Novas espécies de Entomobryoidea (Collembola, Entomobryomorpha) em áreas de Caatinga da Chapada Diamantina, Nordeste do Brasil
Springtails are very diversified microarthropods, often found in the soil. They are members of the edaphic mesofauna, where they compose the basis of soil food chain, as well as they act in the cycling of nutrients and organic matter decomposition. Considered as bioindicators of soil quality, the...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
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Brasil
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/27296 |
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| Resumo: | Springtails are very diversified microarthropods, often found in the soil. They are members of
the edaphic mesofauna, where they compose the basis of soil food chain, as well as they act in
the cycling of nutrients and organic matter decomposition. Considered as bioindicators of soil
quality, they provide rapid responses to environmental variations, including those associated
with anthropogenic action. The superfamily Entomobryoidea is the richest in species among
the Collembola, being constituted mainly by epiedaphic species, with Entomobryidae and
Paronellidae as its main families, both well represented in Brazil. The focus of this study was
to identify and describe new species following specialized literature, in addition to expanding
the list of taxa records for the region. The collections were carried out in Bahia State, in the
municipalities of Abaíra, Andaraí and Lençóis, using pitfall traps and entomological aspirators
to capture specimens directly from the substrate. In the laboratory it was performed the
screening, morphotyping and assembly of the individuals in slide for microscopy. Four new
species were described: Dicranocentrus sp. nov.; Entomobrya sp. nov.; Seira (Lepidocyrtinus)
sp. nov. and Trogolaphysa sp. nov. These species were compared for distinctive morphological
aspects such as colour pattern, number of spines of the metatrochanteral organ, dorsal head and
body chaetotaxy, and also the chaetae composition of the labial region. Nine records were
cataloged, and added to previous listings, totaling 24 species and morphospecies for the
Chapada Diamantina. The results presented in this work point to this ecoregion as an area rich
in Entomobryoidea, potentially with more new species than expected. This survey promotes the
knowledge of the occurrence of the group in Caatinga areas and, consequently, leads to a greater
understanding of biodiversity in this area. In addition, this taxonomic study generates data that
can make feasible the realization of future conservation measures. |
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