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1,245 results for “adult male”
Figure 3 in Adult display by a penultimate male Coastal Peacock Spider (Araneae: Salticidae: Euophryinae: Maratus speciosus)
Figure 3. Display positions of the same male in front of the adult female, after moulting to the adult stage. 9, Note the asymmetric position of legs III during a semaphore display with the fan partly expanded but depressed.
Figure 2. Two adult male Maratus cristatus with light-brown setation. 1 in Five new peacock spiders from Western Australia (Araneae: Salticidae: Euophryini: Maratus Karsch 1878)
Figure 2. Two adult male Maratus cristatus with light-brown setation. 1, Anterior view of extended fan during courtship display. 2, Ventral view of opisthosoma during display showing retracted lateral tuft beneath each lobe of the fan. The white colular tuft is found in many Maratus species. 5, Display with lateral tufts of the fan fully extended. 8, The black cuticle of the carapace is almost fully exposed on the clypeus. Background scales in the eye region of the first male (♂ #1) are light brown and corresponding scales of the second male (♂ #3) are grey.
Figure 2 in Adult display by a penultimate male Coastal Peacock Spider (Araneae: Salticidae: Euophryinae: Maratus speciosus)
Figure 2. Sequential (1-28, not all consecutive) frames from a video clip (25FPS, 20msec exposure/frame) of the penultimate male displaying to the adult female Maratus speciosus. After stepwise lowering of legs III in a semaphore display (1-5), the fan was waved (6-10) and legs III were elevated asynchronously (11-12) at the start of fan dance to the spider's left (14-28).
Figure 25. Two adult male Cosmophasis lami. 1-5, Male from Bali. 6-10 in Three new jumping spiders of the genus Cosmophasis from Wallacea (Araneae: Salticidae: Chrysillini)
Figure 25. Two adult male Cosmophasis lami. 1-5, Male from Bali. 6-10, Male from Port Moresby, Papua. Photographs (6-10) © Wayne P. Maddison, used under a CC BY 3.0 license.
Figure 24. Adult male Cosmophasis lami from the Singapore Botanic Garden. 5 in Three new jumping spiders of the genus Cosmophasis from Wallacea (Araneae: Salticidae: Chrysillini)
Figure 24. Adult male Cosmophasis lami from the Singapore Botanic Garden. 5, Note the violet iridescence on the side of the carapace. Photographs © Nicky Bay, used with permission.
Figures 1-4. Adult male Epeus exdomus. 1-2 in New record of the jumping spider Epeus exdomus from Nepal (Araneae: Salticidae: Plexippina)
Figures 1-4. Adult male Epeus exdomus. 1-2, Dorsal views of spider in life. 3-4, Anterodorsal (3) and ventral (4) views of spider prior to preservation, showing natural colouration. The scale at right is in mm.
Figure 21. Two adult male Maratus sapphirus. 6 in Two new peacock spiders from southeastern Australia (Araneae: Salticidae: Euophryini: Maratus Karsch 1878)
Figure 21. Two adult male Maratus sapphirus. 6, Elevated and expanded fan during courtship display. 11-12, Posterolateral views of the opisthosoma showing the folded right flap of the fan (dorsal opisthosomal plate) in front of the exposed brown, soft cuticle of the opisthosoma.
Figure 7. Feeding adult male Neobrettus tibialis. 1 in New observations of the jumping spider Neobrettus tibialis (Araneae: Salticidae: Spartaeini) in West Bengal, India
Figure 7. Feeding adult male Neobrettus tibialis. 1, Feeding on small insect. 2, Feeding on nematoceran. 3, Filial oophagy. 4, Oophagy combined with feeding on an insect larva. This might represent capture of an oophagous parasitoid that would otherwise compete for the female's supply of eggs. 5, Detail from (4),
Figure 2. Nine different living adult male Maratus aquilus. 2 in Courtship display of the peacock spider Maratus aquilus (Araneae: Salticidae: Euophryini)
Figure 2. Nine different living adult male Maratus aquilus. 2, The posterior part of the fan can be elevated when the fan is partly elevated as shown here. This makes the iridescent green posterodorsal ornament of the fan (Figure 3:11) visible from the front.
Figures 31-38. Adult female and adult male under separate leaves. 31 in Notes on the jumping spider Brettus cingulatus in Karnataka (Araneae: Salticidae: Spartaeini)
Figures 31-38. Adult female and adult male under separate leaves. 31, Later in the day the nest site occupied by the previous female was unoccupied. 32, This adult male was present under a leaf near the nest site. 33, Detail of (33). 34, Late on the next day this adult female occupied the nest site. Based on scale pattern this appears to be the female observed previously at this site (29-30). 35-38, On the next day this female continued to occupy the nest site (38, inset at lower right) as an adult male rested beneath a different leaf at a distance (38, inset at upper left).
Figure 1. Adult male Peckhamia americana rafting a leaf across a in Rafting by Peckhamia americana (Araneae: Salticidae: Synagelina)
Figure 1. Adult male Peckhamia americana rafting a leaf across a water surface by paddling with its front legs while holding that leaf with its rear legs. The grey area in each photo (out of focus) represents the bottom of the shallow pan in which this spider and leaf were floating. Photos by G. Beaton.
Figure 4. Adult male B in First record of Brettus cingulatus from India, with a review of Brettus in South and Southeast Asia (Araneae: Salticidae: Spartaeinae)
Figure 4. Adult male B. cingulatus from: 1-2, Makunda Christian Hospital, Karimganj, District Assam (Vijay Anand Ismavel, by permission, [20]). 3-4, Kerala (Sunny Joseph, by permission [14]). 5-6, Bangladesh (Raiyan Ahmed, by permission, [26]). 7, Mangalore, Karnataka, feeding on spider (Rakesh Kumar B., by permission, [27]. 8, Western Ghats, feeding on spider (Vipin Baliga, permission by CC-BY-2.0 license, [19]).
Figure 2. Four different living adult male M. personatus. 3 in Maratus personatus, a masked peacock spider from Cape Riche, Western Australia (Araneae: Salticidae: Euophryinae)
Figure 2. Four different living adult male M. personatus. 3, The scales of this male have rubbed off, exposing the black cuticle of the dorsal opisthosomal plate. 9, The small chelicerae are black and glabrous, separated on either side from a marginal band of white setae.
Figure 10. Adult male Brettus cingulatus. 1 in Conversion of the egg nest to a brood nest by the female Brettus cingulatus (Araneae: Salticidae: Spartaeini)
Figure 10. Adult male Brettus cingulatus. 1, Display with pedipalps extended to the sides. 2, Grooming, with fangs extended and chelicerae separated to reveal the endites and rostrum to the rear. Attribution and ©: 1-2, acharya_mr.
Data for: Juvenile leg autotomy predicts adult male morph in a New Zealand harvestman with weapon polymorphism
<p><span>Intraspecific weapon polymorphisms that arise via conditional thresholds may be affected by juvenile experiences such as predator encounters, yet this idea has rarely been tested. The New Zealand harvestman <em>Forsteropsalis</em> <em>pureora</em> has three male morphs: majors (alphas and betas) are large-bodied with large chelicerae used in male-male contests, while minors (gammas) are small-bodied with small chelicerae and scramble to find mates. Individuals use leg autotomy to escape predators and there is no regeneration of the missing leg. Here, we tested whether juvenile experience affects adult morph using leg autotomy scars as a proxy of predator encounters. Juvenile </span><span>males that lost at least one leg (with either locomotory or sensory function) had a 45 times higher probability of becoming a minor morph at adulthood than intact juvenile males. </span><span>Leg loss during development may affect foraging, locomotion, and/or physiology, potentially linking a juvenile's predator encounters to their final adult morph and future reproductive tactic.</span></p>
Data for: Mechanisms that can cause population decline under heavily skewed male-biased adult sex ratios
<ol> <li><span>While adult sex ratio (ASR) is a crucial component for population management, there is still a limited understanding of how its fluctuation affects population dynamics. To demonstrate mechanisms that hinder population growth under a biased ASR, we examined changes in reproductive success with ASR using a decapod crustacean exposed to female-selective harvesting. </span></li> <li> <span>We examined the effect of ASR on the spawning</span><span> success </span><span>of females. A laboratory experiment showed that the number of eggs carried by females decreased as the proportion of males in the mating groups increased. Although the same result was not observed in data collected over 25 years in the wild, the negative effect of ASR was suggested when success in carrying eggs was considered as a spawning success. These results indicate that a surplus of males results in females failing to carry eggs, probably due to sexual coercion, and</span> <span>the negative effect of ASR can be detected at the population level only when the bias increases because failure in spawning success occurs in part of population.</span> </li> <li><span>We experimentally examined how male-biased sex ratios affected the maintenance of genetic diversity in a population. The diversity of paternity in a clutch increased with the number of candidate fathers. However, over 50% of a clutch was fertilised by a single male regardless of the sex ratio, and the degree of diversity was less than half of the highest diversity expected in each mating group. </span></li> <li><span>We also experimentally examined the mating ability of males during the breeding season. The experiment showed that multiple mating by males could not compensate for the risk that their genotypes would be lost when multiple males competed for one female. These results suggest that a male-biased ASR could trigger a decline of genetic diversity in a population.</span></li> <li><span>We show that ASR skewed by female-selective harvesting decreases reproductive success not only of males that have few mating opportunities but also of females. We discuss that we may still underestimate the significance of ASR on population persistence due to the difficulty of revealing the effect of ASR.</span></li> </ol>
Figures 1-16. Adult Cytaea oreophila from Ben Tre Province, Vietnam. 1-6, Living males. 7-8, Living females. 9-10 in First record of Cytaea (C. oreophila) from Vietnam
Figures 1-16. Adult Cytaea oreophila from Ben Tre Province, Vietnam. 1-6, Living males. 7-8, Living females. 9-10, Ventral views of left male pedipalp. 11-12, Ventral views of right male pedipalp. 13, Dorsal view of male carapace, showing chelicerae. 14, Ventral view of male prosoma, showing bicuspid retromarginal tooth of each chelicera. 15, Ventral view of female opisthosoma. 16, Detail from (15), showing epigynum (anterior toward the top of the page).
Seedling performance in a dioecious tree species is similar near female and male conspecific adults despite differences in colonization by arbuscular mycorrhizal fungi
<p>Plant–soil feedbacks (PSFs) are a key driver of species diversity and composition in plant communities worldwide; however, the factors that may cause feedbacks to vary within species are rarely examined. In dioecious species, the strength of feedbacks may differ near female plants that produce seed versus near male plants (which do not) because repeated inputs of seeds and high seedling densities near females may cause accumulation of host‐specific soil microbes that influence seedling performance. To test whether conspecific seedling performance is reduced near seed‐producing female trees relative to male or heterospecific trees, we conducted shadehouse and field experiments with a dioecious tropical tree species, Virola surinamensis (<em>Myristicaceae</em>), on Barro Colorado Island, Panama. The shadehouse experiment isolated the effect of soil microbial communities on seedling growth and allowed us to quantify colonization by mutualistic arbuscular mycorrhizal (AM) fungi, while the field experiment allowed us to assess seedling survival and growth in the presence of nearby conspecific adults and seedlings. In both experiments, seedling performance was similar between seedlings grown in the soil microbial communities and field environments underneath female conspecific, male conspecific, and heterospecific trees. However, contrary to expectation, seedling colonization by AM fungi was higher in male conspecific soil microbial communities than in female or heterospecific soil microbial communities at the end of the shadehouse experiment. Together, our experiments show that while differences among female and male plants in dioecious species may influence the association of conspecific seedlings with AM fungi in their soils, this variation does not necessarily translate directly to differences in seedling performance, at least over the time frame of our experiments. Studies of additional dioecious species are needed to help determine differences in soil microbial communities beneath male and female plants and to assess the role of seed input versus adult root systems in driving PSFs.</p>
Figure 1. Adult female Maevia inclemens. 1-2, 6 in Stabilizing selection to maintain the two male forms of the jumping spider Maevia inclemens (Araneae: Salticidae: Marpissina), version 2
Figure 1. Adult female Maevia inclemens. 1-2, 6, Feeding on a small fly (Diptera: Brachycera). 3-4, Feeding on a small robber fly (Diptera: Ascilidae). With the exception of Figure 5:8, only three M. inclemens individuals, two males and one female, all photographed on plants in the laboratory, are shown in this paper. All were collected in Massachusetts, June 2020.
A 2-Period Crossover Study of BPN14770 in Adults Males With Fragile X Syndrome
ClinicalTrials.gov study NCT03569631. IPD Sharing: NO. Countries: 1. Publications: 2.
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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.