A5020714939- Turtle Biology and Conservation
- Amphibian and Reptile Biology
- Ichthyology and Marine Biology
- Bird parasitology and diseases
- Avian ecology and behavior
- Fish biology, ecology, and behavior
- Marine animal studies overview
- Physiological and biochemical adaptations
- Animal Behavior and Reproduction
- Wildlife Conservation and Criminology Analyses
- Wildlife-Road Interactions and Conservation
- Marine Ecology and Invasive Species
- Identification and Quantification in Food
- Animal and Plant Science Education
- Genetic diversity and population structure
- Wildlife Ecology and Conservation
- Rabies epidemiology and control
- Coral and Marine Ecosystems Studies
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- International Environmental Law and Policies
- Evolution and Paleontology Studies
- Parasite Biology and Host Interactions
- Venomous Animal Envenomation and Studies
Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina
2023
Fundação de Amparo à Pesquisa do Estado da Bahia
2013-2022
Instituto Chico Mendes de Conservação da Biodiversidade
2011-2020
American Museum of Natural History
2006-2012
College of Staten Island
2012
Instituto de Pesquisas Cananéia
2012
City University of New York
2012
Fundação de Amparo à Pesquisa do Espírito Santo
2012
Yale University
2012
International Union for Conservation of Nature (United States)
2010-2011
Background Resolving threats to widely distributed marine megafauna requires definition of the geographic distributions both as well population unit(s) interest. In turn, because individual can operate on varying spatial scales, their impacts affect different segments a same species. Therefore, integration multiple tools and techniques — including site-based monitoring, genetic analyses, mark-recapture studies telemetry facilitate robust definitions at biological scales address management...
Where conservation resources are limited and targets diverse, robust yet flexible priority-setting frameworks vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial temporal scales. Marine turtles widely distributed exhibit intra-specific variations in population sizes trends, as well reproduction morphology. However, current global extinction risk assessment do not assess...
Abstract Somatic growth dynamics are an integrated response to environmental conditions. Hawksbill sea turtles ( Eretmochelys imbricata ) long‐lived, major consumers in coral reef habitats that move over broad geographic areas (hundreds thousands of kilometers). We evaluated spatio‐temporal effects on hawksbill a 33‐yr period and 24 study sites throughout the West Atlantic explored relationships between climate indices. compiled largest ever data set somatic rates for hawksbills – 3541...
Abstract Sea turtles are vulnerable to climate change since their reproductive output is influenced by incubating temperatures, with warmer temperatures causing lower hatching success and increased feminization of embryos. Their ability cope projected increases in ambient will depend on capacity adapt shifts climatic regimes. Here, we assessed the extent which phenological could mitigate impacts from (from 1.5 3°C air 1.4 2.3°C sea surface 2100 at our sites) four species turtles, under a...
A method of estimating natural sex ratios hatchlings species with temperature-dependent sexual differentiation from data on incubation durations is described. The was applied to loggerhead turtles (Caretta caretta) nesting in Brazil. Data were collected 11 beaches monitored for up six seasons. It estimated that 82.5% the produced female. strongly female-biased ratio Brazil similar found previously loggerheads using eastern U.S.A. This suggests a hatchling may be feature populations.
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 3:133-143 (2007) - doi:10.3354/esr003133 Conservation status of loggerhead sea turtle in Brazil: an encouraging outlook Maria Ângela Marcovaldi1, Milani Chaloupka2,* 1Projeto TAMAR-IBAMA, Fundação Pró-TAMAR, Caixa Postal 2219, Salvador, Bahia, 40210-970, Brazil 2Ecological Modelling Services Pty Ltd, PO Box 6150,...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 12:263-272 (2010) - DOI: https://doi.org/10.3354/esr00308 Satellite-tracking of female loggerhead turtles highlights fidelity behavior in northeastern Brazil Maria Ângela Marcovaldi1,*, Gustave G. Lopez1, Luciano S. Soares1, Eduardo H. M. Lima1, João C. A. Thomé2, Antonio P. Almeida2 1Fundação Pró-TAMAR, Caixa Postal...
Abstract Somatic growth is an integrated, individual‐based response to environmental conditions, especially in ectotherms. Growth dynamics of large, mobile animals are particularly useful as bio‐indicators change at regional scales. We assembled rate data from throughout the West Atlantic for green turtles, Chelonia mydas , which long‐lived, highly migratory, primarily herbivorous mega‐consumers that may migrate over hundreds thousands kilometers. Our dataset, largest ever compiled sea has...
Testing theories of dispersal is challenging in highly migratory species. In sea turtles, population size, geographic distance, natal homing, and ocean currents are hypothesized to affect dispersal. Little known, however, about these mechanisms turtles foraging along the South American coast. Green feeding at Ubatuba (UB, n = 114) Almofala (AF, 117), Brazil, were sequenced mitochondrial DNA (mtDNA) control region (486 bp) genotyped 7 microsatellite loci test hypotheses. Fifteen mtDNA...
Like all other species of sea turtle, the hawksbill turtle (Eretmochelys imbricata) exhibits temperature-dependent sexual differentiation, with high incubation temperatures producing females and low males. Relatively little is known about sex ratios hatchlings produced by nesting populations turtles. Here we estimate overall seasonal hatchling turtles in Bahia, Brazil, during 6 seasons, based on durations, pivotal temperature, duration. The ratio Bahia from 1991-1992 through 1996-1997 was...
We present long-term data for hawksbill (Eretmochelys imbricata) nesting in the 2 main rookeries Brazil: 1) northern Bahia and Sergipe, where estimated number of nests laid each year increased from 199 1991–1992 season to 1345 2005–2006 2) Rio Grande do Norte, was around 185–475. Adding these results, we estimate that Brazilian grounds between 1530 1820 nests. Data on percentage clutches kept situ by rookery are also presented. The apparent increasing trend Brazil is encouraging seems...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 17:123-132 (2012) - DOI: https://doi.org/10.3354/esr00421 Satellite tracking of hawksbill turtles Eretmochelys imbricata nesting in northern Bahia, Brazil: turtle movements and foraging destinations Maria Ângela Marcovaldi*, Gustave G. Lopez, Luciano S. Soares, Milagros López-Mendilaharsu Fundação Pró-TAMAR, Rubens...
Current understanding of spatial ecology is insufficient in many threatened marine species, failing to provide a solid basis for conservation and management. To address this issue globally endangered green turtles, we investigated their population distribution by sequencing mitochondrial control region segment from the Rocas Atoll courtship area (n = 30 males) four feeding grounds (FGs) Brazil 397), compared our findings published data (nnesting 1205; nfeeding 1587). At Atoll, first Atlantic...
In the South Atlantic Ocean, few data exist regarding dispersal of young oceanic sea turtles. We characterized movements laboratory-reared yearling loggerhead turtles from Brazilian rookeries using novel telemetry techniques, testing for differences in during different periods turtle hatching season that correspond to seasonal changes ocean currents. Oceanographic drifters deployed alongside satellite-tagged allowed us explore mechanisms (passive drift or active swimming). Early transited...
Mitochondrial DNA (mtDNA) sequences were determined for 168 green turtles (Chelonia mydas) nesting at the 3 known rookeries in Brazil: Trindade (n = 99), Atol das Rocas 37), and Fernando de Noronha 16). In addition, 32 sampled on foraging grounds Noronha. Significant genetic structure exists among rookeries, with haplotype frequencies significantly different between other 2 no significant difference contrast to previous reports, we found relationship population size mtDNA diversity when 14...
In this paper, information is presented on green turtle ( Chelonia mydas ) nesting Atol das Rocas (Rocas Atoll), north-eastern Brazil. The temporal distribution of events per season, annual number nests, carapace length females, clutch size, hatching success, incubation period, internesting interval, frequency, observed reproductive lifespan, and remigration period are reported. study included the seasons from 1990 to 2008, but no regular beach monitoring was carried out in 1998 1999. Two...
Understanding the connections between sea turtle populations is fundamental for their effective conservation. Brazil hosts important hawksbill feeding areas, but few studies have focused on how they connect with nesting in Atlantic. Here, we (1) characterized mitochondrial DNA control region haplotypes of immature hawksbills along coast (five areas ranging from equatorial to temperate latitudes, 157 skin samples), (2) analyzed genetic structure among Atlantic populations, and (3) inferred...
MEPS Marine Ecology Progress Series Contact the journal Facebook (Twitter) RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 479:235-250 (2013) - DOI: https://doi.org/10.3354/meps10222 High-use areas, seasonal movements and dive patterns of juvenile loggerhead sea turtles in Southwestern Atlantic Ocean Caren Barceló1,3,5,*, Andrés Domingo2, Philip Miller3, Leonardo Ortega2, Bruno Giffoni4, Gilberto Sales4, Lianne McNaughton5,...