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Spiders associated with Psychotria carthagenensis Jacquin. (Rubiaceae): vegetative branches versus inflorescences, and the influence of Crematogaster sp. (Hymenoptera, Formicidae), in South-Pantanal, Brazil.
Faria, R R; Lima, T N.
Affiliation
  • Faria RR; Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal do Mato Grosso do Sul, Campo Grande, MS, Brazil. roger.faria@yahoo.com.br
Braz J Biol ; 68(2): 229-32, 2008 May.
Article in En | MEDLINE | ID: mdl-18660949
The aim of this study was to analyze: i) the spider community in vegetative and reproductive branches of Psychotria carthagenensis concerning relative abundance, guild composition and body size distribution; ii) ant abundance in different types of branches and iii) the spider behavior when experimentally put in contact with inflorescences covered with ants. There was no difference between vegetative and reproductive branches in relation to spider abundance, composition of guilds and body size distribution of spiders. However, there was a significant difference in ant abundance. In the behavioral experiment, 90% of the spiders were expelled from inflorescences by ants; in control treatment, 100% remained in the inflorescences. The ant density in different parts of the plant may explain the spider distribution.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Ants / Spiders / Psychotria Type of study: Risk_factors_studies Limits: Animals Country/Region as subject: America do sul / Brasil Language: En Journal: Braz J Biol Journal subject: BIOLOGIA Year: 2008 Document type: Article Affiliation country: Brazil Country of publication: Brazil

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Ants / Spiders / Psychotria Type of study: Risk_factors_studies Limits: Animals Country/Region as subject: America do sul / Brasil Language: En Journal: Braz J Biol Journal subject: BIOLOGIA Year: 2008 Document type: Article Affiliation country: Brazil Country of publication: Brazil