CECAV
URI permanente desta comunidadehttps://bdc.icmbio.gov.br/handle/cecav/1
Centro Nacional de Pesquisa e Conservação de Cavernas
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4 resultados
Resultados da Pesquisa
Item Bat flies (Diptera: Streblidae) of Phyllostominae and Stenodermatinae (Chiroptera: Phyllostomidae) bats from cocoa and natural areas of Amazonia(2023-11-12) França, Júlia de Oliveira; Alexandre, Rafaela Jemely Rodrigues; Correia, Letícia Lima; Souza, Loyriane Moura; Graciolli, Gustavo; Aguiar, Ludmilla Moura de Souza; Vieira, Thiago BernardiStreblidae and Nycteribiidae are ectoparasitic flies exclusive to bats, with an estimated diversity of over 100 species in Brazil. Its distribution and abundance may be influenced by host’s shelter, geographic distribution, behavior, and size. Bat species respond differently to environmental changes, such as changing land use and land cover for cocoa production in the eastern Amazon. We sought to investigate the community of ectoparasite flies (Diptera: Streblidae) on Phyllostominae and Stenodermatinae (Chiroptera: Phyllostomidae) bats and the parasite-host interactions in cacao plantations and natural areas in the Brazilian Amazon. Twenty-two bats were collected, reaching a total of 54 flies. The observed richness was 15 (estimated in 24) species, with Trichobius dugesioides being the most abundant. The cacao plantations showed greater richness, eight species more than the natural ones, however, showing the absence of a specific distribution pattern for each area. This result may be because human interference in cocoa areas are barely perceptible, at least for the bats studied. In addition, the adoption of cabruca-type cocoa plantations can influence the result, as previously shown in the literature.Item A Speleological Relevance Assessment Protocol Based on the Geodiversity of Natural Underground Cavities in Different Lithotypes in Brazil(2022-08-16) Massuqueto, L.L.; Pontes, H.S.; Fernandes, L.A.An assessment protocol of speleological relevance for natural underground cavities in different Brazilian lithotypes is presented here based on geodiversity elements. The protocol, whose development is based on geoconservation guidelines, aims to contribute to better national speleological legislation regarding determination of speleological relevance. For this purpose, four elements of geodiversity present in natural cavities are considered: their set of geological features (geoforms), their development patterns (shape), dimensions, and hydrological elements. In order that the protocol can be applied in a judicious way, nine analytical parameters are conceptualized here with their weights and contributions numerically defined. The protocol should not, however, be seen as definitive, but a proposal subject to review and update.Item Bats (Mammalia, Chiroptera) and bat flies (Diptera, Streblidae) found in the largest sandstone cave of Brazil(2023-05-12) Vieira, Thiago Bernardi; Correia, Letícia Lima; Pena, Simone Almeida; Gomes-Almeida, Brenda ; Urbieta, Gustavo Lima; Graciolli, Gustavo; Palheta, Leandra Rose; Caçador, Antônio Wesley Barros; Aguiar, LudmillaBats provide essential ecosystem services and some are cave dependent. Caves favour the association of bats with ectoparasite Diptera, however, they are poorly sampled in the Amazon biome. Here we present the first description of a community of bats and bat flies from the largest sandstone cave in Brazil, the Planaltina cave, located in the municipality of Brasil Novo, state of Pará. Diptera were removed from captured bats and taken to the laboratory for identification. From nine species of bats belonging to four families we recorded 17 species of Diptera, 13 were monoxenous. A possible explanation for the monoxenous parasites collected is that flies have poor survival in unusual hosts. These results are an indicator that the Streblid species are host-specific since even if the hosts take refuge in the same cave, they will not share their parasites. Therefore, the present study provides important information on the parasite-host dynamics in a cave, thus highlighting the importance of cave as are essential shelters for bat species and, despite reported cases of cohabitation, mixed colonies are unlikely to form.Item Geoheritage of a Brazilian Semi‑Arid Environment: the Seridó Aspiring UNESCO Geopark(2022-03-02) da Silva, Matheus Lisboa Nobre; do Nascimento, Marcos Antonio Leite; Costa, Silas Samuel dos SantosSince the end of 2019, two new Brazilian areas are candidates to join UGG/GGN; one of them is Seridó Aspiring UNESCO Geopark, located in the country’s Northeast, state of Rio Grande do Norte. It is named after a native Brazilian word, of tapuia tradition — ceri-toh — which means “little or no foliage; little shade,” something that well defnes its landscape, typical of the Caatinga Biome, which is only found in Brazil, and semiarid climate. The local geology comprises eight lithological clusters dating from the Paleoproterozoic to recent. It is a highly diverse territory, whose inventory of geological heritage comprises 21 geosites, with diferent types of interests, such as mineralogical, petrological (plutonic and volcanic), hydrological, geomorphological, and paleontological, among others, of regional to international relevance. They are integrated with the communities of the region through culture, economy, tourism, and science. Many are recognized by population as a heritage of Seridó. This paper describes all the geosites of the proposed geopark, also analyzing socio-cultural and environmental factors, and hazards related to geological heritage and its surroundings, such as cavities and archeological sites, Caatinga biome conservation, water use, Quilombola and settlement communities, urban proximity, risks in slopes, and especially with regard to the relationship of mining activities in the region, which since the 1940s has boosted the local and regional economy, with the exploitation of scheelite in the Brejuí Mine, the largest mine of its kind in South America, currently one of the geopark’s geosites that has a high scientifc value, notably of international relevance.