A5052766567- Isotope Analysis in Ecology
- Marine animal studies overview
- Turtle Biology and Conservation
- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Marine Bivalve and Aquaculture Studies
- Physiological and biochemical adaptations
- Fish Ecology and Management Studies
- Cassava research and cyanide
- Amphibian and Reptile Biology
- Paleontology and Evolutionary Biology
- Indigenous Health and Education
- Ichthyology and Marine Biology
- Fish biology, ecology, and behavior
Universidade de São Paulo
2012-2025
Methodist University of Piracicaba
2017
ABSTRACT Tools to discriminate products from captive and wild sources will improve wildlife sustainability, stable isotopes of carbon nitrogen can be potentially useful for this. In this study, we evaluated δ 15 N 13 C in Caiman latirostris skins individuals (from Argentina Brazil), Argentina), leathers tanned skins) both Argentina). addition, compared the isotopic signatures caiman claws caimans Brazil. The main goal study was evaluate possible differences variability between skins,...
The Yellow-spotted River Turtle ( Podocnemis unifilis Troschel, 1848) and the South American (Podocnemis expansa (Schweigger, 1812)) are two turtles species that widely distributed have ecological, economic, cultural importance in Amazon basin. Although sympatric regarding most of their distribution, few studies addressed coexistence these species. To examine this, we analyzed trophic level primary carbon source from diets both Baixo Araguaia, Tocantins, Brazil, using stable isotope analyses...
Abstract Motivation SIA‐BRA is a data set that compiles stable carbon (C) and nitrogen (N) isotope ratios of terrestrial aquatic animals sampled in Brazilian biomes coastal marine areas. Stable are helpful animal ecology for several reasons; instance, they can be used to investigate trophic niches, energy sources (diet tracing) track migration patterns. The Neotropics considered one the most undersampled regions world. Given Brazil continental country where dietary species under‐assessed, we...
Strategies to minimise intraspecific competition are common in wild animals. For example, individuals may exploit food resources at different levels of the chain. Analyses stable isotopes particularly useful for confirming variations an niche because chemical composition animals tends reflect both consumed and habitats occupied by species. However, studies using this methodology investigate neotropical crocodilians scarce. This study aimed verify existence ontogenetic sexual variation...
Natural variation in stable isotope ratios is a useful tool diet studies. However, the correct interpretation of isotopic data reliant on proper estimates discrimination factors. This study aimed to describe magnitude factors carbon and nitrogen isotopes between tissues (Δ13Ctissue-diet Δ15Ntissue-diet) Broad-snouted Caiman (Caiman latirostris) verify potential differences age classes. The (δ13C δ15N) were determined samples two tissue types (claw scute) collected from 18 captive animals 15...
Abstract Large predators have disproportionate effects on their underlying food webs. Thus, appropriately assigning trophic positions has important conservation implications both for the themselves and prey. Large-bodied are often referred to as apex predators, implying that they many levels above primary producers. However, theoretical considerations predict higher lower position with increasing body size. Nitrogen stable isotope values ( δ 15 N) increasingly replacing stomach contents or...
Information on the home range and movement patterns of Neotropical crocodilians is scarce for most species, despite being essential developing management conservation plans. The broad-snouted caiman (Caiman latirostris) a crocodilian with wide geographical distribution in South America. This species inhabits artificial reservoirs (e.g., small weirs) silvicultural areas. However, its use space such circumstances still unknown. present study aims to estimate silviculture-dominated landscape...
Ecological niche is the multidimensional space comprising resources used by an organism. Intraspecific variation in resource exploitation common reptile populations to maximize coexistence of individuals. The use stable isotope analysis effective tool when there are variations exploitation, since it can provide quantitative information about food consumption and habitat use. Mesoclemmys vanderhaegei (Bour, 1973) a medium-sized turtle with limited distribution south central Brazil Paraguay....
Rationale: Rapid coagulation of reptile blood often hinders its use in studies remote and difficult-to-access areas, necessitating chemical preservation. Therefore, understanding the potential effects anticoagulants on isotopic compositions is essential to avoid issues interpreting results ecological studies. In this study we aimed verify whether storage time tissue can influence broad-snouted caiman ( Caiman latirostris ), an ectothermic top predator from eastern South America. Methods:...
Rapid coagulation of reptile blood often hinders its use in studies remote and difficult-to-access areas, necessitating chemical preservation. Therefore, understanding the potential effects anticoagulants on isotopic compositions is essential to avoid issues interpreting results for ecological studies. In this study we aimed verify whether storage time tissue can influence broad-snouted caiman (