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86 results for “sex-specific effects”
Data from: Social effects on age-related and sex-specific immune cell profiles in a wild mammal
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Data from: Sex-specific effects of fisheries and climate on the demography of sexually dimorphic seabirds
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Data from: Sex-specific fitness effects of unpredictable early life conditions are associated with DNA methylation in the avian glucocorticoid receptor
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Separating the effects of paternal age and mating history: evidence for sex-specific paternal effect in eastern mosquitofish
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Data from: Differential effects of maternal yolk androgens on male and female offspring: a role for sex-specific selection?
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Data from: Intensity of space use reveals conditional sex-specific effects of prey and conspecific density on home range size
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Data from: Sex-specific pathways of parental age effects on offspring lifetime reproductive success in a long-lived seabird
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Data from: Sex-specific effects of outbreeding on offspring quality in pike (Esox lucius)
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Data from: Sex-specific effects of early-life adversity on adult fitness in a wild mammal
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Data from: Postzygotic isolation involves strong mitochondrial and sex-specific effects in Tigriopus californicus, a species lacking heteromorphic sex chromosomes
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Sex-specific transgenerational plasticity II: Grandpaternal effects are lineage- and sex-specific in threespined sticklebacks
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Sex-specific effects of cooperative breeding and colonial nesting on prosociality in corvids
<p>The investigation of prosocial behavior is of particular interest from an evolutionary perspective. Comparisons of prosociality across non-human animal species have, however, so far largely focused on primates, and their interpretation is hampered by the diversity of paradigms and procedures used. Here we present the first systematic comparison of prosocial behavior across multiple species in a taxonomic group outside the primate order, namely the bird family Corvidae. We measured prosociality in 8 corvid species, which vary in the expression of cooperative breeding and colonial nesting. We show that cooperative breeding is positively associated with prosocial behavior across species. Also colonial nesting is associated with a stronger propensity for prosocial behavior, but only in males. The combined results of our study strongly suggest that both cooperative breeding and colonial nesting, which may both rely on heightened social tolerance at the nest, are likely evolutionary pathways to prosocial behavior in corvids.</p>
Data from: Sex-specific selection on plant architecture through 'budget' and 'direct' effects in experimental populations of a wind-pollinated herb
Sexual selection may contribute to the evolution of plant sexual dimorphism by favoring architecture traits that improve pollen dispersal to mates in males. In both sexes, larger individuals may be favored if large size allows the allocation of more resources to gamete production (a 'budget' effect of size). In wind-pollinated plants, large size may also benefit males if it allows them to liberate pollen from greater heights, fostering its dispersal (a 'direct' effect of size). To assess these effects and their implications for trait selection, we measured selection gradients on plant morphology in both males and females, as well as pollen production and dispersal in males, of the wind-pollinated dioecious herb Mercurialis annua. In two separate experimental common gardens established at different densities, selection strongly favored plants dispersing their pollen further. Selection for pollen production was observed in the high-density garden only and was weak. In addition, male morphologies associated with increased mean pollen dispersal differed between the two gardens as elongated branches were favored in the high-density garden while shorter plants with longer peduncles bearing inflorescences were advantaged the low-density garden. Larger females were selected in both gardens. Our results point to the importance of selection on male traits that affect pollen dispersal, and to a lesser extent pollen production.
Data from: Perinatal lead (Pb) exposure results in sex-specific effects on food intake, fat, weight, and insulin response across the murine life-course
Developmental lead (Pb) exposure has been associated with lower body weight in human infants and late onset obesity in mice. We determined the association of perinatal Pb exposure in mice with changes in obesity-related phenotypes into adulthood. Mice underwent exposure via maternal drinking water supplemented with 0 (control), 2.1 (low), 16 (medium), or 32 (high) ppm Pb-acetate two weeks prior to mating through lactation. Offspring were phenotyped at ages 3, 6, and 9 months for energy expenditure, spontaneous activity, food intake, body weight, body composition, and at age 10 months for glucose tolerance. Data analyses were stratified by sex and adjusted for litter effects. Exposed females and males exhibited increased energy expenditure as compared to controls (p<0.0001 for both). In females, horizontal activity differed significantly from controls (p = 0.02) over the life-course. Overall, food intake increased in exposed females and males (p<0.0008 and p<0.0001, respectively) with significant linear trends at 9 months in females (p = 0.01) and 6 months in males (p<0.01). Body weight was significantly increased in males at the medium and high exposures (p = 0.001 and p = 0.006). Total body fat differed among exposed females and males (p<0.0001 and p<0.0001, respectively). Insulin response was significantly increased in medium exposure males (p<0.05). Perinatal Pb exposure at blood lead levels between 4.1 µg/dL and 32 µg/dL is associated with increased food intake, body weight, total body fat, energy expenditure, activity, and insulin response in mice. Physiological effects of developmental Pb exposure persist and vary according to sex and age.
Data from: Sex-specific maternal effects in a viviparous fish
Mothers vary in their effects on their offspring, but studies of variation in maternal effects rarely ask whether differences between mothers are consistent for sons and daughters. Here, we analysed maternal effects in the mosquitofish Gambusia holbrooki for development time and adult size of sons and daughters, and a primary male sexual character (gonopodium length). We found substantial maternal effects on all traits, most notably for gonopodium length. There were significant correlations within each sex for maternal effects on different traits, indicative of trade-offs between development rate and adult size. By contrast, there was no evidence of any consistency in maternal effects on sons and daughters. This suggests that the evolution of maternal effects will follow independent trajectories dependent on sex-specific selection on offspring. Importantly, failure to recognize the sex-specific nature of maternal effects in this population would have substantially underestimated the extent of their variation between mothers.
Data from: When males outlive females: sex-specific effects of temperature on lifespan in a cyclic parthenogen
Lifespans of males and females frequently differ as a consequence of different life history strategies adopted to maximize fitness. It is well visible in cyclic parthenogens, such as water fleas of the genus Daphnia, where males appear in the population usually only for periods when receptive females are available. Moreover, even within one sex, different life history strategies and mechanisms regulating lifespan may exist. Previous studies suggested that Daphnia males may regulate their lifespan by staying in colder waters than females. We hypothesize that such behavioural mechanism should be associated with stronger reaction to low temperature that is greater lifespan extension in males than in females. In this study, we monitored survivorship of Daphnia magna females and males of three clonal lines cultured at 16 or 20°C. The results did not provide a species-level corroboration of our hypothesis, instead, they revealed very strong intraspecific differences in the responses of male and female lifespan to temperature change. They further suggest the existence of parallel life history strategies, hypotheses whose tests would bring new insights into the ecology of males in cyclic parthenogens.
Data from: Sex-specific effects of inbreeding on reproductive senescence
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Data from: Sex-specific effects of natural and sexual selection on the evolution of life span and ageing in Drosophila simulans
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Data from: Sex-specific selection on plant architecture through 'budget' and 'direct' effects in experimental populations of a wind-pollinated herb
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Data from: Perinatal lead (Pb) exposure results in sex-specific effects on food intake, fat, weight, and insulin response across the murine life-course
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Allen Brain Atlas
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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.