Results 51 to 60 of about 718 (182)

Cold adaptation in antarctic notothenioids: Comparative transcriptomics reveals novel insights in the peculiar role of gills and highlights signatures of cobalamin deficiency [PDF]

, 2021
Far from being devoid of life, Antarctic waters are home to Cryonotothenioidea, which represent one of the fascinating cases of evolutionary adaptation to extreme environmental conditions in vertebrates.
Buonocore, Francesco, Giulianini, Piero Giulio, Pallavicini, Alberto, Samuele Greco, Piero Giulio Giulianini, Santovito G., Greco S., Miccoli A., Santovito, Gianfranco, Coscia M. R., Buonocore F., Alberto Pallavicini, Giulianini P. G., Andrea Miccoli, Miccoli, Andrea, Maria Rosaria Coscia, Francesco Buonocore, Marco Gerdol, Fornaini N. R., Ansaloni, Federico, Scapigliati G., Fornaini, Nicola Reinaldo, Greco, Samuele, Torboli, Valentina, Torboli V., Gianfranco Santovito, Scapigliati, Giuseppe, Giuseppe Scapigliati, Gerdol, Marco, Federico Ansaloni, Ansaloni F., Pallavicini A., Coscia, Maria Rosaria, Nicola Reinaldo Fornaini, Gerdol M., Valentina Torboli   +35 more
core   +1 more source

Modified fin morphology in mackerel icefish (Champsocephalus gunnari) may indicate nesting behaviour

Journal of Fish Biology, EarlyView.
Abstract Monitoring reproductive traits in Southern Ocean species is challenging. Males in some channichthyids thicken the epithelium along their anal fins to aid nest construction. This study presents initial evidence that the only commercially harvested channichthyid, mackerel icefish (Champsocephalus gunnari), exhibits modifications to their anal ...
Huw W. James, Fabrice Stephenson, Martin A. Collins, Simeon L. Hill, William D. K. Reid   +4 more
wiley   +1 more source

Organelle genome evolution in the early‐diverging brown algal lineage, Ishigeales

Journal of Phycology, Volume 62, Issue 3, Page 1090-1107, June 2026.
Abstract The order Ishigeales is an early‐diverging lineage of brown algae that exhibits remarkable morphological diversity ranging from simple filamentous forms to robust terete and foliose thalli, which may reflect complex evolutionary histories in their organelle genomes.
Hayeon Hwang, Hocheol Kim, Seok‐Wan Choi, Hiroshi Kawai, Hwan Su Yoon   +4 more
wiley   +1 more source

The Axes of Divergence for the Evolutionary Radiation of Notothenioid Fishes in Antarctica

Diversity
Notothenioid fishes, a perciform group, radiated in the cold shelf waters around the Antarctic continent and the 110 species dominate fish diversity, abundance, and biomass at levels of ≈77%, 92%, and 91%, respectively.
Joseph T. Eastman
doaj   +1 more source

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

Oikos, Volume 2026, Issue 4, April 2026.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade, Taryn Sepúlveda, Cristóbal Rivera, Cristian Aldea, Tomás I. Marina   +4 more
wiley   +1 more source

The hemoglobins of sub-Antarctic fishes of thesuborder Notothenioidei [PDF]

, 2010
Fishes of the perciform suborder Notothenioidei provide an excellent opportunity for studying the evolution and functional importance of evolutionary adaptations to temperature.
Coppola, Daniela, Daniela Giordano, VERGARA, ALESSANDRO, Giordano, Daniela, Russo, Roberta, di Prisco, Guido, Verde, Cinzia, MAZZARELLA, LELIO, Guido di Prisco, Roberta Russo, Alessandro Vergara, D. Giordano, Daniela Coppola, Lelio Mazzarella, Cinzia Verde, C. Verde, R. Russo, G. di Prisco, D. Coppola   +18 more
core   +1 more source

Neofunctionalization of zona pellucida proteins enhances freeze-prevention in the eggs of Antarctic notothenioids

Nature Communications, 2016
Despite subzero temperature of their surroundings, eggs of Antarctic notothenioid fishes do not freeze. This study shows the expansion of genes related to freezing temperature in notothenioid which also acquired of ice melting-promoting zona pellucida ...
Lixue Cao, Qiao Huang, Zhichao Wu, Dong-dong Cao, Zhanling Ma, Qianghua Xu, Peng Hu, Yanxia Fu, Yu Shen, Jiulin Chan, Cong-zhao Zhou, Wanying Zhai, Liangbiao Chen   +12 more
doaj   +1 more source

Projected Warming of the Southern Ocean Disrupts Embryonic Development and Hatch Timing in Antarctic Fish

Global Change Biology Communications, Volume 1, Issue 1, March 2026.
Embryos are particularly sensitive to thermal challenge. Antarctic fish embryos raised at projected Southern Ocean temperatures hatch during the winter, have a high incidence of morphological abnormalities, have shorter body lengths, and express genes indicative of cellular stress.
Margaret Streeter, Nathalie R. Le François, Thomas Desvignes, Jacob Grondin, John H. Postlethwait, H. William Detrich III, Jacob M. Daane   +6 more
wiley   +1 more source

Spatial distribution of pelagic fish off Adélie and George V Land, East Antarctica in the austral summer 2008 [PDF]

, 2011
Pelagic fish assemblages and community structure were examined along longitudinal and meridian transects off Adélie and George V Land, East Antarctica, in the austral summer 2008.
Eric Tavernier, Koubbi, Philippe, Percy-Alexander Hulley, Philippe Koubbi, Tavernier, Eric, Masato Moteki, Patrice Pruvost, Hulley, Percy-Alexander, Pruvost, Patrice, Moteki, Masato   +9 more
core   +1 more source

Hardy–Weinberg Equilibrium Filtering in Population Genomics: Empirical Review and Decision Framework for Improved Practice

Ecology and Evolution, Volume 16, Issue 1, January 2026.
Hardy–Weinberg equilibrium (HWE) filtering is widely used in population genomics, but its application remains inconsistent and often lacks biological justification. This review went through recent empirical studies that demonstrate awareness of these issues to assess whether conceptual understanding has led to improved practice. This review synthesises
Yu‐Hsun Hsu
wiley   +1 more source