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11 results for “Morpho butterflies”
PCA coordinates describing dorsal colour pattern variation in 723 Morpho butterflies
<p>Species interactions such as mimicry can promote trait convergence but disentangling this effect from those of shared ecology, evolutionary history and niche conservatism is often challenging. Here by focusing on wing color pattern variation within and between three butterfly species living in sympatry in a large proportion of their range, we tested the effect of species interactions on trait diversification. These butterflies display a conspicuous iridescent blue coloration on the dorsal side of their wings and a cryptic brownish colour on the ventral side. Combined with an erratic and fast flight, these color patterns increase the difficulty of capture by predators and contribute to the high escape abilities of these butterflies. We hypothesize that, beyond their direct contribution to predator escape, these wing patterns can be used as signals of escape abilities by predators, resulting in positive frequency-dependent selection favouring convergence in wing pattern in sympatry. To test this hypothesis, we quantified dorsal wing pattern variations of 723 butterflies from the three species sampled throughout their distribution, including sympatric and allopatric situations and compared the phenotypic distances between species, sex and localities. We detected a significant effect of localities on colour pattern, and higher inter-specific resemblance in sympatry as compared to allopatry, consistent with the hypothesis of local convergence of wing patterns. Our results provide support to the existence of escape mimicry in the wild and stress the importance of estimating trait variation within species to understand trait variation between species, and to a larger extent, trait diversification at the macro-evolutionary scale.</p>
Data from "The relevance of flash coloration against avian predation in a Morpho butterfly: A field experiment in a tropical rainforest"
<p>This dataset contains all the data related to the manuscript "The relevance of flash coloration against avian predation in a <em>Morpho </em>butterfly: A field experiment in a tropical rainforest". </p>
PCA coordinates describing dorsal colour pattern variation in 723 Morpho butterflies
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Morpho butterflies eyespot data
<p>This data set contains (1) the presence absence data of each eyespot at each of the different putative locations (eyespot_nb.txt); (2) the coordinates of the 4 landmarks used to assess eyespot positions plus landmarks depicting wing shape for wing shape/eyespot covariation (Moyen-post-final.txt); (3) the coordinates of the semilandmarks and landmarks used to assess eyespot shape variation (Ocelles-contour-final BE.txt).</p>
Patterns of morphological variation highlight the effect of natural selection on eyespots modularity in the butterfly Morpho telemachus - Dataset
<p>Morphological correlations can stem from developmental constraints but also from selective pressures. Butterfly eyespots are repeated wing color pattern elements, widespread across species. As developmental serial homologues, they are controlled by similar developmental pathways imposing correlations among eyespots: selection on a single eyespot may induce correlated responses in all eyespots. We study the variations in the ventral eyespots of <em>Morpho</em> <em>telemachus</em>, where two different selective regimes are likely to act: while most eyespots are always-visible, two eyespots are conditionally-displayed: hidden at rest, they can be exposed when the butterflies are threatened, or during sexual interactions. We investigate how such contrasted selection across eyespots can alter the covariations imposed by their shared developmental origin. We quantified eyespots' co-variations within a large population of <em>M</em>. <em>telemachus</em> and compared the observed patterns to those found in <em>M</em>. <em>helenor</em>, where all eyespots are always-visible and thus probably affected by a similar selection regime. We found that <em>M</em>. <em>telemachus</em> conditionally-displayed eyespots are less variable than always-visible eyespots and that these two eyespots form a separate variational module in this species, in contrast to <em>M</em>. <em>helenor</em>. Our results suggest that eyespots' covariations were shaped by selection, highlighting how natural selection may promote the evolution of modularity.</p>
Patterns of morphological variation highlight the effect of natural selection on eyespots modularity in the butterfly Morpho telemachus - Dataset
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Morpho butterflies eyespot data
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Adaptive evolution of flight in Morpho butterflies
<p class="Paragraph">The diversity of flying animals suggests that countless combinations of flight morphologies and behaviors have evolved with specific lifestyles, thereby exploiting diverse aerodynamic mechanisms. How morphology, flight behavior and aerodynamic properties together diversify with contrasting ecology remains to be elucidated. We studied the adaptive co-divergence in wing shape, flight behavior and aerodynamic efficiency among <i>Morpho</i> butterflies living in different forest strata, by combining high-speed videography in the field with morphometric analyses and aerodynamic modelling. By comparing canopy and understory species, we show that adaptation to an open canopy environment resulted in increased glide efficiency. Moreover, this enhanced glide efficiency was achieved by different canopy species through distinct combinations of flight behavior, wing shape and aerodynamic mechanisms, highlighting the multiple pathways of adaptive evolution.</p>
Punctuational ecological changes rather than global factors drive species diversification and the evolution of wing phenotypes in Morpho butterflies
<p>Assessing the relative importance of geographical and ecological drivers of evolution is paramount to understand the diversification of species and traits at the macroevolutionary scale. Here, we use an integrative approach, combining phylogenetics, biogeography, ecology, and quantified phenotypes to investigate the drivers of both species and phenotypic diversification of the iconic Neotropical butterfly genus <i>Morpho</i>. We generated a time-calibrated phylogeny for all known species and inferred historical biogeography. We fitted models of time-dependent (accounting for rate heterogeneity across the phylogeny) and paleoenvironment-dependent diversification (accounting for global effect on the phylogeny). We used geometric morphometrics to assess variation of wing size and shape across the tree, and investigated their dynamics of evolution. We found that the diversification of <i>Morpho</i> is best explained when considering variable diversification rates across the tree, possibly associated with lineages occupying different microhabitat conditions. First, a shift from understory to canopy was characterized by an increased speciation rate partially coupled with an increasing rate of wing shape evolution. Second, the occupation of dense bamboo thickets accompanying a major host-plant shift from dicotyledons towards monocotyledons was associated with a simultaneous diversification rate shift and an evolutionary "jump" of wing size. Our study points to a diversification pattern driven by punctuational ecological changes instead of a global driver or biogeographic history.</p>
Punctuational ecological changes rather than global factors drive species diversification and the evolution of wing phenotypes in Morpho butterflies
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Adaptive evolution of flight in Morpho butterflies
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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.
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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.