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1.
Artigo em Inglês | MEDLINE | ID: mdl-37887681

RESUMO

Numerous UK surveys conducted during COVID-19 examined the pandemic's detrimental effects on health, and the consequences of lockdown and other public health restrictions on mental health. Some surveys considered specific populations and social inequities exacerbated during COVID-19. Fewer surveys examined the ways in which the adverse effects of public health restrictions, such as lockdown, shielding and social distancing, might be alleviated. Drawing upon self-determination theory, the purpose of the current study was to assess whether culture-, health- and nature-based engagement would mitigate the effects of these restrictions on psychological wellbeing, social connectedness and loneliness. Quantitative data from a smaller-scale survey (n = 312) and a subset of questions embedded in a larger-scale survey (n = 3647) were analyzed using univariate and multivariate methods. Frequency of engagement, whether participation was online or offline and with or without other people, and the extent to which type of participation was associated with psychological wellbeing, social connectedness and loneliness were examined. Sports and fitness, gardening and reading occurred frequently in both surveys. For the smaller-scale survey, increases in connectedness and frequency of participation and decreases in loneliness were significantly associated with improved wellbeing, whereas the type of participation and age range were not significant predictors. Outcomes from the smaller-scale survey approximated the larger-scale survey for measures of loneliness, type and frequency of participation and proportion of respondents in each age range. As the frequency of participation was a significant predictor of wellbeing, but the type of participation was not significant, the findings implied that any type of participation in a sufficient quantity would be likely to boost wellbeing.


Assuntos
COVID-19 , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Humanos , Solidão/psicologia , COVID-19/epidemiologia , Saúde Pública , Controle de Doenças Transmissíveis , Inquéritos e Questionários , Reino Unido/epidemiologia
2.
J Appl Gerontol ; 42(7): 1466-1476, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-36724235

RESUMO

Social prescribing is a non-clinical approach to addressing social, environmental, and economic factors affecting how people feel physical and/or emotionally. It involves connecting people to "community assets" (e.g., local groups, organizations, and charities) that can contribute to positive well-being. We sought to explain in what ways, for whom, and why the cultural sector can support social prescribing with older people. We conducted semi-structured interviews with 28 older people (aged 60+) and 25 cultural sector staff. The following nine concepts, developed from interview data, progressed the understanding of tailoring cultural offers, which came from our previous realist review-immersion, buddying, café culture, capacity, emotional involvement, perseverance, autonomy, elitism, and virtual cultural offers. Through tailoring, we propose that older people might experience one or more of the following benefits from engaging with a cultural offer as part of social prescribing-being immersed, psychological holding, connecting, and transforming through self-growth.


Assuntos
Nível de Saúde , Idoso , Humanos , Inclusão Social
3.
Front Public Health ; 11: 1286479, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38239795

RESUMO

Integrated care refers to person-centered and coordinated, health and social care, and community services. Integrated care systems are partnerships of organizations that deliver health and care services which were placed on a statutory footing in England, April 2022. Due to the need for fast, accessible, and relevant evidence, a rapid review was conducted according to World Health Organization methods to determine barriers and enablers of integrated care across the United Kingdom, 2018-2022. Nine databases were searched for review articles reporting evaluation of integrated care interventions involving medical (clinical and diagnostic) and nonmedical (public health services and community-based or social care/person-centred care) approaches, quality checked with the Critical Appraisal Skills Program qualitative checklist. OpenGrey and hand searches were used to identify grey literature, quality checked with the Authority, Accuracy, Coverage, Objectivity, Date, and Significance checklist. Thirty-four reviews and 21 grey literature reports fitted inclusion criteria of adult physical/mental health outcomes/multiple morbidities. Thematic analysis revealed six themes (collaborative approach; costs; evidence and evaluation; integration of care; professional roles; service user factors) with 20 subthemes including key barriers (cost effectiveness; effectiveness of integrated care; evaluation methods; focus of evidence; future research; impact of integration) and enablers (accessing care; collaboration and partnership; concept of integration; inter-professional relationships; person-centered ethos). Findings indicated a paucity of robust research to evaluate such interventions and lack of standardized methodology to assess cost effectiveness, although there is growing interest in co-production that has engendered information sharing and reduced duplication, and inter-professional collaborations that have bridged task-related gaps and overlaps. The importance of identifying elements of integrated care associated with successful outcomes and determining sustainability of interventions meeting joined-up care and preventive population health objectives was highlighted.


Assuntos
Prestação Integrada de Cuidados de Saúde , Literatura Cinzenta , Adulto , Humanos , Reino Unido , Inglaterra
4.
BMC Med ; 20(1): 260, 2022 08 24.
Artigo em Inglês | MEDLINE | ID: mdl-35999539

RESUMO

BACKGROUND: Non-medical issues (e.g. loneliness, financial concerns, housing problems) can shape how people feel physically and psychologically. This has been emphasised during the Covid-19 pandemic, especially for older people. Social prescribing is proposed as a means of addressing non-medical issues, which can include drawing on support offered by the cultural sector. METHOD: A rapid realist review was conducted to explore how the cultural sector (in particular public/curated gardens, libraries and museums), as part of social prescribing, can support the holistic well-being of older people under conditions imposed by the pandemic. An initial programme theory was developed from our existing knowledge and discussions with cultural sector staff. It informed searches on databases and within the grey literature for relevant documents, which were screened against the review's inclusion criteria. Data were extracted from these documents to develop context-mechanism-outcome configurations (CMOCs). We used the CMOCs to refine our initial programme theory. RESULTS: Data were extracted from 42 documents. CMOCs developed from these documents highlighted the importance of tailoring-shaping support available through the cultural sector to the needs and expectations of older people-through messaging, matching, monitoring and partnerships. Tailoring can help to secure benefits that older people may derive from engaging with a cultural offer-being distracted (absorbed in an activity) or psychologically held, making connections or transforming through self-growth. We explored the idea of tailoring in more detail by considering it in relation to Social Exchange Theory. CONCLUSIONS: Tailoring cultural offers to the variety of conditions and circumstances encountered in later life, and to changes in social circumstances (e.g. a global pandemic), is central to social prescribing for older people involving the cultural sector. Adaptations should be directed towards achieving key benefits for older people who have reported feeling lonely, anxious and unwell during the pandemic and recovery from it.


Assuntos
COVID-19 , Pandemias , Idoso , Humanos , Incerteza
5.
Health Soc Care Community ; 30(6): e5305-e5313, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35869795

RESUMO

Older people's well-being can be bolstered by engaging with cultural activities and venues. They may be encouraged to try cultural offers by a link worker as part of social prescribing. However, the cultural sector, like all parts of life, was affected by the COVID-19 pandemic; this has had implications for cultural offers available to link workers. A study was conducted to explore the views and experiences of link workers in using the cultural sector within social prescribing, particularly for older people (aged 60+) during the pandemic. An online questionnaire was distributed to and completed by link workers in the UK. Data were analysed mainly using descriptive statistics. Open text responses were clustered into similar ideas to create key concepts. Useable responses were received from 148 link workers. They highlighted a general lack of interaction between link workers and the cultural sector about how the latter could support social prescribing. Results suggested that personal familiarity with cultural offers might prompt link workers to refer to them. Some respondents proposed that cultural offers were regarded as elitist, which deterred them from referring there. However, there was a general acknowledgement that the cultural sector could contribute to social prescribing. Link workers need to regard the cultural sector as accessible, appropriate, adequate, affordable and available before referring older people to cultural offers as part of social prescribing. Link workers may benefit from becoming more familiar with cultural sector staff and offers, including online resources, so they can then propose them to patients with confidence.


Assuntos
COVID-19 , Humanos , Idoso , COVID-19/epidemiologia , Pandemias
6.
J Clin Transl Sci ; 6(1): e58, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35720968

RESUMO

Museum engagement may be an effective approach for decreasing social disconnection and pain among individuals living with chronic pain. In October 2019, we launched a randomized controlled trial to assess the feasibility of museum engagement for individuals living with chronic pain; the study was halted in March, 2020 due to Covid-19-related safety concerns. This paper describes the process of transitioning from in-person to virtual museum programing in order to continue the study. Virtual museum programing is a feasible option for individuals living with chronic pain that is amenable to research and which may improve accessibility, inclusivity, and scalability relative to in-person programing.

7.
Artigo em Inglês | MEDLINE | ID: mdl-35409769

RESUMO

Community engagement, such as participating in arts, nature or leisurely activities, is positively associated with psychological and physiological wellbeing. Community-based engagement during the COVID-19 pandemic facilitated informal and local mutual aid between individuals. This rapid evidence review assesses the emergence of community-based arts, nature, music, theatre and other types of cultural engagement amongst UK communities in response to the COVID-19 pandemic. Here, we focus on all community engagement with a sub-focus on provisions accessed by and targeted towards vulnerable groups. Two hundred and fifty-six resources were included that had been created between February 2020 and January 2021. Resources were identified through Google Scholar, PubMed, Web of Science, MedRXic, PsycharXiv and searches for grey literature and items in the public domain. The majority reported services that had been adapted to become online, telephone-based or delivered at a distance from doorsteps. Several quality assessment frameworks were used to evaluate the quality of data. Whilst a number of peer-reviewed, grey literature and public domain articles were identified, less than half of the identified literature met quality thresholds. The pace of the response to the pandemic may have meant that robust evaluation procedures were not always in place.


Assuntos
COVID-19 , Pandemias , COVID-19/epidemiologia , Desigualdades de Saúde , Humanos , Reino Unido/epidemiologia
9.
BMJ Open ; 9(2): e025465, 2019 02 20.
Artigo em Inglês | MEDLINE | ID: mdl-30787093

RESUMO

OBJECTIVE: Drawing on a growing body of research suggesting that taking part in artistic and cultural activities benefits health and well-being, the objective was to develop a participatory action research (PAR) method for assessing the impact of arts interventions on forcibly displaced people, and identify themes concerning perceived benefits of such programmes. DESIGN: A collaborative study following PAR principles of observation, focus groups and in-depth semistructured interviews. SETTING: London-based charity working with asylum seekers and refugees. PARTICIPANTS: An opportunity sample (n=31; 6 males) participated in focus groups comprising refugees/asylum seekers (n=12; 2 males), volunteers (n=4; 1 males) and charity staff (n=15; 3 males). A subset of these (n=17; 3 males) participated in interviews comprising refugees/asylum seekers (n=7; 1 males), volunteers (n=7; 1 males) and charity staff (n=3; 1 males). RESULTS: Focus group findings showed that participants articulated the impact of creative activities around three main themes: skills, social engagement and personal emotions that were explored during in-depth interviews. Thematic analysis of interviews was conducted in NVivo 11 and findings showed that artistic and cultural activities impacted positively by helping participants find a voice, create support networks and learn practical skills useful in the labour market. CONCLUSIONS: The study expanded on arts and well-being research by exploring effects of cultural and creative activities on the psychosocial well-being of refugees and asylum seekers. By focusing on the relationship between arts, well-being and forced displacement, the study was instrumental in actively trying to change the narrative surrounding refugees and asylum seekers, often depicted in negative terms in the public sphere.


Assuntos
Arte , Cultura , Pesquisa sobre Serviços de Saúde , Saúde Mental , Refugiados/psicologia , Feminino , Grupos Focais , Humanos , Entrevistas como Assunto , Londres , Masculino , Pesquisa Qualitativa
10.
Science ; 360(6395): 1346-1349, 2018 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-29930136

RESUMO

Although all extant apes are threatened with extinction, there is no evidence for human-caused extinctions of apes or other primates in postglacial continental ecosystems, despite intensive anthropogenic pressures associated with biodiversity loss for millennia in many regions. Here, we report a new, globally extinct genus and species of gibbon, Junzi imperialis, described from a partial cranium and mandible from a ~2200- to 2300-year-old tomb from Shaanxi, China. Junzi can be differentiated from extant hylobatid genera and the extinct Quaternary gibbon Bunopithecus by using univariate and multivariate analyses of craniodental morphometric data. Primates are poorly represented in the Chinese Quaternary fossil record, but historical accounts suggest that China may have contained an endemic ape radiation that has only recently disappeared.


Assuntos
Extinção Biológica , Hylobates , Animais , Antropologia , Biodiversidade , Fósseis , Humanos , Hylobates/anatomia & histologia , Hylobates/classificação , Mandíbula/anatomia & histologia , Crânio/anatomia & histologia
11.
Perspect Public Health ; 138(1): 28-38, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29130869

RESUMO

AIMS: To assess psychological wellbeing in a novel social prescription intervention for older adults called Museums on Prescription and to explore the extent of change over time in six self-rated emotions ('absorbed', 'active', 'cheerful', 'encouraged', 'enlightened' and 'inspired'). METHODS: Participants ( n = 115) aged 65-94 years were referred to museum-based programmes comprising 10 weekly sessions, by healthcare and third sector organisations using inclusion criteria (e.g. socially isolated, able to give informed consent, not in employment, not regularly attending social or cultural activities) and exclusion criteria (e.g. unable to travel to the museum, unable to function in a group situation, unlikely to be able to attend all sessions, unable to take part in interviews and complete questionnaires). In a within-participants' design, the Museum Wellbeing Measure for Older Adults (MWM-OA) was administered pre-post session at start-, mid- and end-programme. A total of 12 programmes, facilitated by museum staff and volunteers, were conducted in seven museums in central London and across Kent. In addition to the quantitative measures, participants, carers where present, museum staff and researchers kept weekly diaries following guideline questions and took part in end-programme in-depth interviews. RESULTS: Multivariate analyses of variance showed significant participant improvements in all six MWM-OA emotions, pre-post session at start-, mid- and end-programme. Two emotions, 'absorbed' and 'enlightened', increased pre-post session disproportionately to the others; 'cheerful' attained the highest pre-post session scores whereas 'active' was consistently lowest. CONCLUSION: Museums can be instrumental in offering museum-based programmes for older adults to improve psychological wellbeing over time. Participants in the study experienced a sense of privilege, valued the opportunity to liaise with curators, visit parts of the museum closed to the public and handle objects normally behind glass. Participants appreciated opportunities afforded by creative and co-productive activities to acquire learning and skills, and get to know new people in a different context.


Assuntos
Arteterapia , Saúde Mental , Museus , Idoso , Idoso de 80 Anos ou mais , Arte , Demência/reabilitação , Feminino , Humanos , Masculino , Reino Unido
12.
Health Place ; 48: 47-55, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28934636

RESUMO

This paper presents research findings that help to understand how museum programs created opportunities to enhance wellbeing and health, and changed experiences of social isolation in older adults. The research conceptualized how program elements enabled both individual experiences and relational processes to occur. These components operated within a context that was enriched by the museum as a place to support wellbeing and enhance social interaction. To meaningfully support socially isolated older people as part of local public health strategies, museums need to be accessible and engaging places that purposively support social interaction by involving people and objects, participating in multiple sessions over time, that are facilitated by skilled and knowledgeable staff.


Assuntos
Relações Interpessoais , Museus , Isolamento Social , Idoso , Idoso de 80 Anos ou mais , Feminino , Teoria Fundamentada , Humanos , Masculino , Saúde Mental , Pesquisa Qualitativa , Qualidade de Vida/psicologia
13.
Am J Primatol ; 79(3): 1-13, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28118498

RESUMO

Conservation management requires an evidence-based approach, as uninformed decisions can signify the difference between species recovery and loss. The Hainan gibbon, the world's rarest ape, reportedly exploits the largest home range of any gibbon species, with these apparently large spatial requirements potentially limiting population recovery. However, previous home range assessments rarely reported survey methods, effort, or analytical approaches, hindering critical evaluation of estimate reliability. For extremely rare species where data collection is challenging, it also is unclear what impact such limitations have on estimating home range requirements. We re-evaluated Hainan gibbon spatial ecology using 75 hr of observations from 35 contact days over 93 field-days across dry (November 2010-February 2011) and wet (June 2011-September 2011) seasons. We calculated home range area for three social groups (N = 21 individuals) across the sampling period, seasonal estimates for one group (based on 24 days of observation; 12 days per season), and between-group home range overlap using multiple approaches (Minimum Convex Polygon, Kernel Density Estimation, Local Convex Hull, Brownian Bridge Movement Model), and assessed estimate reliability and representativeness using three approaches (Incremental Area Analysis, spatial concordance, and exclusion of expected holes). We estimated a yearly home range of 1-2 km2 , with 1.49 km2 closest to the median of all estimates. Although Hainan gibbon spatial requirements are relatively large for gibbons, our new estimates are smaller than previous estimates used to explain the species' limited recovery, suggesting that habitat availability may be less important in limiting population growth. We argue that other ecological, genetic, and/or anthropogenic factors are more likely to constrain Hainan gibbon recovery, and conservation attention should focus on elucidating and managing these factors. RESEARCH HIGHLIGHTS: Re-evaluation reveals Hainan gibbon home range as c. 1-2 km2 . Hainan gibbon home range is, therefore, similar to other Nomascus gibbons. Limited data for extremely rare species does not necessarily prevent derivation of robust home range estimates.


Assuntos
Espécies em Perigo de Extinção , Comportamento de Retorno ao Território Vital , Hylobates , Animais , Ecossistema , Reprodutibilidade dos Testes , Estações do Ano
14.
J Appl Gerontol ; 35(3): 349-62, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25421749

RESUMO

The extent to which a museum object-handling intervention enhanced older adult well-being across three health care settings was examined. The program aimed to determine whether therapeutic benefits could be measured objectively using clinical scales. Facilitator-led, 30 to 40 min sessions handling and discussing museum objects were conducted in acute and elderly care (11 one-to-ones), residential (4 one-to-ones and 1 group of five), and psychiatric (4 groups of five) settings. Pre-post measures of psychological well-being (Positive Affect and Negative Affect Schedule) and subjective wellness and happiness (Visual Analogue Scales) were compared. Positive affect and wellness increased significantly in acute and elderly and residential care though not psychiatric care whereas negative affect decreased and happiness increased in all settings. Examination of audio recordings revealed enhanced confidence, social interaction, and learning. The program allowed adults access to a museum activity who by virtue of age and ill health would not otherwise have engaged with museum objects.


Assuntos
Arteterapia/métodos , Felicidade , Instituição de Longa Permanência para Idosos/organização & administração , Museus , Casas de Saúde/organização & administração , Qualidade de Vida/psicologia , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Aprendizagem , Londres , Masculino , Escalas de Graduação Psiquiátrica , Autoimagem , Autorrelato
15.
BMC Evol Biol ; 15: 171, 2015 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-26307405

RESUMO

BACKGROUND: For conservation of highly threatened species to be effective, it is crucial to differentiate natural population parameters from atypical behavioural, ecological and demographic characteristics associated with human disturbance and habitat degradation, which can constrain population growth and recovery. Unfortunately, these parameters can be very hard to determine for species of extreme rarity. The Hainan gibbon (Nomascus hainanus), the world's rarest ape, consists of a single population of c.25 individuals, but intensive management is constrained by a limited understanding of the species' expected population characteristics and environmental requirements. In order to generate a more robust evidence-base for Hainan gibbon conservation, we employed a comparative approach to identify intrinsic and extrinsic drivers of variation in key ecological and behavioural traits (home range size, social group size, mating system) across the Hylobatidae while controlling for phylogenetic non-independence. RESULTS: All three studied traits show strong phylogenetic signals across the Hylobatidae. Although the Hainan gibbon and some closely related species have large reported group sizes, no observed gibbon group size is significantly different from the values expected on the basis of phylogenetic relationship alone. However, the Hainan gibbon and two other Nomascus species (N. concolor, N. nasutus) show home range values that are higher than expected relative to all other gibbon species. Predictive models incorporating intraspecific trait variation but controlling for covariance between population samples due to phylogenetic relatedness reveal additional environmental and biological determinants of variation in gibbon ranging requirements and social structure, but not those immediately associated with recent habitat degradation. CONCLUSIONS: Our study represents the first systematic assessment of behavioural and ecological trait patterns across the Hylobatidae using recent approaches in comparative analysis. By formally contextualising the Hainan gibbon's observed behavioural and ecological characteristics within family-wide variation in gibbons, we are able to determine natural population parameters expected for this Critically Endangered species, as well as wider correlates of variation for key population characteristics across the Hylobatidae. This approach reveals key insights with a direct impact on future Hainan gibbon conservation planning, and demonstrates the usefulness of the comparative approach for informing management of species of conservation concern.


Assuntos
Hylobates/genética , Animais , Conservação dos Recursos Naturais , Ecossistema , Espécies em Perigo de Extinção , Feminino , Masculino , Filogenia
16.
Arts Health ; 6(1): 24-58, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25621005

RESUMO

BACKGROUND: This study sought to determine the effects of a heritage-in-health intervention on well-being. Benefits of arts-in-health interventions are relatively well-documented yet little robust research has been conducted using heritage-in-health interventions, such as those involving museum objects. METHODS: Hospital patients (n = 57) participated in semi-structured, 30-40 minute facilitated interview sessions, discussing and handling museum objects comprising selections of six artefacts and specimens loaned from archaeology, art, geology and natural history collections. Well-being measures (Positive Affect Negative Affect Scale, Visual Analogue Scales) evaluated the sessions while inductive and deductive thematic analysis investigated psycho-educational features accounting for changes. RESULTS: Comparison of pre- and post-session quantitative measures showed significant increases in well-being and happiness. Qualitative investigation revealed thinking and meaning-making opportunities for participants engaged with objects. CONCLUSIONS: Heritage-in-health sessions enhanced positive mood and social interaction, endorsing the need for provision of well-being-related museum and gallery activities for socially excluded or vulnerable healthcare audiences.

17.
Perspect Public Health ; 133(1): 66-71, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23308010

RESUMO

The majority of public health programmes are based in schools, places of employment and in community settings. Likewise, nearly all health-care interventions occur in clinics and hospitals. An underdeveloped area for public health-related planning that carries international implications is the cultural heritage sector, and specifically museums and art galleries. This paper presents a rationale for the use of museums and art galleries as sites for public health interventions and health promotion programmes through discussing the social role of these organisations in the health and well-being of the communities they serve. Recent research from several countries is reviewed and integrated into a proposed framework for future collaboration between cultural heritage, health-care and university sectors to further advance research, policy development and evidence-based practice.


Assuntos
Arte , Relações Interinstitucionais , Administração em Saúde Pública , Cultura , Humanos
18.
J Pain Symptom Manage ; 44(5): 731-40, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22835481

RESUMO

CONTEXT: Nonpharmacological, arts-focused interventions in health care have demonstrated considerable improvements in cancer patient well-being, although there is a little clinically robust, empirical evidence to demonstrate the value of heritage-focused practices. OBJECTIVES: This study examined the effectiveness of a novel, nonpharmacological, heritage-focused intervention with adult female inpatients receiving cancer treatment in oncology wards of a large, central London hospital. METHODS: In the tactile experimental condition, participants handled and discussed a selection of museum objects with a facilitator, whereas in the visual control condition, participants discussed photographs of the same objects. Sessions were conducted on a one-to-one basis at patients' bedsides and lasted about half an hour. Quantitative measures of psychological well-being with proven reliability and validity were used in a pretest/post-test control group, quasi-experimental design. RESULTS: Levels of positive emotion, well-being, and happiness were significantly enhanced in the experimental condition compared with the control condition for both oncology and nononcology patients. CONCLUSION: Findings indicate a future role for heritage-focused practices in enhancing health care environments.


Assuntos
Neoplasias/psicologia , Neoplasias/terapia , Cuidados Paliativos/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Emoções , Família , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Museus , Reprodutibilidade dos Testes , Adulto Jovem
19.
J Anat ; 218(4): 386-401, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21323919

RESUMO

The morphology of postcranial articular surfaces is expected to reflect their weight-bearing properties, as well as the stability and mobility of the articulations to which they contribute. Previous studies have mainly confirmed earlier predictions of isometric scaling between articular surface areas and body mass; the exception to this is 'male-type', convex articular surface areas, which may scale allometrically due to differences in locomotor strategies within the analysed samples. In the present study, we used new surface scanning technology to quantify more accurately articular surface areas and to test those predictions within the talus of hominoid primates, including modern humans. Our results, contrary to predictions, suggest that there are no generalised rules of articular scaling within the talus of hominoids. Instead, we suggest that articular scaling patterns are highly context-specific, depending on the role of each articulation during locomotion, as well as taxon- and sex-specific differences in locomotion and ontogenetic growth trajectories within any given sample. While this may prove problematic for inferring body mass based on articular surface area, it also offers new opportunities of gaining substantial insights into the locomotor patterns of extinct species.


Assuntos
Primatas/anatomia & histologia , Tálus/anatomia & histologia , Anatomia Comparada , Animais , Articulação do Tornozelo/anatomia & histologia , Humanos , Imageamento Tridimensional
20.
BMC Evol Biol ; 9: 259, 2009 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-19860891

RESUMO

BACKGROUND: The primates are among the most broadly studied mammalian orders, with the published literature containing extensive analyses of their behavior, physiology, genetics and ecology. The importance of this group in medical and biological research is well appreciated, and explains the numerous molecular phylogenies that have been proposed for most primate families and genera. Composite estimates for the entire order have been infrequently attempted, with the last phylogenetic reconstruction spanning the full range of primate evolutionary relationships having been conducted over a decade ago. RESULTS: To estimate the structure and tempo of primate evolutionary history, we employed Bayesian phylogenetic methods to analyze data supermatrices comprising 7 mitochondrial genes (6,138 nucleotides) from 219 species across 67 genera and 3 nuclear genes (2,157 nucleotides) from 26 genera. Many taxa were only partially represented, with an average of 3.95 and 5.43 mitochondrial genes per species and per genus, respectively, and 2.23 nuclear genes per genus. Our analyses of mitochondrial DNA place Tarsiiformes as the sister group of Strepsirrhini. Within Haplorrhini, we find support for the primary divergence of Pitheciidae in Platyrrhini, and our results suggest a sister grouping of African and non-African colobines within Colobinae and of Cercopithecini and Papionini within Cercopthecinae. Date estimates for nodes within each family and genus are presented, with estimates for key splits including: Strepsirrhini-Haplorrhini 64 million years ago (MYA), Lemuriformes-Lorisiformes 52 MYA, Platyrrhini-Catarrhini 43 MYA and Cercopithecoidea-Hominoidea 29 MYA. CONCLUSION: We present an up-to-date, comprehensive estimate of the structure and tempo of primate evolutionary history. Although considerable gaps remain in our knowledge of the primate phylogeny, increased data sampling, particularly from nuclear loci, will be able to provide further resolution.


Assuntos
Filogenia , Primatas/classificação , Primatas/genética , Animais , Teorema de Bayes , Núcleo Celular/genética , Humanos , Mitocôndrias/genética , Análise de Sequência de DNA , Fatores de Tempo
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