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87 results for “reproductive output”
Data from: Flexibility in the duration of parental care: female leopards prioritise cub survival over reproductive output
1.Deciding when to terminate care of offspring is a key consideration for parents. Prolonging care may increase fitness of current offspring, but it can also reduce opportunities for future reproduction. Despite its evolutionary importance, few studies have explored the optimal duration of parental care, particularly among large carnivores. 2.We used a 40-year dataset to assess the trade-offs associated with the length of maternal care in leopards in the Sabi Sand Game Reserve, South Africa. We compared the costs imposed by care on the survival and residual reproductive value of leopard mothers against the benefits derived from maternal care in terms of increased offspring survival, recruitment and reproduction. We also examined the demographic and ecological factors affecting the duration of care in light of five explanatory hypotheses: litter-size, sex-allocation, resource-limitation, timing-of-independence, and terminal-investment. 3.Duration of care exhibited by female leopards varied markedly, from 9–35 months. Mothers did not appear to suffer any short- or long-term survival costs from caring for cubs, but extending care reduced the number of litters that mothers could produce during their lifetimes. Interestingly, the duration of care did not appear to affect the post-independence survival or reproductive success of offspring (although it may have indirectly affected offspring survival by influencing dispersal distance). However, results from generalised linear mixed models showed that mothers prolonged care during periods of prey scarcity, supporting the resource-limitation hypothesis. Female leopards also cared for sons longer than daughters, in line with the sex-allocation hypothesis. 4.Cub survival is an important determinant of the lifetime reproductive success in leopards. By buffering offspring against environmental perturbation without jeopardizing their own survivorship, female leopards apparently 'hedge their bets' with current offspring rather than gamble on future offspring which have a small probability of surviving. 5.In many species, parents put their own needs before that of their offspring. Leopard mothers appear sensitive to their offspring's demands, and adjust levels of care accordingly.
Data from: Male breeding experience, not mate familiarity, affects reproductive output in black brant geese
Individuals in species with long-term social monogamy often incur fitness costs after mate change. We evaluated the relative contributions of mate familiarity and male breeding experience to the costs of mate change of female black brant geese (Branta bernicla nigricans). We assessed the effects of mate change on relative nest initiation date, clutch size, brood size at hatch, growth rates of goslings, and prefledging survival of offspring. We modeled variation in relative nest initiation dates, clutch size, initial brood size, and gosling growth rates using generalized linear mixed models in Program R. We estimated prefledging survival with Cormack–Jolly–Seber models in Program MARK using reencounters of webtagged goslings. Mate change had a small effect on relative nest initiation date, clutch size, and initial brood size, but no effect on growth rates of brant goslings. Females breeding with an unfamiliar, but experienced male had goslings with higher prefledging survival rates (ϕ = 0.44±0.11 [95% confidence interval]) than those breeding with a familiar, experienced mate (ϕ = 0.30±0.04). However, females that changed mates and re-paired with an inexperienced male had goslings with substantially lower prefledging survival rates (ϕ = 0.20±0.04) than any other group of females. Our findings indicate that reproductive output by female brant is affected by male experience rather than mate familiarity. We believe that female brant typically benefit from mate retention because most will not acquire an experienced partner after mate change.
Data from: Piping Plover population increase after Hurricane Sandy mediated by immigration and reproductive output
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Data from: Flexibility in the duration of parental care: female leopards prioritise cub survival over reproductive output
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Data from: Parental sublethal insecticide exposure prolongs mating response and decreases reproductive output in offspring
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Data from: Male breeding experience, not mate familiarity, affects reproductive output in black brant geese
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Figure 4 in Sex change and reproductive output of the protandric shrimp Merguia rhizophorae (Rathbun, 1900) (Decapoda, Merguiidae)
Figure 4. Reproductive output in Merguia rhizophorae (Rathbun 1900). (a) Mean (± SD) (vertical bars) of fecundity in shrimps carrying embryos in Stages I, II, and III of development; (b) Relationship between the number of embryos and carapace length (CL, mm) of female phase shrimps; (c) Mean (± SD) (vertical bars) of embryo volume in shrimps carrying embryos in Stages I, II, and III of development; (d) Relationship between the embryo volume (mm3) and carapace length (CL, mm) of female phase shrimps. In (a) and (c), different letters indicate significant differences between embryo development stages. In (b) and (d), linear regression equations obtained after log–log transformation of the data are shown. In (b), Stages I and II of the development represent a single straight line since the mean of fecundity among these stages did not show significant difference.
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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.