Results 61 to 70 of about 7,129 (220)

Past research and future directions in understanding how birds use their sense of smell

Ibis, Volume 167, Issue 4, Page 853-881, October 2025.
Our understanding of the functional importance of olfaction to birds has improved over the past 60 years, largely as the result of experimental studies testing how birds use their sense of smell in different contexts. As it is impossible to measure directly which odours birds can detect, we rely on measuring behavioural responses to scent cues or ...
Darcy Creece, Rafael Freire, Melanie Massaro   +2 more
wiley   +1 more source

Improving the Accuracy of Krill Target Strength Using a Shape Catalog

Frontiers in Marine Science, 2021
Antarctic krill are subject to precautionary catch limits, based on biomass estimates, to ensure human activities do not adversely impact their important ecological role.
Fiona Bairstow, Sven Gastauer, Sven Gastauer, Luke Finley, Tom Edwards, C. Tom A. Brown, So Kawaguchi, Martin J. Cox   +7 more
doaj   +1 more source

Purification and characterization of aminopeptidase from Euphausia superba. [PDF]

Agricultural and Biological Chemistry, 1984
Krill aminopeptidase was purified about, 1,100-fold from an extract of Euphausia superba with DEAE-cellulose column chromatography, Toyopearl HW55, and hydroxyapatite column chromatography. The final preparation was electrophoretically homogeneous.
Koichi Kimoto, Kazuo Murakami
openaire   +2 more sources

Pellet quality of krill meal and pea protein containing diets and their sinking velocity at different water temperature and salinity

Journal of the World Aquaculture Society, Volume 56, Issue 5, October 2025.
Abstract The present study investigated the effects of replacing low‐temperature fishmeal (LT FM) with graded levels of partly deshelled Antarctic krill (Euphausia superba) meal and pea protein concentrate (PDKM + PPC), PDKM alone, or whole krill meal with shells (WKM) as primary protein sources on feed pellet physical quality and sinking velocity (Sv)
Teshome Begashaw, Trond Storebakken, Mette Sørensen   +2 more
wiley   +1 more source

An Update on the Occurrence of Humpback Whale ( Megaptera novaeangliae ) Super‐Groups on the West Coast of South Africa

Marine Mammal Science, Volume 41, Issue 4, October 2025.
ABSTRACT Humpback whale ( Megaptera novaeangliae ) super‐groups, comprising 20+, tightly aggregated, feeding individuals, form during the austral summer in the southern Benguela ecosystem off the west coast of South Africa. This phenomenon, observed since 2011, is thought to be linked to increased productivity from positive chlorophyll‐a anomalies ...
Elisa Seyboth, Ken Findlay, Alex Vogel, Daniela Abras, David Hurwitz, Els Vermeulen, Jean Tresfon, Tess Gridley, Simon Elwen   +8 more
wiley   +1 more source

The complete mitochondrial genome of the ice krill Euphausia crystallorophias Holt & Tattersall, 1906 (Euphausiacea, Euphausiidae), from the Ross Sea, Antarctica

Mitochondrial DNA. Part B. Resources
The mitogenome of Euphausia crystallorophias collected from the Ross Sea Region Marine Protected Area (RSR MPA) is described for the first time. The assembled mitogenome was 17,291 bp in length and consisted of two ribosomal RNAs (rRNAs), 22 transfer ...
Sung Hoon Kim, Taeho Kim, Wuju Son, Jeong-Hoon Kim, Hyoung Sul La   +4 more
doaj   +1 more source

Drone‐Based Photogrammetry Provides Estimates of the Energetic Cost of Migration for Humpback Whales Between Antarctica and Colombia

Marine Mammal Science, Volume 41, Issue 4, October 2025.
ABSTRACT Monitoring the body condition of animals offers insights into their energetic needs, prey consumption, and vulnerability to environmental pressures. Southern hemisphere humpback whales ( Megaptera novaeangliae ) depend on Antarctic krill for their annual energy requirements.
Alexandre Bernier‐Graveline, Susan Bengtson Nash, K. C. Bierlich, Ari Friedlaender, David W. Johnston, Juliana Castrillon, Natalia Botero‐Acosta, Susana Caballero, Fredrik Christiansen   +8 more
wiley   +1 more source

Effect of body size, temperature and starvation on oxygen consumption of antarctic krill Euphausia superba

Brazilian Journal of Oceanography, 1997
Routine oxygen consumption of krill was investigated as a general measure of its metabolism and assesses the effects of body size, temperature and starvation on the metabolism. No significant difference in whole animal consllmption was detected after 1,3,
Phan Van Ngan, Vicente Gomes, Paulo S. M. Carvalho, Maria José de A. C. R. Passos   +3 more
doaj   +1 more source

Macroplankton communities in Antarctic surface waters: spatial changes related to hydrography [PDF]

, 1989
During the Anglo-German Antarctic expedition in February 1982 macroplankton was collected in the waters off the Antarctic Peninsula. Macroplankton compos~tions at 36 stations were compared and degrees of similarity submitted to hierarchical cluster ...
Piatkowski, Uwe
core   +1 more source

Membrane Lipid Remodeling Strategies Regulate Fluidity for Acute Temperature Adaptation in Oysters

Evolutionary Applications, Volume 18, Issue 9, September 2025.
ABSTRACT Extreme climatic temperature stress induced by global warming poses a severe threat to the survival of marine invertebrates. The plasma membrane functions as a natural barrier and serves as the first responder to ambient temperature through dynamic modulation of its fluidity.
Mingyang Du, Jincheng Chen, Chaogang Wang, Zhuxiang Jiang, Min Wang, Meiqian Pang, Tian Bu, Rihao Cong, Wei Wang, Guofan Zhang, Li Li   +10 more
wiley   +1 more source