Host specificity of a Brazilian mistletoe, Struthanthus aff. polyanthus (Loranthaceae), in cerrado tropical savanna

Arruda, Rafael; Carvalho, Lucélia Nobre; Del‐Claro, Kleber

doi:10.1016/j.flora.2005.07.001

Cited by 49 publications

(48 citation statements)

References 35 publications

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“…In the Amazon forest, differences in wood density among tree species have been shown to be unrelated to the likelihood of infection by several Loranthaceae and Viscaceae mistletoes (Pereira 2014). Preferences may also be driven by other host traits, such as bark thickness and xylem resistance, and by the behavior of seed-dispersing frugivorous birds, such as seed treatment (seed manipulation in the bill, bill wiping on twigs and gut passage time) and the frequency of seed deposition, the number of seeds deposited, or a combination of the two (Reid 1989;López de Buen & Ornelas 1999;Arruda et al 2006;Fadini 2011;Guerra & Pizo 2014). In addition, mistletoe survival probability may be affected by potential differences among host plants in terms of the risk of postdispersal seed predation (Fadini et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Host specificity and experimental assessment of the early establishment of the mistletoe Phoradendron crassifolium (Pohl ex DC.) Eichler (Santalaceae) in a fragment of Atlantic Forest in southeast Brazil

et al. 2014

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Mistletoe establishment relies heavily on a seed reaching a proper host plant. Small frugivorous birds usually disperse large numbers of mistletoe seeds. However, in the field, mistletoes are absent from some potential available hosts. We investigated whether the mistletoe Phoradendron crassifolium has some preferences for specific host trees in a fragment of Atlantic Forest in southeast Brazil. We surveyed 397 tree individuals of 50 species within 25 families. Seven of those species (14%) bore P. crassifolium infections. Although prevalence at the individual level was low (11.6%), there were marked deviations in infection levels among species and families. Most (87%) of the infections (40 of 46) occurred in species belonging to the families Anacardiaceae (Lithraea molleoides and Tapirira guianensis) and Siparunaceae (Siparuna guianensis), which nevertheless accounted for only 26% of the potential individual hosts (103 of 397). We also performed an experiment simulating bird behavior. We inoculated 480 mistletoe seeds to the bark of four potential hosts in field, following the fate of the seeds for five months. No differences in host preference were observed. The low specificity detected at the local level was confirmed by a survey of exsiccata collected over the geographical distribution of the mistletoe, suggesting that P. crassifolium prevalence is more dependent on dispersal limitation than on mistletoe-host compatibility.

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Section: Discussionmentioning

confidence: 99%

Host specificity and experimental assessment of the early establishment of the mistletoe Phoradendron crassifolium (Pohl ex DC.) Eichler (Santalaceae) in a fragment of Atlantic Forest in southeast Brazil

et al. 2014

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“…Many factors may determine the local degree of host specifi city in mistletoes, e.g., the relative abundance of hosts (Norton & Carpenter 1998), bird perch preferences (Monteiro et al 1992;Cazetta & Galetti 2007), branch architecture (Arruda & Carvalho 2004;Arruda et al 2006), bark thickness (Sargent 1995) and mistletoe-host compatibility (perhaps determined by chemical, physiological and physical processes at the mistletoe-host interface) (Lamont 1983;López de Buen & Ornelas 2002;Fadini 2011). Birds provide the initial fi lter in determining the frequency of seed distribution onto the available hosts, whereas the hosts provide the fi nal fi lter for mistletoe establishment.…”

Section: Mistletoe-host Interactionsmentioning

confidence: 99%

“…In the neotropical region, this rule fi ts well for some cases. For example, Arruda et al (2006) showed that some of the tree species with higher relative abundances in Cerrado were also the most parasitized by the mistletoe Struthanthus polyanthus (Mart. ex Schult.…”

Section: Mistletoe-host Interactionsmentioning

confidence: 99%

“…Th ese factors (host relative abundance, bird perch preferences and mistletoehost compatibility) establish the foundation for the development of mistletoe-host interactions. Other characteristics, such as bark rugosity, bark thickness and twig inclination, could play important roles in determining the frequency of distribution of established mistletoes on host trees but they are unlikely to aff ect the range of parasitized hosts (Arruda et al 2006;Fadini 2011). While ecological research has been conducted on the host-mistletoe association from a plant-parasite perspective, other less-studied ecological interactions may also be important.…”

Section: Mistletoe-host Interactionsmentioning

confidence: 99%

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Ecology of neotropical mistletoes: an important canopy-dwelling component of Brazilian ecosystems

et al. 2012

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Ecology of neotropical mistletoes: an important canopy-dwelling component of Brazilian ecosystems RESUMO (Ecologia de ervas-de-passarinho Neotropicais: um importante componente do dossel de ecossistemas brasileiros). Ervas-de-passarinho têm sim sido regularmente estudadas em países temperados por afetar negativamente espécies cultivadas e fl orestas manejadas. Em comparação com ambientes temperados pouco se conhece sobre a ecologia das ervas-de-passarinho neotropicais. Desta forma, é necessário maior conhecimento sobre o grupo porque são importantes elementos de comunidades vegetais, atuando como recurso-chave para polinizadores, dispersores de sementes e herbívoros. Através de uma combinação de trabalhos clássicos já publicados com evidências empíricas recentes, nós apresentamos padrões emergentes da interação entre ervas-de-passarinho com os organismos associados e questionamentos para estudos adicionais. Existe um crescente interesse neste grupo no Brasil. E embora existam informações sobre dispersão de sementes, estudos sobre biologia reprodutiva são raros e representam um campo a ser explorado. O conhecimento da biologia básica das ervas-de-passarinho será relevante para modelar sua distribuição espacial usando uma abordagem metapopulacional ou epidemiológica. Nesta revisão nós sumarizamos os principais estudos conduzidos na região Neotropical para fornecer um panorama atual das pesquisas desenvolvidas, bem como novas ideias para futuras investigações, especialmente no Brasil. Palavras ABSTRACT(Ecology of neotropical mistletoes: an important canopy-dwelling component of Brazilian ecosystems). Mistletoes have been studied in temperate countries regularly because they can be pests of cultivated plants and forest plantations. In comparison with temperate habitats, little is known about the ecology of mistletoes in the Neotropics. More emphasis should be given to neotropical mistletoes because they could be important elements of plant communities, acting as key resources for pollinators, seed dispersers and herbivores. Using a combination of fi ndings from early mistletoe studies and empirical evidence from several recent case studies, we report emerging patterns of mistletoe interactions with associated organisms and propose aims for further studies. Th ere has been increasing interest in working with mistletoes in Brazil. Although there are some data on the ecology of mistletoe seed dispersal, reproductive biology studies are scarce and represent a wide range of fi eldwork to be explored. Knowledge of the basic biology of mistletoes will be very important for modeling their spatial distribution using metapopulation or epidemiological approaches. In this review, we summarize the studies conducted in the neotropical region in order to provide a framework for current research and new ideas for future investigations of mistletoes, especially in Brazil. Revisão / ReviewActa bot. bras. 26(2): 264-274. 2012.Ecology of neotropical mistletoes: an important canopy-dwelling component of Brazilian ecosystems

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“…In the cerrado, S. polyanthus is a generalist hemiparasitic plant, occurring in association with several hosts (e.g., Kielmeyera coriacea Martius, Pouteria ramiûora (Martius) Radlkofer and Styrax ferrugineus Nees et Martius) (Arruda et al 2006). We initially search the aphids in 70 individuals of S. polyanthus, but these insects were found in 16 plants only (22.85%).…”

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confidence: 99%

Predatory behavior of Pseudodorus clavatus (Diptera, Syrphidae) on aphids tended by ants

Bächtold

Del‐Claro

2013

Rev. Bras. entomol.

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Host specificity of a Brazilian mistletoe, Struthanthus aff. polyanthus (Loranthaceae), in cerrado tropical savanna

Cited by 49 publications

References 35 publications

Host specificity and experimental assessment of the early establishment of the mistletoe Phoradendron crassifolium (Pohl ex DC.) Eichler (Santalaceae) in a fragment of Atlantic Forest in southeast Brazil

Host specificity and experimental assessment of the early establishment of the mistletoe Phoradendron crassifolium (Pohl ex DC.) Eichler (Santalaceae) in a fragment of Atlantic Forest in southeast Brazil

Ecology of neotropical mistletoes: an important canopy-dwelling component of Brazilian ecosystems

Predatory behavior of Pseudodorus clavatus (Diptera, Syrphidae) on aphids tended by ants

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