Results 21 to 30 of about 540 (163)

First data on the daily food consumption by Antarctic fish Trematomus hansoni (Actinopterygii: Perciformes: Nototheniidae) in captivity [PDF]

Acta Ichthyologica et Piscatoria, 2020
In this study, we present first observations on the feeding behaviour of an Antarctic notothenioid fish, the striped rockcod, Trematomus hansoni Boulenger, 1902.
R. Gorniak, E. Riginella, N. Koschnick, V.V. Laptikhovsky   +3 more
doaj   +3 more sources

Multiple independent chromosomal fusions accompanied the radiation of the Antarctic teleost genus Trematomus (Notothenioidei:Nototheniidae)

BMC Evolutionary Biology, 2020
Background Chromosomal rearrangements are thought to be an important driving force underlying lineage diversification, but their link to speciation continues to be debated.
Juliette Auvinet, Paula Graça, Agnès Dettai, Angel Amores, John H. Postlethwait, H. William Detrich, Catherine Ozouf-Costaz, Olivier Coriton, Dominique Higuet   +8 more
doaj   +1 more source

Transcriptomics and comparative analysis of three antarctic notothenioid fishes. [PDF]

PLoS ONE, 2012
For the past 10 to 13 million years, Antarctic notothenioid fish have undergone extraordinary periods of evolution and have adapted to a cold and highly oxygenated Antarctic marine environment.
Seung Chul Shin, Su Jin Kim, Jong Kyu Lee, Do Hwan Ahn, Min Gyu Kim, Hyoungseok Lee, Jungeun Lee, Bum-Keun Kim, Hyun Park   +8 more
doaj   +1 more source

Persistent organic pollutants in Antarctic notothenioid fish and invertebrates associated with trophic levels.

PLoS ONE, 2018
Notothenioid fish and invertebrate samples from Antarctica were collected in the austral summer of 2009, and analyzed for persistent organic pollutants (POPs), including polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs), and ...
Fung-Chi Ko, Wei-Ling Pan, Jing-O Cheng, Te-Hao Chen, Fu-Wen Kuo, Shu-Ji Kao, Chih-Wei Chang, Hsuan-Ching Ho, Wei-Hsien Wang, Li-Sing Fang   +9 more
doaj   +1 more source

Nutritional Immunity Triggers the Modulation of Iron Metabolism Genes in the Sub-Antarctic Notothenioid Eleginops maclovinus in Response to Piscirickettsia salmonis

Frontiers in Immunology, 2017
Iron deprivation is a nutritional immunity mechanism through which fish can limit the amount of iron available to invading bacteria. The aim of this study was to evaluate the modulation of iron metabolism genes in the liver and brain of sub-Antarctic ...
Danixa Martínez, Danixa Martínez, Danixa Martínez, Ricardo Oyarzún, Ricardo Oyarzún, Ricardo Oyarzún, Juan Pablo Pontigo, Alex Romero, Alex Romero, Alejandro J. Yáñez, Alejandro J. Yáñez, Luis Vargas-Chacoff, Luis Vargas-Chacoff   +12 more
doaj   +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

Evolution in chronic cold: varied loss of cellular response to heat in Antarctic notothenioid fish

BMC Evolutionary Biology, 2018
Background Confined within the freezing Southern Ocean, the Antarctic notothenioids have evolved to become both cold adapted and cold specialized. A marked signature of cold specialization is an apparent loss of the cellular heat shock response (HSR). As
Kevin T. Bilyk, Luis Vargas-Chacoff, C.-H.Christina Cheng   +2 more
doaj   +1 more source

Effect of elevated temperature on membrane lipid saturation in Antarctic notothenioid fish [PDF]

PeerJ, 2018
Homeoviscous adaptation (HVA) is a key cellular response by which fish protect their membranes against thermal stress. We investigated evolutionary HVA (long time scale) in Antarctic and non-Antarctic fish.
Vanita C. Malekar, James D. Morton, Richard N. Hider, Robert H. Cruickshank, Simon Hodge, Victoria J. Metcalf   +5 more
doaj   +2 more sources

Mobilization of retrotransposons as a cause of chromosomal diversification and rapid speciation: the case for the Antarctic teleost genus Trematomus

BMC Genomics, 2018
Background The importance of transposable elements (TEs) in the genomic remodeling and chromosomal rearrangements that accompany lineage diversification in vertebrates remains the subject of debate.
J. Auvinet, P. Graça, L. Belkadi, L. Petit, E. Bonnivard, A. Dettaï, W. H Detrich, C. Ozouf-Costaz, D. Higuet   +8 more
doaj   +1 more source

Genomics of cold adaptations in the Antarctic notothenioid fish radiation

Nature Communications, 2022
Abstract Numerous novel adaptations characterise the radiation of notothenioids, the dominant fish group in the freezing seas of the Southern Ocean. To improve understanding of the evolution of this iconic fish group, we generated and analysed new genome assemblies for 24 species covering all major subgroups of the radiation. We present
Bista I, Wood JMD, Desvignes T, McCarthy SA, Matschiner M, Ning Z, Tracey A, Torrance J, Sims Y, Chow W, Smith M, Oliver K, Haggerty L, Salzburger W, Postlethwait JH, Howe K, Clark MS, Detrich WH, Cheng CC, Miska EA, Durbin R.   +20 more
europepmc   +7 more sources