Castes
Mostrando 13-24 de 48 artigos, teses e dissertações.
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13. Documentário-ensaio: a produção de um discurso audiovisual em documentários brasileiros contemporâneos
The present research castes some elements to map the specificities of the essay-documentary. The Brazilian documentarys production has grown progressively in the last two decades, however a part of it no longer limits itself to a reproduction of the reality, characteristic traditionally associated to that type of production. In order to study those new works
Publicado em: 2008
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14. Chemical ecology of Brazilian bees: Melipona rufiventris, Melipona scutellaris, Plebeia droryana, Nannotrigona testaceicornis, Tetragonisca angustula and Centris trigonoides / Ecologia quimica de abelhas brasileiras : Melipona rufiventris, Melipona scutellaris, Plebeia droryana, Nannotrigona testaceicornis, Tetragonisca angustula e Centris trigonoides
A vida social das abelhas é marcada pela presença de várias substâncias produzidas por suas glândulas exócrinas e endócrinas ou coletadas na natureza. Estes compostos são empregados principalmente por operárias, machos e rainha no reconhecimento de seus companheiros de colônia, acasalamento, defesa do ninho e marcadores de percurso. Entre as abelha
Publicado em: 2007
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15. Identification of differentially expressed genes in queen and worker castes of Melipona quadrifasciata / Identificação de genes diferencialmente expressos nas castas da rainha e operaria de Melipona quadrifasciata
Caste polyphenism is a multifaceted phenomenon, most evident in the marked differences in reproductive capacity and longevity between queens and workers. In the present study, the stingless bee Melipona quadrifasciata anthidioides was chosen to investigate differences in gene expression between newly emerged adult queens and workers. This study has focused o
Publicado em: 2005
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16. The chemical composition of the mandibular gland secretion of Melipona bicolor Lepeletier, 1836 (Hymenoptera, Apidae, Meliponini): a comparative study among castes and sexes
A secreção das glândulas mandibulares de operárias recém-emergidas, aprovisionadoras de cria e forrageiras, rainhas virgens e fisogástricas e machos de Melipona bicolor foi analisada através de cromatografia gasosa-espectrometria de massas. Foi verificado que a secreção é composta por uma mistura de hidrocarbonetos, álcoois, ésteres e ácidos. A
Journal of the Brazilian Chemical Society. Publicado em: 2004-10
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17. Determinação das castas em Scaptotrigona postica (Latreille) (Hymenoptera, Apidae, Meliponini): diferenciação do ovário
Both castes of Scaptotrigolia postica (Latreille, 1804) possess four ovarioles in each ovary. Queen and workers have the same ovarian development during the larvallife, but in lhe late larval stage the queen ovary beco me larger. During pupation a higher rate of cell division is observed in queen ovarioles and a higher rale of cell death in workers. Newly em
Revista Brasileira de Zoologia. Publicado em: 2002-09
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18. A new species of Ibitermes (Isoptera, Termitidae) from the Atlantic forest, northeastern Brazil
The sterile castes of Ibitermes inflatus sp. nov. from Rio Tinto, State of Paraíba, Brazil are described and illustrated. This is the first record of a species of Ibitermes from the Brazilian northeast and from the Atlantic Forest biome. The absence of ridges in the molar plate of the left mandible and the presence of granules of sand and silt mixed with or
Iheringia. Série Zoologia. Publicado em: 30/06/2002
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19. Ultramorphology of the metapleural gland in three species of Atta (Hymenoptera, Formicidae)
Differences among the metapleural glands of four female castes of Atta bisphaerica Forel, 1908, A. capiguara Gonçalves, 1944 and A. sexdens rubropilosa Forel, 1908 were examined by scanning electron microscope. There were no differences in gland size between the same castes of these species, although the opening gland in A. sexdens rubropilosa had been twic
Iheringia. Série Zoologia. Publicado em: 27/11/2001
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20. Size differences in the Dufour gland of Apis mellifera Linnaeus (Hymenoptera, Apidae) between and within the female castes
The Dufour gland is found closely associated with the sting apparatus of all hymenopteran females, playing multiple roles among bees. In Apis mellifera Linnaeus, 1758 the gland is connected to the dorsal vaginal wall and, in queens, it produces egg-marking pheromones. In workers the function of this gland is unknown, except by its capacity to mimic the queen
Revista Brasileira de Zoologia. Publicado em: 2001-07
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21. Medicina alternativa (¿medicina complementaria?) como fenómeno social. Hacia la construcción de un nuevo modelo de salud
Parte do livro:Salud y equidad: una mirada desde las ciencias sociales
Autor(es): Boscán, Maffanela Castés
Editora FIOCRUZ. Publicado em: 2000
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22. Genetic Evidence on the Origins of Indian Caste Populations
The origins and affinities of the ∼1 billion people living on the subcontinent of India have long been contested. This is owing, in part, to the many different waves of immigrants that have influenced the genetic structure of India. In the most recent of these waves, Indo-European-speaking people from West Eurasia entered India from the Northwest and diffu
Cold Spring Harbor Laboratory Press.
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23. Morphological castes in a vertebrate
Morphological specialization for a specific role has, until now, been assumed to be restricted to social invertebrates. Herein we show that complete physical dimorphism has evolved between reproductives and helpers in the eusocial naked mole-rat. Dimorphism is a consequence of the lumbar vertebrae lengthening after the onset of reproduction in females.
The National Academy of Sciences.
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24. Caste- and development-associated gene expression in a lower termite
Social insects such as termites express dramatic polyphenism (the occurrence of multiple forms in a species on the basis of differential gene expression) both in association with caste differentiation and between castes after differentiation. We have used cDNA macroarrays to compare gene expression between polyphenic castes and intermediary developmental sta
BioMed Central.