Results 71 to 80 of about 4,010 (215)

Evolutionary formation of melatonin and vitamin D in early life forms: insects take centre stage

Biological Reviews, Volume 99, Issue 5, Page 1772-1790, October 2024.
ABSTRACT Melatonin, a product of tryptophan metabolism via serotonin, is a molecule with an indole backbone that is widely produced by bacteria, unicellular eukaryotic organisms, plants, fungi and all animal taxa. Aside from its role in the regulation of circadian rhythms, it has diverse biological actions including regulation of cytoprotective ...
Tae‐Kang Kim, Radomir M. Slominski, Elzbieta Pyza, Konrad Kleszczynski, Robert C. Tuckey, Russel J. Reiter, Michael F. Holick, Andrzej T. Slominski   +7 more
wiley   +1 more source

Oceanographic mechanisms that possibly explain dominance of neritic-tropical zooplankton species assemblages around the Islas Marías Archipelago, Mexico

Latin American Journal of Aquatic Research, 2014
The nearshore zooplankton species assemblage, identified per taxonomic groups (20) and per species for 12 selected groups, was analyzed from samples collected during November 2010 at four volcanic islands of the Islas Marías Archipelago (IMA), located 90-
Jaime Gómez-Gutiérrez, René Funes-Rodríguez, Karmina Arroyo-Ramírez, Carlos Armando Sánchez-Ortíz, Juan Ramón Beltrán-Castro, Sergio Hernández-Trujillo, Ricardo Palomares-García, Octavio Aburto-Oropeza, Exequiel Ezcurra   +8 more
doaj   +1 more source

Insights into the diet and feeding behavior of immature polar cod (Boreogadus saida) from the under‐ice habitat of the central Arctic Ocean

Journal of Fish Biology, Volume 105, Issue 3, Page 907-930, September 2024.
Abstract Polar cod (Boreogadus saida) is an endemic key species of the Arctic Ocean ecosystem. The ecology of this forage fish is well studied in Arctic shelf habitats where a large part of its population lives. However, knowledge about its ecology in the central Arctic Ocean (CAO), including its use of the sea‐ice habitat, is hitherto very limited. To
Fokje L. Schaafsma, Hauke Flores, Carmen L. David, Giulia Castellani, Serdar Sakinan, André Meijboom, Barbara Niehoff, Astrid Cornils, Nicole Hildebrandt, Katrin Schmidt, Pauline Snoeijs‐Leijonmalm, Julia Ehrlich, Carin J. Ashjian, the MOSAiC team ECO   +13 more
wiley   +1 more source

Estudio sobre el régimen alimentario de algunos peces en el mediterráneo occidental [PDF]

, 1979
15 pages, 6 figures, 7 tablesThe occurrence and weight of food items in the stomachs of 1067 Capros aper, 669 Lepidorhombus boscii, 218 Gnatlzophis mystax, 808 Helicolenus dactylopferus dactylopterus, 145 Lepidopus caudatus y 230 Trigla lyra caught in ...
Macpherson, E.
core  

Zooplankton biomass in the ice-covered Weddell Sea, Antarctica [PDF]

, 1991
Zooplankton was sampled by a Rectangular Midwater Trawl (RMT 1 + 8) in Weddell Sea surface waters (0 to 300 m) between 66 and 78°S during austral summer (February – March 1983). Sixty-nine taxa including different developmental stages were considered and
Boysen-Ennen, E., Hagen, W., Hubold, G., Piatkowski, Uwe   +3 more
core   +1 more source

Ecotoxicological Assessment of Microplastics and Cellulose Particles in the Galápagos Islands and Galápagos Penguin Food Web

Environmental Toxicology and Chemistry, Volume 43, Issue 6, Page 1442-1457, June 2024.
Abstract Microplastic pollution threatens some of the world's most iconic locations for marine biodiversity, including the remote Galápagos Islands, Ecuador. Using the Galápagos penguin (Spheniscus mendiculus) as a sentinel species, the present study assessed microplastics and suspected anthropogenic cellulose concentrations in surface seawater and ...
Karly McMullen, Paola Calle, Omar Alvarado‐Cadena, Matthew D. Kowal, Eduardo Espinoza, Gustavo A. Domínguez, Ana Tirapé, Félix Hérnán Vargas, Edward Grant, Brian P. V. Hunt, Evgeny A. Pakhomov, Juan José Alava   +11 more
wiley   +1 more source

Conteúdo estomacal da palombeta-do-caribe Brama caribbea (Mead, 1972), proveniente do conteúdo estomacal de grandes predadores pelágicos do atlí­¢ntico sudoeste equatorial

Boletim do Instituto de Pesca, 2018
A palombeta-do-caribe, Brama caribbea, é um item alimentar comum em grandes predadores no Atlí­¢ntico sudoeste equatorial. Conteúdos estomacais de 185 exemplares de B.
Teodoro Vaske Júnior, Rosângela Paula Lessa, Taciana Martins Barbosa, Mariana Travassos Tolotti, Aurelyanna Christine Bezerra Ribeiro   +4 more
doaj  

Biological and environmental covariates of juvenile sockeye salmon distribution and abundance in the southeastern Bering Sea, 2002–2018

Ecology and Evolution, Volume 14, Issue 4, April 2024.
This manuscript describes changes in the distribution and abundance of juvenile sockeye salmon from Bristol Bay, the world's largest run of sockeye salmon, in relation to spatio‐temporal and temporal changes in prey, competitors, and temperature. Spatio‐temporally varying densities of juvenile sockeye salmon varied with sea temperature, age‐0 pollock ...
Ellen M. Yasumiishi, Curry J. Cunningham, Ed V. Farley Jr., Lisa B. Eisner, Wesley W. Strasburger, John A. Dimond, Paul Irvin   +6 more
wiley   +1 more source

A survey of the marine environment near the city of Monterey ocean outfall [PDF]

, 1973
The California Department of Fish and Game and the State Water Resources Control Board (through Regional Board #3, Central Coast) entered into an agreement whereby Department biologist-divers conducted a subtidal ecological investigation of the marine ...
Hardy, Robert A.
core  

Morphological and taxonomic diversity of mesozooplankton is an important driver of carbon export fluxes in the ocean

Molecular Ecology Resources, Volume 24, Issue 2, February 2024.
Abstract Mesozooplankton is a very diverse group of small animals ranging in size from 0.2 to 20 mm not able to swim against ocean currents. It is a key component of pelagic ecosystems through its roles in the trophic networks and the biological carbon pump.
Margaux Perhirin, Hannah Gossner, Jessica Godfrey, Rodney Johnson, Leocadio Blanco‐Bercial, Sakina‐Dorothée Ayata   +5 more
wiley   +1 more source