Peripartum Depressive Symptoms in Fathers during the COVID-19 Pandemic.

Background: This research investigates peripartum depression in fathers during COVID-19, focusing on how pandemic-related distress is associated with paternal depressive symptoms and the quality of father-child feeding interactions. The primary objective was to understand if the pandemic has influenced depressive symptoms in new fathers and how these symptoms impact their interactions with their children, especially during feeding. Methods: Utilizing a cross-sectional design, the research employs online surveys and remote observation to gather data from 243 Italian fathers. The analysis involves established psychometric tools like the Symptoms Check-List/90R and the Peritraumatic Distress Index to assess the severity of depressive symptoms and their correlation with father-child interaction exchanges, observed through the SVIA. Results: The fathers' peritraumatic distress due to COVID-19 was significantly and positively associated with the level of their depressive symptoms and negatively correlated with the quality of their feeding interactions with their children. Moreover, elevated levels of peritraumatic stress were notably predictive of higher instances of depressive symptoms in the fathers. Further, higher levels of stress associated with COVID-19 were predictive of a poorer quality of father-child interactions. Conclusions: This research highlights the need for inclusive perinatal support programs, offering foundational insights into paternal mental health during pandemics.

Screening competition and cross-feeding interactions during utilization of human milk oligosaccharides by gut microbes.

Background: The infant gut microbiome is a complex community that influences short- and long-term health. Its assembly and composition are governed by variables such as the feeding type. Breast milk provides infants an important supply of human milk oligosaccharides (HMO), a broad family of carbohydrates comprising neutral, fucosylated, and sialylated molecules. There is a positive association between HMOs and the overrepresentation of Bifidobacterium species in the infant gut, which is sustained by multiple molecular determinants present in the genomes of these species. Infant-gut-associated Bifidobacterium species usually share a similar niche and display similar HMO inclinations, suggesting they compete for these resources. There is also strong evidence of cross-feeding interactions between HMO-derived molecules and bifidobacteria. Methods: In this study, we screened for unidirectional and bidirectional interactions between Bifidobacterium and other species using individual HMO. Bifidobacterium bifidum and Bacteroides thetaiotaomicron increased the growth of several other species when their supernatants were used, probably mediated by the partial degradation of HMO. In contrast, Bifidobacterium longum subsp. infantis. supernatants did not exhibit positive growth. Results: Bifidobacterium species compete for lacto-N-tetraose, which is associated with reduced bidirectional growth. The outcome of these interactions was HMO-dependent, in which the two species could compete for one substrate but cross-feed on another. 2'-fucosyllactose and lacto-N-neotetraose are associated with several positive interactions that generally originate from the partial degradation of these HMOs. Conclusion: This study presents evidence for complex interactions during HMO utilization, which can be cooperative or competitive, depending on the nature of the HMO. This information could be useful for understanding how breast milk supports the growth of some Bifidobacterium species, shaping the ecology of this important microbial community.

Do human-wildlife interactions predict offspring hiding strategies in peri-urban fallow deer?

Human activities can induce significant behavioural changes in wildlife. Often explored through extractive interactions (e.g. hunting) that can favour certain behavioural traits, the implications of non-extractive ones, such as wildlife feeding, remain understudied. Research shows that people tend to favour bolder individuals within populations despite their dynamics and consequences being unclear. Using fallow deer in a peri-urban environment, we studied whether mothers that show reduced fear of humans and consistently approach them for food adopt weaker anti-predator strategies by selecting less concealed fawning bedsites closer to human hotspots. This would provide the advantage of additional feeding opportunities in comparison with shyer mothers while keeping their fawns close. Our dataset encompassed 281 capture events of 172 fawns from 110 mothers across 4 years. Surprisingly, mothers that regularly accepted food from humans selected more concealed bedsites farther from human hotspots, giving their offspring better protection while also benefitting from additional food during lactation. Our results show behavioural adaptations by a subset of females and, for the first time, link the tendency to approach humans and strategies to protect offspring. Given previous findings that these begging females also deliver heavier fawns at birth, our research further investigates human-wildlife feeding interactions and their behavioural implications.

The Quality of Mother-Child Feeding Interactions Predicts Psychopathological Symptoms in Offspring and Mothers Seven Years Later: A Longitudinal Study on the General Population.

The increased risk of internalizing and externalizing symptoms in children has been observed in the presence of maternal psychopathology. This study aimed to investigate a potential pathway involving the quality of early interactions between mothers and their children. A sample of 150 mother-child dyads underwent assessment when the children were 3 years old and around the age of 10. Video recordings of feeding exchanges between mothers and children were analyzed to evaluate the quality of mother-child interactions. Maternal psychopathology and child internalizing and externalizing symptoms were measured through self-report and report-form measures completed by mothers. The quality of mother-child feeding interactions at three years of age significantly differentiated (p < 0.001), eight years later, between mothers at high and low psychopathological risk and between children exhibiting clinical and subclinical internalizing symptoms. Clinically relevant child symptoms were notably more prevalent when the mother-child interaction quality at three years of age was maladaptive, particularly in the context of concurrent high maternal psychopathological risk. The study findings underscore the importance of focusing on the early quality of mother-child feeding interactions to identify potential situations of maternal and child clinical risk for the development of psychopathological symptoms and to guide preemptive measures and policies.

Breastfeeding Apps: A Descriptive Report.

BACKGROUND: Women are increasingly using breastfeeding apps to facilitate and organize breastfeeding; however, no study has so far focused on maternal psychopathological risk and on the quality of dyadic exchanges in this field. AIM AND METHODS: This preliminary, descriptive study aimed at evaluating levels of psychopathological symptoms (through the SCL-90/R) and for the quality of the interactions they have with their children during feeding (through the SVIA) in mothers who use breastfeeding apps with different grades of engagement. RESULTS: Data analyses showed that mothers with a mild use of the apps present a higher quality of dyadic interactions during feeding and lower psychopathological risk. CONCLUSIONS: The cross-sectional and descriptive nature of this study does not allow any causal conclusions. However, results suggest that the higher the engagement and use of breastfeeding apps, the lower the quality of feeding interactions and the higher the maternal psychopathological risk.

Toward a Global Model of Methylmercury Biomagnification in Marine Food Webs: Trophic Dynamics and Implications for Human Exposure.

Marine fish is an excellent source of nutrition but also contributes the most to human exposure to methylmercury (MMHg), a neurotoxicant that poses significant risks to human health on a global scale and is regulated by the Minamata Convention. To better predict human exposure to MMHg, it is important to understand the trophic transfer of MMHg in the global marine food webs, which remains largely unknown, especially in the upper trophic level (TL) biota that is more directly relevant to human exposure. In this study, we couple a fish ecological model and an ocean methylmercury model to explore the influencing factors and mechanisms of MMHg transfer in marine fish food webs. Our results show that available MMHg in the zooplankton strongly determines the MMHg in fish. Medium-sized fish are critical intermediaries that transfer more than 70% of the MMHg circulating in food webs. Grazing is the main factor to control MMHg concentrations in different size categories of fish. Feeding interactions affected by ecosystem structures determine the degree of MMHg biomagnification. We estimate a total of 6.1 metric tons of MMHg potentially digested by the global population per year through marine fish consumption. The model provides a useful tool to quantify human exposure to MMHg through marine fish consumption and thus fills a critical gap in the effectiveness evaluation of the convention.

Does artificial feeding impact neonate growth rates in a large free-ranging mammal?

Variation and disparity in resource access between individuals in an animal population within human-dominated landscapes require attention as artificial selection processes may be at work. Independent, recreational human-wildlife feeding interactions constitute an increasingly prevalent, yet understudied, food resource for birds and mammals living in our cities. However, only a limited number of risk-taking individuals may access it. Using urban fallow deer as our model species, we hypothesized that if these interactions result in positive effects for the engaging individual, e.g. increased milk quality and yield, then this would result in the increased growth rates of their offspring. Alternatively, if these individuals were prioritizing investing time in engagement with humans, resulting in decreased maternal care, then this would result in slower growth rates in their offspring. We found that the offspring of those females that regularly interacted with humans displayed significantly faster growth rates than their risk-adverse counterparts. This advantage for fearless mothers in terms of boosted neonatal growth rates could be mirrored in birds accessing garden feeders, seagulls or pigeons utilizing urban resources, or seals approaching city harbours. Here, we add a new piece to the complex puzzle of how humans are impacting wildlife living within human-dominated landscapes.

Parental Pre and Postnatal Depression: The Longitudinal Associations with Child Negative Affectivity and Dysfunctional Mother-Child Feeding Interactions.

BACKGROUND: Many studies have shown the influence of maternal perinatal depression on a child's emotional and behavioral regulation ability; yet there is scarce research on the impact of the father's perinatal depression on the caregiver-infant relationship and the child's development. METHODS: Through a longitudinal study, we investigated maternal and paternal depression and its association with infants' emotionality and mother-infant feeding interactions The sample was constituted of 136 first-time parents (68 couples, and their full-term babies at 3 and 6 months old). At T1 (28th week of pregnancy), T2 (three months old), and T3 (at six months age) parents responded to the Edinburgh Postpartum Depression Scale. At Times 2 and 3, mothers and fathers completed the Infant Behavior Questionnaire, and recorded mother-infant interactions were coded by means of the Feeding Scale. RESULTS: Statistical analyses indicated stability of maternal and paternal depression over time. Correlations emerged between mother's higher depression scores, negative affective state during interactions at three months age, infant food refusal and mother-infant interactional conflict at six months age. Paternal higher depressive scores were associated with the mother-child interactional conflict. To finish, higher parental depression scores were related with infant negative emotionality. CONCLUSION: The current study confirms the relevance of embracing a cumulative risk model to support the child's development with early caregiver-child interventions.

Impact of Maternal-Newborn Separation in Italian Women with Suspected COVID-19 Infection on Psychopathological Symptoms and Quality of Interactions during Breastfeeding.

INTRODUCTION: Before the COVID-19 pandemic, proximity between mothers and their newborn infants was at the core of sanitary guidelines. With the aim of stopping the virus transmission from mothers to infants and possible physical dangers due to the infection, some hospitals discouraged or even prohibited skin-to-skin contact and breastfeeding. METHOD: This study recruited 180 dyads in private and public hospitals in Italy with the aim of verifying whether mother-infant separation after delivery is associated with higher maternal psychopathological distress (assessed through the SCL-90-R) and poorer quality of dyadic interactions during breastfeeding (evaluated through the SVIA). RESULTS: Our results showed that mothers separated from their infants displayed more anxiety, depression, and obsessive-compulsive symptoms and a lower quality of feeding interactions on all the subscales of the SVIA (mother's affective state; interactive conflict; food refusal behavior; dyad's affective state). CONCLUSION: In light of these results, our study suggests that separating mothers from their newborns is associated with increased psychopathological symptoms in mothers and poorer feeding interactions. These issues have been posited as key predictors of maladaptive outcomes in infants' later lives; therefore, health services must fully consider the short- and long-term consequences of separating mothers and infants in their policies in the event of future pandemics.

Human Gut Faecalibacterium prausnitzii Deploys a Highly Efficient Conserved System To Cross-Feed on ß-Mannan-Derived Oligosaccharides.

ß-Mannans are hemicelluloses that are abundant in modern diets as components in seed endosperms and common additives in processed food. Currently, the collective understanding of ß-mannan saccharification in the human colon is limited to a few keystone species, which presumably liberate low-molecular-weight mannooligosaccharide fragments that become directly available to the surrounding microbial community. Here, we show that a dominant butyrate producer in the human gut, Faecalibacterium prausnitzii, is able to acquire and degrade various ß-mannooligosaccharides (ß-MOS), which are derived by the primary mannanolytic activity of neighboring gut microbiota. Detailed biochemical analyses of selected protein components from their two ß-MOS utilization loci (F. prausnitzii ß-MOS utilization loci [FpMULs]) supported a concerted model whereby the imported ß-MOS are stepwise disassembled intracellularly by highly adapted enzymes. Coculturing experiments of F. prausnitzii with the primary degraders Bacteroides ovatus and Roseburia intestinalis on polymeric ß-mannan resulted in syntrophic growth, thus confirming the high efficiency of the FpMULs' uptake system. Genomic comparison with human F. prausnitzii strains and analyses of 2,441 public human metagenomes revealed that FpMULs are highly conserved and distributed worldwide. Together, our results provide a significant advance in the knowledge of ß-mannan metabolism and the degree to which its degradation is mediated by cross-feeding interactions between prominent beneficial microbes in the human gut. IMPORTANCE Commensal butyrate-producing bacteria belonging to the Firmicutes phylum are abundant in the human gut and are crucial for maintaining health. Currently, insight is lacking into how they target otherwise indigestible dietary fibers and into the trophic interactions they establish with other glycan degraders in the competitive gut environment. By combining cultivation, genomic, and detailed biochemical analyses, this work reveals the mechanism enabling F. prausnitzii, as a model Ruminococcaceae within Firmicutes, to cross-feed and access ß-mannan-derived oligosaccharides released in the gut ecosystem by the action of primary degraders. A comprehensive survey of human gut metagenomes shows that FpMULs are ubiquitous in human populations globally, highlighting the importance of microbial metabolism of ß-mannans/ß-MOS as a common dietary component. Our findings provide a mechanistic understanding of the ß-MOS utilization capability by F. prausnitzii that may be exploited to select dietary formulations specifically boosting this beneficial symbiont, and thus butyrate production, in the gut.

Mother-child interactions during feeding: A study on maternal sensitivity in dyads with underweight and normal weight toddlers.

During the second year of life, mother's sensitivity in encouraging child autonomy supports children's emotional-affective individuation. In the feeding context, there is a clear transition from dependence on the mother to an emerging autonomy. Several studies have found an association between children's poor growth which is not related to organic pathologies, and maladaptive mother-child interactions that are characterized by poor maternal sensitivity. Despite this evidence, no studies have investigated maternal sensitivity to specific child's cues, such as demands for autonomy, during feeding interactions between mothers and their underweight children. This study aimed to assess how mothers' psychopathological risk and toddler's dysregulation profile are associated with mother-toddler interactional quality during feeding, with particular attention to mothers' sensitivity to child's specific cues (e.g. need of autonomy, requests for cooperation, request to stop the interaction, etc.). One hundred fifty mother-toddler dyads (N = 73 with underweight children and N = 77 with normal weight children) with children aged between 18 and 30 months, were recruited. Mother-toddlers feeding interactions were assessed through specific rating scales applied to the video-recorded interactions and mothers filled out questionnaires on children's emotional-behavioral functioning and their own psychopathological risk. Results showed a significant association between the quality of mother-toddler feeding interaction and children's weight. Underweight children showed less demand for autonomy and request for cooperation than normal weight children. Moreover, mothers of underweight children were less sensitive to toddler's cues of wanting to stop the interaction and demands for autonomy compared to mothers of normal weight children. Lower facilitations were associated with toddler's more dysregulated profile and with mother's higher psychopathological risk, and high toddler's dysregulation profile was associated with lower maternal sensitivity to child's cues of wanting to interrupt interactions and with worse mother's mood. Assessing maternal sensitivity in relation to toddler's specific cues might be particularly relevant in the feeding context. It might help to detect some dysfunctional interactive patterns and allow the implementation of prevention and treatment programs.

Constraints and variation in food web link-species space.

Predicting food web structure in future climates is a pressing goal of ecology. These predictions may be impossible without a solid understanding of the factors that structure current food webs. The most fundamental aspect of food web structure-the relationship between the number of links and species-is still poorly understood. Some species interactions may be physically or physiologically 'forbidden'-like consumption by non-consumer species-with possible consequences for food web structure. We show that accounting for these 'forbidden interactions' constrains the feasible link-species space, in tight agreement with empirical data. Rather than following one particular scaling relationship, food webs are distributed throughout this space according to shared biotic and abiotic features. Our study provides new insights into the long-standing question of which factors determine this fundamental aspect of food web structure.

Enhancing Microbial Pollutant Degradation by Integrating Eco-Evolutionary Principles with Environmental Biotechnology.

Environmental accumulation of anthropogenic pollutants is a pressing global issue. The biodegradation of these pollutants by microbes is an emerging field but is hampered by inefficient degradation rates and a limited knowledge of potential enzymes and pathways. Here, we advocate the view that significant progress can be achieved by harnessing artificial community selection for a desired biological process, an approach that makes use of eco-evolutionary principles. The selected communities can either be directly used in bioremediation applications or further be analyzed and modified, for instance through a combination of systems biology, synthetic biology, and genetic engineering. This knowledge can then inform machine learning and enhance the discovery of novel biodegradation pathways.

Emotional-Behavioral Regulation, Temperament and Parent-Child Interactions Are Associated with Dopamine Transporter Allelic Polymorphism in Early Childhood: A Pilot Study.

International research has highlighted the role played by individual genetic polymorphism, children's emotional-behavioral functioning, and quality of parent-child feeding interaction in shaping children's development. Few studies have focused on the dopamine transporter (DAT1) gene in these processes. In a community sample of 81 families with young children aged between 19 and 28 months (37 males and 44 females), this pilot study aimed to explore possible relationships between children's DAT1 genotype (9/x: 9/9, 9/19 contrasted to 10/10), their own psychological profiles, parental psychopathological risk, and the quality of mother-child and father-child feeding interactions. Children's DAT1 genotype was assessed collecting DNA through buccal; children's temperament and emotional-behavioral regulation, and parental psychopathological risk were assessed, respectively, through report-form and self-report instruments; then, dyadic exchanges were videotaped during a mealtime, and coded based on the Scala di Valutazione dell'Interazione Alimentare (SVIA). Results showed significant differences in the variables under study based on children's DAT1 genotype, with a higher risk associated with the 10/10. Our findings have provided preliminary new evidence on the relationship between a different child's polymorphisms, their own emotional-behavioral functioning, and the quality of the family environment, with important implications for the planning of more targeted prevention programs.

Sharing for science: high-resolution trophic interactions revealed rapidly by social media.

Discrete, ephemeral natural phenomena with low spatial or temporal predictability are incredibly challenging to study systematically. In ecology, species interactions, which constitute the functional backbone of ecological communities, can be notoriously difficult to characterise especially when taxa are inconspicuous and the interactions of interest (e.g., trophic events) occur infrequently, rapidly, or variably in space and time. Overcoming such issues has historically required significant time and resource investment to collect sufficient data, precluding the answering of many ecological and evolutionary questions. Here, we show the utility of social media for rapidly collecting observations of ephemeral ecological phenomena with low spatial and temporal predictability by using a Facebook group dedicated to collecting predation events involving reptiles and amphibians in sub-Saharan Africa. We collected over 1900 independent feeding observations using Facebook from 2015 to 2019 involving 83 families of predators and 129 families of prey. Feeding events by snakes were particularly well-represented with close to 1,100 feeding observations recorded. Relative to an extensive literature review spanning 226 sources and 138 years, we found that social media has provided snake dietary records faster than ever before in history with prey being identified to a finer taxonomic resolution and showing only modest concordance with the literature due to the number of novel interactions that were detected. Finally, we demonstrate that social media can outperform other citizen science image-based approaches (iNaturalist and Google Images) highlighting the versatility of social media and its ability to function as a citizen science platform.

Novel feeding interactions amplify the impact of species redistribution on an Arctic food web.

Species are redistributing globally in response to climate warming, impacting ecosystem functions and services. In the Barents Sea, poleward expansion of boreal species and a decreased abundance of Arctic species are causing a rapid borealization of the Arctic communities. This borealization might have profound consequences on the Arctic food web by creating novel feeding interactions between previously non co-occurring species. An early identification of new feeding links is crucial to predict their ecological impact. However, detection by traditional approaches, including stomach content and isotope analyses, although fundamental, cannot cope with the speed of change observed in the region, nor with the urgency of understanding the consequences of species redistribution for the marine ecosystem. In this study, we used an extensive food web (metaweb) with nearly 2,500 documented feeding links between 239 taxa coupled with a trait data set to predict novel feeding interactions and to quantify their potential impact on Arctic food web structure. We found that feeding interactions are largely determined by the body size of interacting species, although species foraging habitat and metabolic type are also important predictors. Further, we found that all boreal species will have at least one potential resource in the Arctic region should they redistribute therein. During 2014-2017, 11 boreal species were observed in the Arctic region of the Barents Sea. These incoming species, which are all generalists, change the structural properties of the Arctic food web by increasing connectance and decreasing modularity. In addition, these boreal species are predicted to initiate novel feeding interactions with the Arctic residents, which might amplify their impact on Arctic food web structure affecting ecosystem functioning and vulnerability. Under the ongoing species redistribution caused by environmental change, we propose merging a trait-based approach with ecological network analysis to efficiently predict the impacts of range-shifting species on food webs.

Emotional-Behavioral Functioning, Maternal Psychopathologic Risk and Quality of Mother-Child Feeding Interactions in Children with Avoidant/Restrictive Food Intake Disorder.

The literature on food intake disorder (ARFID) in early childhood has evidenced psychopathologic difficulties in both children and their mothers and a poor quality of feeding interactions. Only a few studies have focused on three different ARFID subtypes: irritable/impulsive (I/I), sensory food aversions (SFA) and post traumatic feeding disorder (PTFD). The aim of this study was to explore possible differences between the three groups in children's emotional-behavioral functioning, maternal psychopathologic risk and the quality of mother-child feeding interactions, comparing these clinical groups with a control group. The sample consisted of 100 child-mother dyads, of which 23 children with I/I, 25 children with SFA, 27 children with PTFD and 27 children with no diagnosis. The mothers primarily filled out questionnaires assessing their psychopathologic symptoms and children's emotional-behavioral functioning. Then, all dyads were videotaped during a main meal. Results revealed significant differences between the study groups in relation to children's emotional-adaptive functioning, mothers' psychological profile and mother-child interactions during feeding. These findings are relevant for the development of target intervention programs to treat specific ARFID disorders.

Early mother-child dyadic pathways to childhood obesity risk: A conceptual model.

Understanding the emotional quality of the mother-child dyadic relationship and parent-child feeding interactions may further clarify early developmental pathways to eating behaviours and obesity risk. The quality of parent-child relationships fosters all aspects of child development but has not yet been extensively examined in relation to childhood weight gain. The aim of this paper is to propose a conceptual model, which outlines early mother-child dyadic pathways linking parent-child feeding interactions to child body mass index, where parent-child relationships have a central role. It maps out individual and dyadic mother-child factors (i.e., attachment, child temperament and maternal mental health) that influence the nature and quality of parent-child feeding interactions from infancy to toddlerhood. Our model bridges the gap between research fields by bringing together key maternal and child factors implicated in child development. Understanding early parent-child feeding interactional patterns and their influence on child self-regulation and eating behaviours may be relevant to multidisciplinary approaches toward preventing childhood obesity. High quality quantitative and observational data capturing meaningful parent, child and dyadic level interactions around food contexts, attachment security, maternal mental health, child temperament and self-regulation will help to inform new, aetiologically important, targets for preventative intervention.

Influence of maternal reflective functioning on mothers' and children's weight: A follow-up study.

Based on cross-sectional research linking poor reflective functionining (RF) to eating disorders, the current follow-up study tested whether maternal RF would explain the variance of mothers' and children's weight beyond the effects of maternal emotional dysregulation. During pregnancy (Time 1 [T1]), 51 women were administered the Difficulties in Emotion Regulation Scale (DERS) and interviewed using the Adult Attachment Interview (AAI). Seven months after delivery (Time 2 [T2]), mother-baby dyads who remained in the study (n = 44) were videotaped (Feeding Scale) during their feeding interaction. Last (Time 3 [T3]), the weight of the 34 children who were still in the study was collected at 3 years of age. Maternal AAI-RF at T1 did not correlate with the DERS at T1 nor with the quality of the feeding interacions at T2. However, it correlated, significantly, with maternal body mass index (BMI) at T1, r = -.298, P = .034, and marginally significantly with baby's BMI at T3, r = -.296, P = .089. Moreover, multiple regression models showed a trend indicating that maternal AAI-RF might explain the variance of mothers' and children's weight beyond the effects of maternal emotional dysregulation. These findings suggest that working on maternal mentalization might contribute to helping prevent childhood obesity from pregnancy.

Objetivo: con base en la investigación de naturaleza transversal que conecta el pobre funcionamiento con reflexión (RF) con los trastornos de alimentación, el presente estudio de seguimiento examinó si el RF materno podría explicar la variación del peso de las madres y de los niños más allá de los efectos de la desregulación emocional materna. Método: durante el embarazo (T1), a 51 mujeres se les administró la Escala de Regulación de las Dificultades en la Emoción (DERS) y se les entrevistó usando la Entrevista de la Afectividad Adulta (AAI). Siete meses después del parto (T2), las díadas mamá-bebé que permanecían en el estudio (n = 44) fueron grabadas en video (Escala de Alimentación) durante su interacción de alimentación. Por último (T3), se determinó el peso de los 34 niños que aún estaban en el estudio a los tres años de edad. Resultados: la información materna de AAI-RF al T1 no se correlacionó con DERS al T1, ni tampoco con la calidad de las interacciones de alimentación al T2. Sin embargo, sí se correlacionó, significativamente, con BMI materno al T1 (r = −.298, p = .034), y marginalmente significativo, con el BMI del bebé al T3 (r = −.296, p = .089). Es más, los modelos de regresión múltiple mostraron una tendencia indicando que la AAI-RF materna pudiera explicar la variación del peso de las madres y de los niños más allá de los efectos de la desregulación emocional materna. Conclusiones: estos resultados sugieren que trabajar en la mentalización materna pudiera contribuir a ayudar a prevenir la obesidad en la niñez desde el embarazo.

Objectif: Se basant sur des recherches transversales liant un faible fonctionnement de réflexion (RF) aux troubles du comportement alimentaire, cette étude de suivi a testé si le RF maternel pouvait ou non expliquer la variance des poids des mères et des enfants au-delà des effets de la dysrégulation émotionnelle maternelle. Méthode: Durant la grossesse (T1), 51 femmes ont reçu l'Echelle de Difficultés de Régulation de l'Emotion (en anglais Difficulties in Emotion Regulation Scale, soit la DERS) et ont passé un entretien utilisant l'Entretien d'Attachement Adulte (Adult Attachment Interview, AAI). Sept mois après l'accouchement (T2), les dyades mère-bébé encore dans l'étude (n = 44) ont été filmées (Echelle d'Alimentation) durant leur interaction alimentaires. Enfin (T3), le poids des 34 enfants étant encore dans l'étude a été pris à l'âge de trois ans. Résultats: Le RF-AAI maternel au T1 n'était pas en corrélation avec la DERS au T1, ni avec la qualité des interactions alimentaires au T2. Cependant, il était corrélé, et de manière importante, avec l'IMC maternel au T1 (r = −,298, p = ,034), et de manière marginalement importante, avec l'IMC du bébé au T3 (r = −,296, p = ,089). De plus plusieurs modèles de régression ont montré une tendance indiquant le le RF-AAI maternel pourrait expliquer la variance des poids des mères et des enfants au delà des effets de la dysrégulation émotionnelle maternelle. Conclusions: Ces résultats suggèrent que le fait de travailler sur la mentalisation maternelle peut contribuer à aider à prévenir l'obésité de l'enfance dès la grossesse.

Species' ecological functionality alters the outcome of fish stocking success predicted by a food-web model.

Fish stocking is used worldwide in conservation and management, but its effects on food-web dynamics and ecosystem stability are poorly known. To better understand these effects and predict the outcomes of stocking, we used an empirically validated network model of a well-studied lake ecosystem. We simulate two stocking scenarios with two native fish species valuable for fishing. In the first scenario, we stock planktivorous fish (whitefish) larvae in the ecosystem. This leads to a 1% increase in adult whitefish biomasses and decreases the biomasses of the top predator (perch). In the second scenario, we also stock perch larvae in the ecosystem. This decreases the planktivorous whitefish and the oldest top predator age class biomasses, and destabilizes the ecosystem. Our results demonstrate that the effects of stocking depend on the species' position in the food web and thus cannot be assessed without considering interacting species. We further show that stocking can lead to undesired outcomes from both management and conservation perspectives. The gains of stocking can remain minor and have adverse effects on the entire ecosystem.