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32 results for “monomorphic”
Data from: Where do monomorphic sexual systems fit in the evolution of dioecy? Insights from the largest family of angiosperms
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Data from: Local adaptation and divergence in colour signal conspicuousness between monomorphic and polymorphic lineages in a lizard
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Data associated to: A bioenergetics approach to understanding sex differences in the foraging behaviour of a sexually monomorphic species
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Data from: Speciation is not necessarily easier in species with sexually monomorphic mating signals
Should we have different expectations regarding the likelihood and pace of speciation by sexual selection when considering species with sexually monomorphic mating signals? Two conditions that can facilitate rapid species divergence are Felsenstein's one-allele mechanism and a genetic architecture that includes a genetic association between signal and preference loci. In sexually monomorphic species, the former can manifest in the form of mate choice based on phenotype matching. The latter can be promoted by selection acting upon genetic loci for divergent signals and preferences expressed simultaneously in each individual rather than separately, on signal loci in males and preference loci in females. Both sexes in the Chrysoperla carnea-group of green lacewings (Insecta, Neuroptera, Chrysopidae) produce sexually monomorphic species-specific mating signals. We hybridized the two species C. agilis and C. carnea to test for evidence of these speciation-facilitating conditions. Hybrid signals were more complex than the parents and we observed a dominant influence of C. carnea. We found a dominant influence of C. agilis on preferences in the form of hybrid discrimination against C. carnea. Preferences in hybrids followed patterns predicting preference loci that determine mate choice rather than a one-allele mechanism. The genetic association between signal and preference we detected in the segregating hybrid crosses indicate that speciation in these species with sexually monomorphic mating signals can have occurred rapidly. However, we need additional evidence to determine whether such genetic associations form more readily in sexually monomorphic species compared to dimorphic species and consequently facilitate speciation.
Data from: Small and ugly? Phylogenetic analyses of the "selfing syndrome" reveal complex evolutionary fates of monomorphic primrose flowers
One of the most common trends in plant evolution, loss of self-incompatibility and ensuing increases in selfing, is generally assumed to be associated with a suite of phenotypic changes, notably a reduction of floral size, termed the selfing syndrome. We investigate whether floral morphological traits indeed decrease in a deterministic fashion after losses of self-incompatibility, as traditionally expected, using a phylogeny of 124 primrose species containing nine independent transitions from heterostyly (heteromorphic incompatibility) to homostyly (monomorphic self-compatibility), a classic system for evolution of selfing. We find similar overall variability of homostylous and heterostylous species, except for diminished herkogamy in homostyles. Bayesian mixed models demonstrate differences between homostylous and heterostylous species in all traits, but net effects across species are small (except herkogamy) and directionality differs among traits. Strongly drift-like evolutionary trajectories of corolla tube length and corolla diameter inferred by Ornstein-Uhlenbeck models contrast with expected deterministic trajectories toward small floral size. Lineage-specific population genetic effects associated with evolution of selfing may explain that reductions of floral size represent one of several possible outcomes of floral evolution after loss of heterostyly in primroses. Contrary to the traditional paradigm, selfing syndromes may, but do not necessarily evolve in response to increased selfing.
Data from: Speciation is not necessarily easier in species with sexually monomorphic mating signals
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Data from: Gene co-expression modules underlying polymorphic and monomorphic zooids in the colonial hydrozoan, Hydractinia symbiolongicarpus
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Data from: Small and ugly? Phylogenetic analyses of the “selfing syndrome” reveal complex evolutionary fates of monomorphic primrose flowers
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Transcriptomes of de novo lab-adapted monomorphic Trypanosoma brucei (EATRO 1125) and naturally monomorphic T. evansi and T. equiperdum.
GEO Series GSE184265. Trypanosoma brucei brucei; Trypanosoma equiperdum; Trypanosoma evansi. 39 samples. Type: Expression profiling by high throughput sequencing.
Clinical Predictors of Short Term Outcomes of Ablation of Idiopathic Monomorphic PVCs
ClinicalTrials.gov study NCT06486818. IPD Sharing: YES. Countries: 1. Publications: 0.
Evaluation of Inducible Monomorphic Ventricular Tachycardia (MMVT) in Patients With St. Jude Medical (SJM) Implantable Cardioverter Defibrillator (ICD) Systems or Cardiac Resynchronization Therapy Def
ClinicalTrials.gov study NCT02584595. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Gene expression during head development in a sexually monomorphic stalk-eyed fly
GEO Series GSE46694. Teleopsis quinqueguttata; Teleopsis dalmanni. 28 samples. Type: Expression profiling by array.
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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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.