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Insertion Hot Spots of DIRS1 Retrotransposon and Chromosomal Diversifications among the Antarctic Teleosts Nototheniidae
The strong intrafamily TE conservation and wide distribution across species of the whole family suggest an ancestral acquisition with potential secondary losses in some lineages, including the Trematomus, the plunderfishes, and the icefishes.
Multiple independent chromosomal fusions accompanied the radiation of the Antarctic teleost genus Trematomus (Notothenioidei:Nototheniidae)
Comparing the timing of acquisition of the fusions in the closely related genera Notothenia and Trematomus of the nototheniid species family, it is concluded that they exhibit distinct chromosomal evolutionary histories, which may be relevant to different speciation scenarios.
Mobilization of retrotransposons as a cause of chromosomal diversification and rapid speciation: the case for the Antarctic teleost genus Trematomus
The predominance of DIRS1 in Trematomus species, their transposition mechanism, and their strategic location in “hot spots” of insertion on chromosomes are likely to have facilitated nonhomologous recombination, thereby increasing genomic rearrangements.
Developmental constraint shaped genome evolution and erythrocyte loss in Antarctic fishes following paleoclimate change
It is shown that one species of the red-blooded dragonfish clade evolved a spherocytic anemia that phenocopies human patients with this disease via orthologous mutations, and it is found that the hematopoietic marrow of icefish species retained proerythroblasts, which indicates that early erythroid development remains intact.
Trematominae and Artedidraconinae: contrasted mitogenome evolution for two Antarctic radiations
This paper aims to demonstrate the efforts towards in-situ applicability of EMMARM, as to provide real-time information about the response of the immune system to EMTs in the context of a rapidly changing environment.