A5015453997- Ichthyology and Marine Biology
- Fish Biology and Ecology Studies
- Marine and fisheries research
- Fish Ecology and Management Studies
- Morphological variations and asymmetry
- Coral and Marine Ecosystems Studies
- Genetic diversity and population structure
- Marine animal studies overview
- Genomics and Phylogenetic Studies
- Isotope Analysis in Ecology
- Paleontology and Evolutionary Biology
- Marine Bivalve and Aquaculture Studies
- Parasite Biology and Host Interactions
- Identification and Quantification in Food
Institute of Ecology and Biodiversity
2022-2024
University of Chile
2022-2024
University of Valparaíso
2016-2023
Valparaiso University
2017-2021
Connectivity is a fundamental process of population dynamics in marine ecosystems. In the last decade, with emergence new methods, combining different approaches to understand patterns connectivity among populations and their regulation has become increasingly feasible. The Western Antarctic Peninsula (WAP) characterized by complex oceanographic dynamics, where local conditions could act as barriers connectivity. Here, notothenioid fish Harpagifer antarcticus, demersal species life cycle...
The majority of rocky reef fishes have complex life cycles, involving transition from a pelagic to benthic environment. This means that as they grow, their morphology, behaviour and feeding habits must change. Therefore, shape changes occurring during early development these will be related diet changes. clingfish Sicyases sanguineus was selected for this study, because it displays noticeable variation in larvae juvenile stage, is expected composition change well. pattern studied using...
Larval development and shape ontogeny of the kelpfish Myxodes viridis (Clinidae) are described for first time. A total 214 individuals ranging between 3.51 23.09 mm standard length collected off central Chile were assessed employing classic geometric morphometrics, illustration with camera lucida a double-staining technique cartilaginous bone structure observation. Based on characteristics such as yolk sac presence fin formation, six stages larval differentiated: sac, preflexion, flexion,...
Molecular-based analysis has become a fundamental tool to understand the role of Quaternary glacial episodes. In Magellan Province in southern South America, ice covering during last maximum (20 ka) radically altered landscape/seascape, speciation rates and distribution species. For notothenioid fishes genus Harpagifer, area are described two nominal Nevertheless, this recently colonized America from Antarctica, providing short time for processes. Combining DNA sequences...
Larval body shape changes and developmental timing were examined in two clingfish species from the south-east Pacific Ocean, Gobiesox marmoratus Sicyases sanguineus. Ontogenetic allometry showed no interspecific variation <7 mm standard length (LS ) larvae of both occupied similar morphospace, but larger G. increased depth while S. sanguineus developed a flattened head maintained hydrodynamic body. Estimated suggests that larval faster than prior to settlement.
The effects of ectoparasites on larvae the clingfish Gobiesox marmoratus were evaluated at dietary and morphometric levels. collected by nearshore plankton samplings during October, November December 2013 off El Quisco Bay, central Chile. standardized abundance total those ectoparasitized (PL) was positively related high parasite prevalence found throughout sampling period (up to 38%). Geometric morphometrics analyses indicate main changes in shape through early ontogeny subtle but...
Antarctic notothenioid fishes show wide adaptive morphological radiation, linked to habitat preferences and food composition. However, direct comparisons of phenotypic variability feeding habits are still lacking, particularly in stages inhabiting nearshore areas. To assess these relationships, we collected juveniles adults the most common benthic species shallow waters off South Shetland Islands within a similar size range, plunderfish Harpagifer antarcticus, black rockcod Notothenia...
The abundance of early stages the surf silverside Notocheirus hubbsi in nearshore waters central Chile, collected samplings set up to assess lunar cycle during austral spring and summer is reported. A total 19 specimens were with light traps, 16 larvae (7.89-16.20 mm SL) 3 juveniles (30.70-34.60 summer. Capture per unit effort (CPUE) varied from 0.33 2.00 ind. trap-1 night-1 entire study period (September 2015-February 2016, September 2016-February 2017). N. catches recorded maximum new moon...