Soil type preference and the coexistence of two species of wandering spiders (C tenus amphora and C. crulsi : Ctenidae) in a rainforest in Central Amazonia
作者: Erika PortelaRodrigo Hirata WillemartThierry Ray Gasnier
刊名: The Journal of Arachnology, 2013, Vol.41 (1), pp.85-87
来源数据库: BioOne Complete
DOI: 10.1636/P12-59.1
关键词: Araneaebehaviorhabitat selectionmicrohabitat
原始语种摘要: The wandering spiders Ctenus amphora Mello-Leitão 1930 and Ctenus crulsi Mello-Leitão 1930 are sympatric in central Amazonian rainforests; however, the former is more abundant in sandy soils and the latter in clay soils. In previous studies authors suggested that C. crulsi is competitively superior on clay soils and avoids sandy soils. Thus, we hypothesized that these species differ in their responses to the soil type. To test this, we placed 37 C. amphora and 30 C. crulsi in chambers providing two choices (sand or clay) and compared the proportion of observations in each to evaluate both species' preferences. Ctenus crulsi significantly preferred clay to sand ( P < 0.01), while C. amphora showed no evidence of preference between two types of soil. We discuss the possible...
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  • amphora 月形藻属
  • rainforest 雨林
  • wandering 偏斜
  • coexistence 共存
  • sympatric 同域的
  • spiders 高级纱罗
  • preference 优选
  • preferred 可取
  • abundant 丰富的
  • chambers 法官秘密评议室