Navegando por Assunto "Reptilia"
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- A Conservação e Pesquisa das Tartarugas Marinhas no Nordeste Brasileiro pelo Projeto Tamar(2016) Marcovaldi, Maria Ângela; Thomé, João Carlos A.; Bellini, Claudio; Silva, Augusto César C. D. da; Santos, Armando J. B.; Lima, Eduardo H. S. M.; Feitosa, Ricardo S. C.; Goldberg, Daphne W.; Lopez, Gustave; Marcovaldi, GuyO Projeto TAMAR é um programa de conservação de tartarugas marinhas coordenado pelo Centro TAMAR (ICMBio) e executado em parceria com a Fundação Pró-TAMAR. Pioneiro no Brasil, iniciou suas atividades em 1980, quando as colônias reprodutivas de tartarugas marinhas mais expressivas apresentavam o ciclo interrompido, a maioria das fêmeas que subiam às praias eram abatidas e tinham seus ovos coletados para consumo. Trinta e cinco anos depois, com uma atuação que abrange cerca de 1.100 km de litoral, o número de ninhos para quatro das cinco espécies que ocorrem no Brasil começam a dar sinais de recuperação. Os desafios de hoje mudaram com o surgimento de novas ameaças, dentre as quais podemos ressaltar, a pesca incidental, desenvolvimento costeiro, poluição e mudanças climáticas. Com uma extensa experiência em educação ambiental, sensibilização pública, geração de 1800 oportunidades de trabalho local e produção de conhecimento, o Projeto TAMAR é referência mundial de iniciativas bem sucedidas para a conservação marinha.
Item Herpetofauna from a protected area situated in a biogeographic transition zone in Central South America(Biota Neotropica, 2025) Tainá Figueras Dorado-Rodrigues; Rafael Martins Valadão; Luciana Mendes Valério; Carolina Potter de Castro; Christine StrüssmannSeveral herpetofaunal inventories have been conducted in the Neotropical region. However, many areas remain to be investigated, and this is particularly true of transition zones between distinct ecoregions. Herein we describe the richness, species composition, and abundance of herpetofauna from a scarcely known portion of the Brazilian Cerrado and assess the taxonomic similarities of the assemblages among the sampled habitats and between neighbouring ecoregions. A mid-term herpetological inventory was conducted from May 2009 to January 2011 at Serra das Araras Ecological Station (SAES) using pitfall traps with drift fences in five distinct forested and open habitats. In these and in additional habitats, visual and acoustic searches and occasional encounters were also used to access the local composition of the herpetofauna, together with literature data and examination of specimens deposited in collections. We also compared the species composition at SAES on a regional scale with those of other 29 localities previously studied in nine South American ecoregions. We documented 123 species at the SAES (39 amphibians and 84 reptiles), 112 of which were recorded during the field inventory. Richness was highest in riparian forests and lowest in semi-deciduous dry forest and cerrado woodland. Riparian forests also presented the highest number of exclusive species, while only one exclusive species was found in cerrado woodland. Cerrado sensu stricto and cerrado parkland contained 53 and 40 species, including seven and 10 exclusive species, respectively, and showed greater similarity than the sampled forested habitats. In comparison to other localities in the Cerrado (including transition zones), SAES is home to one of the most diverse assemblages of herpetofauna. This may be attributed to continued sampling efforts and to the marked environmental heterogeneity resulting from the topographic profile and confluence of several ecoregions. Amphibian species composition at SAES is more similar to a nearby locality also studied in the Cerrado and to Chiquitano Dry Forest assemblages, while the reptile species composition is nested among the assemblages studied in the Cerrado. Our findings indicate that the herpetofauna of SAES is rich and representative of the regional biodiversity, with species composition evidencing its transitional character.- Nesting Biology and conservation of the leatherback sea turtle (Dermochelys coriacea) in Espírito Santo State, Brazil, 1988-1989 to 2003-2004.(Chelonian Conservation and Biology, 2007-05-01) THOMÉ, J. C. A; BAPTISTOTTE, C; MOREIRA, L. M. P; SCALFONI, J. T; ALMEIDA, A. P; RIETH, D. B; BARATA, P. C. RIn Brazil, the only area where regular leatherback sea turtle (Dermochelys coriacea) nesting is known to occur is located on the northern coast of the state of Espı´rito Santo, around latitude 198S. In this study, we present the field methods used by Projeto TAMAR-IBAMA (the Brazilian Sea Turtle Conservation Program) in the state of Espı´rito Santo and analyze data on leatherback nesting from 1988–1989 to 2003–2004. In that period, 527 nests were observed in the study area. The annual number of nests varied between 6 (in 1993–1994) and 92 (in 2002–2003). Between 1995–1996 and 2003–2004, the annual number of nests increased at about 20.4% per year on average. Among the 527 clutches observed, 358 (67.9%) were left in situ, 50 (9.5%) were relocated to another spot on the beach, 88 (16.7%) were relocated to open-air beach hatcheries, and 31 clutches (5.9%) did not have their management decision recorded. Curved carapace length of nesting females was in the range of 139–182 cm (mean ¼ 159.8 cm). At present, there is no significant alteration of the nesting habitat in Espı´rito Santo, egg poaching has been reduced to very low levels, and there is no subsistence hunting for sea turtles of any species. The main challenges to leatherback conservation currently are the incidental capture in artisanal fisheries operating close to nesting beaches and in high seas fisheries operating in the South Atlantic, as well as activities related to the oil industry. An overview of Projeto TAMAR’s actions addressing current sea turtle conservation issues in the State of Espı´rito Santo is presented.
- Reproductive biology and conservation status of the loggerhead sea turtle (Caretta caretta) in Espirito Santo State, Brazil.(2000) BAPTISTOTTE, C; THOMÉ, J. C. A; BJORNDAL, KThe reproductive biology of loggerheads nesting in Espírito Santo, Brazil, is evaluated for six nesting seasons (1991/1992 through 1996/1997), through data gathered by Projeto TAMAR-IBAMA, the Brazilian sea turtle conservation program. Mean curved carapace length of nesting females was 102.7 cm (n=198). Mean clutch size for clutches with more than 50 eggs was 119.7 (n=3664), and clutch size was significantly correlated with female body size. Management practices had significant effects on hatching success and incubation time. Mean hatching success of nests left in situ was 68.3% (n=879), of undepredated nests left in situ was 79.9% (n=751), and of nests moved to hatcheries and not depredated was 67.7% (n=2786). For nests moved to hatcheries, hatching success declined significantly with increasing time interval between oviposition and transfer to the hatchery. Mean incubation time was 59.5 days for nests left in situ (n=572) and 57.2 days for nests moved to hatcheries (n=2179). Incubation time declined significantly throughout the nesting season as temperatures increased; we conclude that sex ratio of hatchlings also shifts to more females as the season progresses. There was significant annual variation for all parameters. A short review of the conservation status of loggerheads in Espírito Santo State is also presented.
Item Reptilia, Squamata, Amphisbaenidae, Amphisbaena brasiliana (Gray, 1865): range extension.(Herpetology Notes, 2013) Dorado-Rodrigues, Tainá Figueras; Strüssmann, Christine; Lima, Francco Antonio Neri de Souza e; Valadão, Rafael Martins; Motta, TamíAmphisbaena brasiliana is a Brazilian endemic amphisbaenid (Bérnils and Costa, 2012) described after a single specimen obtained in the municipality of Santarém, state of Pará (Gray, 1865: 448). Besides the type locality and vicinities (Gans, 1971; Spencer, 2012), thespecies is known from other three municipalities in the same state: Belém (Gans, 1971), Aveiro (Rio Cupari; Strauch, 1883) and Parauapebas (" Serra dos Carajás " ; Cunha et al., 1985). Two vouchered but imprecise additional records from localities along the " rio Amazonas " (Amazon River), and one undocumented record for Paraíba do Norte, state of Paraíba, were mentioned by Gans (1971), but this latter record was considered by that author as " questionable ". The species has also been found in Guarantã do Norte, extreme north of the state of Mato Grosso (Mott and Vieites, 2009; Pinna et al., 2010), the southernmost record until now. Herein we report three new municipality records for Amphisbaena brasiliana in the states of Pará and Mato Grosso which greatly extend the known distribution of this species. In addition, we provide data on habitats and a photo of a live specimen. Specimens were collected under IBAMA/SISBIO permits # 02001.000822/2008-71 and # 19518-1, and voucher specimens are deposited at Coleção Zoológica de Vertebrados, Universidade Federal de Mato Grosso (UFMT; Cuiabá, Mato Grosso, Brazil). Records accessed through the HerpNET (Spencer, 2012) data portal are held in the Museum of Comparative Zoology (Harvard University, Cambridge, Massachusetts, USA). In December 2006, a single individual of Amphisbaena brasiliana (UFMT 7785) was found in a semi-deciduous forest in the right margin of the reservoir of the hydroelectric power plant Cabeça de Boi, rio Cabeça de Boi, municipality of Alta Floresta, Mato Grosso (10º 19' S, 56º 58' W). In October 2009, another individual (UFMT 8477) was found in an alluvial semi-deciduous forest on the left margin of the reservoir of Herpetology Notes, volume 6: XXX-XXX (2013) (published online on XX Xxxx 2013)Item Squamate Reptiles of the central Chapada Diamantina, with a focus on the municipality of Mucugê, state of Bahia, Brazil.(Check List, 2012-02-01) Marco Antonio, de Freitas; Diogo, Veríssimo; Vivian, UhligWe present the first species list of squamate reptiles for the central region of the Chapada Diamantina, with a focus on the municipality of Mucugê, state of Bahia Brazil. The data provided were mostly collected in the Caraíbas estate, during vegetation clearing operations for agriculture. The remnant records were collected from roadkills encountered in Mucugê and neighboring municipalities. We found 64 species of squamate reptiles including 35 species of snakes, 25 of lizards and four of amphisbaenians. These records have already yielded three species descriptions with others likely to follow. This is evidence of the poorly documented herpetological diversity of the Chapada Diamantina. The present work highlights the need for further research and the potential of less traditional data sources such as roadkills to improve the knowledge of the herpetofauna of extensive and megadiverse countries like Brazil.