A5014081918- Fish biology, ecology, and behavior
- Paleontology and Evolutionary Biology
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Evolution and Paleontology Studies
- Wildlife Ecology and Conservation
- Turtle Biology and Conservation
- Ichthyology and Marine Biology
- Amphibian and Reptile Biology
- Wildlife-Road Interactions and Conservation
- Animal and Plant Science Education
- Genetic diversity and population structure
- Marine animal studies overview
- Primate Behavior and Ecology
- Geography and Environmental Studies
- Identification and Quantification in Food
- Zoonotic diseases and public health
- Cephalopods and Marine Biology
- Hydrology and Sediment Transport Processes
- Agricultural and Food Sciences
- Land Use and Ecosystem Services
- Aquatic Invertebrate Ecology and Behavior
- Environmental Sustainability and Education
- Insect and Arachnid Ecology and Behavior
- Vector-Borne Animal Diseases
Brazilian Agricultural Research Corporation
2015-2024
National Institute of Amazonian Research
2003
Building bridges between environmental and political agendas is essential nowadays in face of the increasing human pressure on natural environments, including wetlands. Wetlands provide critical ecosystem services for humanity can generate a considerable direct or indirect income to local communities. To meet many sustainable development goals, we need move our trajectory from current destructive wiser wetland use. The article contain proposed agenda Pantanal aiming improvement public policy...
Rates of growth and survival in wild populations are affected by the physical environment, biotic interactions, density-dependent processes, such as fecundity. However, relative importance these factors long-lived reptiles is poorly understood. We analyzed rates Melanosuchus niger Caiman crocodilus coexisting two areas Brazilian Amazon with very different environmental characteristics. Growth at sites were similar, but M. grew more slowly area higher productivity density caimans. same...
Species discovery methods utilizing coalescent-based approaches are powerful tools for detecting cryptic lineages within morphological conservative groups, thus being an important methodology of integrative taxonomic research. Crocodilians a classic example morphologically conserved group where coalescence-based species delimitation analyses resulted in the and potentially new species. In this study, we used several single locus to analyze phylogenetic diversity most widespread alligatorid...
Flooding of nests and predation were identified as the major mortality agents eggs Caiman crocodilus yacare in Brazil. Nests on floating grass mats forests flooded 1989, but only 1990. Predation was high forest nests, my presence may have increased predation. No nest attacked by predators. The period sex determination C. c. can extend to 40 d incubation. I predicted temperature with a multiple regression model incorporating weather variables during temperatures for correlated ratio clutch....
Schneider’s dwarf caiman Paleosuchus trigonatus is one of the smallest living crocodilians. Due to its broad distribution, cryptic behavior, and small home range, species well suited for study phylogeographic patterns on a continental scale. Additionally, this under threat due habitat loss, trade harvest, but considered at low conservation risk by IUCN. In present we test hypothesis that P. comprised geographically structured lineages. Phylogenetic reconstructions mitochondrial cytochrome b...
The crocodylian dwarf species (i.e., Osteolaemus sp. and Paleosuchus sp.) that live in the equatorial forests all share peculiarity to present an osteoderm shield which extends beyond dorsal area lies between skull caudal crest symphysis. Here we study both morphology microanatomy of osteoderms palpebrosus (Cuvier, 1807), order assess distribution bone ornamentation over shield, compare porosity with non-dorsal osteoderms. Since ornamental pit excavation are relevant proxies blood vessel...
Caiman crocodilus and Melanosuchus niger occur throughout most of the Anavil- hanas Archipelago, located in lower Rio Negro, Central Amazonia. The observed densities these species vary from 0 to 58 per km shoreline 8 shoreline, respectively. Multiple regression analysis indicated that temperature difference between water air, depth affected density C. during spotlight surveys Archipelago. Percentage illumination by moon, cloud cover, frequency occurrence grass, food availability did not...
Abstract We updated the checklist of mammals from Mato Grosso do Sul, Brazil based on primary records only. One hundred and sixty-six mammal species were listed as occurring in state, 47 them being medium to large, small 73 bat species. The are distributed 31 families: Didelphidae (17 spp.), Dasypodidae (7 Myrmecophagidae (2 Cebidae (1 sp.), Callithrichidae Aotidae Pitheciidae Atelidae Leporidae Felidae Canidae (4 Mustelidae (5 Mephitidae Procyonidae Tapiridae Tayassuidae Cervidae Sciuridae...
We studied growth of the caiman, Caiman crocodilus yacare, in Brazilian Pantanal for 27 years between 1987 and 2013.We recaptured 647 7769 C. c. yacare initially marked an area 50 km2, two ranches. were able to determine size at age accurately 24 male and17 female caimans that had been hatching or less than 1 year old, over periods 5 years. The other 606 used evaluate short-term rates. Age-size relationships estimated using models from Richards family curves (full model, von Bertalanffy...
Abstract The formation of dominance hierarchies in which the female mates with a large dominant male is common among crocodilians. However, there possibility polyandry, females mate multiple partners during single breeding season and generate offspring paternity. In present study, eight pairs heterologous primers developed for Alligator mississippiensis Caiman latirostris were used to determine whether paternity exists Black Caiman, Melanosuchus niger . For such, we analyzed 34 from...
Abstract Globally, illegal sport hunting can threaten prey populations when unregulated. Due to its covert nature, poses challenges for data collection, hindering efforts understand the full extent of impacts. We gathered social media analyze patterns and wildlife depletion across Brazil. collected 2 years (2018–2020) 5 Facebook groups containing posts depicting pictures events native fauna. described mapped these by detailing number hunters involved, species, mean body mass individuals,...
Abstract The dwarf caiman, Paleosuchus palpebrosus, is considered one of the smallest crocodilians. However, our surveys indicate that species regularly reaches larger sizes than usually reported in literature. Most individuals lose tail tips, and we did not encounter any individual with snout-vent length (SVL) > 70 cm had an intact tail. P. palpebrosus attains SVL 112.5 (equivalent to a total estimated from 210 cm) streams around Pantanal, 106 (198 flooded forest central Amazonia, 100...
Nests of Schneider's dwarf caiman, Paleosuchus trigonatus, were located in the forests around three streams that drain into Xingu River, Brazilian Amazonia, October 2014. Camera traps installed at edge four nests to document predators and female parental care. At two nests, females unsuccessfully defended their against one or more giant armadillos, Priodontes maximus, nine-banded Dasypus novemcinctus. Both armadillo species responded attack by fleeing returning on opposite side nest going...
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Abstract Post-hatching parental care is common in crocodilians, but the little information available for Cuvier's dwarf caiman (Paleosuchus palpebrosus) indicates that they show post-hatching care. During surveys undertaken between 2005 and 2011, we counted captured groups of hatchlings observed presence or absence attending adults streams around Pantanal, along Guaporé-Madeira River flooded forest central Amazonia, Brazil. We found 37 hatchlings, which 29 were accompanied by adults. 13...