A parasite outbreak in notothenioid fish in an Antarctic fjord [PDF]
iScience, 2022 Summary: Climate changes can promote disease outbreaks, but their nature and potential impacts in remote areas have received little attention. In a hot spot of biodiversity on the West Antarctic Peninsula, which faces among the fastest changing climates ...
Thomas Desvignes +10 more
doaj +6 more sources
Mitochondrial replication's role in vertebrate mtDNA strand asymmetry [PDF]
Open Biology, 2023 Mitogenomes are defined as compact and structurally stable over aeons. This perception results from a vertebrate-centric vision, where few types of mtDNA rearrangements are described.
André Gomes-dos-Santos +9 more
doaj +2 more sources
Comparative analysis of length-weight relationships and condition factors of two congeneric rockcod species from the shores of King George Island, Antarctica [PDF]
PeerJLength-weight relationships (LWR) and Fulton’s condition factors (K) of two notothenioid species, Notothenia rossii and Notothenia coriiceps, were assessed using 295 and 148 specimens, respectively.
Seungyeon Lee +5 more
doaj +3 more sources
Identification of Antibacterial Activity of Hepcidin From Antarctic Notothenioid Fish [PDF]
Frontiers in Microbiology, 2022 Hepcidin is a small peptide composed of signal peptide, propeptide, and the bioactive mature peptide from N terminal to C terminal. Mature hepcidin is an antibacterial peptide and iron regulator with eight highly conserved cysteines forming four ...
Mingli Liu +11 more
doaj +2 more sources
Novel mitochondrial genome rearrangements including duplications and extensive heteroplasmy could underlie temperature adaptations in Antarctic notothenioid fishes [PDF]
Scientific Reports, 2023 Mitochondrial genomes are known for their compact size and conserved gene order, however, recent studies employing long-read sequencing technologies have revealed the presence of atypical mitogenomes in some species.
Bushra Fazal Minhas +3 more
doaj +2 more sources
Developmental constraint shaped genome evolution and erythrocyte loss in Antarctic fishes following paleoclimate change. [PDF]
PLoS Genetics, 2020 In the frigid, oxygen-rich Southern Ocean (SO), Antarctic icefishes (Channichthyidae; Notothenioidei) evolved the ability to survive without producing erythrocytes and hemoglobin, the oxygen-transport system of virtually all vertebrates.
Jacob M Daane +5 more
doaj +2 more sources
Orphan genes are not a distinct biological entity. [PDF]
BioessaysOrphan genes represent genes with no homologs in other species and are widely assumed to represent genuine species‐specific loci. We show that molecular evolution and sequence homology analyses reject this assumption and that orphan genes constitute a patchwork of genes of different evolutionary ages that originate throughout various mechanisms ...
Pereira AB +7 more
europepmc +2 more sources
Antibiotic and Heavy Metal Resistance in Marine Bacteria from Terra Nova Bay (Ross Sea): Insights from Wild Fish and Environmental Samples [PDF]
AnimalsThis study examines the occurrence of bacteria resistant to antibiotics and heavy metals in Terra Nova Bay, a coastal area of the Ross Sea in Antarctica that is increasingly recognised as vulnerable to human influence.
Enrico Gugliandolo +12 more
doaj +2 more sources
Biology, 2022 Antarctic icefish are extraordinary in their ability to thrive without haemoglobin. We wanted to understand how the mitochondrial proteome has adapted to the loss of this protein. Metabolic pathways that utilise oxygen are most likely to be rearranged in
Gunjan Katyal +6 more
doaj +1 more source
Fish muscle: the exceptional case of notothenioids [PDF]
Fish Physiology and Biochemistry, 2008 Fish skeletal muscle is an excellent model for studying muscle structure and function, since it has a very well-structured arrangement with different fiber types segregated in the axial and pectoral fin muscles. The morphological and physiological characteristics of the different muscle fiber types have been studied in several teleost species.
Fernandez, Daniel Alfredo, Calvo, Jorge
openaire +3 more sources