15 results on '"Medeiros Mirra, Renata"'
Search Results
2. Prolonged grief during and beyond the pandemic: factors associated with levels of grief in a four time-point longitudinal survey of people bereaved in the first year of the COVID-19 pandemic
- Author
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Harrop, Emily, primary, Medeiros Mirra, Renata, additional, Goss, Silvia, additional, Longo, Mirella, additional, Byrne, Anthony, additional, Farnell, Damian J. J., additional, Seddon, Kathy, additional, Penny, Alison, additional, Machin, Linda, additional, Sivell, Stephanie, additional, and Selman, Lucy E., additional
- Published
- 2023
- Full Text
- View/download PDF
3. The migration strategy, diet and foraging ecology of a small seabird in a changing environment
- Author
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Medeiros Mirra, Renata Jorge
- Subjects
591.7 ,GC Oceanography ,QL Zoology - Abstract
This thesis examines the migration strategy, diet and foraging ecology of the smallest Atlantic seabird, the European Storm Petrel Hydrobates pelagicus.Evidence was found for sex-specific migration behaviour, opportunistic feeding, temporal variation in diet, and the strategy regulation of energy reserves in response to varying environmental conditions, as a buffer against starvation during migration. Molecular sexing from feather and faecal samples revealed an unexpectedly strong female bias in the sex ratio of Storm Petrels attracted to tape-lures of conspecific calls, during their northwards migration past the coast of SW Portugal. The thesis describes the development and application of molecular techniques, in combination with stable isotope analysis, to study Storm Petrel diet by the detection of prey DNA from faecal samples. The major category of prey detected was fish (chiefly European Sardines Sardina pilchardus). Other components of the diet were other pelagic and demersal fish species, Cephalopoda (primarily cuttlefish Sepia spp.), Amphipoda, Isopoda and a range of terrestrial invertebrates. Large between-year fluctuations in the level of body reserves carried by these birds were observed over the 21-year study period (1990-2010). The pattern of body mass variation followed a smooth oscillation, which was not an artefact of differences among years in the distribution of capture effort, body size or sex ratio changes. Local sea surface temperature (SST), net primary production (NPP) and European Sardine biomass were key factors associated with between-year changes in Storm Petrol body reserves. These associations suggest that Storm Petrels strategically regulate their body reserves to buffer against starvation in years of low food abundance.
- Published
- 2010
4. How animals distribute themselves in space: energy landscapes of Antarctic avian predators
- Author
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Masello, Juan, Barbosa, Andres, Kato, Akiko, Mattern, Thomas, Medeiros Mirra, Renata, Stockdale, Jennifer, Kümmel, Marc N., Bustamante, Paco, Belliure, Josabel, Benzal, Jesús, Colominas-Ciuró, Roger, and Menéndez-Blázquez, Javier
- Subjects
QH301 ,QL ,QH ,Q1 - Abstract
Background: Energy landscapes provide an approach to the mechanistic basis of spatial ecology and decision- making in animals. This is based on the quantification of the variation in the energy costs of movements through a given environment, as well as how these costs vary in time and for different animal populations. Organisms as diverse as fish, mammals, and birds will move in areas of the energy landscape that result in minimised costs and maximised energy gain. Recently, energy landscapes have been used to link energy gain and variable energy costs of foraging to breeding success, revealing their potential use for understanding demographic changes. Methods: Using GPS-temperature-depth and tri-axial accelerometer loggers, stable isotope and molecular analyses of the diet, and leucocyte counts, we studied the response of gentoo (Pygoscelis papua) and chinstrap (Pygoscelis antarcticus) penguins to different energy landscapes and resources. We compared species and gentoo penguin populations with contrasting population trends. Results: Between populations, gentoo penguins from Livingston Island (Antarctica), a site with positive population trends, foraged in energy landscape sectors that implied lower foraging costs per energy gained compared with those around New Island (Falkland/Malvinas Islands; sub-Antarctic), a breeding site with fluctuating energy costs of foraging, breeding success and populations. Between species, chinstrap penguins foraged in sectors of the energy landscape with lower foraging costs per bottom time, a proxy for energy gain. They also showed lower physiological stress, as revealed by leucocyte counts, and higher breeding success than gentoo penguins. In terms of diet, we found a flexible foraging ecology in gentoo penguins but a narrow foraging niche for chinstraps. Conclusions: The lower foraging costs incurred by the gentoo penguins from Livingston, may favour a higher breeding success that would explain the species’ positive population trend in the Antarctic Peninsula. The lower foraging costs in chinstrap penguins may also explain their higher breeding success, compared to gentoos from Antarctica but not their negative population trend. Altogether, our results suggest a link between energy landscapes and breeding success mediated by the physiological condition. Keywords: Antarctica, Breeding success, Chinstrap penguin Pygoscelis antarcticus, Energy costs, Energy landscapes, Gentoo penguin Pygoscelis papua, Physiological condition, Physiological stress, Population trends, Sub-Antarctic
- Published
- 2021
5. Pancreatic cancer associated- cachexia: Role of the Modified Glasgow Prognostic Score in outcome prediction
- Author
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Cardoso, Débora, Vasconcelos Matos, Leonor, Fernandes, Leonor, Dias Domingues, Tiago, João, Ricardo, Medeiros Mirra, Renata, Miranda, Helena, and Martins, Ana
- Abstract
Cancer-associated-cachexia (CAC) is a ubiquitous characteristic of pancreatic cancer (PC) and 1/3 of patients die from its complications. Systemic inflammation is key in CAC and the modified Glasgow Prognostic Score (mGPS) is a reliable inflammation-based prognostic tool. We aimed to evaluate the prognostic value of consensus-based cachexia classification and mGPS, their agreement and to analyze relevant clinical predictors of cachexia. This unicentric, retrospective, cohort study included patients with advanced PC treated over a 5-year period. Cachexia was classified according to weight loss, body mass index and mGPS. Fisher’s test was used to test correlation between classifications and logistic regression models were performed to test their association with other variables. Survival was analyzed with cox regression and Kaplan-Meier curves. 88 eligible patients (mean age 72, 56% female) were reviewed. At baseline, cachectic patients (CP) (77%), when compared with pre-CP, had worse performance status (p=0.016), more NLR>3,5 (p3.5 was a significant predictor of both cachexia (p
- Published
- 2020
6. Endocrine therapy for the treatment of leptomeningeal carcinomatosis in luminal breast cancer: a comprehensive review
- Author
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Fernandes, Leonor, primary, de Matos, Leonor Vasconcelos, additional, Cardoso, Débora, additional, Saraiva, Marlene, additional, Medeiros-Mirra, Renata, additional, Coelho, Andreia, additional, Miranda, Helena, additional, and Martins, Ana, additional
- Published
- 2020
- Full Text
- View/download PDF
7. The migration strategy, diet and foraging ecology of a small seabird in a changing environment
- Author
-
Medeiros Mirra, Renata Jorge
- Subjects
GC ,QL - Abstract
This thesis examines the migration strategy, diet and foraging ecology of the smallest Atlantic seabird, the European Storm Petrel Hydrobates pelagicus.Evidence was found for sex-specific migration behaviour, opportunistic feeding, temporal variation in diet, and the strategy regulation of energy reserves in response to varying environmental conditions, as a buffer against starvation during migration. Molecular sexing from feather and faecal samples revealed an unexpectedly strong female bias in the sex ratio of Storm Petrels attracted to tape-lures of conspecific calls, during their northwards migration past the coast of SW Portugal. The thesis describes the development and application of molecular techniques, in combination with stable isotope analysis, to study Storm Petrel diet by the detection of prey DNA from faecal samples. The major category of prey detected was fish (chiefly European Sardines Sardina pilchardus). Other components of the diet were other pelagic and demersal fish species, Cephalopoda (primarily cuttlefish Sepia spp.), Amphipoda, Isopoda and a range of terrestrial invertebrates. Large between-year fluctuations in the level of body reserves carried by these birds were observed over the 21-year study period (1990-2010). The pattern of body mass variation followed a smooth oscillation, which was not an artefact of differences among years in the distribution of capture effort, body size or sex ratio changes. Local sea surface temperature (SST), net primary production (NPP) and European Sardine biomass were key factors associated with between-year changes in Storm Petrol body reserves. These associations suggest that Storm Petrels strategically regulate their body reserves to buffer against starvation in years of low food abundance.
8. Bereavement during Covid-19: Findings from a UK-wide online survey on the use and perceived helpfulness of informal and formal support during the pandemic
- Author
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Goss, Silvia, Medeiros Mirra, Renata, Longo, Mirella, Sivell, Stephanie, Seddon, Kathy, Torrens-Burton, Anna, Sutton, Eileen, Nelson, Annmarie, Byrne, Anthony, Selman, Lucy E., Harrop, Emily, Goss, Silvia, Medeiros Mirra, Renata, Longo, Mirella, Sivell, Stephanie, Seddon, Kathy, Torrens-Burton, Anna, Sutton, Eileen, Nelson, Annmarie, Byrne, Anthony, Selman, Lucy E., and Harrop, Emily
- Abstract
Introduction Millions became bereaved during the pandemic, with many facing challenges accessing support. Aims To describe the use and helpfulness of different types of support in a cohort of people bereaved during the pandemic in the UK. Methods A longitudinal survey of people bereaved during the pandemic over four time points. At 7- and 13-months post-bereavement (T2 and T3), participants rated the helpfulness of support used and described how they had been helped by this support. Results 420 participants completed at least one follow-up survey (T2, T3 or both). Most respondents were female (88.3%) and had lost a parent (57.6%) or partner (24.3%), with 3.3% from a minoritised ethnic background. Support from family and friends, reported by 89.3% of participants, was rated as ‘quite helpful’ (mean rating 4.3 out of 5), and included help with practical tasks, expressing feelings/sharing grief, remembering, feeling cared for and less isolated. The most commonly used form of other support was 1:1 support (e.g. counselling), used by 40.5% of participants, with an average helpfulness rating of 4.1, helping participants feel listened to and process their grief. Online community support, used by 31.0% of participants, was also rated ‘quite helpful’ (3.9), enabling sharing with similar others, feeling understood and less alone. Informal and formal bereavement groups were rated as similarly helpful (4.2) while helplines and specialist mental health support were slightly less helpful (3.6) (used by 9.3%, 4.8%, 7.1% and 4.5% of participants, respectively). Conclusions Results demonstrate the perceived benefits and helpfulness of different forms of bereavement support used during the pandemic. Impact These findings highlight the value of informal as well as formal support, particularly bereavement counselling. Policy makers must attend to the foundational and second tiers of the public health model of bereavement support, supporting communities as well as services.
9. Inequalities in access to bereavement support before and during COVID-19: Findings from voluntary and community sector bereavement services in the UK
- Author
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Selman, L., Sutton, E., Medeiros Mirra, Renata, Goss, Silvia, Longo, Mirella, Seddon, Kathy, Penny, A., Nelson, Annmarie, Byrne, Anthony, Harrop, Emily, Selman, L., Sutton, E., Medeiros Mirra, Renata, Goss, Silvia, Longo, Mirella, Seddon, Kathy, Penny, A., Nelson, Annmarie, Byrne, Anthony, and Harrop, Emily
10. The impact of the Covid-19 pandemic on bereavement support services in the UK: findings from a cross-sectional online survey and qualitative case studies.
- Author
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Sutton, Eileen, Medeiros Mirra, Renata, Goss, Silvia, Longo, Mirella, Seddon, Kathy, Penny, Alison, Nelson, Annmarie, Byrne, Anthony, Harrop, Emily, Selman, Lucy, Sutton, Eileen, Medeiros Mirra, Renata, Goss, Silvia, Longo, Mirella, Seddon, Kathy, Penny, Alison, Nelson, Annmarie, Byrne, Anthony, Harrop, Emily, and Selman, Lucy
11. OA05:02 The impact of COVID-19 on the provision of voluntary and community sector bereavement services: A cross-sectional survey from the UK.
- Author
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Selman, L., Sutton, E., Medeiros Mirra, Renata, Goss, Silvia, Longo, Mirella, Seddon, Kathy, Penny, A., Nelson, Annmarie, Byrne, Anthony, Harrop, Emily, Selman, L., Sutton, E., Medeiros Mirra, Renata, Goss, Silvia, Longo, Mirella, Seddon, Kathy, Penny, A., Nelson, Annmarie, Byrne, Anthony, and Harrop, Emily
- Abstract
Background/aims: During the COVID-19 pandemic, voluntary and community sector (VCS) bereavement services including hospices have played a central role in supporting the bereaved. We aimed to describe the impact of the pandemic on these services to inform service development and policy. Methods: Cross-sectional online survey of VCS bereavement services in the UK, open March-May 2021, disseminated via national organisations, associations and networks, and social media. Results: 147 organisations participated; 53% were regional, 16% UK-wide. 36% were hospice or palliative care services, 15% national bereavement charities or NGOs; 12% local bereavement charities. During the pandemic referrals increased for 46% of organisations and decreased for 35%. 40.3% reported a current waiting list >3 weeks. 78.2% had changed services due to Covid; 51.7% introduced new services. There had been a significant reduction in provision of all face-to-face support including peer group meetings (50% to 4.1%, OR 0.04), facilitated group meetings (78% to 11%, OR 0.04), 1:1 support (87% to 27%, OR 0.06) and specialist intervention (44% to 16%, OR 0.25). Online and telephone provision saw major increases, particularly online 1:1 support (8.8% to 83%, OR 50.3), facilitated group meetings (4.1% to 56%, OR 30.48) and specialist intervention (3.4% to 36%, OR 16.01). Challenges included staff/volunteers providing support from home (69/64%), emotional impact on staff/volunteers (67/41%), increased pressure on staff due to client volume (41%) and complexity of needs (44%), implementing staff training (60%) and financial challenges (53%). 93% reported positive changes/opportunities during the pandemic, e.g., new coordination initiatives (47%). Conclusions: UK bereavement services rapidly transformed during the pandemic, despite significant challenges. To ensure positive changes and innovations are retained, the experiences and acceptability of new and adapted services among clients and staff require f
12. Bereavement during Covid-19: Findings from a UK-wide online survey on the use and impact of informal and formal support among people grieving during the pandemic.
- Author
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Goss, Silvia, Medeiros Mirra, Renata, Longo, Mirella, Sivell, Stephanie, Seddon, Kathy, Torrens-Burton, Anna, Sutton, Eileen, Nelson, Annmarie, Byrne, Anthony, Selman, Lucy, Harrop, Emily, Goss, Silvia, Medeiros Mirra, Renata, Longo, Mirella, Sivell, Stephanie, Seddon, Kathy, Torrens-Burton, Anna, Sutton, Eileen, Nelson, Annmarie, Byrne, Anthony, Selman, Lucy, and Harrop, Emily
- Abstract
Background: Millions of people became bereaved during the Covid-19 pandemic, with many facing significant challenges accessing both informal and formal sources of support. Rational: We describe the use and experiences of bereavement support in a cohort of people bereaved during the pandemic in the UK. Design: A longitudinal online survey over three time points. Participants were asked about the support they had used and in free-text comments explained how they felt helped by this support. Evaluation: By 7-months post-bereavement, 88.3% of T2 survey participants (N=384; 88% female) continued to be supported by family and friends. They were helped with practical tasks, expressing feelings and sharing their grief, remembering the person they had lost, and feeling cared for and less isolated. 36.7% had received formal 1:1 support (e.g. counselling), helping them feel listened to and process their grief in a non-judgmental environment. Online communities (e.g. online bereavement forums and Facebook groups, used by 31%) helped people by sharing with similar others and feeling understood and less alone. 18.8% had contacted a physician for help with sick notes, medication or referrals to specialist bereavement or mental health support. Helplines, informal and formal bereavement groups, and mental health support were accessed less frequently (7%, 8.1%, 3.6%, and 3.1%, respectively). Conclusion: Results demonstrate the different types and benefits of bereavement support used during the pandemic. These insights can help support providers strengthen the mechanisms through which they benefit support-users, whilst also helping bereaved people identify support that is most relevant to their individual needs
13. Bereavement during Covid-19: Findings from a UK-wide online survey on the use and impact of informal and formal support among people grieving during the pandemic.
- Author
-
Goss, Silvia, Medeiros Mirra, Renata, Longo, Mirella, Sivell, Stephanie, Seddon, Kathy, Torrens-Burton, Anna, Sutton, Eileen, Nelson, Annmarie, Byrne, Anthony, Selman, Lucy, Harrop, Emily, Goss, Silvia, Medeiros Mirra, Renata, Longo, Mirella, Sivell, Stephanie, Seddon, Kathy, Torrens-Burton, Anna, Sutton, Eileen, Nelson, Annmarie, Byrne, Anthony, Selman, Lucy, and Harrop, Emily
- Abstract
Background: Millions of people became bereaved during the Covid-19 pandemic, with many facing significant challenges accessing both informal and formal sources of support. Rational: We describe the use and experiences of bereavement support in a cohort of people bereaved during the pandemic in the UK. Design: A longitudinal online survey over three time points. Participants were asked about the support they had used and in free-text comments explained how they felt helped by this support. Evaluation: By 7-months post-bereavement, 88.3% of T2 survey participants (N=384; 88% female) continued to be supported by family and friends. They were helped with practical tasks, expressing feelings and sharing their grief, remembering the person they had lost, and feeling cared for and less isolated. 36.7% had received formal 1:1 support (e.g. counselling), helping them feel listened to and process their grief in a non-judgmental environment. Online communities (e.g. online bereavement forums and Facebook groups, used by 31%) helped people by sharing with similar others and feeling understood and less alone. 18.8% had contacted a physician for help with sick notes, medication or referrals to specialist bereavement or mental health support. Helplines, informal and formal bereavement groups, and mental health support were accessed less frequently (7%, 8.1%, 3.6%, and 3.1%, respectively). Conclusion: Results demonstrate the different types and benefits of bereavement support used during the pandemic. These insights can help support providers strengthen the mechanisms through which they benefit support-users, whilst also helping bereaved people identify support that is most relevant to their individual needs
14. The migration strategy, diet and foraging ecology of a small seabird in a changing environment
- Author
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Medeiros Mirra, Renata Jorge and Medeiros Mirra, Renata Jorge
- Abstract
This thesis examines the migration strategy, diet and foraging ecology of the smallest Atlantic seabird, the European Storm Petrel Hydrobates pelagicus.Evidence was found for sex-specific migration behaviour, opportunistic feeding, temporal variation in diet, and the strategy regulation of energy reserves in response to varying environmental conditions, as a buffer against starvation during migration. Molecular sexing from feather and faecal samples revealed an unexpectedly strong female bias in the sex ratio of Storm Petrels attracted to tape-lures of conspecific calls, during their northwards migration past the coast of SW Portugal. The thesis describes the development and application of molecular techniques, in combination with stable isotope analysis, to study Storm Petrel diet by the detection of prey DNA from faecal samples. The major category of prey detected was fish (chiefly European Sardines Sardina pilchardus). Other components of the diet were other pelagic and demersal fish species, Cephalopoda (primarily cuttlefish Sepia spp.), Amphipoda, Isopoda and a range of terrestrial invertebrates. Large between-year fluctuations in the level of body reserves carried by these birds were observed over the 21-year study period (1990-2010). The pattern of body mass variation followed a smooth oscillation, which was not an artefact of differences among years in the distribution of capture effort, body size or sex ratio changes. Local sea surface temperature (SST), net primary production (NPP) and European Sardine biomass were key factors associated with between-year changes in Storm Petrol body reserves. These associations suggest that Storm Petrels strategically regulate their body reserves to buffer against starvation in years of low food abundance.
15. The migration strategy, diet and foraging ecology of a small seabird in a changing environment
- Author
-
Medeiros Mirra, Renata Jorge and Medeiros Mirra, Renata Jorge
- Abstract
This thesis examines the migration strategy, diet and foraging ecology of the smallest Atlantic seabird, the European Storm Petrel Hydrobates pelagicus.Evidence was found for sex-specific migration behaviour, opportunistic feeding, temporal variation in diet, and the strategy regulation of energy reserves in response to varying environmental conditions, as a buffer against starvation during migration. Molecular sexing from feather and faecal samples revealed an unexpectedly strong female bias in the sex ratio of Storm Petrels attracted to tape-lures of conspecific calls, during their northwards migration past the coast of SW Portugal. The thesis describes the development and application of molecular techniques, in combination with stable isotope analysis, to study Storm Petrel diet by the detection of prey DNA from faecal samples. The major category of prey detected was fish (chiefly European Sardines Sardina pilchardus). Other components of the diet were other pelagic and demersal fish species, Cephalopoda (primarily cuttlefish Sepia spp.), Amphipoda, Isopoda and a range of terrestrial invertebrates. Large between-year fluctuations in the level of body reserves carried by these birds were observed over the 21-year study period (1990-2010). The pattern of body mass variation followed a smooth oscillation, which was not an artefact of differences among years in the distribution of capture effort, body size or sex ratio changes. Local sea surface temperature (SST), net primary production (NPP) and European Sardine biomass were key factors associated with between-year changes in Storm Petrol body reserves. These associations suggest that Storm Petrels strategically regulate their body reserves to buffer against starvation in years of low food abundance.
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