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55 results for “Sexual behaviour”
FIGURE 54. Carrying behaviour among palicid crabs. A in Significance of the sexual openings and supplementary structures on the phylogeny of brachyuran crabs (Crustacea, Decapoda, Brachyura), with new nomina for higher-ranked podotreme taxa
FIGURE 54. Carrying behaviour among palicid crabs. A, Exopalicus maculatus (Edmondson, 1930) carrying a foraminiferan shell (Marginopora sp.): both P5 visible, with dactyli holding camouflaging shell. B, C, Palicoides whitei (Miers, 1884): B, carrying fragment of coral rubble: dactyli of both P5 only slightly visible; C, carrying small pebble: clearly visible right P5. A, B in situ, C in aquarium, Okinawa, Japan. Photographs by Y. Fujita.
Sex differences in the behavioural traits across ontogenetic stages in a sexually-size dimorphic spider
<p>Data collected on males and females of the spider species <em>Dolomedes fimbriatus</em>. Behavioural biology, the relationship of sex, age and body mass to voracity, boldness and propensity to attack a simulated attacker throughout ontogeny.</p> <p>ID = individual code</p> <p>Gender = 0 - female; 1 - male</p> <p>Stage = 1 - juvenile; 2 - sub-adult; 3 - adult</p> <p>Repeat = the sequence number of the experiment repetition</p> <p>Boldess = Score for boldness experiments (0 - bold; 5 - shy)</p> <p>Voracity = Score for voracity experiment (0 - did not take a fly; 1 - took a fly)</p> <p>Attack = Score for propensity to attack simulated prefator (0 - did not attack; 1- attacked)</p> <p>Mass = Specimens body mass at the time of experiment in grams</p> <p>Age = Specimens age at the time of experiment in days before (negative) and after (positive) final molt</p> <p>Difference in masa = The difference in body mass between consecutive experiments for a specimen </p> <p>Difference in age = The difference in age between consecutive experiments for a specimen</p> <p>Difference Boldness = The difference in boldness scores between consecutive experiments for a specimen</p> <p>Absolute Difference Boldness = The absolute difference in boldness scores between consecutive experiments for a specimen </p> <p>Difference Voracity = The difference in voracity scores between consecutive experiments for a specimen </p> <p>Absolute Difference Voracity = The absolute difference in voracity scores between consecutive experiments for a specimen </p> <p>Difference Attack = The difference in attack scores between consecutive experiments for a specimen</p> <p>Absolute Difference Attack = The absolute difference in attack scores between consecutive experiments for a specimen</p>
Cognitive-Behavioural & Mindfulness-Based Online Programs for Female Sexual Dysfunction
ClinicalTrials.gov study NCT05168371. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Cultural Adaptation, Validation, and Evaluation of the Programme for Promotion of Healthy Affective-Sexual Behaviours in Adolescents (IYG)
ClinicalTrials.gov study NCT07208045. IPD Sharing: YES. Countries: 1. Publications: 20.
Cognitive Behavioural Therapy for Sexual Concerns During Perimenopause
ClinicalTrials.gov study NCT04922385. IPD Sharing: NO. Countries: 1. Publications: 2.
A Randomized Online Health Experiment for a Safer Youth Sexual Behaviour
ClinicalTrials.gov study NCT02128620. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Investigation of the Sociodemographic Characteristics and Sexual Health Behaviours of University Students
ClinicalTrials.gov study NCT05280834. IPD Sharing: NO. Countries: 1. Publications: 1.
Behavioural Skills Training (BST) for Teaching Sexual Abuse Prevention Skills for Children with Intellectual Disabilities
ClinicalTrials.gov study NCT06732479. IPD Sharing: NO. Countries: 0. Publications: 2.
Cognitive-Behavioural Couple Therapy for Sexual Interest/Arousal Disorder
ClinicalTrials.gov study NCT06777277. IPD Sharing: NO. Countries: 1. Publications: 0.
Study of Health-risk Behaviours (Tobacco, Alcohol or Drug Consumption ; Nutrition ; Sedentary Lifestyle ; Sexual Practices) Among Cancer Survivors
ClinicalTrials.gov study NCT06215365. IPD Sharing: NO. Countries: 1. Publications: 0.
Data from: An experimental evaluation of traits that influence the sexual behaviour of pollinators in sexually deceptive orchids
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Data associated to: A bioenergetics approach to understanding sex differences in the foraging behaviour of a sexually monomorphic species
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Code for: Same-sex sexual behaviour and selection for indiscriminate mating
<p>File provides Mathematica code to replicate the analyses of "Same-sex sexual behaviour and selection for indiscriminate mating" by Lerch and Servedio. All figures from the manuscript (and its supplement) can be obtained by running the code. Comments for the code is provided for the "Additive death" section with other sections presented in parallel.</p>
Data from: A test of genetic models for the evolutionary maintenance of same-sex sexual behaviour
The evolutionary maintenance of same-sex sexual behaviour (SSB) has received increasing attention because it is perceived to be an evolutionary paradox. The genetic basis of SSB is almost wholly unknown in non-human animals, though this is key to understanding its persistence. Recent theoretical work has yielded broadly applicable predictions centred on two genetic models for SSB: overdominance and sexual antagonism. Using Drosophila melanogaster, we assayed natural genetic variation for male SSB and empirically tested predictions about the mode of inheritance and fitness consequences of alleles influencing its expression. We screened 50 inbred lines derived from a wild population for male–male courtship and copulation behaviour, and examined crosses between the lines for evidence of overdominance and antagonistic fecundity selection. Consistent variation among lines revealed heritable genetic variation for SSB, but the nature of the genetic variation was complex. Phenotypic and fitness variation was consistent with expectations under overdominance, although predictions of the sexual antagonism model were also supported. We found an unexpected and strong paternal effect on the expression of SSB, suggesting possible Y-linkage of the trait. Our results inform evolutionary genetic mechanisms that might maintain low but persistently observed levels of male SSB in D. melanogaster, but highlight a need for broader taxonomic representation in studies of its evolutionary causes.
Data from: Indirect genetic effects and sexual conflicts: Partner genotype influences multiple morphological and behavioural reproductive traits in a flatworm
The expression of an individual's phenotypic traits can be influenced by genes expressed in its social partners. Theoretical models predict that such indirect genetic effects (IGEs) on reproductive traits should play an important role in determining the evolutionary outcome of sexual conflict. However, empirical tests of (i) whether reproductive IGEs exist, (ii) how they vary among genotypes, and (iii) whether they are uniform for different types of reproductive traits are largely lacking. We addressed this in a series of experiments in the simultaneously hermaphroditic flatworm Macrostomum lignano. We found strong evidence for IGEs on both morphological and behavioural reproductive traits. Partner genotype had a significant impact on the testis size of focal individuals—varying up to 2.4-fold—suggesting that IGEs could mediate sexual conflicts that target the male sex function. We also found that time to first copulation was affected by a genotype × genotype interaction between mating partners, and that partner genotype affected the propensity to copulate and perform the postcopulatory suck behaviour, which may mediate conflicts over the fate of received ejaculate components. These findings provide clear empirical evidence for IGEs on multiple behavioural and morphological reproductive traits, which suggests that the evolutionary dynamics of these traits could be altered by genes contained in the social environment.
Data from: Behavioural mechanisms of sexual isolation involving multiple modalities and their inheritance
Speciation research dissects the genetics and evolution of reproductive barriers between parental species. Hybrids are the 'gatekeepers' of gene flow, so it is also important to understand the behavioural mechanisms and genetics of any potential isolation from their parental species. We tested the role of multiple behavioural barriers in reproductive isolation among closely related field crickets and their hybrids (Teleogryllus oceanicus and T. commodus). These species hybridise in the laboratory, but the behaviour of hybrids is unusual and there is little evidence for gene flow in the wild. We found that heterospecific pairs exhibited reduced rates of courtship behaviour due to discrimination by both sexes, and that this behavioural isolation was symmetrical. However, hybrids were not sexually selected against and exhibited high rates of courtship behaviour even though hybrid females are sterile. Using reciprocal hybrid crosses, we characterized patterns of interspecific divergence and inheritance in key sexual traits that might underlie the mating patterns we found: calling song, courtship song and cuticular hydrocarbons (CHCs). Song traits exhibited both sex-linkage and transgressive segregation, whereas CHCs exhibited only the latter. Calculations of the strength of isolation exerted by these sexual traits suggest that close-range signals are as important as long-distance signals in contributing to interspecific sexual isolation. The surprisingly weak mating barriers observed between hybrids and parental species highlights the need to examine reproductive isolating mechanisms and their genetic bases across different potential stages of introgressive hybridisation.
Effects of sexual dimorphism on pollinator behaviour in a dioecious species
<p><span><span>Floral traits often display sexual dimorphism in insect-pollinated dioecious plant species, with male individuals typically being showier than females. While this strategy is theorized to be optimal when pollinators are abundant, it might represent a risk when they become scarce, because the disproportionately high number of visits on the most attractive sex, males, might preclude efficient pollen transfer from males to females. Here, the effect of sexual dimorphism on pollination efficiency was assessed in experimental arrays of dioecious <i>Silene dioica</i> that were exposed to one frequent visitor of the species, <i>Bombus terrestris</i>, and that differed in the magnitude of sexual dimorphism for either flower number or flower size. We measured the number of visits on female plants, on female flowers and on the number of female flowers visited after a male flower, as well as the number of pollen grains deposited per stigma.</span></span></p>
Don't judge a lizard by its colour: no evidence for differential socio-sexual behaviour and space use in the colour morphs of the European common wall lizard (Podarcis muralis)
Explaining the evolutionary origin and maintenance of colour polymorphisms is a major challenge in evolutionary biology. Such polymorphisms are commonly thought to reflect the existence of alternative behavioural or life-history strategies under negative frequency-dependent selection. The European common wall lizard Podarcis muralis exhibits a striking ventral colour polymorphism that has been intensely studied and is often assumed to reflect alternative reproductive strategies, similar to the iconic "rock-paper-scissors" system described in the North American lizard Uta stansburiana. However, available studies so far have ignored central aspects in the behavioural ecology of this species that are crucial to assess the existence of alternative reproductive strategies. Here we try to fill this gap by studying the social behaviour, space use, and reproductive performance of lizards showing different colour morphs, both in a free-ranging population from the eastern Pyrenees and in ten experimental mesocosm enclosures. In the natural population, we found no differences between morphs in site-fidelity, space use or male-female spatial overlap. Likewise, colour morph was irrelevant to socio-sexual behaviour, space use, and reproductive success within experimental enclosures. Our results contradict the commonly held hypothesis that P. muralis morphs reflect alternative behavioural strategies, and suggest that we should instead turn our attention to alternative functional explanations.
Construction of a Risky Sexual Behaviour Intervention Programme for College Students Based on BCW Theory
ClinicalTrials.gov study NCT06435234. IPD Sharing: NO. Countries: 1. Publications: 0.
Data from: Modelling verbal aggression, physical aggression and inappropriate sexual behaviour after brain injury
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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.
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