A5066098822- Marine animal studies overview
- Cephalopods and Marine Biology
- Isotope Analysis in Ecology
- Marine and fisheries research
- Animal Vocal Communication and Behavior
- Ichthyology and Marine Biology
- Coral and Marine Ecosystems Studies
- Marine and coastal plant biology
- Avian ecology and behavior
- Turtle Biology and Conservation
- Environmental and Cultural Studies in Latin America and Beyond
- Underwater Vehicles and Communication Systems
- Mercury impact and mitigation studies
- Arctic and Antarctic ice dynamics
- Marine Bivalve and Aquaculture Studies
- Coastal and Marine Management
- Wildlife Ecology and Conservation
University of Valparaíso
2013-2024
University of Chile
2018-2021
Clínica Alemana
2014-2018
Resumen.-Estudios de dieta del lobo marino común (LMC) en Chile sugieren que esta especie es un depredador oportunista y generalista, cuya varía dependiendo la distribución las especies presas varia ciones espaciotemporales abundancia dichas presas.Sin embargo, estos estudios han sido esporádicos, limitados espacialmente basados análisis contenidos estomacales, lo no permite integral compos ición sus potenciales diferencias espacio-temporales.En este estudio se analizó composición d ieta LMC...
Abstract Fin whales ( Balaenoptera physalus ) have been documented along the coast of Chile since early 20 th century; however, information on their ecology and movement patterns remains poorly known. In spring 2015, six implantable satellite tags were deployed fin around marine reserves Isla Chañaral Islas Choros‐Damas (approximately 29°S) to evaluate movements habitat use off Chile. A switching state–space model was used estimate predicted track as well behavioural modes classified...
Our understanding of how air-breathing marine predators cope with environmental variability is limited by our inadequate knowledge their ecological and physiological parameters. Due to wide distribution along both coasts the sub-continent, South American sea lions (Otaria byronia) provide a valuable opportunity study behavioral plasticity predator in different environments. We measured oxygen stores diving behavior throughout most its range, allowing us demonstrate that ability vary across...
Off Northern Chile, baleen whales use the area around Isla Chañaral as a feeding ground where they forage on euphausiids. is part of highly productive Humboldt Archipelago (∼ 28°S-29°S) within Current System (HCS). In this study, we seek to understand sub-mesoscale spatial distribution fin and blue their prey using systematic opportunistic visual sighting data acoustic backscatter zooplankton from an Acoustic Zooplankton Fish Profiler (AZFP); examine oceanographic dynamics wider with...
Four fin whale sub-species are currently considered valid: Balaenoptera physalus in the North Atlantic, B. p. velifera Pacific, quoyi and patachonica Southern Hemisphere. The last, not genetically validated, was described as a pygmy-type sub-species, found low to mid latitudes of Genetic analyses across hemispheres show strong phylogeographic structure, yet geographic coverage middle Hemisphere impeded an assessment within area, well evaluating validity . New mtDNA sequences from...
Abstract We analyzed spatial, temporal, and age/sex variation in the diet of South American sea lions ( SASL , Otaria byronia ) southern Chile via δ 13 C 15 N isotope analysis, with emphasis on exotic farmed feral salmonids as a source prey for this generalist predator. Isotope mixing models show that primary consumed by were demersal benthopelagic fishes. Individuals sampled summer outer coast had higher values than those from winter or inner due to consumption high trophic level fish. also...
Abstract Fatty acids have been widely used as trophic biomarkers in marine mammals. However, for the South American sea lion, most abundant otariid eastern Pacific, there is no information about blubber fatty and their link to diet. Here, we compare acid profiles of lions from two distinct oceanographic regions northern southern Chile. Their vary greatly between regions, suggesting dietary differences at a spatial scale. The C22:6ω3 was more region, likely associated with consumption...
Abstract Establishing marine species distributions is essential for guiding management and can be estimated by identifying potential favorable habitat at a population level incorporating individual‐level information (e.g., movement constraints) to inform realized space use. In this research, we applied combined modeling approach tracking data of adult female juvenile South American sea lions ( Otaria flavescens ; n = 9) from July November 2011 make predictions populations in northern Chile....
Whale-watching (WW) is an activity which has been increasing worldwide due to the great interest of tourists and economic benefits it provides local communities. However, reported that this affects behavioral patterns some cetaceans, although for species such as fin whale ( Balaenoptera physalus ) not extensively studied. To identify effects WW on species, we studied its traveling resting behaviors in a locality north-central Chile from 2015 2018. Using theodolite, calculated response...
Resumen.-Los estudios de variaciones abundancia las poblaciones a distintas escalas temporales permi ten comprender cómo dichas fluctúan en el tiempo y cuáles son los factores que influyen sobre variaciones.Se analizaron patrones del lobo marino común (SASL, Otaria flavescens) diaria, mensual anual 2 loberas reproductivas norte Chile.Adicionalmente, se evaluó efecto El Niño anuales la especie.La lobos marinos Punta Negra (PN) disminuyó desde 1994 2011, mientras Patache (PP) aumentó, aunque...
Biotic and abiotic factors determine presence habitat use pattern of individuals within a population. In this study, presence, behavior, resighting patterns transient bottlenose dolphins (Tursiops truncatus) were evaluated in relation to upwelling downwelling events marine reserve North-Central Chile, between 2005 2009. The study period was divided into four phases according wind direction intensity: upwelling-favorable (UF), transition I (TI), convergence (Cv) or downwelling, II (TII)....
Coastal resident and pelagic nonresident bottlenose dolphins, Tursiops truncatus, have been described in north-central Chile. Using long-term residence data (over 13 years of photo-identification) genetic mtDNA information, we analysed the social dynamics through time variation this population, evaluated its sociogenetic interaction with nonresidents. Pelagic dolphins exhibited a higher level diversity than coastal residents significant difference structure was detected between them. Based...
AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 23:39-47 (2014) - DOI: https://doi.org/10.3354/ab00604 Latitudinal variation in local productivity influences body condition of South American sea lion pups Maritza Sepúlveda1,2,*, Danai Olea1, Pablo Carrasco3,4, Macarena Santos-Carvallo1,2, Jorge Castillo5, Renato A. Quiñones3,4 1Centro de Investigación y Gestión los Recursos...
The marine otter (Lontra felina) inhabits almost the entire coast of Chile.Its population density and its response to several anthropic threats are unknown.The objective this study was analyze compare patterns habitat use, frequency sightings, behavior in two coastal areas Valparaíso Region: Cachagua Quintay.Twenty simultaneous visits these localities were made, 10 summer fall.The observation area each locality divided into quadrants parallel evaluate use.We evaluated number type...
TABLE S1 Morphometric information of the seven South American sea lion (Otaria byronia) pups collected in northern Chile. Please note: The publisher is not responsible for content or functionality any supporting supplied by authors. Any queries (other than missing content) should be directed to corresponding author article.