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The genome of the arapaima (Arapaima gigas) provides insights into gigantism, fast growth and chromosomal sex determination system


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Made available in DSpace on 2019-10-06T15:38:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-12-01

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.

University of Wuerzburg Physiological Chemistry Biocenter

Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences Institute of Hydrobiology Chinese Academy of Sciences

University of Chinese Academy of Sciences

Leibniz-Institute of Freshwater Ecology and Inland Fisheries IGB, Müggelseedamm 301

Reproductive and Molecular Biology Group Departament of Morphology Institute of Biosciences UNESP

INRA UR1037 LPGP Fish Physiology and Genomics

MIAT INRA Toulouse CS 52627

Montpellier GenomiX (MGX) c/o Institut de Génomique Fonctionnelle 141 rue de la cardonille

Institute of Neuroscience University of Oregon Eugene

Lehrstuhl für Zoologie und Evolutionsbiologie Department of Biology University of Konstanz Universitätstraße 10

Comprehensive Cancer Center Mainfranken University Hospital

Hagler Institute for Advanced Study and Department of Biology Texas A&M University

Reproductive and Molecular Biology Group Departament of Morphology Institute of Biosciences UNESP

Document Type Journal article
Language English
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