Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 12 de 12
Filtrar
1.
BMC Public Health ; 24(1): 1742, 2024 Jun 29.
Artículo en Inglés | MEDLINE | ID: mdl-38951787

RESUMEN

BACKGROUND: Many women in low- and middle-income countries, including Kenya, access antenatal care (ANC) late in pregnancy. Home pregnancy testing can enable women to detect pregnancy early, but it is not widely available. Our study explored the acceptability and potential of home pregnancy testing delivered by community health volunteers (CHV) on antenatal care initiation in rural Kenya. METHODS: This study was part of a public health intervention to improve uptake and quality of ANC. Between November and December 2020, we conducted 37 in-depth interviews involving women who tested positive or negative for a urine pregnancy test provided by CHVs; CHVs and their supervisors involved in the delivery of the pregnancy tests; facility healthcare workers; and key informants. Using Sekhon et al.'s framework of acceptability, the interviews explored participants' perceptions and experiences of home pregnancy testing, including acceptability, challenges, and perceived effects on early ANC uptake. Data were analysed thematically in NVivo12 software. RESULTS: Home pregnancy testing was well-received by women who trusted test results and appreciated the convenience and autonomy it offered. Adolescents cherished the privacy, preferring home testing to facility testing which could be a stigmatising experience. Testing enabled earlier pregnancy recognition and linkage to ANC as well as reproductive decision-making for those with undesired pregnancies. Community delivery of the test enhanced the reputation and visibility of the CHVs as credible primary care providers. CHVs in turn were motivated and confident to deliver home pregnancy testing and did not find it as an unnecessary burden; instead, they perceived it as a complement to their work in providing ANC in the community. Challenges identified included test shortages, confidentiality and safeguarding risks, and difficulties accessing facility-based care post-referral. Newly identified pregnant adolescents hesitated to seek ANC due to stigma, fear of reprimand, unwanted parental notification, and perceived pressure from healthcare workers to keep the pregnancy. CONCLUSION: Home pregnancy testing by CHVs can improve early ANC initiation in resource-poor settings. Mitigating privacy, confidentiality, and safeguarding concerns is imperative. Additional support for women transitioning from pregnancy identification to ANC is essential to ensure appropriate care. Future research should focus on integrating home pregnancy testing into routine community health services.


Asunto(s)
Aceptación de la Atención de Salud , Pruebas de Embarazo , Atención Prenatal , Población Rural , Humanos , Femenino , Kenia , Embarazo , Adulto , Aceptación de la Atención de Salud/estadística & datos numéricos , Aceptación de la Atención de Salud/psicología , Adolescente , Adulto Joven , Agentes Comunitarios de Salud , Investigación Cualitativa , Entrevistas como Asunto , Servicios de Atención de Salud a Domicilio
2.
BMC Public Health ; 24(1): 1638, 2024 Jun 19.
Artículo en Inglés | MEDLINE | ID: mdl-38898512

RESUMEN

BACKGROUND: Stigma, lack of trust in authorities, and poor knowledge can prevent health-seeking behaviour, worsen physical and mental health, and undermine efforts to control transmission during disease outbreaks. These factors are particularly salient with diseases such as mpox, for which 96% of cases in the 2022-2023 UK outbreak were identified among gay, bisexual, queer and men who have sex with men (MSM). This study explored stigma and health-seeking behaviour in Liverpool through the lens of the recent mpox outbreak. METHODS: Primary sources of data were interviews with national and regional key informants involved in the mpox response, and participatory workshops with priority populations. Workshop recruitment targeted Grindr users (geosocial dating/hookup app) and at risk MSM; immigrant, black and ethnic minority MSM; and male sex workers in Liverpool. Data were analysed using a deductive framework approach, building on the Health Stigma and Discrimination Framework. RESULTS: Key informant interviews (n = 11) and five workshops (n = 15) were conducted. There were prevalent reports of anticipated and experienced stigma due to mpox public health messaging alongside high demand and uptake of the mpox vaccine and regular attendance at sexual health clinics. Respondents believed the limited impact of stigma on health-seeking behaviour was due to actions by the LGBTQ + community, the third sector, and local sexual health clinics. Key informants from the LGBTQ + community and primary healthcare felt their collective action to tackle mpox was undermined by central public health authorities citing under-resourcing; a reliance on goodwill; poor communication; and tokenistic engagement. Mpox communication was further challenged by a lack of evidence on disease transmission and risk. This challenge was exacerbated by the impact of the COVID-19 pandemic on the scientific community, public perceptions of infectious disease, and trust in public health authorities. CONCLUSIONS: The LGBTQ + community and local sexual health clinics took crucial actions to counter stigma and support health seeking behaviour during the 2022-2023 UK mpox outbreak. Lessons from rights based and inclusive community-led approaches during outbreaks should be heeded in the UK, working towards more meaningful and timely collaboration between affected communities, primary healthcare, and regional and national public health authorities.


Asunto(s)
Brotes de Enfermedades , Promoción de la Salud , Minorías Sexuales y de Género , Estigma Social , Confianza , Humanos , Masculino , Promoción de la Salud/métodos , Promoción de la Salud/organización & administración , Brotes de Enfermedades/prevención & control , Reino Unido/epidemiología , Minorías Sexuales y de Género/psicología , Minorías Sexuales y de Género/estadística & datos numéricos , Adulto , Homosexualidad Masculina/psicología , Homosexualidad Masculina/estadística & datos numéricos , Aceptación de la Atención de Salud/psicología , Aceptación de la Atención de Salud/estadística & datos numéricos , COVID-19/prevención & control , COVID-19/epidemiología , COVID-19/psicología , Investigación Cualitativa
3.
BMC Pregnancy Childbirth ; 24(1): 224, 2024 Mar 27.
Artículo en Inglés | MEDLINE | ID: mdl-38539129

RESUMEN

BACKGROUND: Early attendance at antenatal care (ANC), coupled with good-quality care, is essential for improving maternal and child health outcomes. However, achieving these outcomes in sub-Saharan Africa remains a challenge. This study examines the effects of a community-facility health system strengthening model (known as 4byFour) on early ANC attendance, testing for four conditions by four months of pregnancy, and four ANC clinic visits in Migori county, western Kenya. METHODS: We conducted a mixed methods quasi-experimental study with a before-after interventional design to assess the impact of the 4byFour model on ANC attendance. Data were collected between August 2019 and December 2020 from two ANC hospitals. Using quantitative data obtained from facility ANC registers, we analysed 707 baseline and 894 endline unique ANC numbers (attendances) based on negative binomial regression. Logistic regression models were used to determine the impact of patient factors on outcomes with Akaike Information Criterion (AIC) and likelihood ratio testing used to compare models. Regular facility stock checks were undertaken at the study sites to assess the availability of ANC profile tests. Analysis of the quantitative data was conducted in R v4.1.1 software. Additionally, qualitative in-depth interviews were conducted with 37 purposively sampled participants, including pregnant mothers, community health volunteers, facility staff, and senior county health officials to explore outcomes of the intervention. The interview data were audio-recorded, transcribed, and coded; and thematic analysis was conducted in NVivo. RESULTS: There was a significant 26% increase in overall ANC uptake in both facilities following the intervention. Early ANC attendance improved for all age groups, including adolescents, from 22% (baseline) to 33% (endline, p = 0.002). Logistic regression models predicting early booking were a better fit to data when patient factors were included (age, parity, and distance to clinic, p = 0.004 on likelihood ratio testing), suggesting that patient factors were associated with early booking.The proportion of women receiving all four tests by four months increased to 3% (27/894), with haemoglobin and malaria testing rates rising to 8% and 4%, respectively. Despite statistical significance (p < 0.001), the rates of testing remained low. Testing uptake in ANC was hampered by frequent shortage of profile commodities not covered by buffer stock and low ANC attendance during the first trimester. Qualitative data highlighted how community health volunteer-enhanced health education improved understanding and motivated early ANC-seeking. Community pregnancy testing facilitated early detection and referral, particularly for adolescent mothers. Challenges to optimal ANC attendance included insufficient knowledge about the ideal timing for ANC initiation, financial constraints, and long distances to facilities. CONCLUSION: The 4byFour model of community-facility health system strengthening has the potential to improve early uptake of ANC and testing in pregnancy. Sustained improvement in ANC attendance requires concerted efforts to improve care quality, consistent availability of ANC commodities, understand motivating factors, and addressing barriers to ANC. Research involving randomised control trials is needed to strengthen the evidence on the model's effectiveness and inform potential scale up.


Asunto(s)
Madres , Atención Prenatal , Femenino , Humanos , Embarazo , Kenia , Aceptación de la Atención de Salud , Primer Trimestre del Embarazo , Atención Prenatal/métodos
4.
Sci Total Environ ; 856(Pt 2): 159145, 2023 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-36206896

RESUMEN

A carbon footprint assessment, combining various scales of analysis and including a territorial assessment, is proposed to estimate the greenhouse gas (GHG) emissions from crops and livestock in an Indian village impacted by both Green (for crops) and White (for milk) revolutions. It is based on the GHG assessment of 10 cropping systems, 8 livestock farming systems and 9 production systems using the comparative agriculture and Life Cycle Assessment (LCA) approaches. Results show that mineral fertilisation, irrigation and methane from paddy fields are the main drivers of emissions at plot level. Livestock farming systems emit from 4.7 tCO2eq/female to 8.6 tCO2eq/female, enteric fermentation being the first source of emission. Disparities at farm level are huge, ranging from 9 to 733 tCO2eq. At village level, emissions yield 37 tCO2eq/ha and livestock contributes to 60 % of GHG emissions. The high GHG emissions are a legacy of the Green and White Revolutions: the livestock population is high, fed on highly emissive fodder and concentrates and produces little milk. The results enhance our understanding of the share of carbon emissions from crops and livestock at farm and territorial level. They pinpoint the environmental and socio-economic downsides of livestock farming intensification.


Asunto(s)
Gases de Efecto Invernadero , Femenino , Animales , Gases de Efecto Invernadero/análisis , Ganado , Agricultura/métodos , Productos Agrícolas , Metano/análisis
5.
BMC Public Health ; 22(1): 2362, 2022 12 16.
Artículo en Inglés | MEDLINE | ID: mdl-36527003

RESUMEN

BACKGROUND: New HIV infections in the Philippines are increasing at an alarming rate. However, over three quarters of men who have sex with men (MSM) have never been tested for HIV. HIV self-testing (HIVST) may increase overall testing rates by removing barriers, particularly fear of stigmatization and mistrust of providers. This study aimed to determine if these factors are associated with preference for HIVST among Filipino cisgender MSM (cis-MSM), and whether there is an interaction between anticipated HIV testing stigma and provider mistrust on preference for HIVST. METHODS: We conducted secondary analysis of a one-time survey of 803 cis-MSM who were recruited using purposive sampling from online MSM dating sites and MSM-themed bar locations in Metro Manila, Philippines. Summary statistics were computed to describe participant characteristics. Multivariable modified Poisson regression analyses were conducted to determine if anticipated HIV testing stigma and provider mistrust were associated with preference for HIVST among cis-MSM. Other variables such as age, education, monthly income, relationship status, HIV serostatus, and knowing where to get HIV testing were the minimal sufficient adjustment set in the analyses. RESULTS: Average age of participants was 28.6 years (SD = 8.0); most had received college degrees (73%) and were employed (80%). Most respondents (81%) preferred facility-based testing, while 19% preferred HIVST. A high percentage of participants reported anticipated HIV testing stigma (66%) and provider mistrust (44%). Anticipated HIV testing stigma (aPR = 1.51; 95% CI = 1.01-2.25, p = 0.046) and provider mistrust (aPR = 1.49; 95% CI = 1.07-2.09, p = 0.020) were independently associated with a preference for HIVST. There was a positive, additive interaction between provider mistrust and anticipated HIV testing stigma on preference for HIVST (RERI = 1.13, 95% CI: 0.20-2.06; p = 0.017), indicating that the association between anticipated HIV testing stigma and preference for HIVST is greater among those with provider mistrust compared to those without provider mistrust. CONCLUSIONS: HIVST should be offered as a supplement to traditional facility-based HIV testing services in the Philippines to expand testing and reach individuals who may not undergo testing due to anticipated HIV testing stigma and provider mistrust.


Asunto(s)
Infecciones por VIH , Minorías Sexuales y de Género , Masculino , Humanos , Adulto , VIH , Homosexualidad Masculina , Autoevaluación , Infecciones por VIH/diagnóstico , Filipinas , Prueba de VIH
6.
BMC Public Health ; 22(1): 330, 2022 02 16.
Artículo en Inglés | MEDLINE | ID: mdl-35172789

RESUMEN

BACKGROUND: Equitable access and high uptake of safe and effective vaccines is critical to ending the COVID-19 pandemic. To ensure the success of these vaccines, particularly in many developing and under-developed parts of the world, the concerns of local communities including fears, potency, and levels of acceptance should be addressed. This study assessed community stakeholders' perceptions in parts of Southeastern Nigeria about COVID-19 vaccine, towards engaging them effectively to ensure the success of the vaccination campaigns. METHODS: A qualitative study was conducted involving fourteen stakeholders from the Southeastern geo-political zone of Nigeria selected using purposive sampling. In-depth semi-structured individual interviews lasting about 30 min were used to collect data. Data analysis was informed by a general inductive approach. RESULTS: Stakeholders hoped that the development and roll out of the vaccines will bring COVID -19 to an end, will help to maintain good health and allow people get back to normal life. On the other hand, stakeholders expressed their concerns and worries about the "speed" with which the vaccines are being produced, possibility of future adverse effects from vaccination, misinformation, and level of preparedness in the health system to implement the vaccine campaign. CONCLUSIONS: This study identified that more needs to be done to improve perceptions of those who influence health decisions in communities towards COVID-19 vaccines. This includes firstly, the involvement of the community and religious leaders in vaccine promotion. Secondly, it is imperative to develop and disseminate persuasive messaging on vaccine effectiveness and safety targeted at both health professionals, policymakers, and the community which are culturally sensitive and address identified concerns among health workers. Thirdly, the health systems should be strengthened and system-level interventions that directly target one or more of the WHO's six health system building blocks: service delivery, health workforce, health information systems, access to essential medicines, financing, and leadership/governance.


Asunto(s)
COVID-19 , Vacunas , Vacunas contra la COVID-19 , Humanos , Nigeria , Pandemias , SARS-CoV-2 , Vacunación
7.
BMJ Glob Health ; 6(10)2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34615662

RESUMEN

INTRODUCTION: Disease-specific 'vertical' programmes and health system strengthening (HSS) 'horizontal' programmes are not mutually exclusive; programmes may be implemented with the dual objectives of achieving both disease-specific and broader HSS outcomes. However, there remains an ongoing need for research into how dual objective programmes are operationalised for optimum results. METHODS: A qualitative study encompassing four grantee programmes from two partner countries, Tanzania and Sierra Leone, in the Comic Relief and GlaxoSmithKline 'Fighting Malaria, Improving Health' partnership. Purposive sampling maximised variation in terms of geographical location, programme aims and activities, grantee type and operational sector. Data were collected via semi-structured interviews. Data analysis was informed by a general inductive approach. RESULTS: 51 interviews were conducted across the four grantees. Grantee organisations structured and operated their respective projects in a manner generally supportive of HSS objectives. This was revealed through commonalities identified across the four grantee organisations in terms of their respective approach to achieving their HSS objectives, and experienced tensions in pursuit of these objectives. Commonalities included: (1) using short-term funding for long-term initiatives; (2) benefits of being embedded in the local health system; (3) donor flexibility to enable grantee responsiveness; (4) the need for modest expectations; and (5) the importance of micro-innovation. CONCLUSION: Health systems strengthening may be pursued through disease-specific programme grants; however, the respective practice of both the funder and grantee organisation appears to be a key influence on whether HSS will be realised as well as the overall extent of HSS possible.


Asunto(s)
Programas de Gobierno , Malaria , Humanos , Malaria/prevención & control , Investigación Cualitativa , Sierra Leona , Tanzanía
8.
PLoS One ; 15(10): e0240514, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33057401

RESUMEN

Across Africa, malaria control programmes are increasingly challenged with the emergence of insecticide resistance among malaria vector populations. Confronted with this challenge, vector control staff must understand insecticide resistance management, think comprehensively and react positively when confronted with new problems. However, information on the subject is often only available through written guidelines that are difficult to put into practice. Based on the successes and strengths of educational games for health, we developed and evaluated a novel game-based course to fill the gap in training resources for insecticide resistance management. The training was evaluated by analysing results of pre- and post-course knowledge tests and self-efficacy surveys, as well as post-course interviews. At the start of the training, fundamental concepts of insecticide resistance were reviewed through Resistance101, a mobile app game. Subsequently, insecticide resistance management strategies were explored using the simulation game ResistanceSim, which was introduced by mini-lectures and complemented by class discussions and group work. The game-based training was conducted and evaluated in two African countries (Ethiopia and Zambia) using a mixed-methods approach. Quantitative outcome measures included knowledge acquisition and change in self-efficacy. We completed a qualitative inductive thematic analysis of participant interviews to explore the views and experiences of participants with the games and training, and the impact of the training on professional practices and attitudes. The game-based training increased knowledge in the short-term and improved self-efficacy scores. The training increased participants' knowledge base, stimulated knowledge sharing and changed work practices. The game-based training offers scalable training opportunities that could nurture and capacitate the next generation of professionals in vector control.


Asunto(s)
Anopheles/efectos de los fármacos , Teoría del Juego , Resistencia a los Insecticidas , Insecticidas/farmacología , Malaria/epidemiología , Malaria/prevención & control , Control de Mosquitos/métodos , Mosquitos Vectores/efectos de los fármacos , Animales , Etiopía/epidemiología , Humanos , Malaria/parasitología , Mosquitos Vectores/parasitología , Zambia/epidemiología
9.
BMC Public Health ; 20(1): 34, 2020 Jan 09.
Artículo en Inglés | MEDLINE | ID: mdl-31918706

RESUMEN

BACKGROUND: The Philippines is facing a rapidly rising HIV epidemic among young men who have sex with men (MSM). Testing rates among young populations is poor. HIV self-testing (HIVST) is a promising strategy to address this testing gap. The study's purpose was to explore the perceived acceptability, feasibility and programmatic challenges of HIVST among key informants and target users. METHOD: A qualitative study involving semi-structured interviews and focus group discussions (FGD). We interviewed 15 key informants involved with HIV testing programs or policies and 42 target users in six FGD in Metro Manila. We held separate discussions with high socio-economic MSM (n = 12), urban poor MSM (n = 15) and transgender women (TGW) (n = 15). Results were analysed using a thematic framework approach. RESULTS: MSM and TGW welcomed the convenience and privacy HIVST could provide. They preferred an inexpensive accurate blood-based kit attained from reputable sites. Key informants at national and local level equally welcomed HIVST but identified a number of policy and regulatory issues. Both groups articulated the challenge of enrolling those who test reactive using HIVST to further testing and treatment in an environment characterised by acute stigma around HIV. CONCLUSIONS: HIVST was found to be highly acceptable to target users and was welcomed as an additional testing approach at national level. Strategic alliances are now needed between stakeholders to proactively deliver a patient-centred HIVST program that could provide an effective, safe means of increasing testing coverage in this escalating context.


Asunto(s)
Infecciones por VIH/diagnóstico , Homosexualidad Masculina/psicología , Tamizaje Masivo/métodos , Aceptación de la Atención de Salud/estadística & datos numéricos , Personas Transgénero/psicología , Adolescente , Estudios de Factibilidad , Femenino , Grupos Focales , Infecciones por VIH/epidemiología , Homosexualidad Masculina/estadística & datos numéricos , Humanos , Masculino , Filipinas/epidemiología , Investigación Cualitativa , Personas Transgénero/estadística & datos numéricos , Adulto Joven
10.
JMIR Serious Games ; 7(4): e13695, 2019 Dec 20.
Artículo en Inglés | MEDLINE | ID: mdl-31859673

RESUMEN

BACKGROUND: Opportunities in digital distribution place mobile games as a promising platform for games for health. However, designing a game that can compete in the saturated mobile games market and deliver persuasive health messages can feel like an insurmountable challenge. Although user-centered design is widely advocated, factors such as the user's subject domain expertise, budget constraints, and poor data collection methods can restrict the benefits of user involvement. OBJECTIVE: This study aimed to develop a playable and acceptable game for health, targeted at young key populations in the Philippines. METHODS: Authors identified a range of user-centered design methods to be used in tandem from published literature. The resulting design process involved a phased approach, with 40 primary and secondary users engaged during the initial ideation and prototype testing stages. Selected methods included participatory design workshops, playtests, playability heuristics, and focus group discussions. Subject domain experts were allocated roles in the development team. Data were analyzed using a framework approach. Conceptual frameworks in health intervention acceptability and game design guided the analysis. In-game events were captured through the Unity Analytics service to monitor uptake and game use over a 12-month period. RESULTS: Early user involvement revealed a strong desire for online multiplayer gameplay, yet most reported that access to this type of game was restricted because of technical and economic constraints. A role-playing game (RPG) with combat elements was identified as a very appealing gameplay style. Findings guided us to a game that could be played offline and that blended RPG elements, such as narrative and turn-based combat, with match-3 puzzles. Although the game received a positive response during playtests, gameplay was at times perceived as repetitive and predicted to only appeal to casual gamers. Knowledge transfer was predominantly achieved through interpretation of the game's narrative, highlighting this as an important design element. Uptake of the game was positive; between December 1, 2017, and December 1, 2018, 3325 unique device installs were reported globally. Game metrics provided evidence of adoption by young key populations in the Philippines. Game uptake and use were substantially higher in regions where direct engagement with target users took place. CONCLUSIONS: User-centered design activities supported the identification of important contextual requirements. Multiple data collection methods enabled triangulation of findings to mediate the inherent biases of the different techniques. Game acceptance is dependent on the ability of the development team to implement design solutions that address the needs and desires of target users. If target users are expected to develop design solutions, they must have adequate expertise and a significant role within the development team. Facilitating meaningful partnerships between health professionals, the games industry, and end users will support the games for health industry as it matures.

11.
Malar J ; 17(1): 422, 2018 Nov 13.
Artículo en Inglés | MEDLINE | ID: mdl-30424788

RESUMEN

The use of insecticides is the cornerstone of effective malaria vector control. However, the last two decades has seen the ubiquitous use of insecticides, predominantly pyrethroids, causing widespread insecticide resistance and compromising the effectiveness of vector control. Considerable efforts to develop new active ingredients and interventions are underway. However, it is essential to deploy strategies to mitigate the impact of insecticide resistance now, both to maintain the efficacy of currently available tools as well as to ensure the sustainability of new tools as they come to market. Although the World Health Organization disseminated best practice guidelines for insecticide resistance management (IRM), Rollback Malaria's Vector Control Working Group identified the lack of practical knowledge of IRM as the primary gap in the translation of evidence into policy. ResistanceSim is a capacity strengthening tool designed to address this gap. The development process involved frequent stakeholder consultation, including two separate workshops. These workshops defined the learning objectives, target audience, and the role of mathematical models in the game. Software development phases were interspersed with frequent user testing, resulting in an iterative design process. User feedback was evaluated via questionnaires with Likert-scale and open-ended questions. The game was regularly evaluated by subject-area experts through meetings of an external advisory panel. Through these processes, a series of learning domains were identified and a set of specific learning objectives for each domain were defined to be communicated to vector control programme personnel. A simple "game model" was proposed that produces realistic outputs based on player strategy and also runs in real-time. Early testing sessions revealed numerous usability issues that prevented adequate player engagement. After extensive revisions, later testing sessions indicated that the tool would be a valuable addition to IRM training.


Asunto(s)
Anopheles/efectos de los fármacos , Juegos Experimentales , Resistencia a los Insecticidas , Malaria/prevención & control , Control de Mosquitos/métodos , Mosquitos Vectores/efectos de los fármacos , Animales , Teoría del Juego , Humanos , Insecticidas/farmacología
12.
J Exp Biol ; 217(Pt 6): 944-54, 2014 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-24198259

RESUMEN

During a tandem run, a single leading ant recruits a single follower to an important resource such as a new nest. To examine this process, we used a motorized gantry, which has not previously been used in ant studies, to track tandem running ants accurately in a large arena and we compared their performance in the presence of different types of landmark. We interrupted tandem runs by taking away the leader and moved a large distant landmark behind the new nest just at the time of this separation. Our aim was to determine what information followers might have obtained from the incomplete tandem run they had followed, and how they behaved after the tandem run had been interrupted. Our results show that former followers search by using composite random strategies with elements of sub-diffusive and diffusive movements. Furthermore, when we provided more landmarks former followers searched for longer. However, when all landmarks were removed completely from the arena, the ants' search duration lasted up to four times longer. Hence, their search strategy changes in the presence or absence of landmarks. Even after extensive search of this kind, former followers headed back to their old nest but did not return along the path of the tandem run they had followed. The combination of the position to which the large distant landmark behind the new nest was moved and the presence or absence of additional landmarks influenced the orientation of the former followers' paths back to the old nest. We also found that these ants exhibit behavioural lateralization in which they possibly use their right eye more than their left eye to recognize landmarks for navigation. Our results suggest that former follower ants learn landmarks during tandem running and use this information to make strategic decisions.


Asunto(s)
Hormigas/fisiología , Fenómenos de Retorno al Lugar Habitual , Animales , Locomoción , Orientación , Carrera , Conducta Social
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...