Host Densities
Mostrando 1-12 de 91 artigos, teses e dissertações.
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1. Do parasitoid density and host age affect the parasitism of Palmistichus elaeisis (Hymenoptera: Eulophidae)?
RESUMO: A incidência de lepidópteros desfolhadores é um dos fatores ambientais que regulam a produtividade das florestas plantadas. O endoparasitoide Palmistichus elaeisis (Hymenoptera: Eulophidae) destaca-se pela eficiência no parasitismo e pode ser promissor no controle de Lepidoptera pragas em diversas culturas com importância econômica. Assim, aval
Arq. Inst. Biol.. Publicado em: 30/05/2019
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2. Reproductive behaviours and host plant selection mediated by semiochemicals in Neoleucinodes elegantalis (Lepidoptera: Crambidae) / Comportamento reprodutivo e seleção de hospedeiro mediada por semioquímicos em Neoleucinodes elegantalis (Lepidoptera: Crambidae)
The searching behaviour in insects is important to acquire food, meeting mates, oviposition sites location and protect the insects against predators. Thus, the majority of herbivorous insects select their host plant and, in particular, the plants part, which it will feed and oviposit on, using, among other tools, host plants semiochemicals. This paper aims:
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2011
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3. Influência da densidade de ovos de Diaphania hyalinata (L.) (Lepidoptera: Crambidae) na capacidade de parasitismo de Trichogramma exiguum Pinto & Platner e Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae)
The effects of the egg density of Diaphania hyalinata (L.) on several biological parameters of Trichogramma exiguum Pinto & Platner and T. pretiosum Riley were investigated. For that, 24h-old egg masses were isolated in glass tubes (15 replicates; 1 egg mass = 1 replicate), and offered to parasitization by a newly-emerged female of T. pretiosum or T. exiguum
Neotropical Entomology. Publicado em: 2011-04
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4. Seasonality and host preference of arbuscular mycorrhizal fungi of five plant species in the inner Mongolia steppe, China
The seasonal change and host preference of arbuscular mycorrhizal (AM) colonization and community composition of five common plant species Agropyron cristatum, Anemarrhena asphodeloides, Cleistogenes squarrosa, Leymus chinensis, and Stipa grandis in the Inner Mongolia steppe were investigated. The AM root length colonization rates were different among the fi
Brazilian Journal of Microbiology. Publicado em: 2011-03
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5. Parasitóide de pupas Trichospilus diatraeae (Hymenoptera: Eulophidae): desenvolvimento e reprodução em lepidópteros-praga do dendezeiro / Parasitoid pupae Trichospilus diatraeae (Hymenoptera: Eulophidae): Development and reproduction in defoliating caterpillars of oil palm
The African palm or oil palm (Elaeis guineensis Jacq.) is a plant of African origin and considered the major industrialized activity in humid areas, similar in Amazon area. The expansion of oil palm, especially in northern region of Brazil, has presented more phytosanitary problems, including the caterpillars defoliating Brassolis sophorae L. Opsiphanes invi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2010
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6. Light and electron microscopy of Myxobolus sciades n. sp. (Myxozoa), a parasite of the gills of the Brazilian fish Sciades herzbergii (Block, 1794) (Teleostei: Ariidae)
A myxosporean parasite in the gill lamellae of the freshwater teleost fish, Sciades herzbergii (Ariidae) (Block, 1794), from the Poti River (Northeast of Brazil) was described by light and electron microscopy studies. Polysporic histozoic cyst-like plasmodia containing several life-cycle stages, including mature spores, were observed. The spores were pyrifor
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-03
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7. BIOLOGIA E TÉCNICAS DE CRIAÇÃO DE Trichospilus diatraeae (HYMENOPTERA: EULOPHIDAE) EM PUPAS DE Tenebrio molitor (COLEOPTERA: TENEBRIONIDAE) E Diatraea saccharalis (LEPIDOPTERA: CRAMBIDAE)
The potential for Trichospilus diatraeae Cherian &Margabandhu, 1942 (Hymenoptera:Eulophidae) as biological control agent in Brazil is unknown and, therefore, this research assessed the feasibility of pupae of Tenebrio molitor Linnaeus, 1758 (Coleoptera:Tenebrionidae) as host alternative, to optimize its production in the laboratory for the control of Diatrae
Publicado em: 2009
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8. Inflammatory and Immunological Aspects of pulpitis Human Dental / Aspectos Inflamatórios e Imunológicos de Pulpites Dentárias Humanas
Immune and inflammatory cells may contribute to host defense and microenvironmental changes during the pathogenesis of dental pulpitis. This study evaluated the microscopic characteristics and densities (per mm2) of tryptase+ mast cells, CD4+ T helper lymphocytes, CD45RO+ memory T lymphocytes, foxp3+ T regulatory lymphocytes, CD20+ B lymphocytes, CD68+ macro
Publicado em: 2009
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9. Interação de técnicas para o manejo fitossanitário de Anticarsia gemmatalis (Lepidoptera: Noctuidae) / Techniques interaction for pest management of Anticarsia gemmatalis (Lepidoptera: Noctuidae) control
Several Trichogramma (Hymenoptera: Trichogrammatidae) species parasitizing Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) eggs, the main soybean defoliator in Brazil. The egg parasitoid Trichogramma atopovirilia Oatman &Platner (Hymenoptera: Trichogrammatidae) is an agent of biological control of the soybean caterpillar Anticarsia gemmatalis Hubner (
Publicado em: 2009
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10. Aspects of spatial pattern, habitat association and herbivory density-dependent of Calophyllum brasiliense Camb. (Clusiaceae) in restinga alta florest, Ilha do Cardoso, Cananéia. SP. Brazil / Aspectos da distribuição espacial, associação com hábitat e herbivoria dependente da densidade de Calophyllum brasiliense Camb. (Clusiaceae) em restinga alta na Ilha do Cardoso, Cananéia, SP, Brasil
Several theories, including different factors and mechanisms, have been postulated to explain the high tree species coexistence in tropics, which remains an unsolved question that continues to pose a challenge to plant ecologists. Population-level tree dynamics studies contribute to a better understanding of the processes acting on community-level. The aim o
Publicado em: 2009
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11. Moscas ectoparasitas de morcegos na Fazenda Campo Verde, Parque Nacional da Serra da Bodoquena, MS, e o efeito da distancia geográfica e da composição da comunidade de hospedeiros sobre a comunidade de moscas parasitas de morcegos do centro-sul do Brasil / Batflies (Diptera: Streblidae e Nycteribiidae) from bats in the Campo Verde farm, Serra da Bodoquena National Park, MS, and the effect of the geographic distance and host composition on the batfly communities in south-central region Brasil.
The objective of this study is to describe host-parasites relationship using the prevalence, abundance and mean intensities indexes. Beside, I tested the influence of sex and reproductive stage in theses indexes. A total of 12 bat species was collected in 359 individuals of the Phyllostomidae family. Within these bats 178 were parasitized with 337 individual
Publicado em: 2008
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12. Estudo da relação do parasitóide Nasonia vitripennis (Walker, 1836) (Hymenoptera: Pteromalidae) utilizando como hospedeiro Chrysomya megacephala (Fabricius, 1794) (Diptera: Calliphoridae), em laboratório / Study of the relationship of parasitoid Nasonia vitripennis (Walker, 1836) (Hymenoptera: Pteromalidae) in host Chrysomya megacephala (Fabricius, 1794) (Diptera: Calliphoridae), in laboratory
The object of this study was evaluate biologycal aspects of Nasonia vitripennis at different density levels of the host Chrysomya megacephala on parasitoid N. vitripennis isolated and grouped; evaluate the longevity of N. vitripennis with and without offering of pupas to the parasitóides adults; and verify the influence of the sawdust as substratum of pupas
Publicado em: 2007