Navegação Ciências Biológicas por Título
Resultados 1836-1855 de 3025
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Morphological and genetic perspectives of hybridization in two contact zones of closely related species of Petunia (Solanaceae) in southern Brazil
(2019) [Artigo de periódico]Interspecific hybridization has several consequences for parental species, from blurring species limits to the emergence of new taxa. Petunia axillaris and P. exserta occur in sympatry in southernmost Brazil and naturally ... -
Morphological markers for microspore developmental stage in maize
(2008) [Artigo de periódico]A utilização do milho (Zea mays) na cultura de anteras é limitada devido ao baixo número de genótipos com alto potencial androgenético. A obtenção de micrósporos no estádio de desenvolvimento apropriado no início da cultura ... -
A morphological reappraisal of the immature stages and life history of Elachista synethes Meyrick (Lepidoptera, Elachistidae), an Australian leaf miner alien to Chile
(2015) [Artigo de periódico]Elachista synethes was recently recognized as an alien species in northern Chile, where its larvae mine the rescue grass Bromus catharticus (Poaceae). In order to provide the necessary information to allow field detection ... -
Morphological study of the eggs and nymphs of triatoma dimidiata (Latreille, 1811) observed by light and scanning electron microscopy (Hemiptera: Reduviidae: Triatominae)
(2009) [Artigo de periódico]Eggs and nymphs of Triatoma dimidiata were described using both light and scanning electron microscopy. The egg body and operculum have an exochorion formed by irregular juxtaposed polygonal cells; these cells are without ... -
Morphology and distribution of antennal sensilla of Gryon gallardoi (Brèthes) (Hymenoptera: Scelionidae) females
(2007) [Artigo de periódico]Usando a microscopia eletrônica de varredura, foram descritas e ilustradas a morfologia externa e a distribuição das sensilas antenais da fêmea de Gryon gallardoi (Bréthes), um importante parasitóide de ovos de coreídeos. ... -
Morphology of immatures of Euschistus (Mitripus) grandis (Insecta: Hemiptera: Pentatomidae)
(2013) [Artigo de periódico]Immatures are important sources of information about characters, thus potentially improving classification and phylogenies. Euschistus (Mitripus) grandis Rolston, 1978 occurs in southern and southeastern Brazil. There are ... -
Morphology of the immatures and biology of Chinavia longicorialis (Breddin) (Hemiptera : Pentatomidae)
(2009) [Artigo de periódico]Chinavia longicorialis (Breddin) é encontrada apenas no Brasil, Argentina e Uruguai, sobre plantas hospedeiras de pelo menos três famílias diferentes. Adultos e ninfas dessa espécie foram coletados no Parque Estadual do ... -
Morphology of the prosternal glands of Heliconius erato (Lepidoptera: Nymphalidae)
(2010) [Artigo de periódico]Two types of exocrine glands, located midventrally on the prosternum, are described for the larval stage of Heliconius erato (Linnaeus) (Lepidoptera: Nymphalidae). The first type, formed by a single, flat secreting pouch, ... -
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae)
(2023) [Artigo de periódico]The Chromolaena congesta complex (Asteraceae, Eupatorieae) presents a difficult challenge for biodiversity researchers due to the intertwined connections of its species and the difficulty of establishing morphological ... -
Morphplogical characterization and genetic analysis of Drechslera teres isolates
(2002) [Artigo de periódico]Net blotch, caused by the phytopathogen Drechslera teres, is a common disease of barley (Hordeum vulgare L) and is responsible for large economic losses in some barley growing areas. In this study the morphology and genetic ... -
Morquio-like dysostosis multiplex presenting with neuronopathic features is a distinct GLB1-related phenotype
(2021) [Artigo de periódico]Background Morquio B disease (MBD) is a distinct GLB1-related dysostosis multiplex presenting a mild phenocopy of GALNS-related Morquio A disease. Previously reported cases from European countries carry the W273L variant ... -
Mortality of septic shock patients is associated with impaired mitochondrial oxidative coupling efficiency in lymphocytes : a prospective cohort study
(2021) [Artigo de periódico]Background: Septic shock is a life-threatening condition that challenges immune cells to reprogram their mitochondrial metabolism towards to increase ATP synthesis for building an appropriate immunity. This could print ... -
Mosquito-disseminated pyriproxyfen yields high breeding-site coverage and boosts juvenile mosquito mortality at the neighborhood scale
(2015) [Artigo de periódico]Mosquito-borne pathogens pose major public health challenges worldwide. With vaccines or effective drugs still unavailable for most such pathogens, disease prevention heavily relies on vector control. To date, however, ... -
Mosquito species occurrence in association with landscape composition in green urban areas
(2018) [Artigo de periódico]Aedes aegypti prefers densely populated habitats, but has been shown to explore less anthropogenic environments. We investigated composition of the abundance of mosquitoes in forested areas and assessed relationships between ... -
Motor cortex excitability and BDNF levels in chronic musculoskeletal pain according to structural pathology
(2016) [Artigo de periódico]The central sensitization syndrome (CSS) encompasses disorders with overlapping symptoms in a structural pathology spectrum ranging from persistent nociception [e.g., osteoarthritis (OA)] to an absence of tissue injuries ... -
Motor skill training promotes sensorimotor recovery and increases Microtubule-Associated Protein-2 (MAP-2) immunoreactivity in the motor cortex after intracerebral hemorrhage in the rat
(2013) [Artigo de periódico]Motor skill learning may induce behavioral and neurophysiological adaptations after intracerebral hemorrhage (ICH). Learning a new motor skill is associated with dendritic reorganization and requires protein synthesis and ... -
Mouse embryonic stem cells: the establishment of the system to produce differentiated cell types in vitro
(2003) [Artigo de periódico]During the last few years, embryonic stem (ES) cells have been a new tool in cell biology which is very promising for the scientific community to develop new cell therapies. ES cells are the only cell type that can ... -
Movement and longitudinal distribution of a migratory fish (Salminus brasiliensis) in a small reservoir in southern Brazil
(2019) [Artigo de periódico]We investigated whether the movement and distribution of the migratory fish, Salminus brasiliensis, were affected by a small reservoir. We also examined how movement and distribution were related to water temperature, flow, ... -
Movement pattern of Spartocera dentiventris (Berg) (Hemiptera: Coreidae) in an experimental crop of Nicotiana tabacum L. (Solanaceae)
(2002) [Artigo de periódico]In the present work we investigated the movement pattern of Spartocera (=Corecoris) dentiventris (Berg) (Hemiptera: Coreidae) adults through the mark-release-recapture method in an experimen- tal tobacco crop (Nicotiana ... -
MSX1 and PAX9 investigation in monozygotic twins with variable expression of tooth agenesis
(2013) [Artigo de periódico]Non-syndromic agenesis of permanent teeth is one of the most common anomalies in human development, a multifactorial characteristic caused by genetic and environmental factors. We describe a pair of monozygotic twins who ...