ArticleGenome biology2015
Kiwi genome provides insights into evolution of a nocturnal lifestyle.
Article in Genome biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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36 citing papers in PubMed, 101 citations in OpenAlex.
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- Effect of Different Types of Sequence Data on Palaeognath Phylogeny.Genome biology and evolution · 2023Article
- Evolution of visual guanylyl cyclases and their activating proteins with respect to clade and species-specific visual system adaptation.Frontiers in molecular neuroscience · 2023Article
- Genomic insight into the nocturnal adaptation of the black-crowned night heron (Nycticorax nycticorax).BMC genomics · 2022Article
- Hummingbird plumage color diversity exceeds the known gamut of all other birds.Communications biology · 2022Article
- Comparative Genomics Provides Insights into Adaptive Evolution in Tactile-Foraging Birds.Genes · 2022Article
- Genomic basis for skin phenotype and cold adaptation in the extinct Steller's sea cow.Science advances · 2022Article
- Genomic insights into the evolutionary relationships and demographic history of kiwi.PloS one · 2022Article
- Ecological Specialization and Evolutionary Reticulation in Extant Hyaenidae.Molecular biology and evolution · 2021Article
- The eggshell structure inEcology and evolution · 2021Article
- Dynamic evolution of transposable elements, demographic history, and gene content of paleognathous birds.Zoological research · 2021Article
- Genomic Evidence for Sensorial Adaptations to a Nocturnal Predatory Lifestyle in Owls.Genome biology and evolution · 2020Article
- Development and characterization of ten novel microsatellite loci for the emu (Dromaius novaehollandiae) and genetic diversity of Japanese farm populations.Molecular biology reports · 2020Article
- New genome assembly of the barn owl (Ecology and evolution · 2020Article
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Authors and funding
15 authors at 7 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundKiwi, comprising five species from the genus Apteryx, are endangered, ground-dwelling bird species endemic to New Zealand. They are the smallest and only nocturnal representatives of the ratites. The timing of kiwi adaptation to a nocturnal niche and the genomic innovations, which shaped sensory systems and morphology to allow this adaptation, are not yet fully understood.
resultsWe sequenced and assembled the brown kiwi genome to 150-fold coverage and annotated the genome using kiwi transcript data and non-redundant protein information from multiple bird species. We identified evolutionary sequence changes that underlie adaptation to nocturnality and estimated the onset time of these adaptations. Several opsin genes involved in color vision are inactivated in the kiwi. We date this inactivation to the Oligocene epoch, likely after the arrival of the ancestor of modern kiwi in New Zealand. Genome comparisons between kiwi and representatives of ratites, Galloanserae, and Neoaves, including nocturnal and song birds, show diversification of kiwi's odorant receptors repertoire, which may reflect an increased reliance on olfaction rather than sight during foraging. Further, there is an enrichment of genes influencing mitochondrial function and energy expenditure among genes that are rapidly evolving specifically on the kiwi branch, which may also be linked to its nocturnal lifestyle.
conclusionsThe genomic changes in kiwi vision and olfaction are consistent with changes that are hypothesized to occur during adaptation to nocturnal lifestyle in mammals. The kiwi genome provides a valuable genomic resource for future genome-wide comparative analyses to other extinct and extant diurnal ratites.
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