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Comparative analysis of feeding habits and dietary niche breadth in skates: the importance of body size, snout length, and depth
(Springer, 2018-09)
Skates (Elasmobranchii, Rajiformes) are a morphologically conservative group of bentophagous chondrichthyan fishes with a high degree of endemism, that occur on marine soft bottoms. Subtle morphological aspects and bathymetric ...
Diet and niche breadth and overlap in fish communities within the area affected by an Amazonian reservoir (Amapá, Brazil)
(Anais da Academia Brasileira de Ciências, 2014-03)
We investigated the niche breadth and overlap of the fish species occurring in four environments affected by the Coaracy Nunes reservoir, in the Amapá Brazilian State. Seasonal samples of fishes were taken using a standard ...
Feeding habits of the threatened aquatic Andean frog Telmatobius rubigo (Anura: Telmatobiidae)
(Amphibian & Reptile Conservation, 2020-11)
The aquatic Andean frogs of the genus Telmatobius have evolved closely with the aquatic ecosystems of the Andes of South America. The Laguna de Los Pozuelos’ Rusted Frog (Telmatobius rubigo) is a Threatened and endemic ...
Plastic ingestion risk is related to the anthropogenic activity and breeding stage in an Antarctic top predator seabird species
(Pergamon-Elsevier Science Ltd, 2020-08)
During the last decades plastic pollution has become a common issue in marine environments. Studies on seabirds have focused on species that ingest plastics mistaken for prey or indirectly through their preferred prey or, ...
Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
(Inter-Research, 2017-10-13)
The study of species’ niches is becoming increasingly important in ecological research with the growing need to understand how species and their habitat respond to rapid environmental changes. This kind of study is especially ...
The effects of spatial scale and isoscape on consumer isotopic niche width
(2018)
1. The mean and variance of ecological variables are dependent on sampling attributes such as the coverage of environmental heterogeneity (sampling extent) and spatial scale. Trophic niche width is often approximated by ...
Diet and feeding strategy of smooth butterfly ray Gymnura micrura in northeastern Brazil
(Wiley-Blackwell, 2013-12-01)
The purpose of the present study was to analyze the diet of the smooth butterfly ray Gymnura micrura using qualitative and quantitative approaches to describe the feeding spectrum as well as ecological aspects related to ...
Isotopic analysis (δ13C, δ18O) of Pleistocene megafauna in Brazilian Intertropical Region: paleoecological and paleoenvironmental interpretations
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ecologia e Recursos Naturais - PPGERNCâmpus São Carlos, 2019-02-11)
By paleoecological reconstruction based on carbon isotopic analysis in Bahia State and Mato Grosso do Sul State, recently inserted in the Brazilian Intertropical Region (BIR), it was possible to infer ecological aspects ...
Alimentary niche partitioning in the Galapagos sea lion, Zalophus wollebaeki
(Marine Biology, 2010)
Sea lions are generally considered opportunistic feeders. However, studies from different areas suggest their diet consists mostly of four to five types of prey. Previous studies in Galapagos sea lions have identified at ...
Niche specificity of two glypthelmins (trematoda) congeners infecting leptodactylus chaquensis (anura: Leptodactylidae) from Argentina
(American Society of Parasitologists, 2009-08)
Sixty-five specimens of the frog Leptodactylus chaquensis were infected by 2 Glypthelmins species (Glypthelmins repandum: 41%, and Glypthelmins palmipedis: 38%) in the small intestine. This study was designed to determine ...