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78 results for “courtship display”
Data matrices for: Phylogenomics of peacock spiders and their kin (Salticidae, Maratus), with implications for the evolution of male courtship displays
<p>Understanding diversity has been a pursuit in evolutionary biology since its inception. A challenge arises when sexual selection has played a role in diversification. Questions of what constitutes a "species", homoplasy versus synapomorphy, and whether sexually-selected traits show phylogenetic signal have hampered work on many systems. Peacock spiders are famous for sexually selected male courtship dances and peacock-like abdominal ornamentation. This lineage of jumping spiders currently includes over 90 species classified into two genera, <i>Maratus</i> and <i>Saratus</i>. Most <i>Maratus</i> species have been placed into groups based on secondary sexual characters, but evolutionary relationships remain unresolved. Here we assess relationships in peacock spiders using phylogenomic data (UCEs and RAD-seq). Analyses reveal that <i>Maratus</i> and the related genus <i>Saitis</i>, are paraphyletic. Many, but not all, groups within a "core <i>Maratus</i>"<i> </i>clade are recovered as genetic clades but we find evidence for undocumented speciation. Based on original observations of male courtship, our comparative analyses suggest that courtship behavior and peacock-like abdominal ornamentation has evolved sequentially with some traits inherited from ancestors with others evolving repeatedly and independently from "simple" forms. Our results have important implications for the taxonomy of these spiders, and provide a much-needed evolutionary framework for comparative studies of sexual signal character evolution.</p>
Data from: Control of signaling alignment during the dynamic courtship display of a jumping spider
During communication, alignment between signals and sensors can be critical. Signals are often best perceived from specific angles, and sensory systems can also exhibit strong directional biases. However, we know little about how animals establish and maintain such signaling alignment during communication. To investigate this, we characterized the spatial dynamics of visual courtship signaling in the jumping spider Habronattus pyrrithrix. The male performs forward-facing displays involving complex color and movement patterns, with distinct long- and short-range phases. The female views displays with 2 distinct eye types and can only perceive colors and fine patterns of male displays when they are presented in her frontal field of view. Whether and how courtship interactions produce such alignment between male display and female field of view is unknown. We recorded relative positions and orientations of both actors throughout courtship and established the role of each sex in maintaining signaling alignment. Males always oriented their displays toward the female. However, when females were free to move, male displays were consistently aligned with female principal eyes only during short-range courtship. When female position was fixed, signaling alignment consistently occurred during both phases, suggesting that female movement reduces communication efficacy. When female models were experimentally rotated to face away during courtship, males rarely repositioned themselves to re-align their display. However, males were more likely to present certain display elements after females turned to face them. Thus, although signaling alignment is a function of both sexes, males appear to rely on female behavior for effective communication.
Figure 31 in Courtship display of the peacock spider Maratus aquilus (Araneae: Salticidae: Euophryini)
Figure 31. Final approach of a courting male (1), and mating by a Maratus aquilus pair (2-7).
Figure 30 in Courtship display of the peacock spider Maratus aquilus (Araneae: Salticidae: Euophryini)
Figure 30. Sequential frames (1-6, 25 fps video) showing the display of a female Maratus aquilus.
Figure 29 in Courtship display of the peacock spider Maratus aquilus (Araneae: Salticidae: Euophryini)
Figure 29. Sequential frames (1-12, 25 fps video) showing the display of a female Maratus aquilus.
Figure 16 in Courtship display by a peacock spider, Maratus constellatus (Araneae: Salticidae: Euophryini: Australphryni)
Figure 16 (continued from previous page). Female Maratus constellatus.
Figure 10 in Courtship display by a peacock spider, Maratus constellatus (Araneae: Salticidae: Euophryini: Australphryni)
Figure 10 (continued from previous page).
Figure 3 in Courtship display by a peacock spider, Maratus constellatus (Araneae: Salticidae: Euophryini: Australphryni)
Figure 3. Single leg wave, with one leg extended, by two different male Maratus constellatus.
Figure 16 in Courtship display by a peacock spider, Maratus constellatus (Araneae: Salticidae: Euophryini: Australphryni)
Figure 16 (continued on next page). Female Maratus constellatus.
Figure 17 in Courtship display by a peacock spider, Maratus constellatus (Araneae: Salticidae: Euophryini: Australphryni)
Figure 17. Ventral views of four living female Maratus constellatus.
Data matrices for: Phylogenomics of peacock spiders and their kin (Salticidae, Maratus), with implications for the evolution of male courtship displays
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Data from: Control of signaling alignment during the dynamic courtship display of a jumping spider
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Sound recordings of courtship displays of Allen's (Selasphorus sasin), Rufous (S. rufus), and Hybrid (S. sasin x S. rufus) hummingbirds recorded between 2014 and 2021 in California, Oregon, and Alaska
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Data from: Strategic exploitation of fluctuating asymmetry in male Endler's guppy courtship displays is modulated by social environment
Lateral asymmetry in signalling traits enables males to strategically exploit their best side. In many animals, both body colouration and fluctuating asymmetry are signals of male attractiveness. We demonstrated experimentally that even sexually naïve male Poecilia wingei were able to identify their most attractive side (i.e. that with a higher proportion of carotenoid pigmentation) and use it preferentially during courtship. Notably, males retained their strategic signalling in a male-biased social environment, whereas they ceased to signal strategically in a female-biased environment. The degree of asymmetry in colouration did not affect overall courtship activity. Strategic lateralization in courtship displays was strongest and most repeatable in the male-biased social environment where males competed with rivals for matings. Individual asymmetry in colouration changed considerably over a period of 3 months. This suggests that colouration is a dynamic feature during adulthood and that males are capable of tracking and strategically exploiting their lateral asymmetry in accordance with their social environment.
Data from: Strategic exploitation of fluctuating asymmetry in male Endler's guppy courtship displays is modulated by social environment
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Figure 10 in Courtship display of the peacock spider Maratus aquilus (Araneae: Salticidae: Euophryini)
Figure 10. Consecutive frames (1-25, 25 fps video) showing an elevated fan wave display with legs III extended by a male Maratus aquilus. In this example the fan was fully elevated with extended flaps and waved continuously at a relatively low to moderate amplitude (2.8 left/right cycles/s, amplitude 10-15°). Chelicerae were exposed but the pedipalps were not moved.
Figure 19 in Courtship display by a peacock spider, Maratus constellatus (Araneae: Salticidae: Euophryini: Australphryni)
Figure 19. Immature female Maratus constellatus, by instar (I-1 to I-5, instars 1-5). All photographs represent a single individual, not tracked beyond the fifth instar (I-5).
Figure 10 in Courtship display by a peacock spider, Maratus constellatus (Araneae: Salticidae: Euophryini: Australphryni)
Figure 10 (continued from previous page, continued on next page). Sequential frames (25 fps) from a semaphore display.
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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.