Análise Da Ocorrência De Erva-De-Passarinho Na Arborização Da Universidade Federal De Sergipe, Campus São Cristóvão

White, Benjamin Leonardo Alves; Ribeiro, Adauto de Souza; White, Larissa Alves Secundo; Júnior, José Elvino do Nascimento

doi:10.5380/rf.v41i1.21174

Cited by 9 publications

(10 citation statements)

References 7 publications

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“…Another factor that interferes on mistletoe success is the size of the host plant. Our results are consistent with recent studies that demonstrated that larger hosts are more frequently attacked by mistletoes White et al 2011). Thies et al (2003) also reported that the effects of parasitism depend on the size, intensity, growth, metabolism and photosynthetic capacity of mistletoe, as well as the host development.…”

Section: Discussionsupporting

confidence: 93%

Hemiparasitism effect on Baccharis dracunculifolia DC. and consequences to its major galling herbivore

et al. 2015

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Mistletoes obtain nutrients and water from their hosts, with varying effects among those hosts. We assessed the factors that influence the colonization of the mistletoe Struthanthus flexicaulis on Baccharis dracunculifolia and the subsequent effects on host performance. We evaluated the incidence of S. flexicaulis according to size (height classes) and architecture of the host as well as its effects on various physiological parameters of the host. Furthermore, we assessed the occurrence of insect galls induced by Baccharopelma dracunculifoliae (Psyllidae), including the number of leaves infected, and the mortality of infected and non-infected branches. Taller hosts had a higher abundance of mistletoes (60%, p> 0.05). Physiological parameters of hosts were not affected by parasitism, although galling occurred more often (p <0.05) and leaf loss increased (p>0.05) on infected branches. Taller individuals are more colonized by mistletoes and more architecturally complex hosts support a greater number of mistletoes. Mistletoe causes a top-down effect on host-associated organisms on parasitized branches. Mistletoes had a strong top-down effect on B. dracunculifolia due to a reduction in the number of leaves on parasitized branches and the replacement of the bush crown, as well as an increased incidence of insect galls. Furthermore, the occurrence of a heavy parasite load increased the mortality rate of the host branches.

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Section: Discussionsupporting

confidence: 93%

Hemiparasitism effect on Baccharis dracunculifolia DC. and consequences to its major galling herbivore

et al. 2015

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“…The four most abundant host species in the survey had generally low crown infestation intensity by P. theloneura, which corroborates results of other studies of mistletoes in urban afforestations in Brazil (Leal et al 2006;White et al 2011). Low infestation intensity allows control using lowcost methods, such as manual removal and pruning, which are unlikely to damage the host trees (White et al 2011).…”

Section: Discussionsupporting

confidence: 86%

“…Low infestation intensity allows control using lowcost methods, such as manual removal and pruning, which are unlikely to damage the host trees (White et al 2011). Observations made in our study area, however, suggest that, if management is not frequent, P. theloneura can cover the entire canopy of the tree, a build-up that can lead to eventual host death.…”

Section: Discussionmentioning

confidence: 81%

“…Among the studies on the prevalence of infestation by mistletoes and their relationships with trees in urban areas in Brazil (Rotta et al 2006;White et al 2011;Sulevis and Biondi 2014;Leal et al 2006;Maruyama et al 2012), only one (Maruyama et al 2012), investigated the mechanism of infestation experimentally. As a result, the information contained in many studies is not useful for devising effective management measures to combat the spread of mistletoe infestations in urban areas.…”

Section: Discussionmentioning

confidence: 99%

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Observational and experimental evaluation of hemiparasite resistance in trees in the urban afforestation of Santarém, Pará, Brazil

Silva

Fadini

2017

Acta Amaz.

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One of the problems affecting the quality of urban trees is their infestation by mistletoes (aerial hemiparasite plants of the order Santalales). Identification of the main types of trees infested, and of the causes of infestation patterns, can help infestation control and the planning of efficient planting regimes. In this sense, the aim of this study was to evaluate the patterns of hemiparasite infestation in trees in an Amazonian urban environment. We aimed to answer (1) which species of mistletoes occur on urban trees in the city of Santarém, in the Brazilian Amazon; (2) what is the proportion and intensity of infestation on infected trees; and (3) if differences in infestation rates among tree species can be explained by mistletoe-tree compatibility. We assessed mistletoe incidence and intensity of infestation on trees in the main avenues of the city. To evaluate the role of mistletoe-tree compatibility in the observed parasitism patterns, we carried out a seed inoculation experiment with seeds of the most abundant mistletoe, Passovia theloneura. Seeds were planted on three tree species (Andira inermis, Handroanthus serratifolius, and Mangifera indica). The overall infestation rate was 19.3%, with exotic tree species more infested than natives. The experiment showed that incompatibility between P. theloneura and the native H. serratifolius is primarily responsible for the observed non-infestation. Mistletoes germinated on A. inermis grew better than those on M. indica, contrary to the infestation prevalence found in the field, suggesting that patterns of infestation are also influenced by seed deposition processes. KEYWORDS: Loranthaceae, mistletoe, tree parasites, urban silvicultureAvaliação observacional e experimental da resistência a hemiparasitas em árvores da arborização urbana de Santarém, Pará, Brasil RESUMO Um dos problemas que afetam a qualidade das árvores urbanas é sua infestação por ervas-de-passarinho (hemiparasitas aéreas da ordem Santalales). Identificação das principais espécies de árvores infestadas e das causas da infestação pode ajudar a controlar as ervas-de-passarinho e orientar o plantio de novas espécies de árvores. Nesse sentido, o objetivo deste estudo foi avaliar o padrão de infestação de hemiparasitas em árvores em um ambiente urbano da Amazônia. Nós buscamos responder: (1) quais espécies de ervas-de-passarinho ocorrem nas árvores urbanas da cidade de Santarém, na Amazônia Brasileira, (2) qual é a proporção e intensidade de infestação nas árvores afetadas e (3) se diferenças nas taxas de infestação entre as espécies de árvores podem ser explicadas pela compatibilidade entre ervas-de-passarinho e hospedeiro. Nós amostramos árvores nas principais avenidas da cidade. Para avaliar o papel da compatibilidade entre a erva-de-passarinho e o hospedeiro nos padrões de parasitismo observados, conduzimos um experimento de inoculação de sementes com a erva-de-passarinho mais abundante, Passovia theloneura. Sementes foram plantadas em três espécies de hospedeiros (Andira inermis, Hand...

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“…As ervas-de-passarinho são conhecidas principalmente pela ação nociva que provocam aos hospedeiros e pelo prejuízo a silvicultura, agricultura (principalmente nas plantações de cítricos) e também diminuindo a qualidade da arborização urbana (TORRES & MONTILLA, 1997;ROTTA, 2001;LEAL et al 2006;MATHIASEN et al, 2008;WHITE et al 2011, PEREIRA, 2014.…”

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LORANTHACEAE Juss. NO ACERVO DO HERBÁRIO DA AMAZÔNIA MERIDIONAL, ALTA FLORESTA, MATO GROSSO

Silva¹,

Soares-Lopes²,

Verão³

et al. 2015

Enciclopédia Biosfera

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RESUMO Loranthaceae é considerada a família com maior diversidade de espécies dentre as plantas hemiparasitas. Distribui-se por todo território brasileiro nos diferentes domínios fitogeográficos, porém são poucos os relatos de ocorrência da espécie para a Amazônia Meridional. Desta forma, o presente trabalho teve como objetivo apresentar uma listagem para as espécies de Loranthacae depositadas no Herbário da Amazônia Meridional-HERBAM, Alta Floresta, Mato Grosso. A validação das identificações dos espécimes de Loranthaceae ocorreu em agosto de 2015 pelos autores com base nos materiais revisados por especialista, nas revisões taxonômicas recentes e imagens disponibilizadas por herbários virtuais. Loranthaceae está representada por 13 espécies distribuídas em cinco gêneros. A espécie Tripodanthus acutifolius (Ruiz & Pav.) Tiegh. é o primeiro registro genérico para o domínio amazônico. O gênero com maior riqueza específica foi Psittacanthus. O presente trabalho possui informações importantes sobre a Flora do Mato Grosso e, portanto, para atualização da "Lista de Espécies da Flora do Brasil".

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Análise Da Ocorrência De Erva-De-Passarinho Na Arborização Da Universidade Federal De Sergipe, Campus São Cristóvão

Cited by 9 publications

References 7 publications

Hemiparasitism effect on Baccharis dracunculifolia DC. and consequences to its major galling herbivore

Hemiparasitism effect on Baccharis dracunculifolia DC. and consequences to its major galling herbivore

Observational and experimental evaluation of hemiparasite resistance in trees in the urban afforestation of Santarém, Pará, Brazil

LORANTHACEAE Juss. NO ACERVO DO HERBÁRIO DA AMAZÔNIA MERIDIONAL, ALTA FLORESTA, MATO GROSSO

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