Livros e Publicações
URI permanente para esta coleçãohttps://bdc.icmbio.gov.br/handle/cecav/1481
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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 Redescription and Geographical Distribution of a Rare Microteiid Lizard: Rhachisaurus brachylepis (Dixon, 1974) (Squamata: Gymnophthalmidae).(South American Journal of Herpetology, 2020-03-30)Rhachisaurus brachylepis is a poorly known lizard species that was described from Serra do Cipó in the southern portion of the Serra do Espinhaço (Espinhaço Mountain Range), Minas Gerais, Brazil. Almost 50 years after its original description, the species remains known from only a few specimens and brief comments in the literature. Here, we present new data on morphological variation (meristics, morphometrics, and color pattern) within the species on the basis of the reexamination of old specimens housed in herpetological collections and recently collected material. We also provide an emended diagnosis, as well as diagnostic characters relative to other genera of Brazilian gymnophthalmids. We provide additional information on the species’ geographical distribution and an updated distribution map, extending its range and filling in some gaps. We also establish the precise placement of the type locality. The new records of R. brachylepis indicate that the size of its geographical distribution is greater than previously thought. Further, we discuss the controversial record of the species from northern 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 Body Condition and Blood Biochemistry of Free-Range Caiman latirostris in Northeast Brazilian Atlantic Forest(Journal of experimental Zoology. A Ecol Integr Physiol., 2025) Gabriela Mota Gama; Luiza Figueiredo Passos; Adriano Pereira Paglia; Marcos Eduardo CoutinhoThe Atlantic Forest broad-snouted caiman (Caiman latirostris) inhabits regions within one of the world's most ecologically diverse ecosystems, yet few studies have explored the relationship between body condition, blood biochemistry, and environmental factors in the wild. Our study investigated the effects of sex, ontogeny, habitat, and environmental variables on the body condition and blood biochemistry of free-ranging caimans from the state of Alagoas, Northeast Brazil. From 2020 to 2022, we captured 75 caimans across three sites in different seasons. Results revealed sex-specific responses to seasonal and Interannual weather changes, with females showing higher body condition in the wet season, while males peaked in the dry season. Elevated glucose, total protein, albumin, triglycerides, and fructosamine were linked to higher body condition and larger individuals, while elevated aspartate aminotransferase to low body condition. Seasonal rainfall influenced blood parameters, with the dry season associated with higher creatinine, calcium, and alanine aminotransferase levels, and the wet season with higher total protein, sodium, and potassium. Differences in glucose, alkaline phosphatase, and gamma-glutamyl transferase across sites pointed to physiological effects of human activities. Blood biochemical values varied widely, with some exceeding reported species ranges. These findings highlight the need to interpret physiological data within the context of local habitat and environmental conditions. Conservation strategies should go beyond species presence and habitat preservation, incorporating pollution control. Our study advances understanding of Caiman latirostris ecophysiology, offering valuable insights for the conservation and management of crocodilian populations in both wild and captive environments.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