RAN
URI permanente desta comunidadehttps://bdc.icmbio.gov.br/handle/cecav/1401
Centro Nacional de Pesquisa e Conservação de Répteis e Anfíbios
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6 resultados
Resultados da Pesquisa
Item Notes on the conservation status, geographic distribution and ecology of Bothrops muriciensis Ferrarezzi & Freire, 2001 (Serpentes, Viperidae).(North-Western Journal of Zoology, 2012) FREITAS, Marco Antonio de; FRANÇA, Daniella Pereira Fagundes de; GRABOSKI, Roberta; UHLIG, Vivian; VERÍSSIMO, DiogoThe Atlantic forest of Brazil is one of the most biodiverse regions in the world. However, in the last centuries this biome has suffered unparalled fragmentation and degradation of its forest cover, with only 8% of its original area remaining. The region of Murici, in the state of Alagoas, Brazil, houses some of the largest forest fragments of Atlentic forest and is of one of the regions within the biome with more threatened and endemic taxa. One of this is Bothrops muriciensis, a snake species previously only known from the three records used to describe it. We present six new records for Bothrops muriciensis along with additional information and inferences on the species geographic distribution and natural history. Lastly we use the new information to assess the species according to the IUCN Redlist criteria and suggest that the species should be placed in the Critically Endangered category under criteria IUCN Redlist criteria B2ab(iii). The effective management of this species will require further data on its ecology, geographic distribution and population dynamics but its survival will more likely depend on an effective protection of the Murici Ecological Station, the only locality where Bothrops muriciensis has so far been recorded.Item Mining code changes undermine biodiversity conservation in Brazil.(Environmental Conservation, 2017-08-10) VILLÉN-PÉREZ, SARA; MENDES, POLIANA; MENDES, POLIANA; NÓBREGA, CAROLINE; CÓRTES, LARA GOMES; MARCO JUNIOR, PAULO DEProtected areas (PAs) are vital for the conservation of Brazil's biodiversity (Barber et al.2014). However, they are at risk of a downgrade in legal status due to economic pressures on natural resources (Bernard et al.2014; De Marques & Perez 2014; Pack et al.2016). Mining is one of the most urgent environmental threats in Brazil (Ferreira et al.2014; El Bizri et al.2016), with plans in place for a 10-fold increase in the number of mining projects in c. 8 years. If all were developed, the Brazilian territory occupied by mining would increase 23-fold in the near future. Currently, 12 697 projects covering 98 × 105 ha are planned within PAs. Licensing and exploitation of 53% of this land will depend on the approval of three bills that intend to authorize mining in areas where it was formerly forbidden. Here, we analyse the potential consequences of the approval of these new policies for conservation.Item Demographic and growth analysis of broad snouted caiman (Caiman latirostris) in a disturbed environment in southeastern Brazil.(Herpetological Journal, 2014-10) Passos, Luiza Figueiredo; Coutinho, Marcos Eduardo; Young, Robert JohnCrocodilian life history traits exhibit strong size and age dependence, which is determined, ultimately, by how fast individuals grow. Crocodilian population dynamics are dependent on environmental conditions such as local temperatures and hydrology. From February 2010 to October 2011 we conducted monthly spotlight surveys to study a broad-snouted caiman population at the Três Marias Hydro-electric Reservoir, southeast Brazil. A total of 12 spotlight surveys were conducted (17.3 to 48.0 km in length), and animals were captured, measured and marked whenever possible. Data were obtained on population size, sex structure, survival, distribution and growth. The number of caimans counted, including hatchlings, varied from 6 to 78 per survey. Marked individuals showed a growth rate that varied between 0.0 and 0.3 cm*day-1 SVL, and between -6.0 and 8.0 g*day-1 body mass. Polyphasic growth was associated with rainfall and water level, which in turn were associated with changes in temperature and diet. The species seems to be resistant to the ecological impacts of damming, an important conservation conclusion considering the large number of hydroelectric dams within the species’ range in Brazil.Item The Ornithodoros capensis group (Acari: Argasidae): a morphorlogical diagnosis and molecular characterization of O. capensis sensu stricto from Queimada Grande Island, Brazil.(Systematic & Applied Acarology, 2017) MUÑOZ-LEAL, SEBASTIÁN; DIAS, RICARDO A.; ABRAHÃO, CARLOS R.; LABRUNA, MARCELO B.Ornithodoros capensis sensu lato (s. l.) is a worldwide-distributed group of soft ticks that parasitize birds in insular and continental lands. It is currently composed of 11 morphologically closely related species. Several viral and bacterial pathogens, and particularly Coxiella-like endosymbiont organisms have been described coexisting with ticks of this group. Since it last report in 1983, the presence of O. capensis s. l. in Brazil has remained undocumented. By a morphological analysis of larvae and a molecular characterization of ticks and Coxiella genes we describe for the first time O. capensis sensu stricto in Brazil from specimens collected on Queimada Grande Island, in São Paulo stateItem Mining code changes undermine biodiversity conservation in Brazil.(Environmental Conservation, 2018) VILLÉN-PÉREZ, SARA; MENDES, POLIANA; NÓBREGA, CAROLINE; CÓRTES, LARA GOMES; MARCO JUNIOR, PAULO DEProtected areas (PAs) are vital for the conservation of Brazil's biodiversity (Barber et al.2014). However, they are at risk of a downgrade in legal status due to economic pressures on natural resources (Bernard et al.2014; De Marques & Perez 2014; Pack et al.2016). Mining is one of the most urgent environmental threats in Brazil (Ferreira et al.2014; El Bizri et al.2016), with plans in place for a 10-fold increase in the number of mining projects in c. 8 years. If all were developed, the Brazilian territory occupied by mining would increase 23-fold in the near future. Currently, 12 697 projects covering 98 × 105 ha are planned within PAs. Licensing and exploitation of 53% of this land will depend on the approval of three bills that intend to authorize mining in areas where it was formerly forbidden. Here, we analyse the potential consequences of the approval of these new policies for conservation.Item Don’t put all your eggs in one basket(Biological Conservation, 2019-10) Eisemberg, Carla Camilo; Vogt, Richard Carl; Balestra, Rafael Antônio M.; Reynolds, Stephen J.; Christian, Keith A. A.The Brazilian Government established the Amazon Turtle Project (Projeto Quelônios da Amazônia – PQA) in 1975 to monitor and protect the main nesting sites of Amazon River turtles. The PQA has become the largest-scale and longest-term wildlife conservation initiative in the Brazilian Amazon. We evaluated the outcomes of the PQA across 11 protected localities over 30 years (1977–2008). Inside the protected localities, one population of Podocnemis expansa has declined and four have seen an increase in numbers. The PQA conservation efforts for P. unifilis were not as successful as those of Podocnemis expansa, but were sufficient to stabilize or increase populations. These results suggest that there is a minimum effort necessary for positive conservation outcomes, which was not achieved for Podocnemis sextuberculata. Given the lack of correlation between initial nesting numbers and positive population trends, the current level of success in a given locality cannot be used as a tool to prioritize future protection efforts. We recommend that the PQA should maintain or increase its coverage due to the high levels of local unpredictability. If current harvest trends are maintained, it is likely the only surviving populations of P. expansa will be within protected areas. Considering the scope of the PQA and the period that it has been operational, it is surprising how little recognition it has received; the lack of national and international awareness of its achievements may be one of the main reasons behind the lack of support from the Brazilian Government. © 2019 Elsevier Ltd