Article
Parasitology
Gabriela Munoz, Melissa Rebolledo, Mauricio F. Landaeta
Summary: This study compared the swimming ability and haematological analyses between non-parasitised and parasitised Girella laevifrons fish. The results showed that parasitised fish had lower swimming ability, indicating anemia and immune response. There was a negative correlation between swimming time and leukocyte counts. However, as time passed, the blood parameters of parasitised fish gradually returned to normal levels.
EXPERIMENTAL PARASITOLOGY
(2023)
Article
Plant Sciences
Emily A. Roberts, Matthew E. S. Bracken
Summary: Foundation species like canopy-forming seaweeds provide physical structure that enhances diversity and abundance of associated organisms on rocky shores. Solar radiation, including UV light, can reduce photosynthetic rates and cause DNA damage in algae, but the presence of an algal canopy can protect understory seaweeds by reducing UV exposure. Field experiments showed that removal of the algal canopy led to a significant increase in UV-protective pigment concentrations in seaweeds.
JOURNAL OF PHYCOLOGY
(2021)
Review
Plant Sciences
Javier Martinez-Abaigar, Encarnacion Nunez-Olivera, Francesca Degla
Summary: Bryophyte UV-omics research provides insights into the evolutionary and ecological significance of bryophytes in coping with high UV radiation and other adverse environmental factors, as well as their unique features in terms of research methods, protection mechanisms, environmental interactions, biomonitoring, and applications.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Article
Environmental Sciences
Andrew Turner
Summary: Metals commonly used in boat paint, such as Ba, Cr, Cu, Pb, Sn, and Zn, were found in sediment and algae samples collected near abandoned vessels. The concentrations of these metals in sediment were elevated but highly variable due to contamination by metal-rich boat paint particles. The levels of metals in the algae species U. lactuca were generally higher than in F. vesiculosus, and this was attributed to physical and chemical interactions between the algae and the deposited paint particles. These findings suggest a potential pathway for boat paint metals to enter the food chain.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Marie P. A. Fouet, David Singer, Alexandra Coynel, Swann Heliot, Helene Howa, Julie Lalande, Aurelia Mouret, Magali Schweizer, Guillaume Tcherkez, Frans J. Jorissen
Summary: This study focuses on the distribution of foraminifera on intertidal mudflats in two estuaries along the French Atlantic coast. The study found that the distance to the sea and the percentage of fine sediment are the main factors explaining the distribution of foraminifera. The study also introduces a new index, the Marine Influence Index (MII), which can be used to detect the impact of anthropogenic pollution on natural distribution patterns.
Article
Multidisciplinary Sciences
Victor M. Cubillos, Felipe E. Ramirez, Daniela A. Mardones-Toledo, Nelson Valdivia, Oscar R. Chaparro, Jaime A. Montory, Edgardo A. Cruces
Summary: The bathymetric distribution of the estuarine anemone Anthopleura hermaphroditica determines its capacity to cope with environmental fluctuations. Intertidal individuals exhibit higher tolerance to temperature, salinity, and radiation stressors, resulting in lower levels of oxidative damage and higher antioxidant capacity compared to subtidal individuals. This suggests that intertidal individuals have greater adaptability to environmental variations.
Article
Environmental Sciences
Anatoliy A. Nusinov, Tamara V. Kazachevskaya, Valeriya V. Katyushina
Summary: This paper discusses the importance of understanding and utilizing ultraviolet radiation fluxes from the Sun in modeling the upper atmosphere and ionospheres based on mathematical descriptions of physical processes. It presents aeronomic models of variations in extreme and far ultraviolet radiation, and compares the model calculations with observations to show the accuracy of the models in predicting parameters of the ionosphere and thermosphere.
Article
Chemistry, Analytical
Katharina E. Ebert, Vladimir N. Belov, Tobias Weiss, Thomas Bruning, Heiko Hayen, Holger M. Koch, Daniel Bury
Summary: Homosalate (HMS) is an organic UV filter commonly used in sunscreens and personal care products. This study aimed to provide an analytical method for detecting specific HMS metabolites in human urine, with promising results in both individual testing and population studies.
ANALYTICA CHIMICA ACTA
(2021)
Article
Ecology
Ricarda Blum, Macarena S. Valinas
Summary: This study investigates whether the shelter selection of the amphipod Ampithoe valida is influenced by ultraviolet radiation and whether this selection depends on the amount of photoprotective compounds that the amphipods acquire through the diet. The results show that regardless of the amount of photoprotective compounds acquired, the amphipods prefer to select shelters that shield them from ultraviolet radiation.
Article
Environmental Sciences
Frans J. Jorissen, Marie P. A. Fouet, David Singer, Helene Howa
Summary: This paper proposes a marine influence index (MII) as a quantitative description of the environmental parameters controlling foraminiferal fauna in estuarine intertidal mudflats. The index contains three components related to salinity, as well as other environmental factors. The next step is to compare the MII with faunal data sets to identify correlations and assess anthropogenic disturbance.
Article
Environmental Sciences
Katharina E. Ebert, Peter Griem, Tobias Weiss, Thomas Bruening, Heiko Hayen, Holger M. Koch, Daniel Bury
Summary: This study investigated the metabolism and urinary excretion of Homosalate (HMS) in human volunteers. The results showed differences in metabolism between cis-rich and trans-rich isomer mixtures, highlighting the importance of considering isomer ratios in future studies.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Zhiyong Sun, Rene Huebner, Jian Li, Changzhu Wu
Summary: The authors developed a general approach to designing artificial spores based on Escherichia coli cells with recombinant enzymes. These artificial spores were prepared by coating cells with polydopamine, providing protection from UV radiation, heating, and organic solvents. The protective coating enabled the cells to stabilize aqueous-organic emulsions for efficient interfacial biocatalysis and could be expanded to chemoenzymatic synthesis by combining artificial spores with metal catalysts.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Laura Martin-Pozo, Maria Del Carmen Gomez-Regalado, Samuel Cantarero-Malagon, Alberto Navalon, Alberto Zafra-Gomez
Summary: This study developed a new method to determine concentrations of UV-filters in human nail samples, ensuring accuracy and precision through optimized procedures and multivariate techniques. The results revealed that BP-1 and BP-3 mainly bioaccumulate in human nails.
Article
Multidisciplinary Sciences
Tamma Carleton, Jules Cornetet, Peter Huybers, Kyle C. Meng, Jonathan Proctor
Summary: The study found that UV radiation has a significant effect on the daily growth rates of COVID-19 cases, while temperature and humidity do not show significant cumulative effects. Simulations illustrate how seasonal changes in UV have influenced regional patterns of COVID-19 growth rates, indicating that UV has a smaller effect on disease spread compared to social distancing policies.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Toxicology
Corinna Fischer, Edgar Leibold, Julia Hiller, Thomas Goeen
Summary: This study provides initial information on the human in vivo metabolism of UV-327 by administering it orally to volunteers. The results show that UV-327 is well-absorbed from the intestine but only partially metabolized. Biliary excretion may be the major route of elimination for UV-327 and its hydroxylated metabolites.
ARCHIVES OF TOXICOLOGY
(2023)
Review
Oceanography
Victor Molina-Valdivia, Claudia A. Bustos, Manuel Castillo, Francesca Search, Guido Plaza, Mauricio F. Landaeta
Summary: The study investigated the influence of spring environmental conditions on the growth rates of pearlside Maurolicus australis in western Patagonia, finding that egg size directly affected size-at-hatch while being independent of lipid reserves. Larval growth rates varied latitudinally, with temperature decreases and salinity gradients affecting growth, but daily fluctuations in sea surface temperature did not significantly impact back-calculated detrend growth rates.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Marine & Freshwater Biology
Francisca Zavala-Munoz, Mauricio F. Landaeta, Valentina Bernal-Duran, Claudia A. Bustos, Brian S. Dyer
Summary: The study reports the abundance of early stages of the surf silverside Notocheirus hubbsi in nearshore waters of central Chile, showing a clear lunar cycle pattern with maximum catches during new moon and no catches during full moon in austral spring and summer.
REVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA
(2021)
Article
Multidisciplinary Sciences
Vanessa Robitzch, Victor Molina-Valdivia, Jaiber J. Solano-Iguaran, Mauricio F. Landaeta, Michael L. Berumen
Summary: Research on abundance patterns and lunar phase-related trends of Schindleria fish in the Red Sea indicates that their abundance is affected by seasonal and spatial differences, likely related to habitat and environmental conditions. Significant differences in adult Schindleria abundance in relation to lunar phases were found, with most caught outside the full moon, mainly during the new moon in the Red Sea.
SCIENTIFIC REPORTS
(2021)
Article
Fisheries
Eduardo Anaya-Godinez, Claudia A. Silva-Segundo, Mauricio F. Landaeta, Rene Funes-Rodriguez, Oscar Trujillo-Millan, Anidia Blanco-Jarvio, Carolina Galvan-Tirado, Fausto Valenzuela-Quinonez, Emigdio Marin-Enriquez
Summary: Through geometric morphometric analysis, this study explores the relationship between the shape changes of Pacific chub mackerel larvae and oceanographic variability. The results show that the body shape of the larvae is mainly influenced by sea surface flow and sea temperatures. The larvae can be classified into two main morphotypes, with one morphotype being more hydrodynamic in response to increased sea surface flow and colder sea surface temperatures during spring, and the other morphotype being more robust in response to slower current flow and warmer sea surface temperatures during winter and summer.
FISHERIES OCEANOGRAPHY
(2022)
Article
Fisheries
Erwan Delrieu-Trottin, Hans Hartmann-Salvo, Pablo Saenz-Agudelo, Mauricio F. Landaeta, Alejandro Perez-Matus
Summary: The blenniids of the genus Scartichthys are common fishes of Central and South American Pacific coastal reefs. However, identifying species within the genus is challenging due to elusive taxonomic characters and varying color patterns in the field. This study combines coloration, morphological, and molecular data to revise the taxonomy of Scartichthys and identifies three valid species. The results also show the divergence times between the species, providing insights into the evolution of the genus.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Fisheries
Mauricio F. Landaeta, Yanara Figueroa-Gonzalez, Gonzalo Moyano, Javier Vera-Duarte, Alejandro Perez-Matus, Guido Plaza
Summary: Settlement of marine fish involves shape and ecological changes during the transition from pelagic larvae to benthic juveniles. In this study of the wrasse Pseudolabrus gayi from the south-eastern Pacific, settlers exhibited variation in mouth orientation and body shape across sites, with differences in condition and growth pre and post-settlement. The findings highlight the dynamic nature of settlement-transition period and asynchronous changes in body shape and early life-history traits.
MARINE AND FRESHWATER RESEARCH
(2021)
Article
Marine & Freshwater Biology
Bernardita Campos, Mauricio F. Landaeta
Summary: This research estimated the abundance of main groups of planktonic mollusks along a longitudinal gradient between mainland Chile and the Easter Island ecoregion in the Southeast Pacific Ocean. Results showed spatial variation of planktonic mollusks in different water zones, with bivalve larvae increasing in warmer, salty and vertically mixed waters.
REVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA
(2021)
Article
Zoology
Fernanda S. Orrego, Mathias Hune, Hugo A. Benitez, Mauricio F. Landaeta
Summary: Phenotypic variation in marine species is influenced by both genotype and environmental constraints. This study focused on the morphology of the eelpout Austrolycus depressiceps and found variations in the shape of the head and cephalic sensory canals, possibly caused by allometric effects. Spatial differences and modularity in the development of the head shape and sensory canals were also observed.
INTEGRATIVE ZOOLOGY
(2023)
Article
Fisheries
Cristian Azocar, Francisca Zavala-Munoz, Mauricio F. Landaeta, Milton Aviles, Miguel Araya
Summary: This study provides a first-time description of the parental care and embryonic and larval development of the labrisomid blenny. Through underwater recordings and laboratory observations, it reveals some characteristics of the reproduction and larval growth of this fish species.
JOURNAL OF APPLIED ICHTHYOLOGY
(2022)
Article
Parasitology
Gabriela Munoz, Melissa Rebolledo, Mauricio F. Landaeta
Summary: This study compared the swimming ability and haematological analyses between non-parasitised and parasitised Girella laevifrons fish. The results showed that parasitised fish had lower swimming ability, indicating anemia and immune response. There was a negative correlation between swimming time and leukocyte counts. However, as time passed, the blood parameters of parasitised fish gradually returned to normal levels.
EXPERIMENTAL PARASITOLOGY
(2023)
Article
Ecology
Mathias Hune, Alex Quintullanca, Cristian Aldea, Mauricio F. Landaeta
Summary: This study provides the first description of the morphology, condition, and diet of the rockcod Patagonotothen tessellata from Chilean Central Patagonia. Sexual shape dimorphism was found in snout extension, mouth size, and pelvic fin insertion. Male rockcod showed preferences for Patagonotothen spp., unidentified crustaceans, and polychaetes, while females primarily consumed unidentified fish and crustaceans. Significant differences in diet composition were observed between sexes, but not among size groups. There was a weak but significant relationship between diet and morphology.
ENVIRONMENTAL BIOLOGY OF FISHES
(2023)
Article
Fisheries
Mauricio F. Landaeta, Lissette D. Paredes, Manuel I. Castillo, M. Teresa Gonzalez
Summary: This study analyzed the distributional patterns and diversity of ichthyoplankton in the southern Chilean fjords. Spatial variations in the composition and abundance of ichthyoplankton were observed, while temporal variations were not significant. Environmental conditions, such as salinity and water temperature, play a crucial role in shaping the larval fish structure in this region. The study highlights the importance of conservation and monitoring of ichthyoplankton communities in Chilean Patagonia.
FISHERIES OCEANOGRAPHY
(2023)
Article
Multidisciplinary Sciences
Mauricio F. Landaeta, Carola Hernandez-Santoro, Francesca Search, Manuel Castillo, Claudio Bernal, Sergio A. Navarrete, Evie A. Wieters, Ricardo Beldade, Ana Navarro Campoi, Alejandro Perez-Matus
Summary: This study examines the discarded demersal community fauna in the artisanal and industrial crustacean fisheries along the southern Humboldt Current System from 2014 to 2019. It analyzes spatio-temporal patterns, species composition, and assemblages, and investigates the factors influencing biodiversity. The results show variations in species composition, assemblage segregation by depth and geographic zone, and interannual variations of biodiversity. Surface sea temperature, chlorophyll-a, or wind stress were not correlated with biodiversity.
Article
Marine & Freshwater Biology
Frances Paez-Collao, Yanara Figueroa-Gonzalez, Guido Plaza, Hugo A. Benitez, Mauricio F. Landaeta
Summary: Important morphological and ecological modifications occur during the transition between pelagic and demersal phases in marine fish. This study focused on the shape changes of the cryptobenthic fish Helcogrammoides chilensis during the shift from pelagic larvae to recently settled individuals. The results showed that larvae experienced faster growth rates and exhibited distinct shape changes compared to recently settled individuals, suggesting adaptation to their new environment.
Article
Marine & Freshwater Biology
Mauricio F. Landaeta, Anakaren Gomez, Jorge E. Contreras, Yanara Figueroa-Gonzalez, Elias Pinilla, Pablo Reche, Manuel I. Castillo, Guido Plaza
Summary: Using a combination of methods, this study investigated the potential carryover effect between environmental conditions, larval growth, and the morphology of rockfish settlers. Two sympatric morphotypes of young-of-the-year rockfish were found, which showed differences in growth trajectories. The results suggest ecological carryover effects of the growth history of larval stages on the phenotype of rockfish settlers.