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

被引：51

作者：

Arruda, R ^{[1
]}

Carvalho, LN ^{[1
]}

Del-Claro, K ^{[1
]}

机构：

[1] Univ Fed Uberlandia, Programa Posgrad Ecol & Conservacao Recursos Nat, Inst Biol, BR-38400902 Uberlandia, MG, Brazil

来源：

FLORA | 2006年 / 201卷 / 02期

关键词：

cerrado; hemiparasitic plants; host-parasite interaction; host susceptible; plant architecture;

D O I：

10.1016/j.flora.2005.07.001

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The aim of this study was to determine if the mistletoe Struthanthus aff. polyanthus shows host specificity, and if host abundance and twig architecture influence this specificity in Cerrado (senso strictu). An area of 1.3 ha of natural savanna was sampled for the occurrence of the mistletoe. The twigs of the hosts were classified as vertical or horizontal, and the bark as smooth or rough. We sampled a total of 666 trees in the study site and 118 individuals (17.7%) hosted S. aff. polyanthus. The abundance of mistletoe was significantly affected by the bark type, but not by the twigs inclination. In the cerrado, S. aff. polyanthus seems to be a generalist, with a tendency to be more common on some hosts (Kielmeyera coriacea, Pouteria ramiflora and Styraxjerrugineus), prefering that with rough bark type. (c) 2005 Elsevier GmbH. All rights reserved.

引用

页码：127 / 134

页数：8

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