Article
Multidisciplinary Sciences
Elena Schall, Divna Djokic, Erin C. Ross-Marsh, Javier Ona, Judith Denkinger, Julio Ernesto Baumgarten, Linilson Rodrigues Padovese, Marcos R. Rossi-Santos, Maria Isabel Carvalho Goncalves, Renata Sousa-Lima, Rodrigo Hucke-Gaete, Simon Elwen, Susannah Buchan, Tess Gridley, Ilse Van Opzeeland
Summary: The Atlantic sector of the Southern Ocean attracts migratory baleen whale species due to its high density of Antarctic krill. Humpback whales sing extensively while feeding in this area, and comparative song analyses suggest that individuals from at least three breeding populations migrate to shared feeding grounds in the Southern Ocean. The area is important for cultural and genetic exchange between populations.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
S. Descamps, S. M. Harris, J. Fluhr, P. Bustamante, Y. Cherel, A. M. Trevail, M. Brault-Favrou, S. C. Patrick
Summary: Individual heterogeneity in foraging behavior plays a crucial role in how individuals and populations respond to changes in resource availability. This study found that Antarctic petrels exhibit consistent individual differences in their diet and foraging movements at sea. Some individuals specialize in fish as prey, indicating potential resilience to changes in the marine environment.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Fiona Bairstow, Sven Gastauer, Luke Finley, Tom Edwards, C. Tom A. Brown, So Kawaguchi, Martin J. Cox
Summary: This study examines the methods for estimating the biomass of Antarctic krill, proposing the use of shape catalogs to improve target strength response.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Chemistry, Medicinal
Shuang-Yi Zhang, Guo-Xu Zhao, Shi-Kun Suo, Yu-Mei Wang, Chang-Feng Chi, Bin Wang
Summary: Fifteen antioxidant peptides were purified from Antarctic krill proteins after hydrolysis, with SLPY, QYPPMQY, and EYEA showing the highest scavenging activities and stability under various conditions.
Article
Biodiversity Conservation
Devi Veytia, Sophie Bestley, So Kawaguchi, Klaus M. Meiners, Eugene J. Murphy, Alexander D. Fraser, Kazuya Kusahara, Noriaki Kimura, Stuart Corney
Summary: Climate change affects sea ice environments, which in turn impact habitat and recruitment of polar species like Antarctic krill. Identifying sea ice characteristics as indicators of habitat quality is crucial for monitoring climate change impacts and understanding how krill populations respond to changing sea ice. The research highlights the complexity of larval dependence on sea ice and the importance of studying regional variations in sea ice influence on krill populations.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Kim S. Bernard, Kirsten B. Steinke, Julia M. Fontana
Summary: This study aims to understand the physiology and condition of Antarctic krill, particularly juvenile krill, during winter. The researchers found that juvenile krill maintain high respiration rates and respond positively to increased food concentrations during winter. They rely on lipid stores accumulated in summer and autumn to survive the winter. The health of juvenile krill during winter depends on their ability to accumulate lipid reserves and find sufficient food, making changes in food availability a potential issue for them.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Agriculture, Multidisciplinary
Junxin Lin, Yuying Zhang, Yiwei Li, Peizi Sun, Xiang Ren, Dongmei Li
Summary: The study demonstrated that pre-soaking with L-lysine solution improved the texture characteristics and reduced the cooking loss of Antarctic krill after heat treatment. Lysine effectively protected the structural integrity of Antarctic krill protein, enhancing its thermal stability during thermal processing.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Polymer Science
Thomas Hahn, Jeannine Egger, Simon Krake, Michael Dyballa, Linus Stegbauer, Nils von Seggern, Inge Bruheim, Susanne Zibek
Summary: This study optimized the production process of chitosan from Antarctic krill exocuticles and conducted a comprehensive analysis of the entire process, by-products, and products. The results indicate that high-quality chitosan can be obtained using specific process parameters.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Food Science & Technology
Peizi Sun, Junxin Lin, Xiang Ren, Biao Zhang, Jiaxin Liu, Yanfen Zhao, Dongmei Li
Summary: This study aimed to investigate the mechanisms underlying changes in Antarctic krill meat characteristics and physicochemical properties treated at different temperatures and holding times. The findings showed that higher temperatures and longer holding times significantly increased the hardness and cooking loss of Antarctic krill meat. The degradation of protein and transformation of structural motifs were observed, leading to the deterioration of Antarctic krill meat.
FOOD AND BIOPROCESS TECHNOLOGY
(2022)
Article
Food Science & Technology
Peizi Sun, Xuedi Zhang, Xiang Ren, Zhiqi Cao, Yanfen Zhao, Hao Man, Dongmei Li
Summary: The effect of basic amino acid (L-arginine, L-lysine, and L-histidine) pretreatment on the quality of canned Antarctic krill was evaluated in this study. It was found that L-lysine pretreatment significantly improved the texture, water-holding capacity, color, and reduced oxidative damage of krill meat. In addition, sensory evaluation indicated that L-lysine-treated canned Antarctic krill had a better flavor and texture compared to other canned products. Overall, L-lysine shows potential as a regulatory strategy for enhancing the quality of canned Antarctic krill.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Food Science & Technology
Yue-Zhen Wang, Yu-Qin Zhao, Yu-Mei Wang, Wen-Hao Zhao, Peng Wang, Chang-Feng Chi, Bin Wang
Summary: This study aimed to purify and identify antioxidant peptides from Antarctic Krill hydrolysate and investigate their protective effects on H2O2-induced oxidative stress in Chang liver cells. Results showed that LKPGN and LQP exhibited high scavenging activities and cytoprotective effects by increasing antioxidant enzyme levels and mitochondrial membrane potential. These peptides could serve as promising candidates for health-promoting products.
JOURNAL OF FUNCTIONAL FOODS
(2021)
Article
Food Science & Technology
Xiang Ren, Xinyu Zhang, Peizi Sun, Junxin Lin, Yuying Zhang, Dongmei Li
Summary: This study investigated the effects of L-arginine soaking on the quality modification of heat-treated Antarctic krill. The results showed that L-arginine can improve the water-holding capacity of krill and promote the transition of myofibrillar proteins from disordered to ordered structures, ultimately improving the quality of heat-treated krill.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Food Science & Technology
Junxin Lin, Peizi Sun, Yanfen Zhao, Xiaoping Du, Xiang Ren, Hao Man, Dongmei Li
Summary: L-Lys immersion pretreatment can effectively improve the quality of heat-treated Antarctic krill meat by reducing hydrophobicity and particle size, and increasing solubility. Furthermore, L-Lys intervention inhibits the aggregation behavior of myofibrillar protein and alters the structure and properties of protein.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Helena Herr, Sacha Viquerat, Fredi Devas, Abigail Lees, Lucy Wells, Bertie Gregory, Ted Giffords, Dan Beecham, Bettina Meyer
Summary: This article reports on the recovery of fin whales in the Southern Hemisphere and their return to previously frequented feeding grounds, which plays a crucial role in atmospheric carbon regulation.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Ilenia Urso, Alberto Biscontin, Davide Corso, Cristiano Bertolucci, Chiara Romualdi, Cristiano De Pitta, Bettina Meyer, Gabriele Sales
Summary: The krill species Euphausia superba plays a critical role in the Antarctic ecosystem, but climate changes have already affected its distribution and reproductive dynamics. In this study, we identified genes involved in the krill moulting cycle, reproductive process, and sexual maturation, and discovered previously unknown differentially expressed genes related to cuticle development and energy storage. We also expanded our knowledge of the krill opsin repertoire by finding new opsin sequences. Furthermore, we created the KrillDB(2) database, which provides comprehensive information on krill genes, expression profiles, and differential expression.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
James B. Bell, Vladimir Laptikhovsky, David K. A. Barnes, Ramon Benedet, Amelia E. Bridges, James Glass, Warren Glass, Rodney Green, Simon A. Morley, Simon Robertson, Georgia R. Robson, Harry Stanton, Freja Azzopardi, Clive N. Trueman, Oliver Yates, Martin A. Collins
Summary: This study presents the first life history data of Bluenose warehou in the south Atlantic, focusing on the EEZ of the UK Overseas Territory of Tristan da Cunha. It has contributed to the development of the first stock assessment for this species in the Atlantic and improved conservation measures for vulnerable species in the area.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Serena R. Wright, David Righton, Joachim Naulaerts, Robert J. Schallert, Victoria Bendall, Christopher Griffiths, Michael Castleton, Daniel David-Gutierrez, Daniel Madigan, Annalea Beard, Elizabeth Clingham, Leeann Henry, Vladimir Laptikhovsky, Douglas Beare, Waylon Thomas, Barbara A. Block, Martin A. Collins
Summary: Yellowfin tuna, a widely distributed migratory species, have been tagged in the South Atlantic Ocean to study their movement patterns. Most yellowfin tuna remained within 70 km of their release location, while some displayed large-scale movements, indicating connections between different regions.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2021)
Article
Fisheries
Philip R. Hollyman, Simeon L. Hill, Vladimir V. Laptikhovsky, Mark Belchier, Susan Gregory, Alice Clement, Martin A. Collins, Olav Rune Godo
Summary: Exploitation has caused overexploitation in South Georgia since its discovery in 1775, leading to significant declines in living resources like the marbled rockcod. However, recent data has shown a sustained increase in the marbled rockcod population since the prohibition of targeted fishing in 1985. The dynamic ecosystem and trophic relationships play a crucial role in influencing the recovery of the species.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Fisheries
P. N. Trathan, S. Fielding, P. R. Hollyman, E. J. Murphy, V Warwick-Evans, M. A. Collins
Summary: The ecosystem approach to fisheries management aims to sustain healthy marine ecosystems and their associated fisheries. Implementation in the Antarctic has provided valuable insights, but additional monitoring is needed. Variability in the krill fishery at South Georgia is linked to sea surface temperature, with ecological structure influencing results.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Environmental Sciences
Serena R. Wright, David Righton, Joachim Naulaerts, Robert J. Schallert, Chris A. Griffiths, Taylor Chapple, Daniel Madigan, Vladimir Laptikhovsky, Victoria Bendall, Rhys Hobbs, Doug Beare, Elizabeth Clingham, Barbara Block, Martin A. Collins
Summary: The study investigated the behavior of yellowfin tuna using satellite tags in the South Atlantic Ocean around St Helena, finding that their behavior varies seasonally and with depth, impacting the catchability of the fish by local fishing fleets.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Fabio Campanella, Martin A. Collins, Emma F. Young, Vladimir Laptikhovsky, Paul Whomersley, Jeroen van der Kooij
Summary: Seamounts are recognized as hotspots for pelagic productivity and diversity in the open ocean, with varying productivity levels depending on bathymetric features and oceanography. They attract pelagic species and are vulnerable to overexploitation. Mapping fish biomass at seamounts is crucial for identifying vulnerable areas and understanding ecosystem dynamics and vulnerability to fishing pressures.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Philip R. Hollyman, Marta Soeffker, Jim Roberts, Oliver T. Hogg, Vladimir V. Laptikhovsky, Jose P. Queiros, Chris Darby, Mark Belchier, Martin A. Collins
Summary: The South Sandwich Islands is a biologically rich area with clear differences in fish and invertebrate communities across its latitudinal range, driven by environmental factors such as seawater temperature. Climate change may alter these communities with poleward shifts in species ranges.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Editorial Material
Oceanography
M. A. Collins, T. Hart, O. T. Hogg, P. R. Hollyman, C. M. Liszka, H. A. Stewart, P. N. Trathan
Summary: The South Sandwich Islands are an isolated, oceanic, volcanically formed archipelago in the Atlantic sector of the Southern Ocean. Despite being remote, the region has a history of exploitation and currently supports small, sustainably managed fisheries for two species of toothfish. The research papers in this special issue cover a wide range of topics, contributing to our understanding of oceanography, ecology, and habitat use by vertebrate predators, while also highlighting the lack of knowledge about the region and pointing towards future research priorities.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Oceanography
M. Belchier, M. A. Collins, S. Gregory, P. Hollyman, M. Soeffker
Summary: The exploitation of marine resources in the South Sandwich Islands started with fur seal hunting in the 19th Century, followed by pelagic whaling and trawl fisheries for demersal finfish and krill. However, fishing activity in the region is now limited to a licensed demersal longline fishery for toothfish. The South Sandwich Islands is now protected by a Marine Protected Area and additional management measures.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Oceanography
Marta Soeffker, Philip R. Hollyman, Martin A. Collins, Oliver T. Hogg, Ainsley Riley, Vladimir Laptikhovsky, Timothy Earl, Jim Roberts, Eleanor MacLeod, Mark Belchier, Chris Darby
Summary: This paper focuses on two toothfish species, the Patagonian toothfish and the Antarctic toothfish, in the South Sandwich Islands (SSI) region. The study reveals that the Patagonian toothfish around the SSI is connected to the adjacent South Georgia population but has unique characteristics. On the other hand, the Antarctic toothfish at the SSI represents the northern extent of a larger stock. The relative importance of the SSI in the life cycle of both species, especially in the context of climate change, is also explored.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Biodiversity Conservation
Ryan A. Saunders, Philip R. Hollyman, Sally E. Thorpe, Martin A. Collins
Summary: The depth of occurrence, biomass, and population dynamics of benthopelagic Gymnoscopelus nicholsi on the South Georgia shelf were examined using bottom trawl data collected over a span of 1987 to 2019. The study found inter-annual variation in the depth of occurrence and biomass of G. nicholsi, with shallower depths being associated with warmer summer sea surface temperatures. Antarctic hill was identified as an important dietary component for older G. nicholsi cohorts in the benthopelagic zone. The study highlights the importance of understanding trophic connectivity between pelagic and near-bottom realms in the Southern Ocean ecosystem.
Article
Biodiversity Conservation
Jamie Coleman, Philip R. Hollyman, Andy Black, Martin A. Collins
Summary: Light-induced bird strikes on vessels occur frequently in areas with high seabird density, resulting in bird mortalities. This study reports four bird strike events along the south coast of South Georgia and discusses potential contributing factors. Actions to reduce the occurrence of these events and the importance of reporting them are emphasized.
Editorial Material
Environmental Sciences
Paul Whomersley, James Bell, Elizabeth Clingham, Martin A. Collins, David A. Feary, Joanna Stockill, Sam Weber, Oliver Yates, Kylie Bamford
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
Jennifer J. Freer, Rupert A. Collins, Geraint A. Tarling, Martin A. Collins, Julian C. Partridge, Martin J. Genner
Summary: This study investigates the roles of geography, habitat use, and lateral photophores in lanternfish speciation using phylogenetic, ecological, and morphological data. The results suggest that large-scale oceanographic features structure the diversity of lanternfish communities and that speciation within this family might not require geographical isolation, but instead relies on divergent habitat use and differences in photophore patterns.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2022)
Article
Marine & Freshwater Biology
Susannah V. Calderan, Tracey Dornan, Sophie Fielding, Ryan Irvine, Jennifer A. Jackson, Russell Leaper, Cecilia M. Liszka, Paula A. Olson, Martin A. Collins
MARINE MAMMAL SCIENCE
(2023)
