Spiders
Mostrando 37-48 de 146 artigos, teses e dissertações.
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37. Description of the male of Pozonia bacillifera (Araneae: Araneidae)
Pozonia Schenkel, 1953 is a genus of Neotropical orb-weaving spiders that currently includes four species, three of which are known only from females. In this paper, the male of Pozonia bacillifera (Simon, 1897) is described and illustrated for the first time, based on a specimen from Nova Lima, state of Minas Gerais, Brazil. It differs from the male of P. n
Zoologia (Curitiba). Publicado em: 2011-02
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38. Molecular, behavioral and anatomical sophistication in spider webs: insights from spinning gland RNA-seq experiments in primitive and modern spiders.
RNA-seq experiments conducted in 454 sequencers were carried out to produce 87.000 short-reads representing the transcriptome of two spiders?spinning glands. We produced sequences from (i) Actinopus sp., a spider from the Mygalomorphae clade, and (ii) Gasteracantha cancriformis , an Orbicularia spider. Mygalomorphae spiders are known to retain a number of pr
INTERNATIONAL CONFERENCE OF THE BRAZILIAN ASSOCIATION FOR BIOINFORMATICS AND COMPUTATIONAL BIOLOGY. Publicado em: 2011
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39. Presentes nupciais em Paratrechalea ornata Carico, 2005 (Araneae; Trechaleidae) : quais os canais de sinalização reconhecidos pelas fêmeas no contexto pré-copulatório?
The Order Araneae is widely known for having a great variety both in terms of morphology and behavior, from which I highlight the genus Paratrechalea Carico, 2005, whose males construct a nuptial gift from a prey wrapped in silk that is offered to the female during courtship. Recent studies indicate that this gift-giving behavior in spiders represents a male
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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40. Influência da complexidade arquitetural de ramos vegetativos na riqueza e abundância de aranhas e outros artrópodes / Influence of architectural complexicity of vegetative branches on the richness and abundance of spiders and other arthropods
A estrutura do hábitat tem sido um tema recorrente na literatura, havendo diversos estudos que correlacionaram uma maior complexidade estrutural do hábitat à riqueza e abundância dos mais variados taxa. Contudo, este é um tema de difícil generalização e as abordagens experimentais ainda são raras. A vegetação é um elemento que proporciona complex
Publicado em: 2011
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41. Composição e estrutura da fauna araneológica (Arachnida, Araneae) associada ao estrato arbóreo-arbustivo de matas ciliares e seus microambientes no Rio Grande do Sul, Brasil / Composition and structure of the spider fauna of the tree-shrub strata of riparian forests and its microhabitats in Rio Grande do Sul, Brasil
A intenção deste estudo foi conhecer a composição e a diversidade da araneofauna relacionada a matas ciliares no Rio Grande do Sul, em diferentes localidades: rio Piratini no município de Arroio Grande; rio Camaquã em Cristal; rio dos Sinos em Parobé e rio Maquiné em Maquiné. Foi comparada a riqueza de espécies, abundância e similaridade da fauna
Publicado em: 2011
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42. Hábito alimentar da rã invasora Lithobates catesbeianus (Shaw, 1802) e sua relação com anuros nativos na Zona da Mata de Minas Gerais, Brasil / Feeding habits of the invasive frog Lithobates catesbeianus (Shaw, 1802) and its relationship with native anurans in the Zona da Mata of Minas Gerais state, Brazil
The American Bullfrog (Lithobates catesbeianus) was introduced into several countries for commercial breeding, settling invasive populations during this process. In Brazil the beginning of its farming occurred on the 1930 s, and currently invasive populations can be found in the South, Southeast and Central-West regions. It has a generalist feeding habit, an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2010
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43. Mirmecofilia em Parrahasius polibetes (Lepidoptera: Lycaenidae) : historia natural, custos, seleção de planta hospedeira e beneficios da co-correncia com hemipteros mirmecofilos / Mymecophily ion Parrhansius polibetes (Lepidoptera: Lycaenidae) : natural history costs, host-plant selection, and benefits of co-ocurrece with myrmecophilous hemipterans
Ants are one of the most prominent groups of terrestrial organisms in terms of diversity, relative abundance and biomass. Their importance is due primarily to eusocial behavior combined with complex communication systems. Tropical foliage is rich in renewable feeding sources that promote ant foraging. As some of the most important predators on plants, ants s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2010
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44. Impacto e fatores determinantes de pragas em Phaseolus vulgaris / Impact and determinants factors of pests attack in Phaseolus vulgaris
The aim of this work were to determine the critical yield components and key factors of yield losses on common bean (Phaseolus vulgaris) and identify the factors that determine pest attack in this culture. The bean crops was cultivated in three growing seasons, the spring-summer, summer-autumn and winter-spring arranged in two planting system, no-tillage and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2010
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45. Chromosomes of Theridiidae spiders (Entelegynae): interspecific karyotype diversity in Argyrodes and diploid number intraspecific variability in Nesticodes rufipes
Theridiidae is a derived family within the Araneoidea clade. In contrast to closely related groups, the 2n(male) = 20+X1X2 with acro/telocentric chromosomes is the most widespread karyotype among the theridiid spiders. In this work, the cytogenetic analysis of Argyrodes elevatus revealed original chromosome features different from those previously registered
Genetics and Molecular Biology. Publicado em: 08/09/2010
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46. Orb-weaving spider diversity in the Iberá Marshlands, Argentina
The Iberá Marshlands RAMSAR reserve, in the northeast of Argentina, is one of the largest and most important wetlands of America. In this study we assess orb-weaving spider (Araneae: Orbiculariae) diversity in this reserve, analyzing different facets of local diversity (species richness, diversity, evenness and taxonomic distinctness), and the contribution
Neotropical Entomology. Publicado em: 2010-08
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47. Seasonal variation of ground spiders in a Brazilian Savanna
The Brazilian Savanna Ecoregion (Cerrado) is one of the richest biomes in the world, with a characteristic highly seasonal climate a dry season between May and September and a rainy season from October through April. Ground-dwelling spiders from three Cerrado phytophysiognomies, "campo cerrado", "cerrado" and "cerradão", were sampled using pitfall traps dur
Zoologia (Curitiba). Publicado em: 2010-06
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48. On the female of Metagonia taruma (Araneae: Pholcidae), ecology of the pholcid spiders in the Urucu River Basin, Amazonas, Brazil and new records from Brazilian Amazonia
In this study we describe the unknown female of Metagonia taruma Huber, 2000, which was discovered after sampling in two forest gap types at Porto Urucu (Urucu River Basin, Coari, Amazonas, Brazil), and also provide information on the community ecology and natural history of the sampled species. The female of M. taruma is similar to that of M. samiria (Huber
Zoologia (Curitiba). Publicado em: 2010-06