A5077212605- Marine animal studies overview
- Cephalopods and Marine Biology
- Animal Vocal Communication and Behavior
- Marine and coastal plant biology
- Turtle Biology and Conservation
- Ichthyology and Marine Biology
- Genetic diversity and population structure
- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Coral and Marine Ecosystems Studies
- Arctic and Antarctic ice dynamics
- Identification and Quantification in Food
- Marine and fisheries research
- Isotope Analysis in Ecology
- Mercury impact and mitigation studies
- Bat Biology and Ecology Studies
- Fish Ecology and Management Studies
- Environmental Impact and Sustainability
- Financial Reporting and Valuation Research
- Coastal and Marine Management
- Underwater Acoustics Research
- Finance, Taxation, and Governance
- Remote Sensing and LiDAR Applications
- Maritime Navigation and Safety
- Water Resource Management and Quality
University of Chile
2013-2023
Universidad Mayor
2018-2023
Millennium Institute for Integrative Biology
2021-2023
Institute of Ecology and Biodiversity
2014-2023
Clínica Alemana
2014-2018
University of Valparaíso
2007-2013
While large mass mortality events (MMEs) are well known for toothed whales, they have been rare in baleen whales due to their less gregarious behavior. Although most cases the cause of has not conclusively identified, some whale linked bio-oceanographic conditions, such as harmful algal blooms (HABs). In Southern Chile, HABs can be triggered by ocean-atmosphere phenomenon El Niño. The frequency strongest Niño is increasing climate change. March 2015, far largest reported took place a gulf...
Abstract Twentieth century industrial whaling pushed several species to the brink of extinction, with fin whales being most impacted. However, a small, resident population in Gulf California was not targeted by whaling. Here, we analyzed 50 whole-genomes from Eastern North Pacific (ENP) and (GOC) whale populations investigate their demographic history genomic effects natural human-induced bottlenecks. We show that two diverged ~16,000 years ago, after which ENP expanded then suffered 99%...
The onshore distribution and abundance of the South American sea lion Otaria flavescens along central Chilean coast was estimated during period January-February 2007.Additionally, changes in population 1970-2007 were examined.Population surveys based on photographs taken from boats or aircraft.A total 16301 lions (CI = 16209-16375) counted 33 colonies (6 breeding 27 non-breeding sites).After correction to account for proportion individuals at pups not seen time survey, mean 18179 (95 % CI...
Understanding genetic differentiation and speciation processes in marine species with high dispersal capabilities is challenging. The Chilean dolphin, Cephalorhynchus eutropia, the only endemic cetacean of Chile found two different coastal habitats: a northern habitat exposed coastlines, bays estuaries from Valparaíso (33°02′S) to Chiloé (42°00′S), southern highly fragmented inshore coastline, channels fjords between Navarino Island (55°14′S). With aim evaluating potential existence...
The South American sea lion (Otaria flavescens) is widely distributed along the southern Atlantic and Pacific coasts of America with a history significant commercial exploitation. We aimed to evaluate population genetic structure evolutionary its distribution by analyses mitochondrial DNA (mtDNA) 10 nuclear microsatellites loci. analyzed 147 sequences mtDNA control region genotyped 111 individuals for microsatellite loci, representing six populations (Peru, Northern Chile, Southern Uruguay...
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...
We test the ability of Very High Resolution satellite (VHR) imagery to detect stranded whales using both manual and automated methods. use 2015 mass mortality event in Gulf Penas locality, central Patagonia, Chile, as an initial case study. This was largest known baleen whales, with at least 343 mainly sei (Balaenoptera borealis), documented stranding. However, even such a large number due remote location gulf strandings went unrecorded for several weeks. Aerial boat surveys area were...
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 The complementarity of historical and contemporary processes contributes to understanding the genetic structure continuously distributed marine species with high dispersal capabilities. Cephalorhynchus eutropia, has a continuous coastal distribution strong differentiation identified by nuclear DNA markers. We explored dimension this between northern southern populations evaluate phylogeographic structure. Additionally, we conducted mtDNA microsatellite analyses detect past recent...
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...
Abstract The Chilean dolphin, Cephalorhynchus eutropia, is an endemic species distributed along the central‐southern coast of Chile. Biological and ecological knowledge about this insufficient; it catalogued as Data Deficient "DD" by World Conservation Union. This study provides information on species' occurrence distribution central from January 2000 to March 2001. Monthly land‐based surveys were performed within area, which was divided Maule River outlet, with northern area more influenced...
Abstract The matrilineal long-finned pilot whale presents an antitropical distribution and is divided into two subspecies, one in the temperate seas of Southern Hemisphere other restricted to North Atlantic Mediterranean. Until now, population genetic phylogeographic studies have included localities most its Northern distribution, while only southwestern Pacific has been sampled Hemisphere. We add new data from southeastern published sequences. Low mitochondrial nuclear diversity was...
Ecological information useful for conservation purposes have benefitted from recent and rapid advancements in genetic techniques, revealing unknown aspects of behavior, natural history, population structure demography several aquatic mammal species, many them with concerns. Molecular markers been used to define management units, settle taxonomic uncertainties, control illegal wildlife trade, among others, providing valuable decision-making conserve manage mammals. We review studies applied...
latitudinal range along the South American coastline, from Peru to southern Chile Pacific Ocean, and Brazil Argentina Atlantic including Falkland Islands (King 1983).A global population estimate is unknown, but probably exceeds 200
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...
Abstract The sei whale ( Balaenoptera borealis ) presents a disjointed geographic distribution. Significant genetic divergence between whales from the North Atlantic (NA) and Pacific (NP) have been recorded; however, limited samples Southern Hemisphere (SH) precluded global analysis. largest recorded mass mortality event occurred in Golfo de Penas, southern Chile, providing primary source of SH samples. A mitochondrial DNA phylogeographic study was undertaken including 111 (98 Penas), new...