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20 results for “Bicyclus anynana”
The yellow gene regulates behavioral plasticity by repressing male courtship in Bicyclus anynana butterflies
<p>Seasonal plasticity in male courtship in Bicyclus anynana butterflies is due to variation in levels of the steroid hormone 20E (20-hydroxyecdysone) during pupation. Wet season (WS) males have high levels of 20E and become active courters. Dry season (DS) males, have lower levels of 20E and reduced courtship rates, although WS courtship rates can be achieved if DS male pupae are injected with 20E at 30% of pupation. Here we investigated the genes involved in male courtship plasticity and examine whether 20E plays an organizational role in the pupal brain that later influences the sexual behaviour of adults. We show that DS pupal brains have a 7-fold upregulation of the yellow gene relative to the WS and that knocking out yellow leads to increased male courtship. We find that injecting 20E into DS pupa reduced yellow expression although not significantly. Our results show that yellow is a repressor of the neural circuity for male courtship behaviour in B. anynana. 20E levels experienced during pupation could play an organizational role during pupal brain development by regulating yellow expression, however, other factors might also be involved. Our findings are in striking contrast to Drosophila where yellow is required for male courtship.</p>
The yellow gene regulates behavioral plasticity by repressing male courtship in Bicyclus anynana butterflies
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Lack of sibling avoidance during mate selection in the butterfly Bicyclus anynana
<p>Species susceptible to inbreeding depression are hypothesized to combat this problem through a number of different mechanisms, including kin recognition. For species with kin recognition, it is unknown if filial recognition is innate or due to prior juvenile experience with siblings. Here, we first test for the presence of kin recognition, and then test these two hypotheses for the development of filial recognition, in the butterfly <em>Bicyclus anynana</em>, a species that suffers from inbreeding depression when forcibly inbred but recovers within a few generations when allowed to breed freely. We evaluate whether the rapid recovery from inbreeding depression is associated with either innate or learned filial recognition. First, we determined whether females innately prefer unrelated males over sibling males using females reared in isolation and then given a choice between an unrelated and a sibling male. Then, we determined if females raised with siblings learned to detect and avoid mating with siblings as adults when provided a choice between an unrelated male and a sibling male. Finally, we determined if females raised with siblings could learn to detect and avoid mating with familiar siblings when given a choice between familiar and unfamiliar siblings. We found that females mated randomly in all three choice combinations. Observed male behavior also did not influence female mating outcome. Our results suggest that adult females do not innately avoid or learn to avoid siblings during mate selection, and that filial detection may not be as critical to reproductive fitness in <em>B. anynana</em> as previously thought.</p>
Behavioral data for: A learning experience elicits sex-dependent neurogenomic responses in Bicyclus anynana butterflies
<p>This is the behavioral data file that corresponds to the behavioral data reported in "A learning experience elicits sex-dependent neurogenomic responses in <em>Bicyclus anyana</em> butterflies" by D.A. Ernst, G.A. Agcaoili, A.N. Merrill, & E. L. Westerman, published in Molecular Ecology. It contains one spreadsheet, with all the behavioral data corresponding to the training, trainer, and naive butterflies utilized in the comparative brain and eye transcriptomics analyses conducted in the manuscript. In our study, we show that male and female <em>B. anynana</em> butterflies exhibit sexually dimorphic gene expression in the brain and eye during a learning event. We further identify genes that were associated with learning independent of sex and show that a number of genes known to influence wing pattern are also differentially expressed in the brain and eye during a mate choice learning event. The sexually dimorphic expression was not the result of baseline differences in activity levels, as males and females exhibited similar amounts of behavior during the training and naive experiences.</p>
Lack of sibling avoidance during mate selection in the butterfly Bicyclus anynana
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Behavioral data for: A learning experience elicits sex-dependent neurogenomic responses in Bicyclus anynana butterflies
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Data from: Predation favours Bicyclus anynana butterflies with fewer forewing eyespots
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Data from: Divergent sensory transcriptomic profiles in positive and negative learning in <em>Bicyclus anynana</em> butterflies
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Data from: Footprints of selection in wild populations of Bicyclus anynana along a latitudinal cline
One of the major questions in ecology and evolutionary biology is how variation in the genome enables species to adapt to divergent environments. Here, we study footprints of thermal selection in candidate genes in six wild populations of the afrotropical butterfly Bicyclus anynana, sampled along a ~3,000 km latitudinal cline. We sequenced coding regions of 31 selected genes with known functions in metabolism, pigment production, development, and heat shock responses. These include genes for which we expect a priori a role in thermal adaptation and, thus, varying selection pressures along a latitudinal cline, and genes we do not expect to vary clinally and can be used as controls. We identified amino-acid substitution polymorphisms in 13 genes and tested these for clinal variation by correlation analysis of allele frequencies with latitude. In addition, we used two FST-based outlier methods to identify loci with higher population differentiation than expected under neutral evolution, while accounting for potentially confounding effects of population structure and demographic history. Two metabolic enzymes of the glycolytic pathway, UGP and Treh, showed clinal variation. The same loci showed elevated population differentiation and were identified as significant outliers. We found no evidence of clines in the pigmentation genes, heat shock proteins and developmental genes. However, we identified outlier loci in more localized parts of the range in the pigmentation genes yellow and black. We discuss that the observed clinal variation and elevated population divergence in UGP and Treh may reflect adaptation to a geographic thermal gradient.
Transgenerational inheritance of learned preferences for novel host plant odors in Bicyclus anynana butterflies
<p>Many phytophagous insects have strong preferences for their host plants, which they recognize via odors, making it unclear how novel host preferences develop in the course of insect diversification. Insects may learn to prefer new host plants via exposure to their odors and pass this learned preference to their offspring. We tested this hypothesis by examining larval odor preferences before and after feeding them with leaves coated with control and novel odors and by examining odor preferences again in their offspring. Larvae of the parental generation developed a preference for two of these odors over their development. These odor preferences were also transmitted to the next generation. Offspring of butterflies fed on these new odors chose these odors more often than offspring of butterflies fed on control leaves. In addition, offspring of butterflies fed on banana odors had a significant naïve preference for the banana odors in contrast to the naïve preference for control leaves shown by individuals of the parental generation. Thus, butterflies can learn to prefer novel host plant odors via exposure to them during larval development and transmit these learned preferences to their offspring. This ability potentially facilitates shifts in host plant use over the course of insect diversification.</p>
Data from: Footprints of selection in wild populations of Bicyclus anynana along a latitudinal cline
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Transgenerational inheritance of learned preferences for novel host plant odors in Bicyclus anynana butterflies
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Data from: Environmentally induced dispersal-related life history syndrome in the tropical butterfly, Bicyclus anynana
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Data from: Transcriptome-wide differential gene expression in Bicyclus anynana butterflies: female vision-related genes are more plastic
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Data from: The predictive adaptive response: modeling the life history evolution of the butterfly, Bicyclus anynana, in seasonal environments.
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Understanding the fate of the hungry caterpillar: Transcriptional and DNA methylation programs during metamorphosis of the butterfly Bicyclus anynana (RNA-Seq).
GEO Series GSE276477. Bicyclus anynana. 15 samples. Type: Expression profiling by high throughput sequencing.
Understanding the fate of the hungry caterpillar: Transcriptional and DNA methylation programs during metamorphosis of the butterfly Bicyclus anynana (methylation).
GEO Series GSE276476. Bicyclus anynana. 15 samples. Type: Methylation profiling by high throughput sequencing.
Pupal brain transcriptome for Bicyclus anynana
<p><span>Seasonal plasticity in male courtship in <em>Bicyclus anynana</em> butterflies is due to variation in levels of the steroid hormone 20E (20-hydroxyecdysone) during pupation. Wet season (WS) males have high levels of 20E and become active courters. Dry season (DS) males, have lower levels of 20E and reduced courtship rates, although WS courtship rates can be achieved if DS male pupae are injected with 20E at 30% of pupation. Here, we investigated the genes involved in male courtship plasticity and examine whether 20E plays an organizational role in the pupal brain that later influences the sexual behaviour of adults. We show that DS pupal brains have a 7-fold upregulation of the <em>yellow</em> gene relative to the WS and that knocking out <em>yellow</em> leads to increased male courtship. We find that injecting 20E into DS pupa reduced <em>yellow</em> expression although not significantly. Our results show that <em>yellow</em> is a repressor of the neural circuity for male courtship behaviour in B. anynana. 20E levels experienced during pupation could play an organizational role during pupal brain development by regulating <em>yellow</em> expression, however, other factors might also be involved. Our findings are in striking contrast to Drosophila where <em>yellow</em> is required for male courtship.</span></p>
Pupal brain transcriptome for Bicyclus anynana
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The molecular basis of scale development highlighted by a single-cell atlas of Bicyclus anynana butterfly pupal forewings
GEO Series GSE241536. Bicyclus anynana. 1 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.