Population Fluctuation
Mostrando 25-36 de 95 artigos, teses e dissertações.
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25. Análise faunística e flutuação populacional de cigarrinhas (Hemiptera: Cicadellidae) potenciais vetoras de Xylella fastidiosa em pomares de ameixeira nos estados do Rio Grande do Sul e São Paulo, Brasil / Faunistic analysis and seasonal fluctuation of sharpshooters (Hemiptera:Cicadellidae) that are potential vectors of Xylella fastidiosa in plum orchards in Rio Grande do Sul and São Paulo states, Brazil
The plum leaf scald (PLF) is a major threat for plum production in Brazil. PLF is caused by the bacteria Xylella fastidiosa which is transmitted by sharpshooter leafhoppers (Hemiptera: Cicadellidae, Cicadellinae). In this investigation, we surveyed the Cicadellinae species associated with plum orchards located in Rio Grande do Sul (RS) and São Paulo (SP) st
Publicado em: 2009
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26. OCCURRENCE AND BIOECOLOGIC ASPECTS OF SOYBEAN ROOT WEEVILS / OCORRÊNCIA E ASPECTOS BIOECOLÓGICOS DOS CURCULIONÍDEOS-DAS-RAÍZES EM SOJA [Glycine max (L). Merryl]
The objective of this study was to evaluate the population fluctuation and the distribution of the soybean root weevils (Coleoptera: Curculionidae), and the population fluctuation was determined in a soybean area in the period December, 2006 to November, 2007, in the Restinga Seca county, RS. Distribution in space and time was evaluated in a soybean experime
Publicado em: 2008
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27. Ocorrência e bionomia de Ctenarytaina eucalypti (Maskell) (Hemiptera: Psyllidae) e seu inimigo natural Psyllaephagus pilosus Noyes (Hymenoptera: Encyrtidae) em plantas de Eucalyptus globulus / Occurrence and bionomy of Ctenarytaina eucalypti (Maskell) (Hemiptera: Psyllidae) and its natural enemy Psyllaephagus pilosus Noyes (Hymenoptera: Encyrtidae) in plants of Eucalyptus globulus.
Species of the genus Eucalyptus hosting several species of insects of the family Psyllidae. Among them, the specie Ctenarytaina eucalypti (Maskell) (Hemiptera: Psyllidae) is considered the most harmful, causing damage to culture wherever it has been introduced. To control these hemiptera phytophage, treatment with insecticides proved to be costly and unsusta
Publicado em: 2008
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28. Variação sazonal de Triozoida limbata (Hemiptera: Triozidae) e inimigos naturais em goiabeira / Seasonal variation of Triozoida limbata (Hemiptera: Triozidae) and natural enemies in guava plants
Triozoida limbata is one of the most important pests of guava plants. Their nymphs attack young leaves and buds, causing serious damages. Basic studies of population dynamics and determination of factors that regulate the population growth are necessary for the development of integrated programs management of this pest. Agents of natural biological control a
Publicado em: 2008
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29. Caracterização de tipo e raça de populações do nematóide de cisto da soja detectadas no município de Jataí/GO e proximidades por hospedeiros diferenciadores / Characterization of type and race of cyst nematode populations of the soybean detected in the council of Jataí/GO and close by differential hosts
The soybean is the most important oleaginous in production under extensive cultivation in Brazil occupying the second position of world production. Alongside the expansion of soybeans culture in Brazil, there was also an increase in plant health problems, including that of the soybean cyst nematode, (NCS), Heterodera glycines Ichinohe, 1952. The classificati
Publicado em: 2008
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30. Flutuação populacional da broca-da-coroa-foliar Eupalamides cyparissias (Lepidoptera: Castiniidae) em plantios de dendê (Elaeis guineensis) no estado do Pará / Population fluctuation of Eupalamides cyparissias (Lepidoptera: Castiniidae) in palm oil (Elaeis guineensis) plantations in the State of Pará
A broca-da-coroa-foliar Eupalamides cyparissiass (Fabricius,1776) (Lepidoptera: Castniidae) cujas sinonímias são Castnia daedalus, e Cyparissius daedalus, Eupalamides daedalus, Lapaeumides daedalus, Cyparissius daedalus, destaca-se entre as espécies de insetos-praga mais importantes para a cultura do dendê. Essa espécie causa danos severos à produção
Publicado em: 2007
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31. Extinction of canid populations by inbreeding depression under stochastic environments in Southwestern Goiás State: a simulation study
A frequently addressed question in conservation biology is what is the chance of survival for a population for a given number of years under certain conditions of habitat loss and human activities. This can be estimated through an integrated analysis of genetic, demographic and landscape processes, which allows the prediction of more realistic and precise mo
Genetics and Molecular Biology. Publicado em: 2007
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32. Dichelops melacanthus (Dallas, 1851) (Heteroptera: Pentatomidae) no Sistema Plantio Direto no Sul de Mato Grosso do Sul: Flutuação Populacional, Hospedeiros e Parasitismo / Dichelops melacanthus (Dallas, 1851) (Heteroptera: Pentatomidae) in No-Tillage System in the South Region of Mato Grosso do Sul State, Brazil: Population fluctuation, host and Parasitism
This work was done in order to verify population fluctuation, alternative hosts, and the natural occurrence of parasitoids in eggs and adults of the green belly stink bug, Dichelops melacanthus (Dallas, 1851), in No-Tillage System in the South Region of Mato Grosso de Sul State. Weekly samples were taken - from September 2005 to December 2006 on soybean, sec
Publicado em: 2007
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33. DINÂMICA POPULACIONAL DE TRACHEMYS DORBIGNI, (TESTUDINES: EMYDIDAE) EM AMBIENTE ANTRÓPICO EM PELOTAS, RS / POPULATIONAL DYNAMIC OF TRACHEMYS DORBIGNI (TESTUDINES: EMYDIDAE) IN AN ANTHROPIC ENVIRONMENT IN SOUTHERN BRAZIL
Informations about the population dynamic of Trachemys dorbigni were collected from February 2006 to January 2007, in the Santa Barbara stream, Pelotas, Brazil. It was collected 377 individuals in the traps, 160 females, 146 males and 71 juveniles. The sex ratio was not different from 1:1. Males of T. dorbigni reached sexual maturity at 127 mm length. The sm
Publicado em: 2007
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34. EFFICIENCY OF FIVE MODELS OF ETHANOLIC TRAPS FOR CAPTURE OF COLEOPTERA: Scolytidae, IN NATIVE FOREST IN ITAARA COUNTRY, RS. / EFICIÊNCIA DE CINCO MODELOS DE ARMADILHAS ETANÓLICAS NA COLETA DE COLEOPTERA: Scolytidae, EM FLORESTA NATIVA NO MUNICÍPIO DE ITAARA, RS.
This work was developed with the objective of testing the efficiency of five models of ethanolic traps to collect specimens from the Scolytidae family in a native forest. The study was made in a native forest near of the CIPAM field seat in Itaara-RS. The models of trap tested were: PET Santa Maria, Roechling, Marques-Carrano, Escolitídeo-Curitiba and Marqu
Publicado em: 2007
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35. Fatores que modificam a funÃÃo congnitiva e motora na doenÃa de Parkinson: um estudo sobre a influÃncia do jogo de dominà / Factors that modify the cognitive function and the motor performance in the Parkinson disease: a study about the influence of the dominoe game.
Parkinsonâs disease (PD) is a chronic illness characterized by the presence of akinesia, rigidity and resting tremor. Clinical fluctuation is a common finding and is probably related to the oscillation of dopaminergic neurotransmission and also to the influence of other neurotransmitters. Obsessive gambling has been described over the years and it has been
Publicado em: 2007
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36. Variação diária e anual de freqüência e atividade do Boto Cinza Sotalia guianensis em Pipa, Nordeste do Brasil
The aim of this study was to investigate the daily and annual variation in frequency and in activity of an estuarine dolphin population, Sotalia guianensis, in Brazilian northeastern. Thus we estimated the daily variation and seasonality in frequency of adult and immature and in behavior of socialization, aerial activity, foraging of a boto equatorial popula
Publicado em: 2006