Navegando por Autor "Pellegrini, Thais Giovannini"
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Item Aspectos ecológicos de uma caverna granítica no Sul de Minas Gerais(Espeleo Tema, 2012) Bernardi, Leopoldo Ferreira de Oliveira; Pellegrini, Thais Giovannini; Taylor, Erika Linzi Silva; Ferreira, Rodrigo LopesItem Cave lithology influencing EPT (Ephemeroptera, Plecoptera, Trichoptera) assemblages and habitat structure in south-eastern Brazil(2021-06-18) Pacheco, Gabrielle Soares Muniz; Pellegrini, Thais Giovannini; Ferreira, Rodrigo LopesKnowing how cave lithology influences the benthic macroinvertebrate fauna is important for conservation and management of subterranean aquatic systems. However, those influences are still poorly understood, especially in the Neotropics. This study aimed to understand how cave lithology can influence benthic EPT assemblages by assessing the differences in the EPT genera structure in caves of two distinct lithologies (quartzite and limestone) and determining possible differences in the lithology habitats. To achieve this, hydrochemistry data and biological samples were collected in six allogenic cave streams from the two aforementioned lithologies. Results showed that both the assemblages from different lithologies and within the same lithology are statistically different, thus indicating probable regional influences beyond local ones. Our results also pointed out an effect of lithology on the substrate parameters, which in turn affected the EPT composition. Cave lithology affects water chemical and physical characteristics, thus supporting different EPT assemblages. The results of this study provide a foundation for future investigation on how the lithology can influence the benthic macroinvertebrate fauna and should lead to means of predicting such fauna on the basis of the cave lithology and water chemistryItem Coarazuphium auleri sp. n. (Carabidae: Zuphiini), a new troglobitic ground-beetle in Central-Western Brazil(2021-12-12) Pellegrini, Thais Giovannini; Bichuette, Maria Elina; Vieira, LetíciaABSTRACT In this paper, we describe Coarazuphium auleri sp. n. Until now, the species occurred in a single limestone cave, located at Nobres municipality (state of Mato Grosso – Central-Western Brazil). The new species comprises an apterous species from the genus Coarazuphium with the complete absence of hindwings, eyes are composed of very reduced eyes-scars, depigmentation and ommatidia are not evident. We also provide an updated key for species identification of Coarazuphium from the most recently published one. We followed the criteria of IUCN and classified the species as Critically Endangered – CR, IUCN criteria B1ab(iii)+2ab(iii), since the species has a restricted geographical distribution; estimated occurrence length <100 km2; population in few locations and with a continued decline in area, extent, and quality of habitat. According to Brazilian law, the existence of a critically endangered species places the Lagoa Azul cave as one of maximum relevance.Item Coarazuphium tapiaguassu (Coleoptera: Carabidae: Zuphiini), a new Brazilian troglobitic beetle, with ultrastructural analysis and ecological considerations(Zootaxa, 2011) Ferreira, Rodrigo Lopes; Pellegrini, Thais Giovannini- Distribuição espacial da família Staphylinidae em cavernas do território brasileiro(INPE, 2009-04) Ferreira, Rodrigo Lopes; Pellegrini, Thais Giovannini; Lima, Mariana Peres; Carvalho, Luis Marcelo Tavares deO objetivo deste estudo é utilizar o sistema de Informações Geográficas como ferramenta para espacializar a distribuição da família de coleópteros denominada Staphylinidae nas cavernas brasileiras
- Feeding in the dark: are stonefly nymphs good indicators of reference conditions for cave streams? A case study using gut content analysis in Brazilian quartzite caves(2020-02-11) Costa, Bárbara Goulart; Ferreira, Rodrigo Lopes; Pellegrini, Thais GiovanniniBenthic macroinvertebrates are considered important bioindicators of water quality, and their distribution is influenced by several factors, including food availability. This feeding is an essential factor for all living beings and determines aspects of temporal and spatial population dynamics and relations between individuals and their respective habitats. The present work aimed to analyze the diet of nymphs of the order Plecoptera associated with quartzite caves located in southern Minas Gerais state, Brazil. The stomach contents of 79 specimens were analyzed, and many were empty (40.5 %). Among the nymphs with stomach contents, the most frequent content was fine particulate organic matter. The high amount of individuals with empty content may indicate a low tolerance of these organisms to subterranean environments.
Item Management in a neotropical show cave: planning for invertebrates conservation(International Jornal of Speleology, 2012-07) Ferreira, Rodrigo Lopes; Pellegrini, Thais GiovanniniItem New species of Neoteneriffiola (Acari: Trombidiformes: Teneriffiidae) from Brazilian caves: geographical distribution and ecological traits(International Journal of Acarology, 2012) Bernardi, Leopoldo Ferreira de Oliveira; Pellegrini, Thais Giovannini; Ferreira, Rodrigo LopesItem Structure and interactions in a cave guano-soil continuum community(European Journal of Soil Biology, 2013) Pellegrini, Thais Giovannini; Ferreira, Rodrigo LopesItem Three new troglobitic Coarazuphium (Coleoptera, Carabidae, Zuphiini) species from a Brazilian hotspot of cave beetles: exploring how the environmental attributes of caves drive ground-beetle niches(2022-06-10) Pellegrini, Thais Giovannini; Ferreira, Rodrigo Lopes; Zampaulo, Robson de Almeida; Vieira, LetíciaThree new species of troglobitic beetles of the genus Coarazuphium are described from specimens collected in iron ore caves in the Flona de Carajás in Brazil, doubling the number of known species for the Carajás region. The new species of Coarazuphium are morphologically similar to the already described species from the same region and are distributed in a small geographic range. From all Coarazuphium species of the region, including the new ones, two stand out, C. spinifemur and C. xingu sp. nov., which are the smallest Coarazuphium species. Both species have shorter legs and antennae when compared to the others. The main characteristic that differentiates C. xikrin sp. nov. and C. kayapo sp. nov. from the other two species from the Carajás region, C. tapiaguassu and C. amazonicum, is that the new species have more numerous setigerous punctures dorsally on the head. With the three new species added to the six already described congeners, the area of intense mining of the Carajás region includes the highest diversity of obligatory cave-dwelling beetles in Brazil, representing a hotspot of cave beetles. Coarazuphium xikrin sp. nov. and C. amazonicum co-occur in some of the caves of the Carajás region, which is possible due to putative niche differentiation between the species. These findings highlight the importance of maintaining legal provisions that ensure the preservation of caves, especially those most relevant regarding physical and biotic aspects, which is crucial for the conservation of Brazilian subterranean biodiversity.