Data/hora: 01/06/2024 08:49:56

Provedor de dados: 	Acta Botanica Brasilica	
País: 	Brazil	
Título: 	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	
Autores: 	Messias,Patrícia Aparecida; Vidal Jr.,João de Deus; Koch,Ingrid; Christianini,Alexander V.	
Data: 	2014-12-01	
Ano: 	2014	
Palavras-chave: 	Host compatibility; Prevalence; Seed dispersal; Seed predation.	
Resumo: 	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.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000400012	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062014abb3523	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.28 n.4 2014	
Fonte: 	info:eu-repo/semantics/openAccess