Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
131
datasets available to search
ShareScore release 0.9.0
Dataset results
131 results for “molting”
Data from: Getting ready for the winter: timing and determinants of molt in an alpine ungulate
Because growth of new hairs entails energetic costs, individual condition and access to food should determine the timing of molt. Previous studies on the timing of molt in ungulates have mostly focused on the influence of age-class and reproductive status, but the effects of body condition and environmental phenology have not been evaluated. Our goal was to assess how intrinsic traits and environmental conditions determine the timing of winter coat shedding in a mountain goat population monitored for 27 years. The date of molt completion followed a U-shape with age, suggesting that senescence occurs in terms of the molting process in mountain goats. Juveniles of both sexes delayed molting in a similar fashion, but molt timing differed between sexes during adulthood. Males molted progressively earlier until reaching age when reproduction peaked, after which they started delaying molting again. Females reached earliest molt dates at age of first reproduction and then progressively delayed molt date. Lactating females molted 10 days later than barren females on average, but this only occurred in females in good condition. Thus, although it has been shown that reproduction delays molt in ungulates, our results indicate that body condition can override this effect. Overall, our results revealed that access to both extrinsic and intrinsic resources is one of the key mechanisms driving molting processes in a mammalian herbivore.
FIGURES 52–59. C. janeirica, pupa. 52. After molting, dorsal view. 53. Idem, lateral view. 54. After 24 hours, dorsal view. 55. Idem, lateral view. 56 in Immature stages of Calycopis bellera (Hewitson) and C. janeirica (Felder) (Lepidoptera, Lycaenidae, Theclinae, Eumaeini): Taxonomic significance and new evidence for detritivory
FIGURES 52–59. C. janeirica, pupa. 52. After molting, dorsal view. 53. Idem, lateral view. 54. After 24 hours, dorsal view. 55. Idem, lateral view. 56. At middle of pupal stage (specimen with few dark brown maculae), dorsal view. 57. Idem, lateral view. 58. Idem, ventral view (it is already possible to see the imago's eyes). 59. At end of pupal stage (one day after of this picture adult emerged), ventral view.
FIGURES 13–18. C. bellera, pupa. 13. Immediately after molting, dorsal view. 14. After two hours, dorsal view. 15. After 24 hours, dorsal view. 16. Darkened individual, dorsal view. 17. Idem, lateral view. 18 in Immature stages of Calycopis bellera (Hewitson) and C. janeirica (Felder) (Lepidoptera, Lycaenidae, Theclinae, Eumaeini): Taxonomic significance and new evidence for detritivory
FIGURES 13–18. C. bellera, pupa. 13. Immediately after molting, dorsal view. 14. After two hours, dorsal view. 15. After 24 hours, dorsal view. 16. Darkened individual, dorsal view. 17. Idem, lateral view. 18. Idem, ventral view.
Data from: Sexual selection, feather wear, and time constraints on the pre-basic molt explain the acquisition of the pre-alternate molt in European passerines
<p><span>Avian feathers need to be replaced periodically to fulfill their functions, with natural, social, and sexual selection presumably driving the evolution of molting strategies. In temperate birds, a common pattern is to molt feathers immediately after the breeding season, the pre-basic molt. However, some species undergo another molt in winter-spring, the pre-alternate molt. Using a sample of 188 European passerine species, Bayesian phylogenetic mixed models, and correlated evolution analyses, we tested whether the occurrence of the pre-alternate molt was positively associated with proxies for sexual selection (sexual selection hypothesis) and non-sexual social selection (social selection hypothesis) and with factors related to feather wear (feather wear hypothesis) and time constraints on the pre-basic molt (time constraints hypothesis). We found that the pre-alternate molt was more frequent in migratory and less gregarious species inhabiting open/xeric habitats and feeding on the wing, and marginally more frequent in species with strong sexual selection and those showing a winter territorial behavior. Moreover, an increase in migratory behavior and sexual selection intensity preceded the acquisition of the pre-alternate molt. These results provide support for the feather wear hypothesis, partial support for the sexual selection and time constraints hypotheses, and no support for the social selection hypothesis.</span></p>
FIGURE 1. A–K, Bairdoppilata alcyonicola Maddocks. A–E, molting juvenile specimen 523J in Taxonomic applications of the esophageal flapper valve in Bairdoppilata and Glyptobairdia (Bairdiidae, Ostracoda), with comments on anatomy, ontogeny, and geography
FIGURE 1. A–K, Bairdoppilata alcyonicola Maddocks. A–E, molting juvenile specimen 523J: A, RV exterior, showing puncta, sensilla, NPC, inner margin, weakly calcified proximal zone of inner lamella, narrow infold, and marginal frills; ventral edge is damaged; B, posterior caudal angle of RV exterior, showing inner margin, weakly calcified inner lamella, narrow infold, marginal sensilla, and frill; C, anterior margin of RV exterior, with inner margin, weakly calcified inner lamella, infold, marginal sensilla, and frill; D, A2 distal claws, molting; E, zygum and both furcae. F–H, molting juvenile specimen 524J: F, A2 distal claws, molting; G, plate of EV, with uniform row of teeth; H, LV exterior, molting; folded sensilla of new valve are visible beneath old valve. I–K, molting juvenile specimen 168J: I–J, RV and LV exteriors, showing inner margin, broad but weakly calcified inner lamella with continuous vestibules, narrow infold, and characteristic patch pattern; anterodorsal edge of LV is damaged; K, exterior view of posteroventral edge of LV, showing sensilla of new valve folded chevron-style within vestibule of instar. L–Q, Bairdoppilata cratericola Maddocks. O–P, juvenile specimen 973J: L, A2 claws; M, plate of EV. N–Q, adult female specimen 972F: N, genital lobe and spermatophore; O, RV exterior, with low focus to show broad infold, well calcified inner lamella, shallow, separate vestibules, and marginal frills; P, LV exterior, high focus to show puncta, NPC, MSP, and patch pattern; Q, A2 distal claws. Scale bar = 50 µm.
Figures 5-8 in Observations on the behavior of male and female Paraphidippus aurantius at the molting sac of a female (Araneae: Salticidae: Dendryphantina)
Figures 5-8. Interaction of two male P. aurantius at the molting sac of a female.
Gene expression data from qPCR analysis of molting relevant genes in Calanus finmarchicus utilizing double delta-Ct method
<p>Gene expression data from qPCR analysis of molting relevant genes in Calanus finmarchicus utilizing double delta-Ct method for calculations of fold change and mean fold change. </p>
Host species traits rather than migration and molting strategies explain feather bacterial load in Palearctic passerines
Open the record for dataset details and reuse information.
Data for: Lower survival of hybrid grosbeaks, but not towhees, suggests a molt divide disfavors hybrids
<p>Although avian hybrid zones in the Great Plains have been studied for almost 70 years, we know surprisingly little about the fitness costs for hybrids that keep these zones narrow. We compare age ratios in grosbeaks (<em>Pheucticus ludovicianus</em> and <em>P. melanocephalus</em>) and towhees (<em>Pipilo erythropthalums</em> and <em>P. maculatus</em>), two species pairs that differ in their life-histories and molt schedules, to evaluate survival between hybrids and parentals. We then contrast molt and migratory divides as possible sources of selection against hybrids. Hybrid grosbeaks had 27-33% lower survival relative to their parentals, whereas hybrid towhees had survival rates similar to parentals. Age ratio data for hybrid grosbeaks suggest high mortality in older birds, as expected if selection operates after the first year of life. This pattern is consistent with parental species of grosbeaks having contrasting molt schedules relative to migration, suggesting high mortality costs to hybrids driven by molt biology, which are expressed later in life. Contrasts in molt schedules are absent in towhees. While migratory divides may exist for towhees and grosbeaks, the low adult survival of hybrid grosbeaks suggests that molt may be an important and underappreciated source of selection maintaining this and other narrow avian hybrid zones.</p>
No evidence for an adaptive role of early molt into breeding plumage in a female fairy-wren
Open the record for dataset details and reuse information.
Data from: Local weather and body condition influence habitat use and movements on land of molting female southern elephant seals (Mirounga leonina)
Open the record for dataset details and reuse information.
Data from: Getting ready for the winter: timing and determinants of molt in an alpine ungulate
Open the record for dataset details and reuse information.
High-intensity flight feather molt and comparative molt ecology of warblers of eastern North America
Open the record for dataset details and reuse information.
Data from: Winter food limits timing of pre-alternate molt in a short-distance migratory bird
Open the record for dataset details and reuse information.
Data from: Extra molting and selection on nymphal growth in the desert locust
Open the record for dataset details and reuse information.
Data from: Molt and body measurements for Gray Hawks in the Lower Rio Grande Valley of Texas
Open the record for dataset details and reuse information.
Data for: Lower survival of hybrid grosbeaks, but not towhees, suggests a molt divide disfavors hybrids
Open the record for dataset details and reuse information.
Data from: Sexual selection, feather wear, and time constraints on the pre-basic molt explain the acquisition of the pre-alternate molt in European passerines
Open the record for dataset details and reuse information.
Data from: Rising temperatures, molting phenology and epizootic shell disease in the American lobster
Open the record for dataset details and reuse information.
Data from: No fitness benefits of early molt in a fairy-wren: relaxed sexual selection under genetic monogamy?
The evolution of male ornamentation has long been the focus of sexual selection studies. However, evidence is accumulating that sexually selected traits can also be lost, although the process is ill-understood. In male fairy-wrens (Malurus spp.), early molt into the seasonal breeding plumage is critical for obtaining extra-pair paternity (EPP), which reaches very high levels in these socially monogamous songbirds. A notable exception is the purple-crowned fairy-wren, Malurus coronatus, which, like its congeners, breeds cooperatively, but where EPP is very rare. Nevertheless, males develop a conspicuous seasonal breeding plumage at highly variable times. Based on 6 years of molt data collected for 137 individuals, we investigated the adaptive significance of pre-breeding molt timing as a sexual signal under (near) genetic monogamy. Molt timing varied between and within individuals with age and climate: molt was completed earlier in older males and after wetter years. Despite its potential to act as a sexual signal of male quality, fitness benefits and costs of early molt appear limited: molt timing did not correlate with 1) the likelihood of gaining a breeding position; 2) female mate preference (EPP/cuckoldry, divorce); 3) female reproductive investment (breeding timing, clutch size, number of clutches); 4) breeding performance (hatching success, fledging success, fledgling survival, annual reproductive success); and 5) male survival. However, although molt timing did not predict which subordinates would become breeders, breeders molted earlier than subordinates. The lack of EPP in this species might imply relaxed sexual selection on early molt with potential to lead to trait disappearance.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.