Aquatic insects in organic and inorganic habitats in the streams on the Central Brazilian savanna

  • Leandro S. Brasil Universidade Federal do Pará
  • Nubia França da Silva Giehl Universidade do Estado de Mato Grosso
  • Joana Darc Batista Universidade do Estado de Mato Grosso
  • Bethânia Oliveira de Resende Universidade do Estado de Mato Grosso
  • Helena Soares Ramos Cabette Universidade do Estado de Mato Grosso

Resumen

A major part of the mechanisms that affects species distribution is related to environmental conditions. Within a stream channel the accumulation of substrates like litter, roots, stones, gravel and sand create habitats that act as shelter and/or food source to aquatic communities, in this way supporting, or not, the establishment of different species. Based on this fact we verified the structure of aquatic insect communities in organic and inorganic habitats within Cerrado streams. Tested for differences on genera richness (i), individual abundance (ii) and genera composition (iii), and also (iv) verified if there are any indicator genera, which are faithful and specific to organic or inorganic habitats. Sampled organic (litter) and inorganic (sand and gravel) substrates in five sections of three streams and collected individuals of the orders Ephemeroptera, Plecoptera, Trichoptera, Odonata and Heteroptera (EPTOH). Community composition differed between habitats, with organic ones having higher richness and abundance, besides being the only habitat that presented faithful and specific genera (six). It is argued that this difference may be caused due to shelter and food supply provided by organic substrates.

Publicado
2017-12-31
Como citar
BRASIL, Leandro S. et al. Aquatic insects in organic and inorganic habitats in the streams on the Central Brazilian savanna. Revista Colombiana de Entomología, [S.l.], v. 43, n. 2, p. 286-291, dic. 2017. ISSN 0120-0488. Disponible en: <http://nexus.univalle.edu.co/index.php/SOCOLEN/article/view/5961>. Fecha de acceso: 21 jul. 2018 doi: https://doi.org/10.25100/socolen.v43i2.5961.
Sección
Artículos

Palabras clave

Diversidad Beta, tricópteros, moscas efímeras, plecópteros, insectos acuáticos