Publications by authors named "Guilherme Maricato"
The genus Kogia includes two species that are some of the least known cetacean species around the globe. Here, we investigated the occurrence, behavior, and habitat suitability of dwarf sperm whales (K. sima) off St.
View Article and Find Full Text PDFSepetiba Bay, located in southwestern Rio de Janeiro state, in southeastern Brazil, is a region of extreme anthropogenic impact, and is home to a large population of Guiana dolphins, which face increasing and cumulative pressures on their physical health. Cetacean body condition provides a useful indicator for the evaluation of the conservation status of marine mammals. Given this, the present study quantified the proportion of dolphins with different body condition scores and assessed temporal variation in these scores between 2017 and 2022 through the analysis of photographic records.
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- - The study investigates the impact of marine microplastics on coral species in the isolated Trindade and Martim Vaz Islands in Brazil, highlighting concerns for marine biodiversity and reef ecosystems.
- - Four coral species were examined for their ability to ingest and accumulate microplastics, revealing a high concentration across all species studied, with no significant differences based on distance from the coast.
- - Various types of microplastics were found, predominantly polyethylene, indicating widespread contamination in these remote coral colonies, which poses a significant threat to their health and the overall marine environment.
Article Synopsis
- The common bottlenose dolphin, Tursiops truncatus, shows limited ecological and behavioral research in Brazilian waters, especially concerning the offshore ecotype, which is crucial in the Southwest Atlantic.
- This study documents the first sightings and behaviors of this dolphin species in two Marine Protected Areas off the Cabo Frio coast, noting 15 sightings and photo-identifying 429 individual dolphins.
- Findings reveal that most dolphins exhibited low residency rates, preferred depths of 20-70m about 10km offshore, and primarily displayed traveling behavior, with larger groups observed during foraging, while human development poses potential threats to their habitat.