Results 41 to 50 of about 6,447 (249)

Variation in Antarctic Petrel Foraging Ecology: Not All Individuals Specialize on Krill

Frontiers in Marine Science, 2022
Individual heterogeneity in foraging behaviour determines how individuals and populations respond to changes in the availability and distribution of resources.
S. Descamps, S. M. Harris, J. Fluhr, P. Bustamante, P. Bustamante, Y. Cherel, A. M. Trevail, M. Brault-Favrou, S. C. Patrick   +8 more
doaj   +1 more source

Flexibility in Antarctic krill Euphausia superba decouples diet and recruitment from overwinter sea-ice conditions in the northern Antarctic Peninsula

, 2020
Winter sea-ice conditions are considered important for Antarctic krill Euphausia superba survival and recruitment, yet few broad-scale longitudinal studies have examined the underlying relationships between winter conditions and krill recruitment.
J. Walsh, C. Reiss, G. Watters
semanticscholar   +1 more source

Sticholonche zanclea (Protozoa, Actinopoda) in fecal pellets of copepods and Euphausia sp. in Brazilian coastal waters

Brazilian Journal of Biology
Fecal pellets produced by mesozooplanktonic copepods (Centropages velificatus and Paracalanus parvus) and macrozooplanktonic Euphausiacea (Euphausia sp.) were examined using scanning electron microscopy.
E. M. Eskinazi-Sant'Anna
doaj   +1 more source

Integral values of biomass and stock of zooplankton in the epipelagic layer of the area 71 in the North Pacific, including the Bering and Okhotsk Seas, and patterns of distribution for mass species

Известия ТИНРО, 2015
The Okhotsk and Bering Seas and the subarctic zone of the North Pacific are surveyed well by the expeditions conducted by Pacific Fish. Res. Center (TINRO) in the last three decades (115 surveys in 1984-2013), with sampling of zooplankton for monitoring ...
Anatoly F. Volkov
doaj   +1 more source

Quantitative distribution and feeding of euphausiids in the Okhotsk Sea

Известия ТИНРО, 2016
Euphausia in the Okhotsk Sea is one of the most abundant groups of zooplankton, its portion in the total zooplankton biomass in the epipelagic layer is 25.4-37.4 %, depending on season, the total stock is 83.2 · 106 t in spring, 66.3 · 106 t in summer ...
Konstantin M. Gorbatenko
doaj   +1 more source

Genetic differentiation in the Antarctic coastal krill Euphausia crystallorophias [PDF]

Heredity, 2002
The population genetics of the Antarctic neritic krill species Euphausia crystallorophias was examined by nucleotide sequence variation in its mitochondrial DNA. A 616 base pair region of the cytochrome c oxidase subunit I (COI) gene was screened for mutations by single-strand conformational polymorphism (SSCP) combined with restriction digestion.
Simon N, Jarman, N G, Elliott, S, Nicol, A, McMinn   +3 more
openaire   +2 more sources

Nanomaterials' Multigenerational Effects by Single and Joint Exposure in Non‐mammalian Models

Environmental Toxicology, EarlyView.
ABSTRACT Nanotoxicology has mainly focused on single‐generation studies, leaving multigenerational toxicity underexplored. Having animal welfare recently gained importance, we aimed to provide the state‐of‐the‐art of knowledge about multigenerational effects in non‐mammalian models in the case of nanomaterials (NM) single and joint exposure to other ...
Andy Joel Taipe Huisa, Analía Ale, Azael Francisco Silva Neto, Lorena De Mendonça Lucena, Marcelo Estrella Josende, Milena Ferreira de Lima, Rhayanny Kethylly Pereira Santos, Martín Federico Desimone, Priscila Gubert, José María Monserrat   +9 more
wiley   +1 more source

Feeding Ecology of Three Euphausiid Species in the North Pacific Ocean Inferred From 18S V9 Metabarcoding and Stable Isotope Analysis

Frontiers in Marine Science, 2021
Euphausiids are abundant micronekton and important links between higher and lower trophic levels in marine ecosystems; however, their detailed diets cannot be fully understood by conventional microscopy, especially in subtropical areas.
Fanyu Zhou, Junya Hirai, Koji Hamasaki, Sachiko Horii, Atsushi Tsuda   +4 more
doaj   +1 more source

Linking oceanic variability, euphausiid hotspot persistence, and marine predator distribution along Canada's west coast

Ecological Applications, Volume 36, Issue 1, January 2026.
Abstract Understanding patterns of habitat use across trophic levels and the physical drivers of multispecies aggregations is essential to inform ecosystem‐based management. To achieve this, we quantified the spatial distribution and co‐occurrence of hotspots (defined using the Getis‐Ord statistic) for euphausiids and nine of their commercially ...
Rhian Evans, Stéphane Gauthier, Clifford L. K. Robinson, Philina A. English, Chelsea Stanley, Brianna M. Wright, Linda Nichol   +6 more
wiley   +1 more source

A study on the multi-frequency acoustic target strength of krill using a stochastic distorted-wave born approximation (SDWBA) model

Fisheries and Aquatic Sciences
We examined the dB difference in target strength at multiple frequencies (ΔTS) for the identification of Antarctic krill (Euphausia superba) and ice krill (Euphausia crystallorophias) using a stochastic distorted-wave Born approximation model.
Wuju Son, Wooseok Oh, Hyoung Sul La, Kyounghoon Lee   +3 more
doaj   +1 more source