Community Sample Research Articles

Profiles of executive functions in middle childhood and prediction of later self-regulation.

Most research on the development of executive functions (EF) has applied variable-oriented approaches, neglecting the potential inter- and intraindividual interplay of these capacities. In a person-oriented approach, the present study identified varying profiles of performance for three cool EF facets: inhibition, working-memory updating, and cognitive flexibility, as well as two hot EF facets: affective decision-making and delay of gratification, in a community sample of 1,657 children (T1; age: 6-11 years, M = 8.36 years, 52.1% female) via latent profile analysis. The best-fitting model allowed for partial dependence across the three cool EF and included four profiles: all-average (69.4% of the children), low-delay (19.0%), regulated-decision-making (7.0%), and low-inhibition (4.6%). Age, binary sex, socio-economic status, multilingualism, and processing speed were identified as significant characteristics of EF profile membership. Longitudinally, a higher probability of belonging to the low-inhibition profile predicted lower rates of the self-regulatory outcome of inhibitory control 1 year later, while belonging to the regulated-decision-making profile predicted lower rates of the ability to plan and organize 3 years later. These results not only demonstrate the existence of subgroups with different concurrent within-person expressions of EF performance, but also identify related characteristics and longitudinal outcomes of subgroup membership. In turn, these conclusions stress the importance of person-oriented research to inform on differing weaknesses or strengths in EF performance for varying individuals, thereby providing valuable insight for educational and clinical research into the design of effective personalized support or interventions during middle childhood.

The reflective function questionnaire for youth: Hungarian adaptation and evaluation of associations with quality of life and psychopathology.

An important correlate of mental health problems is mentalizing capacity, which appears to be particularly influential during adolescence. However, quality of life has not been studied in relation to mentalizing capacity among adolescents. This study aimed to translate the Reflective Function Questionnaire for Youth (RFQY) into Hungarian, present its psychometric properties, and assess its relationship with demographic characteristics, psychopathology and quality of life. A community sample of 384 youths aged 12-18 years completed the RFQY, the Measure of Quality of Life for Children and Adolescents, and the Strengths and Difficulties Questionnaire. First, we conducted an exploratory factor analysis with direct oblimin rotation on the RFQY items. Next, we assessed the associations between the RFQY and demographics, quality of life, and psychopathology. The EFA resulted in four factors: Internal-self, Internal-other, Self-other, and Strong emotions. The Cronbach's alpha coefficients of the scales were .81, .82, .67, and .80, respectively. The subscales were uniquely associated with psychopathology and quality of life. Our study provides the first psychometric support for the Hungarian version of the RFQY and indicates that adolescents suffering from internalizing, externalizing symptoms or lower levels of quality of life could benefit from interventions aimed at enhancing mentalizing capacity.

Understanding empathy deficits and emotion dysregulation in psychopathy: The mediating role of alexithymia.

Psychopathy is a severe personality disorder marked by a wide range of emotional deficits, including a lack of empathy, emotion dysregulation, and alexithymia. Previous research has largely examined these emotional impairments in isolation, ignoring their influence on each other. Thus, we examined the concurrent interrelationship between emotional impairments in psychopathy, with a particular focus on the mediating role of alexithymia. Using path analyses with cross-sectional data from a community sample (N = 315) and a forensic sample (N = 50), our results yielded a statistically significant mediating effect of alexithymia on the relationship between psychopathy and empathy (community and forensic) and between psychopathy and emotion dysregulation (community). Moreover, replacing psychopathy with its three dimensions (i.e., meanness, disinhibition, and boldness) in the community sample revealed that boldness may function as an adaptive trait, with lower levels of alexithymia counteracting deficits in empathy and emotion dysregulation. Overall, our findings indicate that psychopathic individuals' limited understanding of their own emotions contributes to their lack of empathy and emotion dysregulation. This underscores the potential benefits of improving emotional awareness in the treatment of individuals with psychopathy.

Urinary Incontinence in Active Female Young Adults: Healthcare Preferences, Priorities and Experiences

Introduction and HypothesisThere is a paucity of evidence on the healthcare preferences of active female young adults with urinary incontinence (UI). This research is aimed at examining the population’s healthcare preferences and priorities and their characteristics and experiences to improve access to and use of services.MethodsThis cross-sectional online survey study used a convenience community sample. Participants resided in Australia, were 18–30 years old, had self-reported engagement in physical activity of any frequency and self-reported urine leakage in the previous 4 weeks and met other eligibility criteria. Data were analysed using descriptive analyses.ResultsThirty-nine participants took part in the study. The majority engaged in recreational exercise (74.2%) and experienced UI of slight to moderate severity (82.9%). Participants preferred to access information and support anonymously online (71.4%) from general practitioners (58.8%), medical specialists (50.0%) or physiotherapists (44.1%). All participants wanted to be involved in the UI management decision-making process. Participants prioritised knowing information over cost (38.2%), changes to daily habits (35.3%) and potential risks or side effects (23.5%) when making decisions about management of UI.ConclusionThe results highlight the diversity among active female young adults with UI. They emphasise the need for shared decision making and highlight key information needs, providing the basis for the development of decision-making tools and protocols specific to this population. They demonstrate the need for anonymous online information and support, and draw attention to the presence of UI among young recreational exercisers, highlighting the importance of ensuring that information and support is available within this demographic.

Exploring the Link Between Sensory Processing and Psychopathology in a Community Sample of Young Adults: Bayesian Network Analyses

AbstractSensory processing is a fundamental aspect of human experience, and varies significantly between individuals, potentially affecting individual functioning, behaviour, and mental health. This study investigated the associations between sensory processing and psychopathology in a sample of the general population. Participants responded to a general psychiatric screening tool (DSM-5 Self-Rated Level 1 Cross-Cutting Symptom Measure-Adult) and to the Adolescent/Adult Sensory Profile (AASP) questionnaire. The sample comprised 1108 young adults (77.25% females, mean age 22.6). Data were analysed using item response theory and Bayesian network analyses, revealing specific associations between sensory profiles and psychopathological dimensions. Specifically, we detected associations between the low registration sensory profile and the dimensions of psychosis, substance use, and mania. Sensation seeking was associated with mania. Sensory sensitivity was related to depression and mania, while sensation avoiding was inversely correlated with mania. These findings suggest that reduced external sensory awareness may be linked to a predisposition to psychosis, while a multifaceted sensory processing pattern may indicate vulnerability to mood disorders. Assessing sensory processing could yield crucial insights into individual susceptibilities to mental disorders and help identify targeted preventive and therapeutic strategies

Atypical semantic cognition in schizotypal personality disorder and borderline personality disorder

ABSTRACT Increased schizotypal traits have previously been associated with atypical semantic cognition in community samples. However, no study has yet examined whether adults diagnosed with schizotypal personality disorder (SPD) display atypical semantic fluency and memory. We hypothesized that 24 adults diagnosed with SPD would name more idiosyncratic words on the semantic fluency task and show decreased semantic recall for animal and fruit category words compared with 29 participants with borderline personality disorder (BPD) and a community sample of 96 age-matched controls. We examined whether atypical semantic cognition was specifically associated with disorganized and eccentric speech and thinking, or more broadly with pathological personality traits and personality functioning. Our main hypothesis was confirmed, as the SPD participants named more idiosyncratic words and recalled fewer semantically related words compared with controls. Surprisingly, participants with BPD likewise named more atypical words compared with controls. More idiosyncratic semantic fluency was associated with more eccentric speech and thinking. Increased idiosyncratic semantic fluency and reduced semantic recall were both coupled to increased detachment and lowered personality functioning, while reduced semantic recall further was related to increased interpersonal problems. Our findings suggest that persons with SPD, and to a lesser degree BPD, show atypical semantic cognition, which is associated with eccentric speech and thinking, and more broadly with impaired personality function, social withdrawal, and emotional flatness. The idiosyncratic semantic cognition may worsen difficulties with social reciprocity seen in SPD and BPD.

The (Lack of) Progress in Accountancy Professionalisation: Insights from Non‐accountants in Portugal

Concerns about the success of professional accountancy in terms of its social dimension have been expressed in the literature. This study uses data from a questionnaire survey administered to a Portuguese community sample to provide insights for a better understanding of the social dimension of professional accountancy at the macro level. It examines how lay society in accounting posits accountants along the social judgement variables of status, competition, competence and warmth and tests these variables’ influence on accountants’ social image using structural equation modelling. The results indicate that status, competition, competence and warmth are all critical factors in constructing the social image of modern accountants. Accountants are perceived as modestly warm, highly competent and a cooperative lower middle‐class group. These findings confirm the profession's difficulties in enhancing accountants’ perceived social standing and reinforce the view of limited social mobility in the accountancy profession. The high level of competence identified suggests weak social power in the case of accountancy. Future research may investigate how soft skills and networking abilities in the perceived prototype of competence can promote the higher social standing of the accountancy group.

Resilient Stress Reactivity Profiles Predict Mental Health Gains from Online Contemplative Training: A Randomized Clinical Trial.

Low-dose app-based contemplative interventions for mental health are increasingly popular, but heterogeneity in intervention responses indicates that a personalized approach is needed. We examined whether different longitudinal resilience-vulnerability trajectories, derived over the course of the COVID-19 pandemic, predicted differences in diverse mental health outcomes after mindfulness and socio-emotional dyadic online interventions. The CovSocial project comprised a longitudinal assessment (phase 1) and an open-label efficacy trial (phase 2). A community sample of 253 participants received 12 min daily app-based socio-emotional dyadic or mindfulness-based interventions, with weekly online coaching for 10 weeks. Before and after the intervention, participants completed validated self-report questionnaires assessing mental health. Stress reactivity profiles were derived from seven repeated assessments during the COVID-19 pandemic (January 2020 to March/April 2021) and were categorized into resilient (more plasticity) or vulnerable (less plasticity) stress recovery profiles. After both interventions, only individuals with resilient stress reactivity profiles showed significant improvements in depression symptomatology, trait anxiety, emotion regulation, and stress recovery. Those with vulnerable profiles did not show significant improvements in any outcome. Limitations of this study include the relatively small sample size and potential biases associated with participant dropout. Brief app-based mental interventions may be more beneficial for those with greater levels of stress resiliency and plasticity in response to stressors. More vulnerable individuals might require more intense and personalized intervention formats.

Symptom Checklist-90-Revised: Factor structure and relevance as a measure for the Hierarchical Taxonomy of Psychopathology model

The Hierarchical Taxonomy of Psychopathology (HiTOP) is a recently proposed dimensional model of psychopathology that aims to provide a more comprehensive understanding of the organization of mental disorders. The Symptom Checklist-90-Revised (SCL-90-R) is a widely used self-report questionnaire that assesses nine broad dimensions of psychopathologies. The current study reexamined the optimum factor structure of the SCL-90-R (first aim), and its usefulness for the assessment of psychological dimensions from a HiTOP perspective (second aim). These were examined in a community sample of adolescents from Cyprus. A total of 839 adolescents (males = 352, females = 485; no response = 2) with ages ranging from 14 to 18 years [mean (SD) = 15.52 years (0.64 years)] completed the SCL-90-R and the Fünf-Faktoren-Fragebogen für Kinder (FFFK), a personality measure of the Five-Factor Model of personality. Relevant to the first aim, the findings showed the most support for an exploratory structural equal model, with the nine theorized SCL-90-R factors/dimensions. Relevant to the second aim, the SCL-90 dimensions of somatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, hostility, and phobic anxiety were associated with the five factors in the FFFK as theoretically predicated by the HiTOP model. The SCL-90-R dimensions for paranoid ideation and psychoticism did not. The findings indicated reasonable support for the theorized nine-factor SCL-90 model; and the use of the SCL-90-R dimension scales of somatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, hostility, and phobic anxiety for measuring the dimensions with similar names in the HiTOP model.

Fearlessness as an Underlying Mechanism Leading to Conduct Problems: Testing the INTERFEAR Model in a Community Sample in Spain.

Conduct problems (CP) in childhood and adolescence have a significant impact on the individual, family, and community. To improve treatment for CP, there is a need to improve the understanding of the developmental pathways leading to CP in boys and girls. Prior research has linked the child's fearlessness and callous-unemotional (CU) traits, as well as experiences of parental warmth and punitive parenting, to CP. However, few studies have tested the interplay of these factors in contributing to future CP development. The present study aimed to test the InterFear model, which suggests that fearlessness in early childhood leads to CP through an indirect pathway involving low positive parenting, high negative/punitive parenting, and callous-unemotional (CU) traits. The sample included 2467 Spanish children (48.1% girls; Mage = 4.25; SD = 0.91), followed up across a five-year period. Besides a direct association between fearlessness in early childhood and future CP, the results found an indirect pathway whereby fearlessness reduces positive parenting and increases punitive parenting, which contributes to the development of CU traits and sets the stage for CP in later childhood. The specific indirect effect from fearlessness to CP via CU traits accounted for most of the variance, suggesting the existence of a temperamental pathway independent of parental variables. Further, two additional indirect pathways, exclusive of fearlessness, were identified, which started with low parental warmth and positive parenting, leading to CP via CU traits. These findings support the InterFear model, demonstrating multiple pathways to CP with the involvement of fearlessness, parenting practices, and CU traits. This model might play a pivotal role in the development of targeted prevention and intervention strategies for CP.

Psychometric evaluation of the PCL-5: assessing validity, diagnostic utility, and bifactor structures

ABSTRACT Background: The changes DSM-5 brought to the diagnostic criteria for posttraumatic stress disorder (PTSD) resulted in revising the most widely used instrument in assessing PTSD, namely the Posttraumatic Checklist for DSM-5 (PCL-5). Objective: This study examined the psychometric properties of the Romanian version of the PCL-5, tested its diagnostic utility against the Structured Clinical Interview for DSM-5 (SCID-5), and investigated the latent structure of PTSD symptoms through correlated symptom models and bifactor modelling. Method: A total sample of 727 participants was used to test the psychometric properties and underlying structure of the PCL-5 and 101 individuals underwent clinical interviews using SCID-5. Receiver operating characteristic curve (ROC) analyses were performed to test the diagnostic utility of the PCL-5 and identify optimal cut-off scores based on Youden's J index. Confirmatory Factor Analyses (CFAs) and bifactor modelling were performed to investigate the latent structure of PTSD symptoms. Results: Estimates revealed that the PCL-5 is a valuable tool with acceptable diagnostic accuracy compared to SCID-5 diagnoses, indicating a cut-off score of >47. The CFAs provide empirical support for Anhedonia, Hybrid, and bifactor models. The findings are limited by using retrospective, self-report data and the high percentage of female participants. Conclusions: The PCL-5 is a psychometrically sound instrument that can be useful in making provisional diagnoses within community samples and improving trauma-informed practices.

Long-term effects of a preventive intervention on multiple components of adolescents' emotional insecurity.

A gap in research on family interventions is the understanding of long-term effects on hypothesized mechanisms of effect regarding children's processes of responding to family stressors. This study assessed the long-term effects of an intervention designed to improve interparental and family conflict resolution on adolescents' emotional insecurity about interparental conflict. Emotional insecurity about interparental conflict has long been linked with adolescents' risk for adjustment problems. These findings have motivated the development of several family-based preventive interventions, one of which is the focus of this study. A community sample of 225 adolescents and their parents participated in an RCT-based study of an intervention designed to reduce adolescent's emotional insecurity about interparental conflict. The intervention's effect on patterns of change in adolescents', mothers', and fathers' reports of the three components of adolescents' emotional insecurity (emotional reactivity, behavioral dysregulation, and cognitive representations) from posttest through the 3-year follow-up were examined using multilevel modeling. Results suggested that the intervention predicted immediate (pre to posttest) and long-term linear decreases in emotional reactivity, as well as long-term quadratic change in behavioral dysregulation. These findings support the beneficial effects of a brief intervention on multiple components of emotional security. The results also underscore the importance of considering the potential of long-term (including nonlinear) patterns of change that may occur as a function of family-based interventions, as well as that the impact of family-based interventions may vary as a function of reporter and component of emotional insecurity.

Neural and psychological correlates of post-traumatic stress symptoms in a community adult sample.

A multitude of factors are associated with the symptoms of post-traumatic stress disorder. However, establishing which predictors are most strongly associated with post-traumatic stress disorder symptoms is complicated because few studies are able to consider multiple factors simultaneously across the biopsychosocial domains that are implicated by existing theoretical models. Further, post-traumatic stress disorder is heterogeneous, and studies using case-control designs may obscure which factors relate uniquely to symptom dimensions. Here we used Bayesian variable selection to identify the most important predictors for overall post-traumatic stress disorder symptoms and individual symptom dimensions in a community sample of 569 adults (18 to 85yr of age). Candidate predictors were selected from previously established risk factors relevant for post-traumatic stress disorder and included psychological measures, behavioral measures, and resting state functional connectivity among brain regions. In a follow-up analysis, we compared results controlling for current depression symptoms in order to examine specificity. Poor sleep quality and dimensions of temperament and impulsivity were consistently associated with greater post-traumatic stress disorder symptom severity. In addition to self-report measures, brain functional connectivity among regions commonly ascribed to the default mode network, central executive network, and salience network explained the unique variability of post-traumatic stress disorder symptoms. This study demonstrates the unique contributions of psychological measures and neural substrates to post-traumatic stress disorder symptoms.

Early maladaptive schemas, distress tolerance and self-injury in Iranian adolescents: serial mediation model of transdiagnostic factors.

Non-suicidal self-injury (NSSI) is prevalent behaviour among adolescents. Although there are different etiological models of NSSI, there is a general lack of evidence-based, comprehensive and transdiagnostic models of NSSI in adolescents. The aim of this study was to investigate a model of transdiagnostic factors of NSSI in adolescents, testing a serial mediation model of the relationship between early maladaptive schemas (EMS), distress tolerance and NSSI through experiential avoidance and rumination. A community sample was identified of 1014 adolescents aged 13-17, of whom 425 had a history of NSSI. A serial mediation path analytic method was utilised to examine the relationships between NSSI and its associated functions as criterion variables, EMS and distress tolerance as predictors, experiential avoidance as the first mediator and rumination as the second mediator. The path analytic model fit indices were good (X2/d.f. = 2.25, goodness of fit index = 0.98, normed fit index = 0.97, comparative fit index = 0.98, root mean square error of approximation = 0.054, standardised root mean squared residual = 0.028). Rumination significantly mediated the relationship between schemas of 'vulnerability to harm', 'emotional deprivation', 'social isolation', 'insufficient self-control', and NSSI frequency and intrapersonal functions. In serial fashion, experiential avoidance mediated the role of rumination in the relationship between social isolation, and insufficient self-control and NSSI frequency and intrapersonal functions. All indirect effects were significant. Key indirect effects were found linking maladaptive schemas and distress tolerance to NSSI frequency, and NSSI intrapersonal functions via experiential avoidance and rumination. Thus, it is important to address these transdiagnostic factors with particular emphasis on the sequential mediating role of experiential avoidance and rumination in conceptualisation and therapeutic interventions for NSSI.

Greater Stress and Trauma Mediate Race-Related Differences in Epigenetic Age Between Black and White Young Adults in a Community Sample

Greater Stress and Trauma Mediate Race-Related Differences in Epigenetic Age Between Black and White Young Adults in a Community Sample

Experiences of Help-Seeking for Severe Mental Health Problems in Young Pakistani Women: A Preliminary Qualitative Study.

Almost three quarters of mental illnesses start by the age of 25, yet youth (18-25-year-olds) are often underrepresented in U.K. services. This is particularly true for those of ethnic minorities. In this study, we aimed to understand how young Pakistani women and their parents make decisions to seek help for severe mental health problems, and the barriers and facilitators to accessing professional help. Young Pakistani women with experience of severe mental health problems and their parents were recruited from a community sample. Semi-structured interviews were conducted with six young people and two parents. Data were analyzed using reflexive thematic analysis. Pakistani culture and its interplay with British culture strongly influenced the decisions and ability of young Pakistani women and their parents to help-seek, largely through the role of stigma. Low mental health literacy, stigma, and a lack of culturally informed services were identified as the most common barriers to accessing care. These barriers fed into the internalized stigma these young women experienced which, through fear of damaged reputation and personal prejudices, posed further barriers to seeking help. Participants highlighted recommendations for both individual-level (e.g., increased education and awareness) and service-level (e.g., greater choice over care) change to facilitate accessibility of professional help. Young Pakistani women face multiple culturally related challenges to accessing care for severe mental health problems at both the individual- and service-level. Novel suggestions to address these challenges, such as including youth peer support workers in services, may facilitate more inclusive and accessible services.

Predicting aggressive behaviors: Examining unique and interactive roles of PTSD and emotion dysregulation in a minority sample.

Aggression is a costly public health problem with severe and multi-faceted negative consequences and thus, identifying factors that contribute to aggression, particularly in understudied populations, is necessary to develop more effective interventions to reduce the public health cost of aggression. The goal this study was to test whether difficulties regulating emotions moderated the association between posttraumatic stress disorder (PTSD) symptoms and aggression in a community sample of predominantly Black females with high levels of trauma exposure. Furthermore, we explored unique relations between PTSD symptom clusters and distinct subscales of difficulties regulating emotions and aggression. The sample included 601 community participants recruited from an urban public hospital. Symptoms were assessed using self-report measures including the Difficulties in Emotion Regulation Scale (DERS) and Behavioral Questionnaire-Short. Regression analyses were conducted using PTSD symptoms and total DERS to test their interaction as predictors for aggression (using BQ-Short). We found that higher levels of PTSD arousal symptoms and difficulty controlling impulses when upset were positively related to aggression. We also conducted an exploratory analysis to examine the association between PTSD symptom clusters using the Alternative Symptom Clusters hybrid model. The results suggest that some PTSD symptoms (externalizing behavior) and some emotion dysregulation processes (difficulties controlling impulses when upset), relate to aggression in independent, rather than multiplicative ways. These results offer insights for new directions of research that focuses on the independent association between specific emotion dysregulation processes and PTSD symptoms on aggression.

Spanish Adaptation of the Mentalization Questionnaire (MZQ) in Community Adolescents and Adults.

Despite the role of mentalization in mental health outcomes and prevention, psychometrically-evaluated screening measures for mentalization remain sparse. One widely-used mentalization questionnaire is the Mentalization Questionnaire (MZQ; Hausberg et al., 2012), which we aimed to adapt and validate for use in Spanish. We adapted the MZQ to European Spanish and evaluated its psychometric properties in both adolescent (n = 389, ages 12-19, M = 14.5) and adult community samples (n = 382, M = 48). Confirmatory factor analysis resulted in a unidimensional structure including all items. This model had better goodness of fit than the original and other adaptations. Invariance analysis showed the same structure in adolescents compared by sex and age, and additionally in the adult versus adolescent samples. Evidence for convergent and discriminant validity was found. Internal consistency values in both adolescents and parents were fair and in the adolescent sample the MZQ scores remained moderately stable after re-test. The Spanish adaptation of the MZQ presents similar evidence of reliability and validity in the adolescent and adult samples. The results support this being a suitable version for evaluating mentalization in the general population.

Nanopore environmental DNA sequencing of catch water for estimating species composition in demersal bottom trawl fisheries

AbstractBycatch and discards, representing unwanted catches, undermine sustainable fisheries and hinder the conservation of vulnerable and endangered species. To effectively monitor bycatch and enhance the effectiveness of management measures while promoting sustainable fishing practices, reliable data is essential. Here, we explore the use of Nanopore metabarcoding to analyze the catch composition in demersal bottom fisheries. We collected eDNA samples directly from an onboard catch holding tank (catch water) for 10 fishing hauls from a fishing vessel operating in the Skagerrak (North‐East Atlantic). The approach involved sequencing a combination of long (~2 kb) and short (~170–313 bp) mitochondrial amplicons and was validated by analyzing a fishery‐related mock community sample and fishing haul replicates. Overall, the detection rate accuracy was 95% for landed species, and replicates obtained from the same fishing haul showed consistent results, validating the robustness of this approach. The detection rate accuracy for all caught species observed on board (including the non‐landed fraction) was 81%. Undetected species were always limited to species in low abundance, but may also be attributed to problems with identifying closely related species due to the impact of sequencing errors and limited diagnostic variation in the genetic regions used. In the future, such biases may be reduced by using additional markers to increase species discrimination power and applying newly available technological advantages in flow cell chemistry to improve sequencing accuracy. In conclusion, this study demonstrates the effectiveness of Nanopore eDNA sequencing of catch water for estimating species composition in demersal bottom trawl fisheries, including catches of non‐commercial and threatened and vulnerable species, without disrupting fishing activities. Incorporating eDNA analysis of catch water may therefore help facilitate effective monitoring, leading to better‐informed fisheries management, biodiversity conservation efforts, and the implementation of relevant legislation such as the EU landing obligation.

Influence of the hydrological regime of lake buyo on fish community of three floodplains in the Tai national park (southwestern Côte d’Ivoire)

Floodplains play an important role in the ecological functioning of the areas on which they depend. These plains are also of socio-economic interest to the local population, particularly in terms of fishing activities. The fish fauna of three Lake Buyo floodplains (Néma, Libériakôbro and Gah) was studied in relation to the lake's hydrological regime. The aim of this study was to evaluate the influence of the hydrological seasons of Lake Buyo on the structure of the fauna considered. Sampling of fish community was carried out monthly during an annual cycle using experimental fishing. The structure of the fish community was analyzed by determining taxonomic composition, taxon abundances (Ar) and the Shannon-Weaver diversity (H') and Pielou equitability (E) index. Temporal dynamics of the studied parameters were analyzed according to three hydrological seasons: flood season, high water season and recession season. Results showed that total specific richness of ichthyofauna of the studied plains was 38 species, and the richness observed at the different hydrological seasons varied significantly (p < 0.05). The Cyprinidae family was dominant in the abundances recorded at all seasons (48.34% ≤ Ar ≤ 85.5%). It should be noted that the studied ichthyofauna exhibited relatively low diversity and equitability with reference to diversity index (1.42 ≤ H' ≤ 1.46 and 0.28≤ E ≤ 0.29).