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34 results for “parental investment”
Data from: Condition-dependent begging elicits increased parental investment in a wild bird population
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Data from: Control of parental investment changes plastically over time with residual reproductive value
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Data from: Cross-fostering eggs reveals that female collared flycatchers adjust clutch sex ratios according to parental ability to invest in offspring
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Data from: Parental investment and body temperature explain encephalization in vertebrates
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Parental investment does not directly affect reproductive success in the Saffron Finch
<p>In tropical species, the study of parental care and the description of the intraspecific variation of parental care remain relatively understudied, especially when compared to the vast works dedicated to species from the northern hemisphere. In Colombia, the Saffron Finch (<i>Sicalis flaveola</i>), is a species with a wide geographical distribution, and despite its abundance in open habitats and urban environments, little is known about its reproductive ecology. As a small‐bodied, short‐lived passerine, we postulated that the Saffron Finch should behave according to the "reproductive value hypothesis,'' investing in the current brood at the expense of future survival. Consequently, we predicted: (1) that parental investment would be associated with brood size and (2) parental investment would be positively associated with nestling growth rate and reproductive success (defined as the number of nestlings which reached fledging age). In 2018, two reproductive peaks of <i>S. flaveola flaveola</i> were documented in the Meléndez campus of Universidad del Valle, Cali. Direct observations and video cameras (> 1700 hours of recording) were used to monitor the nests from 38 different breeding pairs. We found that feeding visits and the number of regurgitation events were positively related to brood size. In an experiment of simulated nest predation, 85% of breeding pairs responded to the stimulus and parents who exhibited highly responsive behaviours (50%) raised nestlings with a higher growth rate. We also found that egg surface area positively affected the number of incubation bouts per hour. Whilst no relationship was found between overall parental investment and reproductive success, our results appear to show that the intensity of parental investment during reproduction was modulated by brood size. Our findings suggest that there are multiple ecological factors that influence reproductive success in the Saffron Finch, and reinforce the need for longer term studies of tropical passerines.</p>
Data from: Sex differences in parental care: gametic investment, sexual selection and social environment
Male and female parents often provide different type and amount of care to their offspring. Three major drivers have been proposed to explain parental sex roles: (i) differential gametic investment by males and females that precipitates into sex difference in care, (ii) different intensity of sexual selection acting on males and females, and (iii) biased social environment that facilitates the more common sex to provide more care. Here we provide the most comprehensive assessment of these hypotheses using detailed parental care data from 792 bird species covering 126 families. We found no evidence for the gametic investment hypothesis: neither gamete sizes nor gamete production by males relative to females was related to sex difference in parental care. However, sexual selection correlated with parental sex roles, because the male share in care relative to female decreased with both extra-pair paternity and frequency of polygamy. Parental sex roles were also related to social environment, because male parental care increased with male-biased adult sex ratios. Taken together, our results are consistent with recent theories suggesting that gametic investment is not tied to parental sex roles, and highlight the importance of both sexual selection and adult sex ratios in influencing parental sex roles.
Data from: Differential allocation revisited: when should mate quality affect parental investment?
Differential allocation (DA) is the adaptive adjustment of reproductive investment (up or down) according to partner quality. A lack of theoretical treatments has led to some confusion in the interpretation of DA in the empirical literature. We present a formal framework for DA that highlights the nature of reproductive benefits versus costs for females mated to males of different quality. Contrary to popular belief, analytical and stochastic dynamic models both show that additive benefits of male quality on offspring fitness have no effect on optimal levels of female investment and thus cannot produce DA. Instead, if offspring fitness is affected multiplicatively by male quality, or male quality affects the female cost function, DA is expected because of changes in the marginal benefits or costs of extra investment. Additive male quality effects on the female cost function can cause a novel form of weak DA, because reduced costs can slightly favor current over future reproduction. Combinations of these distinct effects in more realistic model scenarios can explain various patterns of positive and negative DA reported for different species and mating systems. Our model therefore sheds new light on the diversity of empirical results by providing a strong conceptual framework for the differential allocation hypothesis.
Data from: Differential allocation of parental investment and the trade-off between size and number of offspring
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Parental investment does not directly affect reproductive success in the Saffron Finch
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Data from: Parental investment in a Tibetan population does not reflect stated cultural norms
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Data from: Sex differences in parental care: gametic investment, sexual selection and social environment
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Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland
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Data from: Differential allocation revisited: when should mate quality affect parental investment?
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Evaluation of the Invest in Play Program - a New Parent Intervention for Children With Problem Behavior
ClinicalTrials.gov study NCT06984809. IPD Sharing: YES. Countries: 1. Publications: 0.
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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.