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287 results for “courtship”
Data from: Variation in thermal courtship activity curves across individuals exceeds variation across populations and sexes
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Data from: Interspecific covariation in courtship displays, iridescent plumage, solar orientation, and their interactions in hummingbirds
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Evolutionary conservation and diversification of auditory neural circuits that process courtship songs in Drosophila
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Data from: Courtship behaviour, nesting microhabitat and assortative mating in sympatric stickleback species-pairs
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Data from: Gustatory polymorphism mediates a new adaptive courtship strategy
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Sexual signals persist over deep time: ancient co-option of bioluminescence for courtship displays in cypridinid ostracods
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A courtship behavior that makes monandrous females polyandrous
Females of many animal species mate several times with different males (polyandry), whereas females of some species mate with a single male (monandry) only once. Little is known about the mechanisms by which these different mating systems evolve. Females of <i>Drosophila prolongata</i> mate serially, unlike <i>D. melanogaster</i> females that refuse to remate for several days after their first mating (remating suppression, RS). Nevertheless, interestingly, non-virgin <i>D. prolongata</i> females refuse to remate with males that are prohibited from performing their species-specific courtship behavior, leg vibration (LV), suggesting that LV overrides RS making it cryptic in <i>D. prolongata</i>. In this study, we examined how long this cryptic RS persists. Surprisingly, it was sustained for at least two weeks, showing that RS is substantially augmented in <i>D. prolongata</i> compared to that of <i>D. melanogaster</i>. The two most closely related species to <i>D. prolongata</i>, <i>D. rhopaloa</i> and <i>D. carrolli</i>, do not perform LV and showed augmented RS, supporting the idea that augmented RS could have evolved before LV was acquired. These results suggested that <i>D. prolongata</i> females are intrinsically monandrous, whereas the newly evolved courtship behavior makes them polyandrous. This is a rare case in which a proximate mechanism of polyandry evolution from monandry is demonstrated.
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>
FIGURE 12 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 12. Oscillograms and frequency spectra of the courtship song of Chorthippus dubius from Altai. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in B–E). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different elements of the courtship song are indicated by numbers 1–2. Frequency spectra shown for the element 1 (F) and the element 2 (G).
FIGURE 14 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 14. Oscillograms and frequency spectrum of the courtship songs of two males (A, B) of Chorthippus angulatus from Almaty region. Song recordings are presented at two different speeds (faster oscillograms of the indicated parts of the songs shown in C–F). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different elements of the courtship song are indicated by numbers 1–3. Frequency spectra shown for the element 1 (G) and the element 2 (H).
FIGURE 9 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 9. Oscillograms and frequency spectrum of the courtship songs of two males (A, B) of Gomphocerus sibiricus from Akmola region. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in C–F). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different elements of the courtship song are indicated by numbers 1–3. Frequency spectrum shown for the element 1 (G).
FIGURE 10 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 10. Positions of antennae in a male of Gomphocerus sibiricus during courtship, when producing the element 1 (A), when producing the element 3 (B–F). The antennae are swung in such a way as they describe a cone when producing one longer pulse and 3–4 shorter pulses (see Fig. 9 E).
FIGURE 8 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 8. Positions of a male of Stenobothrus miramae during the element 3 of courtship. (A) The male hits a female several times with his head; (B) the male slowly raises both hind femora and keeps them over head.
FIGURE 6 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 6. Movements of antennae during the element 3 of courtship in Myrmeleotettix pallidus. Figures A–F demonstrate successive stages of the antennae position.
FIGURE 13 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 13. Oscillograms and frequency spectrum of the courtship songs of two males of Chorthippus karelini from Almaty region (A) and Aktobe region (B). Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in C–F). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different elements of the courtship song are indicated by numbers 1–5, drawings show different positions of the hind legs and abdomen at the corresponding moments of the song. Frequency spectra shown for the element 3 (G), the element 4 (H), the element 5 (I–J).
FIGURE 3 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 3. Oscillograms (A-D) and frequency spectra (E-F) of the courtship song of Omocestus haemorrhoidalis from Orenburg region. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in B–D). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different elements of the courtship song are indicated by numbers 1–3. Frequency spectra shown for the elements 1 (E) and 2 (F).
FIGURE 4 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 4. Oscillograms and frequency spectrum of the courtship songs of two males (A, B) of Omocestus petraeus from Orenburg region. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in C–F). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different elements of the courtship song are indicated by numbers 1–3. Frequency spectrum (G) shown for element 2.
FIGURE 2 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 2. Oscillograms and frequency spectra of the courtship songs of two males (A, B) of Omocestus viridulus from Altai Republic. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in C–E). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different elements of the courtship song are indicated by numbers 1–4. Frequency spectra shown for the elements 1 (F) and 3 (G).
FIGURE 1 in Contributions to the study of the grasshopper (Orthoptera: Acrididae Gomphocerinae) courtship songs from Kazakhstan and adjacent territories
FIGURE 1. Map of localities where the specimens were collected for the song recordings. Kazakhstan: 1—10 SE of Aktobe, near Aktjubinsk reservoir; 2—Akmola region, ab. 90 km SW of Kokshetau, near Balkashino; 3—Akmola region, ab. 60 km SE km of Nur-Sultan, environs of Vishnevka, near Vjacheslavskoe reservoir, 4—Akmola region, ab. 40 km NW of Ereimentau, Baysary; 5—Pavlodar region, ab. 48 km W of Ekibastuz, ab. 3 km W of Schiderty; 6—Pavlodar region, ab. 44 km SW of Pavlodar, environs of Pogranichnoe; 7—Pavlodar region, between Terenkol' and Beregovoe, near Irtysh river; 8—Pavlodar region, Zhelezinsky district, near Pyatiryzhsk; 9—Pavlodar region, environs of Irtyshsk; 10—Almaty region, ab. 60 km NE of Taldykorgan, near Kapal; 11- Almaty region, between Saryozek and Zharkent, environs of Basshi; 12—Almaty region, ab. 6 km SW of Zharkent; 13—Almaty region, ab. 4 km SE of Kegen, flood-lands of Kegen river; 14—Orenburg region, ab. 10 km W of Novosergievka; 15—ab. 10 km E of Orenburg, near Ural river; 16—Orenburg region, ab. 20 km NW of Orsk, environs of railway station Guberlja; 17—Altai Republic, ab. 26 km S of Shebalino, Semensky pass; 18—Altai Republic, ab. 26 km SE of Ongudai, environs of Kupchegen'.
FIGURE 2 in Description of female genitalia, additional morphological variations, and courtship behavior and copulation of Macrostemum brasiliense (Fischer 1970) (Trichoptera Hydropsychidae)
FIGURE 2. Macrostemum brasiliense (Fischer 1970), female genitalia. 2A, left lateral; 2B, with phallus in copula, ventral; 2C, vaginal apparatus, ventral; 2D, vaginal apparatus with phallus in copula, left lateral; 2E, ventral.
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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.