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1.
Eur J Investig Health Psychol Educ ; 14(4): 823-837, 2024 Mar 25.
Article in English | MEDLINE | ID: mdl-38667808

ABSTRACT

The Volunteer Functions Inventory (VFI) is an instrument widely used to assess volunteers' motivation based on the Functionalist Model of Omoto and Snyder. It assesses six factors that reflect several motivational functions. The VFI has been translated into various languages and validated in different cultural contexts, but some studies have reported different factor structures (e.g., five or four factors). In the Portuguese context, previous studies have also shown inconsistent results. The aim of this study was to adapt and validate the VFI for Portuguese volunteers, testing several alternative models (nine models) using confirmatory factor analysis. The sample comprised 468 volunteers (76.3% women), aged from 13 to 81 years (M = 36.66, SD = 14.93). The results support the original interrelated six-factor model as the best-fitting one. The VFI showed good internal consistency and convergent validity. Significant correlations were found between the VFI factors, organizational commitment, and volunteers' satisfaction. Overall, the six-factor VFI is a valid and reliable tool for measuring the motivational functions of Portuguese volunteers, with implications for practice and research in the volunteering field.

2.
Eur J Investig Health Psychol Educ ; 14(4): 954-962, 2024 Apr 04.
Article in English | MEDLINE | ID: mdl-38667817

ABSTRACT

Preventing suicide has been a worldwide imperative for the last decade. Accurately assessing suicide risk is the first step towards prevention, and access to reliable tools that measure risk factors is essential to achieve this goal. The Positive And Negative Suicidal Ideation (PANSI) scale is a validated brief suicidal ideation scale that could prove useful to this goal due to its ability to measure both suicide risk and protective factors. The PANSI scale has been adapted to various languages and cultures across various clinical and non-clinical populations. Despite this, no Portuguese has been produced yet. The present study aimed to validate a Portuguese version of PANSI by evaluating its psychometric properties in a sample of 259 young adults. Confirmatory factor analysis showed that the PANSI showed good psychometric properties (TLI = 0.95), good reliability for positive ideation (α = 0.84), and excellent reliability for negative ideation (α = 0.96). The scale also showed good discriminative ability through prediction of a previous suicide attempt and good construct validity in both subscales. The Portuguese adaptation of the PANSI scale is a reliable measure of positive and negative suicidal ideation that could prove useful in both clinical and research settings.

3.
Eur J Investig Health Psychol Educ ; 14(4): 1002-1011, 2024 Apr 10.
Article in English | MEDLINE | ID: mdl-38667820

ABSTRACT

Suicide worldwide is an issue that needs to be addressed, and adolescents are an at-risk group. Assessing suicidal ideation is central to tackling the issue of suicide. The Positive and Negative Suicidal Ideation inventory is a widely validated measure of suicidal ideation, and yet, very little is known about its invariance across various groups. The present study aimed to adapt and test the PANSI's structure in a Portuguese sample while testing its gender invariance. A total of 750 middle and high school students were recruited for the study, and data were collected on various suicide risk and protective factors, including the Portuguese-translated PANSI. Data were put through exploratory and confirmatory factor analysis. Kaiser's criterion and scree plot both extracted two factors (64.10% variance explained). Confirmatory factor analysis also supported the PANSI's structure (TLI = 0.943). The PANSI showed good reliability (α ≥ 0.83) and good construct and discriminative validity. The PANSI also exhibited scalar, but not strict, invariance. Overall, these results were similar to previous versions of this scale. The PANSI is a reliable measure of suicide risk among Portuguese adolescents. Future studies should further replicate these results in other cultures and expand on them by testing for invariance across other demographic variables.

4.
Soa Chongsonyon Chongsin Uihak ; 34(4): 250-257, 2023 Oct 01.
Article in English | MEDLINE | ID: mdl-37841492

ABSTRACT

Objectives: Adolescents are at risk of suicide. As suicide is a multifactorial process, risk and protective factors are relevant constructs for suicide prediction. This study explored the effects of risk and protective factors on suicidal ideation in adolescents on the island of São Miguel (Azores). Methods: A sample of 750 adolescents (male: n=358; 47.7%; mean age=14.67 years; standard deviation=1.85 years) from the island of São Miguel (Azores) completed several measures related to suicidal ideation and associated factors. Using a cross-sectional design, this study conducted descriptive, correlational, predictive, mediation, and moderation analyses. Results: Adolescents generally displayed high levels of risk and protective factors; an indicative proportion exhibited significant suicidal ideation with females presenting the greatest vulnerability. Furthermore, the results highlight that depression is the best predictor of suicidal ideation, however, the association between these variables is mediated. Conclusion: The data corroborate that the suicidal reality of adolescents in the Autonomous Region of the Azores is worrisome. Having substantiated the complexity of the suicidal context in young people in the present research, the need to continue studying risk/protective factors in this area is supported.

5.
Healthcare (Basel) ; 11(19)2023 Oct 01.
Article in English | MEDLINE | ID: mdl-37830700

ABSTRACT

Adolescents are characterized as a risk group for suicide, being the fourth leading cause of death in young people. The main aim was to compare vulnerability to suicidal ideation in a sample of young people with and without psychosocial risk. The total sample consisted of 137 adolescents, aged between 10 and 19 years (M = 14.76; SD = 1.40), and it was composed of two groups-the psychosocial risk group (n = 60) and general population group (n = 77). In both groups, suicidal ideation correlated positively with negative events and negatively with self-esteem and social support satisfaction. When comparing the two groups, the psychosocial risk group presented significantly higher mean values of negative life events (mainly separations/losses and physical and sexual abuse) and significantly lower mean values of satisfaction with social support (particularly with family and social activities). It was also found that, in the psychosocial risk group, negative life events were the only significant predictors of suicidal ideation. This study allowed identifying the role of risk and protective factors in suicidal ideation, according to the psychosocial risk of adolescents. The practical implications of the findings on adolescents' mental health and the promotion of their well-being are discussed.

6.
Int J Offender Ther Comp Criminol ; : 306624X221106333, 2022 Jun 20.
Article in English | MEDLINE | ID: mdl-35723515

ABSTRACT

Mindfulness-based interventions (MBIs) in prison environments have revealed positive benefits for prisoners' physical and psychological health. This study aimed to verify the efficacy of an MBI program in decreasing depressive symptoms, anxiety, stress, negative effects, and increasing positive affects, self-esteem, and mindfulness state and capacity in prisoners. The sample comprised 44 Portuguese male prisoners, who were divided into two groups: the mindfulness training group (n = 22) and the control group (n = 22). The mindfulness training group demonstrated increased self-esteem and mindfulness capacities. Qualitative analysis showed the usefulness of the training for inmates, not only in their daily prison life, but also post-release and the importance of breathing in coping with anxious and stressful situations. These findings suggest the benefits of MBI in prison settings and propose that these interventions may hold the potential to improve prisoners' reintegration into society.

7.
Children (Basel) ; 9(2)2022 Jan 31.
Article in English | MEDLINE | ID: mdl-35204894

ABSTRACT

The study aims to describe the parental use of an online parenting support programme, the 'Open Window to Family' (JAF) and to evaluate its impact on perceived children's quality of life (QoL). This programme makes online resources available to support positive parenting. The study included 363 parents (nintervention group = 142) who completed measures to evaluate their children's QoL. The results suggest that using the programme for a longer time and accessing more information/services are positively related to the perception of utility but not to the frequency of use. The programme proved to be more useful for specific difficulties and to search for specific information. We found high levels of parental perception of children's well-being, both physical and psychological, and lower values in social support and relationships with peers. No differences were observed between the total QoL of children in the intervention group and control group. The differences in the dimensions of QoL are due to interaction with the level of education of the mother: mothers with higher education reported higher physical well-being, social support, relationships with peers, and school context. Guidelines are suggested to enhance the accessibility of this type of programme as well as enhance its impact on parents and children.

8.
Omega (Westport) ; 85(4): 887-903, 2022 Sep.
Article in English | MEDLINE | ID: mdl-32938306

ABSTRACT

A main protective factor against suicide in young adults is their reasons for living; therefore, suicide risk screening should consider these reasons. However, few psychometric instruments assess reasons for living, and none have been adapted for young adults in Portugal. Thus, we assess the psychometric characteristics of the Reasons for Living Inventory for Young Adults-II (RFL-YA-II) in participants (n = 936; Mage = 21.77; SD = 2.88) from Portugal. Participants answered measures concerning suicidal ideation, depression, hopelessness, and positive and negative affect. The results of an exploratory factorial analysis replicated the original 4-factor model of the RFL-YA-II, and a confirmatory factorial analysis indicated satisfactory indices. In terms of reliability and convergent, discriminant, and concurrent validity, our results are consistent with previous research. Moreover, our results indicate that the RFL-YA-II is a valid and reliable instrument to study the protective factors against suicidal behavior in Portuguese young adults, and should thus be integrated into preventive strategies.


Subject(s)
Suicide Prevention , Humans , Portugal , Psychometrics , Reproducibility of Results , Suicidal Ideation , Surveys and Questionnaires , Young Adult
9.
Children (Basel) ; 8(9)2021 Sep 04.
Article in English | MEDLINE | ID: mdl-34572209

ABSTRACT

Perfectionism is a significant transdiagnostic process related to the development and maintenance of several psychological disorders. The main models of the development of perfectionism focus on early childhood experiences and postulate that parental relation is an important factor for understanding this construct in children. The purpose of this study was to examine the relationship between child and parental perfectionism, seeking to evaluate the empirical support of the Social Learning Model and the Social Expectations Model and children's perception of parenting styles. The present study included 119 children (51.2% girls, Mage = 11.67 years) and their parents. Data were collected through administration of several self-report measures. The results show a relationship between the majority of the same parent and child perfectionism dimensions, thus providing supportive evidence for the Social Learning Model. Concerning the analysis of the role of gender in the transmission of perfectionism, observed fathers' perfectionism only relates with the sons' perfectionism, and mothers' perfectionism relates with daughters' perfectionism. Our findings allow for a deeper understanding of the role of the perception of an authoritarian parenting style in the development of maladaptive perfectionism. Mother and fathers' perceived parenting styles contribute more to daughter than son perfectionism. The results contribute to expanding the understanding of the role of parental factors in the development of perfectionism.

10.
Eat Weight Disord ; 26(3): 789-795, 2021 Apr.
Article in English | MEDLINE | ID: mdl-32356144

ABSTRACT

PURPOSE: Disordered eating symptoms and a high prevalence of orthorexia nervosa can be found in yoga practitioners. Given that yoga is increasingly used as a complementary treatment for eating disorders (ED), understanding the relationship between yoga practice and the development of disordered eating is crucial to guide treatment recommendations. The goal of this work is, therefore, to study the relationships between orthorexia nervosa (ON) and potential risk factors for ON, in an international sample of experienced yoga practitioners. METHOD: An online questionnaire that included several psychometric instruments was responded by 469 yoga practitioners. Instruments used were the Teruel orthorexia scale, Yoga immersion scale, Passion scale, Frost multidimensional perfectionism scale, Self-discipline scale of NEO-PI-R, Drive for thinness scale of EDI, and Beliefs about appearance scale. Descriptive statistics, correlational analysis and multiple regression were used to evaluate relationships between ON and the other variables. RESULTS: The main predictors of orthorexia nervosa were the drive for thinness and a healthy orthorexia, suggesting that, like in anorexia and bulimia, orthorexic individuals are also concerned with food quantity and physical appearance, rather than just food quality. CONCLUSIONS: The potential effects of yoga on eating behaviours and attitudes of long-term practitioners, particularly the high prevalence of orthorexia nervosa and the concern for physical appearance, should be taken into consideration when using yoga as prevention or treatment for eating disorders. LEVEL OF EVIDENCE: Level V, descriptive cross-sectional study.


Subject(s)
Feeding and Eating Disorders , Yoga , Attitude , Cross-Sectional Studies , Feeding and Eating Disorders/therapy , Humans , Personality
11.
Omega (Westport) ; 82(4): 527-547, 2021 Mar.
Article in English | MEDLINE | ID: mdl-30577719

ABSTRACT

Reasons for living are protective factors against suicidal behavior in adolescents. One of the most useful measures to assess them is the Reasons for Living Inventory for Adolescents (RFL-A) developed by Osman et al. The goal of this study was to examine the psychometric properties of its Portuguese version of the RFL-A. To this end, we recruited 512 high school adolescents (mean age = 16.7 years), who completed the RFL-A, a Suicidal Ideation Questionnaire, and a hopelessness scale. Exploratory factor analysis replicated the original five-factor model and confirmatory factor analysis obtained satisfactory adjustment values. The RFL-A shows good reliability (internal consistency and temporal stability) as well as good convergent, discriminant, and concurrent validities. These results indicate that the RFL-A is a valid and reliable measure to study protective factors against suicidal behaviors in Portuguese adolescents.


Subject(s)
Suicide , Adolescent , Humans , Portugal , Psychometrics , Reproducibility of Results , Suicidal Ideation
12.
Eat Weight Disord ; 24(6): 1015-1024, 2019 Dec.
Article in English | MEDLINE | ID: mdl-31016608

ABSTRACT

PURPOSE: Yoga has been increasingly used as a complementary therapy for eating disorders. However, it is still not clear whether yoga is effective in the prevention and treatment of eating disorders, as some studies suggest that yoga practitioners show elevated levels of disordered eating behaviours. The goal of this systematic review is, thus, to analyse the occurrence of disordered eating behaviours and correlates in yoga practitioners. METHOD: PRISMA guidelines for systematic reviews were used. Search was conducted in several databases and specific journals. RESULTS: Twelve articles, all cross-sectional, were identified, following PRISMA guidelines. Results across studies were inconsistent. Yoga practice was usually associated with healthier eating behaviours, lower disordered eating symptoms, and higher positive body image and body satisfaction, suggesting that yoga practitioners may be at a lower risk of developing eating disorders. However, other studies suggested that a high dosage of yoga practice may be associated with a higher prevalence of disordered eating behaviours. CONCLUSIONS: As yoga is increasingly used as therapy for eating disorders, understanding the relationship between yoga dosage and disordered eating behaviours is critical to guide treatment recommendations and establish yoga as a valuable complementary therapy. LEVEL OF EVIDENCE: Level I, systematic review.


Subject(s)
Feeding Behavior , Feeding and Eating Disorders/epidemiology , Yoga , Body Dissatisfaction , Body Image , Complementary Therapies , Feeding and Eating Disorders/therapy , Humans
13.
Open educational resource in Portuguese | CVSP - Regional | ID: oer-3794

ABSTRACT

Vídeo elaborado para instruir as gestantes sobre as síndromes causadas através do consumo de bebias alcoólicas durante a gravidez.


Subject(s)
Prenatal Nutrition , Alcohol Drinking , Pregnancy Complications
14.
Psychiatry Res ; 269: 244-250, 2018 11.
Article in English | MEDLINE | ID: mdl-30153603

ABSTRACT

The deconstruction of sleep quality into its particular components may help to specify how each one of them influences mental health. Thus, to detail the understanding of the relationship between sleep quality and mental health, our study aims to assess the relationship between each component of the Pittsburgh Sleep Quality Index (PSQI) and depression, anxiety and stress. Also, we intend to analyse the moderating effects of gender, age and country on these relationships. The instruments PSQI and Depression Anxiety Stress Scale (DASS-21) were applied to a non-clinical population of 1552 participants from three different countries (Portugal, Spain and Brazil), aged over 18 years old. We estimated a multivariate regression model with AMOS Graphic 21.0 to test the seven proposed research hypotheses. The adjusted model explains 14.0%, 21.0% and 19.3% of the variances of depression, anxiety and stress, respectively. The conclusion of this study demonstrates that, with the exception of subjective sleep quality, all the other six components of the PSQI individually relate to mental health in non-clinical populations and that country is a significant moderator of these relationships.


Subject(s)
Mental Health , Sleep Wake Disorders/diagnosis , Sleep Wake Disorders/epidemiology , Sleep/physiology , Surveys and Questionnaires/standards , Adolescent , Adult , Aged , Anxiety/diagnosis , Anxiety/epidemiology , Anxiety/psychology , Brazil/epidemiology , Depression/diagnosis , Depression/epidemiology , Depression/psychology , Female , Humans , Male , Middle Aged , Portugal/epidemiology , Sleep Wake Disorders/psychology , Spain/epidemiology , Young Adult
15.
Sleep Med ; 46: 69-73, 2018 06.
Article in English | MEDLINE | ID: mdl-29773214

ABSTRACT

INTRODUCTION: Sleep quality relates to mental health in clinical and non-clinical populations. However, there is more evidence of this relationship in clinical populations. Therefore, there is lack of evidence on how these variables relate and on which sociodemographic factors influence this relationship in non-clinical populations. In this study we hypothesize that in a non-clinical population sleep quality predicts mental health indicators and that age, country and gender moderate this relationship. METHODS: In a sample of 1552 subjects from Portugal, Spain and Brazil, self-reported sleep quality and mental health indicators were assessed through the Pittsburgh Sleep Quality Index and the Depression, Anxiety and Stress Scale-21, respectively. A multivariate linear regression model was used to test the research hypotheses. RESULTS: This adjusted model explained 10.1%, 12.3% and 13.1% of the variability of Depression, Anxiety and Stress, respectively, suggesting multiple sources of variance. CONCLUSIONS: Our results confirmed that sleep quality predicts mental health in non-clinical populations, and that the variable country is a significant moderator of this relationship.


Subject(s)
Anxiety/psychology , Depression/psychology , Mental Health , Sleep/physiology , Stress, Psychological/psychology , Adult , Brazil , Female , Humans , Male , Portugal , Self Report , Spain , Surveys and Questionnaires
16.
Psicol. reflex. crit ; 25(3): 514-522, 2012. tab
Article in Portuguese | Index Psychology - journals | ID: psi-57654

ABSTRACT

As relações estabelecidas no seio familiar são extremamente importantes no desenvolvimento dos traços de personalidade dos indivíduos. O objectivo deste estudo foi investigar a relação entre o desenvolvimento do perfeccionismo e as representações de vinculação, numa amostra de 690 jovens adultos, com idades entre os 17 e os 30 anos. Os participantes preencheram um Questionário Sócio-Demográfico, duas Escalas Multidimensionais de Perfeccionismo (MPS-F e MPS-H) e um Inventário de Vinculação (IPPA). Os resultados indicam a existência de uma relação entre as dimensões maladaptativas do perfeccionismo e a representação de uma Vinculação Insegura à mãe e ao pai, enquanto as dimensões adaptativas do perfeccionismo relacionam-se com a representação de uma Vinculação Segura. Estes resultados sugerem que um dos factores que contribuem para o desenvolvimento do perfeccionismo é a natureza das relações parentais e consequentes interacções.(AU)


The relationships established within the family are extremely important in the development of individual personality traits. The goal of this study was to investigate the relation between the development of perfectionism and attachment representations in a sample of 690 young adults, aged between 17 and 30 years old. Participants completed two scales of Self-report Measure of Perfectionism (H-MPS and F-MPS) and the Inventory of Parent and Peer Attachment (IPPA), as well as a Social-Demographic Questionnaire. Results indicate the existence of a relation between maladaptive perfectionism dimensions and an insecure attachment representation to parents, whereas adaptive perfectionism dimensions seem to be related to a secure attachment representation. The results suggest that one of the contributing factors to the development of perfectionism is the nature of parental relationships and their consequent interactions.(AU)


Subject(s)
Humans , Male , Female , Adolescent , Young Adult , Adult , Personality , Object Attachment , Parent-Child Relations
17.
Psicol. reflex. crit ; 25(3): 514-522, 2012. tab
Article in Portuguese | LILACS | ID: lil-653622

ABSTRACT

As relações estabelecidas no seio familiar são extremamente importantes no desenvolvimento dos traços de personalidade dos indivíduos. O objectivo deste estudo foi investigar a relação entre o desenvolvimento do perfeccionismo e as representações de vinculação, numa amostra de 690 jovens adultos, com idades entre os 17 e os 30 anos. Os participantes preencheram um Questionário Sócio-Demográfico, duas Escalas Multidimensionais de Perfeccionismo (MPS-F e MPS-H) e um Inventário de Vinculação (IPPA). Os resultados indicam a existência de uma relação entre as dimensões maladaptativas do perfeccionismo e a representação de uma Vinculação Insegura à mãe e ao pai, enquanto as dimensões adaptativas do perfeccionismo relacionam-se com a representação de uma Vinculação Segura. Estes resultados sugerem que um dos factores que contribuem para o desenvolvimento do perfeccionismo é a natureza das relações parentais e consequentes interacções.


The relationships established within the family are extremely important in the development of individual personality traits. The goal of this study was to investigate the relation between the development of perfectionism and attachment representations in a sample of 690 young adults, aged between 17 and 30 years old. Participants completed two scales of Self-report Measure of Perfectionism (H-MPS and F-MPS) and the Inventory of Parent and Peer Attachment (IPPA), as well as a Social-Demographic Questionnaire. Results indicate the existence of a relation between maladaptive perfectionism dimensions and an insecure attachment representation to parents, whereas adaptive perfectionism dimensions seem to be related to a secure attachment representation. The results suggest that one of the contributing factors to the development of perfectionism is the nature of parental relationships and their consequent interactions.


Subject(s)
Humans , Male , Female , Adolescent , Young Adult , Object Attachment , Parent-Child Relations , Personality
18.
Rev Inst Med Trop Sao Paulo ; 50(3): 187-90, 2008.
Article in English | MEDLINE | ID: mdl-18604418

ABSTRACT

We detected Toxoplasma gondii oocysts in feces of experimentally infected cats, using a Kato Katz approach with subsequent Kinyoun staining. Animals serologically negative to T. gondii were infected orally with 5 x 10(2) mice brain cysts of ME49 strain. Feces were collected daily from the 3rd to the 30th day after challenge. Oocysts were detected by qualitative sugar flotation and the quantitative modified Kato Katz stained by Kinyoun (KKK). In the experimentally infected cats, oocysts were detected from the 7th to 15th day through sugar flotation technique, but oocysts were found in KKK from the 6th to 16th day, being sensitive for a larger period, with permanent documentation. The peak of oocysts excretion occurred between the 8th to 11th days after challenge, before any serological positive result. KKK could be used in the screening and quantification of oocysts excretion in feces of suspected animals, with reduced handling of infective material, decreasing the possibility of environmental and operator contamination.


Subject(s)
Feces/parasitology , Oocysts , Toxoplasma/isolation & purification , Toxoplasmosis, Animal/parasitology , Animals , Cats , Parasite Egg Count/methods , Parasite Egg Count/veterinary , Staining and Labeling/methods , Staining and Labeling/veterinary , Time Factors
19.
Rev. Inst. Med. Trop. Säo Paulo ; 50(3): 187-190, May-June 2008. ilus, graf
Article in English | LILACS | ID: lil-485625

ABSTRACT

We detected Toxoplasma gondii oocysts in feces of experimentally infected cats, using a Kato Katz approach with subsequent Kinyoun staining. Animals serologically negative to T. gondii were infected orally with 5x10² mice brain cysts of ME49 strain. Feces were collected daily from the 3rd to the 30th day after challenge. Oocysts were detected by qualitative sugar flotation and the quantitative modified Kato Katz stained by Kinyoun (KKK). In the experimentally infected cats, oocysts were detected from the 7th to 15th day through sugar flotation technique, but oocysts were found in KKK from the 6th to 16th day, being sensitive for a larger period, with permanent documentation. The peak of oocysts excretion occurred between the 8th to 11th days after challenge, before any serological positive result. KKK could be used in the screening and quantification of oocysts excretion in feces of suspected animals, with reduced handling of infective material, decreasing the possibility of environmental and operator contamination.


Detectamos oocistos de Toxoplasma gondii em fezes de gatos experimentalmente infectados, usando a abordagem de Kato Katz, com subseqüente coloração pelo método de Kinyoun. Animais sorologicamente negativos ao T. gondii foram infectados por via oral com 5x10² cistos da cepa ME49 de cérebros de camundongos. Fezes foram colhidas diariamente a partir do 3º até o 30º dia pós-infecção. Oocistos foram detectados por centrífugo-flutuação em sacarose qualitativa e pelo método quantitativo de Kato Katz modificado corado pela técnica de Kinyoun (KKK). Em gatos experimentalmente infectados, oocistos foram detectados do 7º ao 15º dia pela técnica de centrífugo-flutuação em sacarose, mas oocistos foram detectados do 6º ao 16º dia pelo KKK, sendo sensível por um período maior, com documentação permanente. O pico da excreção de oocistos ocorreu entre 8º a 11º dia pós-infecção, antes de resultado sorológico positivo. KKK pode ser utilizado na triagem e quantificação da excreção de oocistos em fezes de animais suspeitos, com redução da manipulação de material infectante, diminuindo a possibilidade de contaminação ambiental e do operador.


Subject(s)
Animals , Cats , Feces/parasitology , Oocysts , Toxoplasma/isolation & purification , Toxoplasmosis, Animal/parasitology , Parasite Egg Count/methods , Parasite Egg Count/veterinary , Staining and Labeling/methods , Staining and Labeling/veterinary , Time Factors
20.
Mundo saúde (Impr.) ; 28(4): 450-455, out.-dez. 2004. mapas, tab, graf
Article in Portuguese | LILACS | ID: lil-398704

ABSTRACT

Neste trabalho foi avaliada a qualidade dos sedimentos provenientes de dois bosques de mangue situados em Itanhaém: um junto ao Rio do poço, próximo de um lixão, e outro junto ao Rio Itanhaém. Foram observadas também algumas relações entre contaminação dos sedimentos e o acúmulo de metais em caranguejos da espécie Ucides cordatus. Nos dois locais analisados, os sedimentos apresentaram teores altos de arsênio, chegando a ultrapassar valores de TEL. Além disso, as amostras causaram diminuição significativa na fecundidade do copépodo Nitoka sp. A toxicidade crônica dos sedimentos pareceu dever-se à contaminação por Ar, sendo que as amostras coletadas próximo ao Rio do poço foram mais tóxicas que as coletadas junto ao Rio Itanhahém. Os caranguejos coletados nos dois sítios apresentaram altos teores de Ar em seus tecidos, chegando a 259 mg/g, corroborando os dados ecotoxicológicos na determinação da biodisponibilidade dos contaminantes e indicando um risco à saúde pública, pois os caranguejos são consumidos pela população local. Os resultados sugerem que a contaminação provém de um lixão, porém novos estudos são necessários, visando estimar com exatidão a qualidade dos sedimentos, a possível influência desse lixão sobre o ambiente local e ainda avaliar os riscos para a população que consome regularmente essa espécie.


Subject(s)
Environment , Metals, Heavy/toxicity , Toxicology
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