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1.
Braz. j. biol ; 82: e242334, 2022. tab, graf
Artigo em Inglês | LILACS-Express | MEDLINE, LILACSEXPRESS | ID: biblio-1278515

RESUMO

ABSTRACT Microhabitat factors associated with the habitat of barking deer (Muntiacus vaginalis) were examined and compared between summer and winter seasons. Habitat characteristics and preferred habitat were measured by locating direct and indirect signs. To quantify the habitat utilization of barking deer, each selected study site was sampled for floral diversity from 2015 to 2017. Quadrats were deployed along transect lines to determine seasonal distribution. Barking deer were not evenly distributed across vegetation types in the study area; they occurred more often in the broad-leaved forest than in Chir pine forest, at an elevational range of 550-850 m, in thick vegetation on steep slopes. The most preferred habitat included trees and shrubs with 30% and 69% cover, respectively. Barking deer avoided thicker tree cover, possibly as it hinders movement and escape from predators. No significant difference (χ2 = 6.37, df = 3, p = 0.19) in seasonal vegetation cover was recorded.


RESUMO Fatores de micro-hábitat associados ao hábitat do veado (Muntiacus vaginalis) foram examinados e comparados entre as estações de verão e inverno. As características do hábitat e o hábitat preferido foram medidos, localizando sinais diretos e indiretos. Para quantificar a utilização do hábitat de cervos-latidos, cada local de estudo selecionado foi amostrado para a diversidade floral de 2015 a 2017. Quadrats foram implantados ao longo de linhas de transecto para determinar a distribuição sazonal., Veados-latidos não foram distribuídos uniformemente pelos tipos de vegetação na área de estudo; ocorreram com mais frequência na floresta de folhas largas do que na floresta de pinheiros Chir, em uma faixa de elevação de 550-850 m, em vegetação densa, em encostas íngremes. O hábitat mais preferido incluía árvores e arbustos com 30% e 69% de cobertura, respectivamente. O veado-latido evitou uma cobertura de árvores mais espessa, possivelmente porque impede o movimento e a fuga de predadores. Nenhuma diferença significativa (χ2 = 6,37; df = 3; p = 0,19) na cobertura vegetal sazonal foi registrada.

2.
Braz J Biol ; 82: e242334, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34133564

RESUMO

Microhabitat factors associated with the habitat of barking deer (Muntiacus vaginalis) were examined and compared between summer and winter seasons. Habitat characteristics and preferred habitat were measured by locating direct and indirect signs. To quantify the habitat utilization of barking deer, each selected study site was sampled for floral diversity from 2015 to 2017. Quadrats were deployed along transect lines to determine seasonal distribution. Barking deer were not evenly distributed across vegetation types in the study area; they occurred more often in the broad-leaved forest than in Chir pine forest, at an elevational range of 550-850 m, in thick vegetation on steep slopes. The most preferred habitat included trees and shrubs with 30% and 69% cover, respectively. Barking deer avoided thicker tree cover, possibly as it hinders movement and escape from predators. No significant difference (χ2 = 6.37, df = 3, p = 0.19) in seasonal vegetation cover was recorded.


Assuntos
Cervos , Cervo Muntjac , Animais , Ecossistema , Paquistão , Parques Recreativos , Estações do Ano
3.
Hum Reprod ; 15(3): 594-8, 2000 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10686202

RESUMO

Complete hydatidiform mole (CHM) is an abnormality in pregnancy due to a diploid conception which is generally androgenetic in origin, i. e. all 46 chromosomes are paternally derived. We have examined the genetic origin of repetitive hydatidiform moles in a patient having three CHM by two different partners, and no normal pregnancies. Using fluorescent microsatellite genotyping, we have shown all three CHM to be biparental, rather than androgenetic, in origin. Examination of informative markers for each homologous pair of chromosomes, in two of the CHM, failed to reveal any evidence of unipaternal disomy, suggesting that the molar phenotype might result from disruption of normal imprinting patterns due to a defect in the maternal genome. It has been suggested that intracytoplasmic sperm injection (ICSI), followed by selection of male embryos, can prevent repetitive CHM; but examination of sex chromosome-specific sequences in the three CHM described here, showed that, while two were female, the first CHM was male. Selection of male embryos is therefore unlikely to prevent repetitive CHM in this patient. Our results suggest that the genetic origin of repetitive CHM should be determined prior to in-vitro fertilization (IVF) and that current strategies for the prevention of repetitive CHM may not be appropriate where the CHM are of biparental origin.


Assuntos
Mola Hidatiforme/genética , Neoplasias Uterinas/genética , Adulto , Feminino , Humanos , Masculino , Repetições de Microssatélites , Polimorfismo Genético , Gravidez , Recidiva , Cromossomo X , Cromossomo Y
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