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328 results for “cichlid fish”
Data from: Correlated evolution of body and fin morphology in the cichlid fishes
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Data from: Species-specific differences in adaptive phenotypic plasticity in an ecologically relevant trophic trait: hypertrophic lips in Midas cichlid fishes
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Data from: Variable light environments induce plastic spectral tuning by regional opsin coexpression in the African cichlid fish, Metriaclima zebra
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Data from: Mouth dimorphism in scale-eating cichlid fish from Lake Tanganyika advances individual fitness
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Data from: Genetic mapping of horizontal stripes in Lake Victoria cichlid fishes: benefits and pitfalls of using of dense linkage mapping in non-model organisms
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Data from: High levels of interspecific gene flow in an endemic cichlid fish adaptive radiation from an extreme lake environment
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Data from: Reproduction and maternal care increases oxidative stress in a mouthbrooding cichlid fish
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Data from: The ecological and genetic basis of convergent thick-lipped phenotypes in cichlid fishes
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Data from: Genomic signatures of divergent selection and speciation patterns in a 'natural experiment', the young parallel radiations of Nicaraguan crater lake cichlid fishes
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Mapping active promoters by ChIP-seq profiling of H3K4me3 in cichlid fish - a first step to uncover cis-regulatory elements in ecological model teleosts
GEO Series GSE62791. Oreochromis niloticus. 1 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Dynamic co-evolution of transposable elements and the piRNA pathway in East African cichlid fishes [smallRNA-seq]
GEO Series GSE252804. Tropheops sp. 'mauve'; Oreochromis niloticus; Haplochromis burtoni; Maylandia zebra; Astatotilapia calliptera; Pundamilia nyererei. 31 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Ecotype differences in aggression, neural activity and behaviorally relevant gene expression in cichlid fish
GEO Series GSE140690. Mchenga conophoros; Petrotilapia sp. 'chitimba'. 16 samples. Type: Expression profiling by high throughput sequencing.
Dynamic co-evolution of transposable elements and the piRNA pathway in East African cichlid fishes
GEO Series GSE252805. Astatotilapia calliptera; Tropheops sp. 'mauve'; Pundamilia nyererei; Haplochromis burtoni; Oreochromis niloticus; Maylandia zebra. 40 samples. Type: Expression profiling by high throughput sequencing.
Epigenetic regulation of gonadal and brain aromatase expression in a cichlid fish with environmental sex determination
GEO Series GSE135681. blank sample; Pelvicachromis pulcher. 173 samples. Type: Methylation profiling by high throughput sequencing.
Mapping epigenetic divergence in the massive radiation of Lake Malawi cichlid fishes
GEO Series GSE158514. Aulonocara stuartgranti; Maylandia zebra; Rhamphochromis longiceps; Astatotilapia calliptera; Pundamilia nyererei; Petrotilapia genalutea; Diplotaxodon limnothrissa. 60 samples. Type: Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing.
Epigenetic Divergence during Early Stages of Speciation in an African Crater Lake Cichlid Fish
GEO Series GSE174120. Astatotilapia calliptera. 66 samples. Type: Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing.
Data from: Conservation and novelty in the microRNA genomic landscape of hyperdiverse cichlid fishes
MicroRNAs (miRNAs) play crucial roles in the post-transcriptional control of messenger RNA (mRNA). These miRNA-mRNA regulatory networks are present in nearly all organisms and contribute to development, phenotypic divergence, and speciation. To examine the miRNA landscape of cichlid fishes, one of the most species-rich families of vertebrates, we profiled the expression of both miRNA and mRNA in a diverse set of cichlid lineages. Among these, we found that conserved miRNAs differ from recently arisen miRNAs (i.e. lineage specific) in average expression levels, number of target sites, sequence variability, and physical clustering patterns in the genome. Furthermore, conserved miRNA target sites tend to be enriched at the 5' end of protein-coding gene 3'UTRs. Consistent with the presumed regulatory role of miRNAs, we detected more negative correlations between the expression of miRNA-mRNA functional pairs than in random pairings. Finally, we provide evidence that novel miRNA targets sites are enriched in genes involved in protein synthesis pathways. Our results show how conserved and evolutionarily novel miRNAs differ in their contribution of the genomic landscape and highlight their particular evolutionary roles in the adaptive diversification of cichlids.
Data from: Mouth asymmetry in the textbook example of scale-eating cichlid fish is not a discrete dimorphism after all
Individuals of the scale-eating cichlid fish, Perissodus microlepis, from Lake Tanganyika tend to have remarkably asymmetric heads that are either left-bending or right-bending. The 'left' morph opens its mouth markedly towards the left and preferentially feeds on the scales from the right side of its victim fish and the 'right' morph bites scales from the victims' left side. This striking dimorphism made these fish a textbook example of their astonishing degree of ecological specialization and as one of the few known incidences of negative frequency-dependent selection acting on an asymmetric morphological trait, where left and right forms are equally frequent within a species. We investigated the degree and the shape of the frequency distribution of head asymmetry in P. microlepis to test whether the variation conforms to a discrete dimorphism, as generally assumed. In both adult and juvenile fish, mouth asymmetry appeared to be continuously and unimodally distributed with no clear evidence for a discrete dimorphism. Mixture analyses did not reveal evidence of a discrete or even strong dimorphism. These results raise doubts about previous claims, as reported in textbooks, that head variation in P. microlepis represents a discrete dimorphism of left- and right-bending forms. Based on extensive field sampling that excluded ambiguous (i.e. symmetric or weakly asymmetric) individual adults, we found that left and right morphs occur in equal abundance in five populations. Moreover, mate pairing for 51 wild caught pairs was random with regard to head laterality, calling into question reports that this laterality is maintained through disassortative mating.
Data from: Community assembly in Lake Tanganyika cichlid fish: quantifying the contributions of both niche-based and neutral processes
The cichlid family features some of the most spectacular examples of adaptive radiation. Evolutionary studies have highlighted the importance of both trophic adaptation and sexual selection in cichlid speciation. However, it is poorly understood what processes drive the composition and diversity of local cichlid species assemblages on relatively short, ecological timescales. Here, we investigate the relative importance of niche-based and neutral processes in determining the composition and diversity of cichlid communities inhabiting various environmental conditions in the littoral zone of Lake Tanganyika, Zambia. We collected data on cichlid abundance, morphometrics, and local environments. We analyzed relationships between mean trait values, community composition, and environmental variation, and used a recently developed modeling technique (STEPCAM) to estimate the contributions of niche-based and neutral processes to community assembly. Contrary to our expectations, our results show that stochastic processes, and not niche-based processes, were responsible for the majority of cichlid community assembly. We also found that the relative importance of niche-based and neutral processes was constant across environments. However, we found significant relationships between environmental variation, community trait means, and community composition. These relationships were caused by niche-based processes, as they disappeared in simulated, purely neutrally assembled communities. Importantly, these results can potentially reconcile seemingly contrasting findings in the literature about the importance of either niche-based or neutral-based processes in community assembly, as we show that significant trait relationships can already be found in nearly (but not completely) neutrally assembled communities; that is, even a small deviation from neutrality can have major effects on community patterns.
Data from: Gut microbiota dynamics during dietary shift in Eastern African cichlid fishes
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.