TY  - JOUR
A1  - Du, Kang
A1  - Wuertz, Sven
A1  - Adolfi, Mateus
A1  - Kneitz, Susanne
A1  - Stöck, Matthias
A1  - Oliveira, Marcos
A1  - Nóbrega, Rafael
A1  - Ormanns, Jenny
A1  - Kloas, Werner
A1  - Feron, Romain
A1  - Klopp, Christophe
A1  - Parrinello, Hugues
A1  - Journot, Laurent
A1  - He, Shunping
A1  - Postlethwait, John
A1  - Meyer, Axel
A1  - Guiguen, Yann
A1  - Schartl, Manfred
T1  - The genome of the arapaima (Arapaima gigas) provides insights into gigantism, fast growth and chromosomal sex determination system
JF  - Scientific Reports
N2  - We have sequenced the genome of the largest freshwater fish species of the world, the arapaima. Analysis of gene family dynamics and signatures of positive selection identified genes involved in the specific adaptations and unique features of this iconic species, in particular it’s large size and fast growth. Genome sequences from both sexes combined with RAD-tag analyses from other males and females led to the isolation of male-specific scaffolds and supports an XY sex determination system in arapaima. Whole transcriptome sequencing showed that the product of the gland-like secretory organ on the head surface of males and females may not only provide nutritional fluid for sex-unbiased parental care, but that the organ itself has a more specific function in males, which engage more in parental care.
KW  - Genome
KW  - Genomics
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-201333
VL  - 9
ER  - 
TY  - JOUR
A1  - Kim, Bo-Mi
A1  - Amores, Angel
A1  - Kang, Seunghyun
A1  - Ahn, Do-Hwan
A1  - Kim, Jin-Hyoung
A1  - Kim, Il-Chan
A1  - Lee, Jun Hyuck
A1  - Lee, Sung Gu
A1  - Lee, Hyoungseok
A1  - Lee, Jungeun
A1  - Kim, Han-Woo
A1  - Desvignes, Thomas
A1  - Batzel, Peter
A1  - Sydes, Jason
A1  - Titus, Tom
A1  - Wilson, Catherine A.
A1  - Catchen, Julian M.
A1  - Warren, Wesley C.
A1  - Schartl, Manfred
A1  - Detrich, H. William III
A1  - Postlethwait, John H.
A1  - Park, Hyun
T1  - Antarctic blackfin icefish genome reveals adaptations to extreme environments
JF  - Nature Ecology & Evolution
N2  - Icefishes (suborder Notothenioidei; family Channichthyidae) are the only vertebrates that lack functional haemoglobin genes and red blood cells. Here, we report a high-quality genome assembly and linkage map for the Antarctic blackfin icefish Chaenocephalus aceratus, highlighting evolved genomic features for its unique physiology. Phylogenomic analysis revealed that Antarctic fish of the teleost suborder Notothenioidei, including icefishes, diverged from the stickleback lineage about 77 million years ago and subsequently evolved cold-adapted phenotypes as the Southern Ocean cooled to sub-zero temperatures. Our results show that genes involved in protection from ice damage, including genes encoding antifreeze glycoprotein and zona pellucida proteins, are highly expanded in the icefish genome. Furthermore, genes that encode enzymes that help to control cellular redox state, including members of the sod3 and nqo1 gene families, are expanded, probably as evolutionary adaptations to the relatively high concentration of oxygen dissolved in cold Antarctic waters. In contrast, some crucial regulators of circadian homeostasis (cry and per genes) are absent from the icefish genome, suggesting compromised control of biological rhythms in the polar light environment. The availability of the icefish genome sequence will accelerate our understanding of adaptation to extreme Antarctic environments.
KW  - animal physiology
KW  - evolutionary genetics
KW  - genomics
KW  - ichthyology
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-325811
VL  - 3
ER  -