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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Tabuleiros Costeiros. |
Data corrente: |
17/09/2019 |
Data da última atualização: |
05/09/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CHAVES, M. S.; LUZ, V. B.; FERREIRA-SILVA, J. C.; MELO, E. de O.; PAIVA, S. R.; BARROS, I. de; BARTOLOMEU, C. C.; AZEVEDO, H. C.; OLIVEIRA, M. A. L. |
Afiliação: |
Maiana Silva Chaves, Universidade Federal de Pernambuco; Valesca Barreto Luz, Centro Universitário CESMAC, Maceió; José Carlos Ferreira-Silva, Universidade Federal de Pernambuco; EDUARDO DE OLIVEIRA MELO, Cenargen; Samuel Rezende Paiva, UFT; INACIO DE BARROS, CNPGL; Cláudio Coutinho Bartolomeu, Universidade Federal de Pernambuco; HYMERSON COSTA AZEVEDO, CPATC; Marcos Antonio Lemos Oliveira, Universidade Federal de Pernambuco. |
Título: |
Ovarian and follicular variables used to determine ewes with different FecGE genotypes. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Animal Reproduction Science, v. 208, 2019, 106117 |
Páginas: |
7 p. |
DOI: |
https://doi.org/10.1016/j.anireprosci.2019.106117 |
Idioma: |
Inglês |
Conteúdo: |
Abstract
Based on ovarian and follicular variables, there was determination of ewes with different FecGE genotypes. Based on the FecGE genotype, 65 Santa Inês ewes were assigned to three experimental groups: homozygous wild-type (n = 25; FecG+/+), mutant heterozygous (n = 27; FecG+/E) and mutant homozygous (n = 13; FecGE/E). The ewe?s ovaries were weighed and measured, then the follicles (oocyte, nucleus and nucleolus) were histologically evaluated for morphometry and morphology. Morphologically normal follicles, in the primordial and transitional stages, explained 70.18% of the variability morphological characteristics between mutant and wild-type ewes. Conducting the morphometric evaluation resulted in a more precise determination of the genotype groups when there was assessment of the primordial and secondary follicular developmental stages. The diameter of the oocyte and the oocyte nucleus of the primordial follicles explained 36.76% of the variability in follicular morphology between ewes with the mutation and those with the wildtype group. Similarly, the core diameter of oocytes in secondary follicles explained 10.63% of the variability in follicular morphology among FecGE/E, FecG+/E and FecG+/+ ewes. Thus, morphologically normal follicles in the primordial and transitional stages of development are the variables that allow for a more precise differentiation of Santa Inês ewes with the FecGE mutation. These variables may be evaluated to make more efficient the adoption of biotechniques that when conducted there is utilisation of follicles in the initial developmental stages as a physiological basis for classifying whether specific follicles are useful when conducting the techniques. MenosAbstract
Based on ovarian and follicular variables, there was determination of ewes with different FecGE genotypes. Based on the FecGE genotype, 65 Santa Inês ewes were assigned to three experimental groups: homozygous wild-type (n = 25; FecG+/+), mutant heterozygous (n = 27; FecG+/E) and mutant homozygous (n = 13; FecGE/E). The ewe?s ovaries were weighed and measured, then the follicles (oocyte, nucleus and nucleolus) were histologically evaluated for morphometry and morphology. Morphologically normal follicles, in the primordial and transitional stages, explained 70.18% of the variability morphological characteristics between mutant and wild-type ewes. Conducting the morphometric evaluation resulted in a more precise determination of the genotype groups when there was assessment of the primordial and secondary follicular developmental stages. The diameter of the oocyte and the oocyte nucleus of the primordial follicles explained 36.76% of the variability in follicular morphology between ewes with the mutation and those with the wildtype group. Similarly, the core diameter of oocytes in secondary follicles explained 10.63% of the variability in follicular morphology among FecGE/E, FecG+/E and FecG+/+ ewes. Thus, morphologically normal follicles in the primordial and transitional stages of development are the variables that allow for a more precise differentiation of Santa Inês ewes with the FecGE mutation. These variables may be evaluated... Mostrar Tudo |
Palavras-Chave: |
GDF-9; Ovine; Prolificacy. |
Thesaurus Nal: |
Ovulation; Polymorphism. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02612naa a2200301 a 4500 001 2112265 005 2022-09-05 008 2019 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.anireprosci.2019.106117$2DOI 100 1 $aCHAVES, M. S. 245 $aOvarian and follicular variables used to determine ewes with different FecGE genotypes.$h[electronic resource] 260 $c2019 300 $a7 p. 520 $aAbstract Based on ovarian and follicular variables, there was determination of ewes with different FecGE genotypes. Based on the FecGE genotype, 65 Santa Inês ewes were assigned to three experimental groups: homozygous wild-type (n = 25; FecG+/+), mutant heterozygous (n = 27; FecG+/E) and mutant homozygous (n = 13; FecGE/E). The ewe?s ovaries were weighed and measured, then the follicles (oocyte, nucleus and nucleolus) were histologically evaluated for morphometry and morphology. Morphologically normal follicles, in the primordial and transitional stages, explained 70.18% of the variability morphological characteristics between mutant and wild-type ewes. Conducting the morphometric evaluation resulted in a more precise determination of the genotype groups when there was assessment of the primordial and secondary follicular developmental stages. The diameter of the oocyte and the oocyte nucleus of the primordial follicles explained 36.76% of the variability in follicular morphology between ewes with the mutation and those with the wildtype group. Similarly, the core diameter of oocytes in secondary follicles explained 10.63% of the variability in follicular morphology among FecGE/E, FecG+/E and FecG+/+ ewes. Thus, morphologically normal follicles in the primordial and transitional stages of development are the variables that allow for a more precise differentiation of Santa Inês ewes with the FecGE mutation. These variables may be evaluated to make more efficient the adoption of biotechniques that when conducted there is utilisation of follicles in the initial developmental stages as a physiological basis for classifying whether specific follicles are useful when conducting the techniques. 650 $aOvulation 650 $aPolymorphism 653 $aGDF-9 653 $aOvine 653 $aProlificacy 700 1 $aLUZ, V. B. 700 1 $aFERREIRA-SILVA, J. C. 700 1 $aMELO, E. de O. 700 1 $aPAIVA, S. R. 700 1 $aBARROS, I. de 700 1 $aBARTOLOMEU, C. C. 700 1 $aAZEVEDO, H. C. 700 1 $aOLIVEIRA, M. A. L. 773 $tAnimal Reproduction Science$gv. 208, 2019, 106117
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Embrapa Gado de Leite (CNPGL) |
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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. |
Data corrente: |
13/12/2021 |
Data da última atualização: |
20/01/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
BRITO, T. de F.; PINTO, N. S.; PHIFER, C. C.; KNOWLTON, J. L.; CONTRERA, F. A. L.; MAUES, M. M.; SILVA, D. P. |
Afiliação: |
THALINE DE FREITAS BRITO, PÓS-GRADUANDA UFPA/MPEG; NELSON S. PINTO, Centro Universitário UniAraguaia; COLIN C. PHIFER, Michigan Technological University; JESSIE L. KNOWLTON, Wheaton College; FELIPE A. L. CONTRERA, UFPA; MARCIA MOTTA MAUES, CPATU; DANIEL P. SILVA, Instituto Federal Goiano. |
Título: |
Orchid bees (Apidae, Euglossini) from Oil Palm Plantations in Eastern Amazon Have Larger but Not Asymmetrical Wings. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Neotropical Entomology, v. 50, p. 388-397, 2021. |
DOI: |
https://doi.org/10.1007/s13744-021-00864-4 |
Idioma: |
Inglês |
Conteúdo: |
Phenotypic variation in both morphology and symmetry of individuals may appear due to environmental stress caused by land-use changes. Here, we evaluated fluctuating asymmetry (FA) and wing size variations of two orchid bee species, Euglossa ignita Smith, 1874 and Eulaema meriana (Olivier, 1789), comparing 11 wing traits. We sampled the individuals from legal reserves (LR), areas of permanent protection (APP), and oil palm plantations (PALM) in Eastern Amazonia. We calculated FA as the absolute difference between the wing measurements made in the right and left wings of specimens and both species? wing size. We corrected each FA measure for possible directional asymmetry bias by subtracting the mean value of the mean FA signed difference to each FA measure. We compared FA and the size of each wing trait of each species between land-use types using one-way ANOVAs. We found no effect of FA between land-use types, but we observed individuals of both species from PALM areas having larger wings than those from LR areas. Our results demonstrate that there seems to be a pressure exerted by land-use change associated with palm oil cultivation favoring individuals with larger wings, although both species had shown substantial permeability of oil palm. |
Thesagro: |
Abelha; Reserva Florestal; Uso da Terra. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02009naa a2200241 a 4500 001 2137690 005 2022-01-20 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s13744-021-00864-4$2DOI 100 1 $aBRITO, T. de F. 245 $aOrchid bees (Apidae, Euglossini) from Oil Palm Plantations in Eastern Amazon Have Larger but Not Asymmetrical Wings.$h[electronic resource] 260 $c2021 520 $aPhenotypic variation in both morphology and symmetry of individuals may appear due to environmental stress caused by land-use changes. Here, we evaluated fluctuating asymmetry (FA) and wing size variations of two orchid bee species, Euglossa ignita Smith, 1874 and Eulaema meriana (Olivier, 1789), comparing 11 wing traits. We sampled the individuals from legal reserves (LR), areas of permanent protection (APP), and oil palm plantations (PALM) in Eastern Amazonia. We calculated FA as the absolute difference between the wing measurements made in the right and left wings of specimens and both species? wing size. We corrected each FA measure for possible directional asymmetry bias by subtracting the mean value of the mean FA signed difference to each FA measure. We compared FA and the size of each wing trait of each species between land-use types using one-way ANOVAs. We found no effect of FA between land-use types, but we observed individuals of both species from PALM areas having larger wings than those from LR areas. Our results demonstrate that there seems to be a pressure exerted by land-use change associated with palm oil cultivation favoring individuals with larger wings, although both species had shown substantial permeability of oil palm. 650 $aAbelha 650 $aReserva Florestal 650 $aUso da Terra 700 1 $aPINTO, N. S. 700 1 $aPHIFER, C. C. 700 1 $aKNOWLTON, J. L. 700 1 $aCONTRERA, F. A. L. 700 1 $aMAUES, M. M. 700 1 $aSILVA, D. P. 773 $tNeotropical Entomology$gv. 50, p. 388-397, 2021.
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