLCB62 and BbLCB289 showed the largest insect mortality at 38 ?C. Survival analysis showed a slight increase in the average survival time (ST50) at 30 ?C. In SIV conditions, MaLCB56 and BbLCB289 were highly virulent. In a field cage experiment at a warmer temperature, BbLCB62 was the most virulent strain according to the M-C test comparing survival curves. However, confirmed accumulated mortality on the 10th day was similar to the moderately tolerant BbLCB289 (Tukey, p < 0.05). During winter, all EF strains showed similar mortality on 10th day (Tukey, p < 0.05), but a significant difference in the survival analysis. EF strains with mild temperature tolerance can be applied in seasons with high temperatures, and BbLCB62 and BbLCB289 were selected as potential biocontrol agents against C. capitata.
650 $aBiological control
650 $aCeratitis capitata Yoyo virus
650 $aBeauveria Bassiana
650 $aCeratitis Capitata
650 $aControle Biológico
650 $aInseto
650 $aMetarhizium Anisopliae
650 $aMosca das Frutas
650 $aVírus
653 $aCrescimento e virulência
653 $aTemperatura constante versus temperatura variável
653 $aTolerância térmica
700 1 $aLEAL, C. M.
700 1 $aSÁ, A. V. de
700 1 $aPARANHOS, B. A. G.
773 $tBiological Control$gv. 176, 105062, Dec. 2022.
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