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33 results for “parturition”
FIGURE 1 in Parturition time for the Blacktip shark, Carcharhinus limbatus (Carcharhiniformes: Carcharhinidae), in Southwestern Atlantic
FIGURE 1 | Map displaying the locations in Southwestern Atlantic where the individuals of the Blacktip Shark, Carcharhinus limbatus, were sampled. Black squares: present study; gray square: Bornatowski (2008). Abbreviations: CE, Ceará; RN, Rio Grande do Norte; SE, Sergipe; PR, Paraná.
The oxytocin-prostaglandins pathways in the horse (Equus caballus) placenta during pregnancy, physiological parturition, and parturition with fetal membrane retention
<p>Despite their importance in mammalian reproduction, substances in the oxytocin-prostaglandins pathways have not been investigated in the horse placenta during most of pregnancy and parturition. Therefore, we quantified placental content of oxytocin (OXT), oxytocin receptor (OXTR), and prostaglandin E2 and F2 alpha during days 90–240 of pregnancy (PREG), physiological parturition (PHYS), and parturition with fetal membrane retention (FMR) in heavy draft horses (PREG = 13, PHYS = 11, FMR = 10). We also quantified <i>OXTR</i> and<i> </i>prostaglandin endoperoxide synthase-2 (<i>PTGS2</i>) mRNA expression and determined the immunolocalization of OXT, OXTR, and PTGS2. For relative quantification of OXT and OXTR, we used western blotting with densitometry. To quantify the prostaglandins, we used enzyme immunoassays. For relative quantification of <i>OXTR</i> and <i>PTGS2</i>, we used RT-qPCR. For immunolocalization of OXT, OXTR, and PTGS2, we used immunohistochemistry. We found that OXT was present in cells of the allantochorion and endometrium in all groups. <i>PTGS2</i> expression in the allantochorion was 14.7-fold lower in FMR than in PHYS (<i>p</i> = 0.007). These results suggest that OXT is synthesized in the horse placenta. As PTGS2 synthesis is induced by inflammation, they also suggest that FMR in heavy draft horses may be associated with dysregulation of inflammatory processes.</p>
Parturition date of roe deer in Baden-Württemberg (Southern Germany) 1972/2019
<p>The table contains information about each parturition date. The columns read as: 1) the year were the offspring was born, 2) the sex of the offspring (m- male, f – female), 3) the height above sea level (m), 4) the parturition date (Julian date)<br> <br> Data of the table was used/published in the following article/manuscript: Hagen, Robert; Ortmann, Sylvia; Elliger, Andreas; Arnold, Janosch, <strong>Advanced roe deer (Capreolus capreolus) parturition date in response to climate change</strong></p>
Data for: Compensating for a stressful pregnancy? Glucocorticoid treatment during gravidity reduces metabolic rate in female fence lizards post-parturition (In press: Hormones and Behavior)
<p>This dataset accompanies the paper "Compensating for a stressful pregnancy? Glucocorticoid treatment during gravidity reduces metabolic rate in female fence lizards post-parturition" (In press: Hormones and Behavior). A READ_ME/metadata explanation is available in Sheet 1. Address any queries to Dr. K. MacLeod, kirstyjmacleod@gmail.com.</p> <p>Abstract: Reproduction is a critical part of an animal’s life history, but one which incurs significant costs to survival and future reproductive potential. These physiological consequences are likely to be influenced by context – for example, if an individual is subject to environmental stressors, physiological and behavioral changes associated with reproduction may be altered. Glucocorticoids, hormones produced as part of the physiological response to stressors, may alter how reproduction affects female physiology and behavior, and therefore the outcomes of reproductive trade-offs. Glucocorticoids prioritize immediate survival over reproduction, for example through changes in immune function, metabolic rate, and foraging, which may reduce energy expenditure or increase energy gain. However, we previously found that female eastern fence lizards (<em>Sceloporus undulatus</em>) experiencing elevated glucocorticoid levels during gestation were nevertheless able to maintain reproductive output and body condition. Here we investigate compensatory mechanisms by which eastern fence lizard females may maintain reproduction under experimental increases in a glucocorticoid, corticosterone (CORT). We found that, although CORT-treated females had similar immune function and behavior, they had reduced metabolic rates 3-5 days post-parturition compared to control females. Given that CORT-treated females spent a similar time basking and had equal food intake compared to control females, we suggest that the reduced metabolic rate is a mechanism by which CORT-treated females maintain their energy balance and reduce the energetic costs of gestation during periods of stress. This study suggests that physiological responses to reproduction may be context-dependent and could act to minimize costs of reproduction in situations where CORT is elevated (such as during periods of environmental stress). </p>
Neurophysiology of Postpartum Depression in an Experimental Model of Pregnancy and Parturition
ClinicalTrials.gov study NCT01762943. IPD Sharing: NO. Countries: 1. Publications: 3.
The oxytocin-prostaglandins pathways in the horse (Equus caballus) placenta during pregnancy, physiological parturition, and parturition with fetal membrane retention
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Data from: Two decades of genetic profiling yields first evidence of natal philopatry and long-term fidelity to parturition sites in sharks
Sharks are a globally threatened group of marine fishes that often breed in their natal region of origin. There has even been speculation that female sharks return to their exact birthplace to breed ("natal philopatry"), which would have important conservation implications. Genetic profiling of lemon sharks (Negaprion brevirostris) from 20 consecutive cohorts (1993-2012) at Bimini, Bahamas showed that certain females faithfully gave birth at this site for nearly two decades. At least six females born in the 1993-1997 cohorts returned to give birth 14-17 years later, providing the first direct evidence of natal philopatry in the chondrichthyans. Long-term fidelity to specific nursery sites coupled with natal philopatry highlights the merits of emerging spatial and local conservation efforts for these threatened predators.
Data from: Discovery of a multi-species shark aggregation and parturition area in the Ba Estuary, Fiji Islands
Population declines in shark species have been reported on local and global scales, with overfishing, habitat destruction and climate change posing severe threats. The lack of species-specific baseline data on ecology and distribution of many sharks, however, makes conservation measures challenging. Here we present a fisheries-independent shark survey from the Fiji Islands, where scientific knowledge on locally occurring elasmobranchs is largely still lacking despite the location's role as a shark hotspot in the Pacific. Juvenile shark abundance in the fishing grounds of the Ba Estuary (north-western Viti Levu) was assessed with a gillnet- and longline-based survey from December 2015 to April 2016. A total of 103 juvenile sharks identified as blacktip Carcharhinus limbatus (n = 57), scalloped hammerhead Sphyrna lewini (n = 35), and great hammerhead Sphyrna mokarran (n = 11) sharks were captured, tagged, and released. The condition of umbilical scars (68 % open or semi-healed), mean sizes of individuals (± SD) (C. limbatus: 66.5 ± 3.8 cm, S. lewini: 51.8 ± 4.8 cm, S. mokarran 77.4 ± 2.8 cm), and the presence of these species over recent years (based on fishermen interviews), suggest that the Ba Estuary area is a critical habitat for multiple species that are classified as "Near Threatened" or "Endangered". Specifically, the area likely acts as a parturition ground over the studied period, and potentially as a subsequent nursery area. We identified subareas of high abundance and found that temperature, salinity and depth acted as small-scale environmental drivers of shark abundance. The data suggests a tendency for species-specific spatial use, both horizontally (i.e. between sampling areas) and vertically (i.e. across the water column). These results enhance the understanding of shark ecology in Fiji and provide a scientific basis for the implementation of local conservation strategies that contribute to the protection of these threatened species.
Electromyography in Labor and Parturition
ClinicalTrials.gov study NCT03899493. IPD Sharing: UNDECIDED. Countries: 1. Publications: 4.
Assessment of Alterations in Immune Function During Pregnancy and Post Parturition
ClinicalTrials.gov study NCT01200979. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Data from: Two decades of genetic profiling yields first evidence of natal philopatry and long-term fidelity to parturition sites in sharks
Open the record for dataset details and reuse information.
Data from: Discovery of a multi-species shark aggregation and parturition area in the Ba Estuary, Fiji Islands
Open the record for dataset details and reuse information.
Moose (Alces alces) parturition dates, Sweden
<p>In northern environments, the period of access to high-quality forage is limited, exerting strong selective pressure to optimize the timing of parturition. We analysed timing and variation in moose parturition dates of 555 females at 18 study sites across 12ᵒ of latitude (56-68ᵒ N, 1,350 km) in Sweden. We found evidence for a spatial match of parturition timing to vegetation onset, but no evidence that moose adjust parturition to vegetation onset in a given year. We found a breakpoint at 64ᵒ N. Despite adaptation across latitudes, temporal divergences occurred. Females <64 ᵒN calved after vegetation onset and females >64 ᵒN calved before. Here, parturition before vegetation onset might be a strategy to optimize forage utilization time with the very short growing season. Highly seasonal environments such as at higher latitudes may make it advantageous to adapt parturition towards long-term climatic patterns by matching the most favourable period. Given the direction of temporal divergence, our study suggests that climate change may have less of an impact on moose parturition at northern latitudes than southern latitudes.</p>
FIGURE 3 in Parturition time for the Blacktip shark, Carcharhinus limbatus (Carcharhiniformes: Carcharhinidae), in Southwestern Atlantic
FIGURE 3 | Monthly mean daily abundance (number of individuals divided by days of sampling) and size (mean total length ± standard deviation) of neonates (<90 cm TL) Blacktip Sharks, Carcharhinus limbatus, caught in Northeastern Brazil. A) Ceará; B) Rio Grande do Norte; C) Sergipe. White bars: monthly frequency; black dots with lines: mean TL± standard deviation.
FIGURE 2 in Parturition time for the Blacktip shark, Carcharhinus limbatus (Carcharhiniformes: Carcharhinidae), in Southwestern Atlantic
FIGURE 2 | Total Length (TL) frequency for the Blacktip Shark, Carcharhinus limbatus, caught in Northeastern Brazil. A) Ceará; B) Rio Grande do Norte; C) Sergipe. Black bars, males; white bars, females; gray bars, undetermined sex.
Continuous Non-Invasive Measurement of Hemoglobin During Parturition
ClinicalTrials.gov study NCT03150043. IPD Sharing: NO. Countries: 1. Publications: 0.
Moose (Alces alces) parturition dates, Sweden
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Nucleus-localized S100A9 triggers senescence of human amnion fibroblasts as a heterochromatin buster at parturition
GEO Series GSE273966. Homo sapiens. 6 samples. Type: Expression profiling by high throughput sequencing.
C/EBPδ drives key endocrine signals in human fetal membranes at parturition
GEO Series GSE166320. Homo sapiens. 6 samples. Type: Expression profiling by high throughput sequencing.
C/EBPδ drives key endocrine signals in human fetal membranes at parturition [ChIP-seq]
GEO Series GSE166454. Homo sapiens. 12 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.