A5002038605- Marine animal studies overview
- Cephalopods and Marine Biology
- Marine and fisheries research
- Ichthyology and Marine Biology
- Turtle Biology and Conservation
- Isotope Analysis in Ecology
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Arctic and Antarctic ice dynamics
- Avian ecology and behavior
- Marine and coastal plant biology
- Animal Vocal Communication and Behavior
- Mercury impact and mitigation studies
- Environmental and Cultural Studies in Latin America and Beyond
- Bat Biology and Ecology Studies
- Coastal and Marine Management
- Genomics and Phylogenetic Studies
- Identification and Quantification in Food
- Genetic diversity and population structure
- Underwater Acoustics Research
- Ocean Acidification Effects and Responses
- Underwater Vehicles and Communication Systems
- Species Distribution and Climate Change
- Physiological and biochemical adaptations
University of Valparaíso
2016-2025
Millenium Nucleus for Planet Formation
2018-2024
University of Concepción
2006-2024
Valparaiso University
2005-2019
Clínica Alemana
2014-2018
Centro Científico Tecnológico Patagónico
2018
Comenius University Bratislava
2017
Johannes Kepler University of Linz
2017
Universidad Católica del Norte
2017
University of Chile
2004-2007
Motivated by the need to estimate abundance of marine mammal populations inform conservation assessments, especially relating fishery bycatch, this paper provides background on estimation and reviews various methods available for pinnipeds, cetaceans sirenians. We first give an “entry-level” introduction estimation, including fundamental concepts importance recognizing sources bias obtaining a measure precision. Each primary mammals is then described, data collection analysis, common...
AEI Aquaculture Environment Interactions Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 4:273-283 (2013) - DOI: https://doi.org/10.3354/aei00089 REVIEW Escaped farmed salmon and trout in Chile: incidence, impacts, need for an ecosystem view Maritza Sepúlveda1,*, Ivan Arismendi2, Doris Soto3, Fernando Jara4, Francisca Farias5 1Centro de Investigación y Gestión los Recursos Naturales...
Eastern Boundary Upwelling Systems (EBUS) are regions where wind-driven coastal upwelling brings deep cold, nutrient-rich water to the surface and may be characterized by a ‘footprint’ of sea temperature (SST) cooler than their surroundings. Previous studies have shown that EBUS temperatures responding differently global ocean warming, warming slowly or not at all. However, spatial dynamics footprints yet investigated. In this paper, we use 20 years high-resolution SST data derived from...
Abstract The phylogeny and systematics of fur seals sea lions (Otariidae) have long been studied with diverse data types, including an increasing amount molecular data. However, only a few phylogenetic relationships reached acceptance because strong gene-tree species tree discordance. Divergence times estimates in the group also vary largely between studies. These uncertainties impeded understanding biogeographical history group, such as when how trans-equatorial dispersal subsequent...
Fisheries bycatch is the greatest current source of human-caused deaths marine mammals worldwide, with severe impacts on health and viability many populations. Recent regulations enacted in United States under Fish Product Import Provisions its Marine Mammal Protection Act require nations fisheries exporting fish products to (hereafter, “export fisheries”) have or establish mammal protection standards that are comparable effectiveness for commercial fisheries. In cases, this will estimating...
Hybridization is widespread and constitutes an important source of genetic variability evolution. In animals, its role in generating novel independent lineages (hybrid speciation) has been strongly debated, with only a few cases supported by genomic data. The South American fur seal (SAfs) Arctocephalus australis marine apex predator Pacific Atlantic waters, disjunct set populations Peru Northern Chile [Peruvian (Pfs)] controversial taxonomic status. We demonstrate, using complete genome...
Abstract This study investigates the interactions between South American sea lions ( Otaria byronia ) and trawling fisheries in central‐southern Chile, using underwater video technology. From August 2017 to 2018, a total of 32 filming sessions were conducted across trawl targeting Patagonian grenadier Macruronus magellanicus ), nylon shrimp Heterocarpus reedi Chilean hake Merluccius gayi ). The records revealed 15 lions, including adult subadult males females. These individuals observed...
By means of surveys in 48 salmon farms Chile, and the analysis fish mortality 23, results showed that attacks by South American sea lion, Otaria flavescens, were periodical at a daily seasonal scale, because their natural nocturnal feeding behaviour, more frequent night fall–winter seasons. The varied markedly between studied. No relation was found intensity attacks, distance to nearest colony lions population colony. Differences could be different protective devices used, namely...
Bycatch in marine fisheries is the leading source of human-caused mortality for mammals, has contributed to substantial declines many mammal populations and species, extinction at least one. Schemes evaluating bycatch largely rely on estimates abundance bycatch, which are needed calculating biological reference points determining conservation status. However, obtaining these resource intensive takes careful long-term planning. The need assessments expected increase worldwide due recently...
Abstract Here, we review extensive information to estimate environmental risks from escaped non‐native salmonids based on the assessments of hazard , sensitivity and exposure discrete water bodies in Chile. In 2020, country harvested about 1 million tons net pens located along 1500 km highly biodiverse coastline. We base our analysis existing scientific authors' expert opinions including an assessment knowledge gaps uncertainties. Risks impacts differed by salmon species, being lowest for...
Abstract The main issue affecting the conservation of most pinniped species has been identified as interactions with fisheries and aquaculture. In South American waters in particular, this problem not well evaluated. Consequently, there is an urgent need for research measures to address problem, particularly concern. study, we reviewed published unpublished observations from last 25 years on operational biological between pinnipeds salmonid aquaculture activities waters, management...
Abstract Vilata, J., Oliva, D., and Sepúlveda, M. 2010. The predation of farmed salmon by South American sea lions (Otaria flavescens) in southern Chile. – ICES Journal Marine Science, 67: 475–482. lion Otaria flavescens is abundant off Because Chilean farming has experienced an explosive growth the past two decades, interactions between O. this industry have increased. Fieldwork, including situ behavioural observations, was carried out at three farms Chile from May to July 2008. aim analyse...
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...
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...
Apex marine predators alter their foraging behavior in response to spatial and/or seasonal changes natural prey distribution and abundance. However, few studies have identified the impacts of aquaculture that represents a spatially temporally predictable abundant resource on behavior. Using satellite telemetry stable isotope analysis we examined degree overlap between South American sea lion (SASL) salmon farms, quantify amount native versus farmed salmonids SASL diets. We instrumented eight...