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Registro Completo |
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
16/03/2020 |
Data da última atualização: |
02/07/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
OLIVEIRA, S. S. de; CAMPOS, T. de; SEBBENN, A. M.; OLIVEIRA, M. V. N. d'. |
Afiliação: |
Sabrina Silva de Oliveira, Universidade Federal do Acre (Ufac); TATIANA DE CAMPOS, CPAF-AC; Alexandre Magno Sebbenn, Instituto Florestal de São Paulo; MARCUS VINICIO NEVES D OLIVEIRA, CPAF-AC. |
Título: |
Using spatial genetic structure of a population of Swietenia macrophylla King to integrate genetic diversity into management strategies in Southwestern Amazon. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Forest Ecology and Management, v. 464, n. 15, 118040, May 2020. |
ISSN: |
0378-1127 |
DOI: |
10.1016/j.foreco.2020.118040 |
Idioma: |
Inglês |
Conteúdo: |
The aims of this study were to investigate the intrapopulation spatial genetic structure (SGS) of a preserved Swietenia macrophylla population in a managed forest in Southwestern Amazon, in Acre state, Brazil, and assess the genetic parameters that underlie the conceptual framework that guides conservation and management strategies. The study was conducted in Annual Production Unit (APU) 3, where 83 adult trees (DBH?40 cm) were mapped (1650 ha). The diameter at breast height (DBH) was measured and the vascular exchange was sampled. Leaf tissues were collected from 187 juvenile individuals within a radius of 20m of adults. The population presented high heterozygosity (Ho) for adult (0.767) and juvenile (0.763) individuals, but significantly high allelic richness (R) and significantly lower fixation index (F) in adults (R =10.3, F =0.048) than juveniles (R =9.3, F= 0.119). The F value significantly higher for juveniles, suggesting selection against inbred individuals between juvenile and adult life stages. SGS was detected for adults up to 300 m. Mating was mainly through outcrossing (0.97-1.0), but some crossing occurred among related trees (0.02-0.16) and were correlated (rpm =0.06-0.22), indicating a mean effective number of pollen donors ranging from 4.5 to 18.2. Pollen dispersal distances reached 3905m (mean of 1472 m), and mean effective pollination neighbor area of 792 ha. The effective population size (Ne) within family (2.73) was lower than expected for random mating populations. The number of trees (m) required for seed collection was estimated at 55 non-inbreed and not related trees to each other. The core collection consisted of 42 (50.6%) adults across the area. These individuals should be included in seed collection as they represent 100% of the total detected genetic diversity. The inclusion of S. macrophylla on the list of species available for exploitation is not indicated, because the species requires cross breeding for its maintenance and logging reduce the Ne and may negatively impact the pattern of genetic diversity. These will significantly increase the risk of genetic erosion and population extinction due to a lack of adaptive ability. Adults serve as pollen donors that ecologically and genetically contribute to the maintenance of gene flow and Ne. Because it is recognized as a threatened species worldwide, and due to the fact that in areas of natural occurrence the species presents low-density and shows difficulty establishing natural regeneration, we recommend that S. macrophylla be protected from selective logging. MenosThe aims of this study were to investigate the intrapopulation spatial genetic structure (SGS) of a preserved Swietenia macrophylla population in a managed forest in Southwestern Amazon, in Acre state, Brazil, and assess the genetic parameters that underlie the conceptual framework that guides conservation and management strategies. The study was conducted in Annual Production Unit (APU) 3, where 83 adult trees (DBH?40 cm) were mapped (1650 ha). The diameter at breast height (DBH) was measured and the vascular exchange was sampled. Leaf tissues were collected from 187 juvenile individuals within a radius of 20m of adults. The population presented high heterozygosity (Ho) for adult (0.767) and juvenile (0.763) individuals, but significantly high allelic richness (R) and significantly lower fixation index (F) in adults (R =10.3, F =0.048) than juveniles (R =9.3, F= 0.119). The F value significantly higher for juveniles, suggesting selection against inbred individuals between juvenile and adult life stages. SGS was detected for adults up to 300 m. Mating was mainly through outcrossing (0.97-1.0), but some crossing occurred among related trees (0.02-0.16) and were correlated (rpm =0.06-0.22), indicating a mean effective number of pollen donors ranging from 4.5 to 18.2. Pollen dispersal distances reached 3905m (mean of 1472 m), and mean effective pollination neighbor area of 792 ha. The effective population size (Ne) within family (2.73) was lower than expected for random mating ... Mostrar Tudo |
Palavras-Chave: |
Acre; Bujari (AC); Estructura poblacional; Estrutura genética espacial; Floresta Estadual do Antimary (AC); Mahogany; Repeticiones de microsatélite; Sena Madureira (AC); Southwestern Amazon; Sudoeste da Amazônia. |
Thesagro: |
Características Agronômicas; Conservação; Genética Vegetal; Marcador Genético; Mogno; Parâmetro Genético; População de Planta; Swietenia Macrophylla. |
Thesaurus Nal: |
Agronomic traits; Genetic markers; Loci; Microsatellite repeats; Population structure. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/211864/1/26982.pdf
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Marc: |
LEADER 04041naa a2200457 a 4500 001 2121251 005 2021-07-02 008 2020 bl uuuu u00u1 u #d 022 $a0378-1127 024 7 $a10.1016/j.foreco.2020.118040$2DOI 100 1 $aOLIVEIRA, S. S. de 245 $aUsing spatial genetic structure of a population of Swietenia macrophylla King to integrate genetic diversity into management strategies in Southwestern Amazon.$h[electronic resource] 260 $c2020 520 $aThe aims of this study were to investigate the intrapopulation spatial genetic structure (SGS) of a preserved Swietenia macrophylla population in a managed forest in Southwestern Amazon, in Acre state, Brazil, and assess the genetic parameters that underlie the conceptual framework that guides conservation and management strategies. The study was conducted in Annual Production Unit (APU) 3, where 83 adult trees (DBH?40 cm) were mapped (1650 ha). The diameter at breast height (DBH) was measured and the vascular exchange was sampled. Leaf tissues were collected from 187 juvenile individuals within a radius of 20m of adults. The population presented high heterozygosity (Ho) for adult (0.767) and juvenile (0.763) individuals, but significantly high allelic richness (R) and significantly lower fixation index (F) in adults (R =10.3, F =0.048) than juveniles (R =9.3, F= 0.119). The F value significantly higher for juveniles, suggesting selection against inbred individuals between juvenile and adult life stages. SGS was detected for adults up to 300 m. Mating was mainly through outcrossing (0.97-1.0), but some crossing occurred among related trees (0.02-0.16) and were correlated (rpm =0.06-0.22), indicating a mean effective number of pollen donors ranging from 4.5 to 18.2. Pollen dispersal distances reached 3905m (mean of 1472 m), and mean effective pollination neighbor area of 792 ha. The effective population size (Ne) within family (2.73) was lower than expected for random mating populations. The number of trees (m) required for seed collection was estimated at 55 non-inbreed and not related trees to each other. The core collection consisted of 42 (50.6%) adults across the area. These individuals should be included in seed collection as they represent 100% of the total detected genetic diversity. The inclusion of S. macrophylla on the list of species available for exploitation is not indicated, because the species requires cross breeding for its maintenance and logging reduce the Ne and may negatively impact the pattern of genetic diversity. These will significantly increase the risk of genetic erosion and population extinction due to a lack of adaptive ability. Adults serve as pollen donors that ecologically and genetically contribute to the maintenance of gene flow and Ne. Because it is recognized as a threatened species worldwide, and due to the fact that in areas of natural occurrence the species presents low-density and shows difficulty establishing natural regeneration, we recommend that S. macrophylla be protected from selective logging. 650 $aAgronomic traits 650 $aGenetic markers 650 $aLoci 650 $aMicrosatellite repeats 650 $aPopulation structure 650 $aCaracterísticas Agronômicas 650 $aConservação 650 $aGenética Vegetal 650 $aMarcador Genético 650 $aMogno 650 $aParâmetro Genético 650 $aPopulação de Planta 650 $aSwietenia Macrophylla 653 $aAcre 653 $aBujari (AC) 653 $aEstructura poblacional 653 $aEstrutura genética espacial 653 $aFloresta Estadual do Antimary (AC) 653 $aMahogany 653 $aRepeticiones de microsatélite 653 $aSena Madureira (AC) 653 $aSouthwestern Amazon 653 $aSudoeste da Amazônia 700 1 $aCAMPOS, T. de 700 1 $aSEBBENN, A. M. 700 1 $aOLIVEIRA, M. V. N. d' 773 $tForest Ecology and Management$gv. 464, n. 15, 118040, May 2020.
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Embrapa Acre (CPAF-AC) |
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Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
Data corrente: |
11/08/2022 |
Data da última atualização: |
11/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
DIAS, J. H.; GONCALVES, J. D.; ARRAIS, A. M.; SOUZA-FABJAN, J. M. G.; BASTOS R.; BATISTA, R. I. T. P.; SIQUEIRA, L. G. B.; OLIVEIRA, M. E. F.; FONSECA, J. F. da. |
Afiliação: |
JENNIFFER HAUSCHILDT DIAS, Universidade Federal de Viçosa; JOEDSON DANTAS GONÇALVES, Universidade Estadual Paulista; ALINE MATOS ARRAIS, Universidade Federal Rural do Rio de Janeiro; JOANNA MARIA GONSALVES SOUZA-FABJAN, Universidade Federal Fluminense; RODOLFO BASTOS, Universidade Estadual do Norte Fluminense Darcy; RIBRIO IVAN TAVARES PEREIRA BATISTA, Universidade Federal Fluminense; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; MARIA ERICA F. OLIVEIRA, Universidade Estadual Paulista; JEFERSON FERREIRA DA FONSECA, CNPC. |
Título: |
Effects of different doses of estradiol benzoate used in a cervical relaxation protocol on the success of non-surgical embryo recovery and luteal function in superovulated ewes. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Domestic Animal Endocrinology, v. 82, 106751, 2023. |
DOI: |
https://doi.org/10.1016/j.domaniend.2022.106751 |
Idioma: |
Inglês |
Conteúdo: |
This study investigated the effectiveness of different doses of estradiol benzoate (EB) to promote cervical relaxation and their effects on luteal function and outcomes of non-surgical embryo recovery (NSER) in sheep. Multiparous (MULT) and nulliparous (NULL) crossbred Lacaune X Santa Inês ewes were superovulated and naturally bred. Seven days after progesterone withdrawal, females were randomly assigned to one of three distinct cervical relaxation protocols, consisting of i.m. treatment with 37.5 μg d-cloprostenol and different doses of EB: 0.0 mg (0.0EB group; n = 3 NULL and 14 MULT); 0.5 mg (0.5EB group; n = 4 NULL and 12 MULT) or 1.0 mg (1.0EB group, n = 6 NULL and 11 MULT) 16 h before NSER. All ewes received 50 IU of oxytocin 20 min before NSER (D17). Blood samples were collected and ultrasound exams (B-mode and color Doppler) were performed at two timepoints: immediately before d-cloprostenol and EB treatments and prior to NSER. Estrous behavior, corpora lutea count and NSER success outcomes were not affected by EB treatments nor parity (P > 0.05). Embryo recovery rate was greater for ewes in the 0.5EB group and in the NULL ewes (P < 0.05). Ovarian biometrics differed between the two evaluation timepoints in all groups (P < 0.05). Plasma estradiol increased over time, reaching a significant greater level in 1.0EB ewes compared to controls on D17 (P < 0.05), whereas progesterone concentrations decreased over time in all groups (P > 0.05). In conclusion, treatments did not affect NSER success but they did affect luteal function by altering P4 and E2 concentrations.Therefore, the NSER technique can be successfully performed in ewes with or without prior treatment with EB. MenosThis study investigated the effectiveness of different doses of estradiol benzoate (EB) to promote cervical relaxation and their effects on luteal function and outcomes of non-surgical embryo recovery (NSER) in sheep. Multiparous (MULT) and nulliparous (NULL) crossbred Lacaune X Santa Inês ewes were superovulated and naturally bred. Seven days after progesterone withdrawal, females were randomly assigned to one of three distinct cervical relaxation protocols, consisting of i.m. treatment with 37.5 μg d-cloprostenol and different doses of EB: 0.0 mg (0.0EB group; n = 3 NULL and 14 MULT); 0.5 mg (0.5EB group; n = 4 NULL and 12 MULT) or 1.0 mg (1.0EB group, n = 6 NULL and 11 MULT) 16 h before NSER. All ewes received 50 IU of oxytocin 20 min before NSER (D17). Blood samples were collected and ultrasound exams (B-mode and color Doppler) were performed at two timepoints: immediately before d-cloprostenol and EB treatments and prior to NSER. Estrous behavior, corpora lutea count and NSER success outcomes were not affected by EB treatments nor parity (P > 0.05). Embryo recovery rate was greater for ewes in the 0.5EB group and in the NULL ewes (P < 0.05). Ovarian biometrics differed between the two evaluation timepoints in all groups (P < 0.05). Plasma estradiol increased over time, reaching a significant greater level in 1.0EB ewes compared to controls on D17 (P < 0.05), whereas progesterone concentrations decreased over time in all groups (P > 0.05). In conclusion, treatments ... Mostrar Tudo |
Palavras-Chave: |
Cervical dilation; Dilatação cervical; In vivo embryo production; Non surgical embryo recovery; NSER; Superovulated females. |
Thesagro: |
Ovelha; Ovino; Progesterona. |
Thesaurus NAL: |
Animal reproduction; Embryo transfer; Progesterone; Sheep; Superovulation. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02971naa a2200397 a 4500 001 2145373 005 2022-08-11 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.domaniend.2022.106751$2DOI 100 1 $aDIAS, J. H. 245 $aEffects of different doses of estradiol benzoate used in a cervical relaxation protocol on the success of non-surgical embryo recovery and luteal function in superovulated ewes.$h[electronic resource] 260 $c2023 520 $aThis study investigated the effectiveness of different doses of estradiol benzoate (EB) to promote cervical relaxation and their effects on luteal function and outcomes of non-surgical embryo recovery (NSER) in sheep. Multiparous (MULT) and nulliparous (NULL) crossbred Lacaune X Santa Inês ewes were superovulated and naturally bred. Seven days after progesterone withdrawal, females were randomly assigned to one of three distinct cervical relaxation protocols, consisting of i.m. treatment with 37.5 μg d-cloprostenol and different doses of EB: 0.0 mg (0.0EB group; n = 3 NULL and 14 MULT); 0.5 mg (0.5EB group; n = 4 NULL and 12 MULT) or 1.0 mg (1.0EB group, n = 6 NULL and 11 MULT) 16 h before NSER. All ewes received 50 IU of oxytocin 20 min before NSER (D17). Blood samples were collected and ultrasound exams (B-mode and color Doppler) were performed at two timepoints: immediately before d-cloprostenol and EB treatments and prior to NSER. Estrous behavior, corpora lutea count and NSER success outcomes were not affected by EB treatments nor parity (P > 0.05). Embryo recovery rate was greater for ewes in the 0.5EB group and in the NULL ewes (P < 0.05). Ovarian biometrics differed between the two evaluation timepoints in all groups (P < 0.05). Plasma estradiol increased over time, reaching a significant greater level in 1.0EB ewes compared to controls on D17 (P < 0.05), whereas progesterone concentrations decreased over time in all groups (P > 0.05). In conclusion, treatments did not affect NSER success but they did affect luteal function by altering P4 and E2 concentrations.Therefore, the NSER technique can be successfully performed in ewes with or without prior treatment with EB. 650 $aAnimal reproduction 650 $aEmbryo transfer 650 $aProgesterone 650 $aSheep 650 $aSuperovulation 650 $aOvelha 650 $aOvino 650 $aProgesterona 653 $aCervical dilation 653 $aDilatação cervical 653 $aIn vivo embryo production 653 $aNon surgical embryo recovery 653 $aNSER 653 $aSuperovulated females 700 1 $aGONCALVES, J. D. 700 1 $aARRAIS, A. M. 700 1 $aSOUZA-FABJAN, J. M. G. 700 1 $aBASTOS R. 700 1 $aBATISTA, R. I. T. P. 700 1 $aSIQUEIRA, L. G. B. 700 1 $aOLIVEIRA, M. E. F. 700 1 $aFONSECA, J. F. da 773 $tDomestic Animal Endocrinology$gv. 82, 106751, 2023.
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