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      Spatio-temporal microhabitat use by two co-occurring species of scorpions in Atlantic rainforest in Brazil.

      Zoology (Jena, Germany)
      Animals, Behavior, Animal, Brazil, Ecosystem, Population Dynamics, Scorpions, physiology, Seasons, Species Specificity

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          Abstract

          With the increasing devastation of the tropical rain forest, there is a critical need to understand how animal forest communities are structured and how habitat degradation will affect these communities. We conducted a field survey to investigate the microhabitat preferences of two co-occurring species of scorpions (Tityus pusillus and Ananteris mauryi) in a fragment of Atlantic rainforest, as well as their abundance and their ecological niche, during both the dry and rainy seasons. Behavioural aspects related to the use of the environment and the proportions of juveniles and adults are also described. The occurrence of intra- and interspecific coexistence was assessed by active search. In addition, pitfall catches were used to assess the structure of the population in the dry and rainy seasons. The differential patterns of spatial distribution in the litter layers provided evidence of partial niche partitioning between the two coexisting scorpion species depending on age and climatic conditions. Abundance, foraging behaviour and age structure (juveniles and adults) were seasonally influenced. We conclude that the diverse and subtle behaviours involved in interaction and habitat use may facilitate species coexistence. Resource partitioning and refuge sharing on a temporal and/or spatial scale, as well as predation pressure, may drive the dynamics and spatial distribution of scorpion species in the rain forest environment. Copyright © 2013 Elsevier GmbH. All rights reserved.

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          Author and article information

          Journal
          23664851
          10.1016/j.zool.2013.01.002

          Chemistry
          Animals,Behavior, Animal,Brazil,Ecosystem,Population Dynamics,Scorpions,physiology,Seasons,Species Specificity

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