Since its inception in 2009, Argentina’s Universal Child Allowance (AUH) has become the country’s most comprehensive social protection policy for children, emphasising standardisation and objectivity. However, its implementation occurs in contexts of poverty and inequality, leading to uneven outcomes across communities. This study examines how street-level bureaucrats adapt large-scale policies like the AUH to local contexts marked by deep social disparities. Although the AUH is designed for standardized and automated implementation, frontline workers play a critical role in adjusting the policy to specific territorial needs. These bureaucrats employ informal strategies and policy improvisation to mitigate institutional weaknesses and address gaps in the AUH’s rigid framework. By analysing the interplay between the policy’s institutional design, frontline workers, and adaptations, this study sheds light on how street-level bureaucracies at multiple levels enable these workers to navigate local challenges and partially compensate for broader institutional fragility.

‘Tropicalization’, the phenomenon of species shifting their ranges, has become increasingly prevalent as a response to environmental modifications induced by global change. This study points to an accelerated tropicalization process of marine fish species in the Gulf of Cadiz, a bioinvasion hotspot adjacent to the Strait of Gibraltar. We report accelerated, unusual, and rare occurrences of 15 fish species expanding and potentially establishing their ranges in the Gulf of Cadiz, driven by ocean warming over the past decade. These new insights are the combined consequence of a range expansion of some species, likely facilitated by temperature increases, an intensification of maritime traffic (with a consequent rise in propagule pressure), and a possible increase in sampling efforts and citizen science.

Although fundamental advances in the life sciences raise the exciting possibility of novel translational therapies, optimal evidence-based usage of established treatments should be the bedrock of current clinical care. The authors argue that there are instances where well-established treatments are ‘underused’ in psychiatry; electroconvulsive therapy, clozapine and lithium are exemplars of this. This article explores possible reasons for, and strategies to address, this underuse.

Many marine invertebrates are intermediate hosts to parasites. As some of these parasites may influence host behaviour and act as cryptic agents involved in mass mortality, knowledge of their presence, dynamics, and life cycles is important. Our aim with the present study is to provide a survey of parasites in subtidal cockles in the Limfjorden (Denmark), to examine their influence on cockles, and to assess their possible role in the surfacing of cockles, as this phenomenon is considered a prelude to mortality. The trematode fauna of the studied subtidal population was poor in species, but about 19% of the examined cockles in late summer and autumn were infected by Monorchis parvus – a species not previously reported from cockles in Danish waters. Heavily infected cockles were filled with small, undulating, worm-like sporocysts, each filled with metacercariae. From August to November, the number of metacercariae in sporocysts increased, and at a certain point, the growing stock of sporocysts is supposed to reach a level where the cockle is unable to perform vital life functions. Our data show that infected individuals exhibit less annual shell growth than uninfected ones. There was no significant difference in the prevalence of M. parvus between unburied and buried cockles. Cockle-eating fish from the family Sparidae are known as final hosts to M. parvus, but these fish do not occur in Danish waters. Therefore, the record-high presence of M. parvus in cockles from the Limfjorden is surprising, and we consider alternative life cycle options for this trematode.

This paper compares concerted efforts to unify early instructional practice in the US in the early twentieth century and in the twenty-first century. The first effort began with the founding of the National Council for Primary Education in 1915; the second began in 2005 with calls for pre-K-3 alignment. Analysis of relevant sources indicates that today’s unifiers are attempting to achieve three of the same goals that their predecessors pursued in 1915: increased child activity, teacher autonomy, and use of early instructional practices up through grade 3. During the early twentieth century, kindergarten served as both the model for the upward extension of activity-based early instructional practice into the early primary grades and the locus of efforts to defend against the downward extension of skill-based elementary practice from the primary to the lower levels. During the second round of unification in the twenty-first century, however, preschool has become the model for extending and the locus of defending early instructional methodology.

The black walnut Juglans neotropica is a forest species characterized by being a monoecious and deciduous tree with a long life. This species has great ecological, environmental, and economic value, playing a fundamental role in the ecosystem. According to the IUCN, J. neotropica is threatened by anthropogenic activities that have drastically affected its distribution. In this study, the plastid intergenic spacer marker trnS-trnfM was amplified from 74 J. neotropica samples from eight locations in Amazonas region (Peru) to determine its haplotype network, genetic diversity, and genetic divergence. The results revealed that J. neotropica from Amazonas region showed i) a lineage composed of the eight populations embedded into the Rhysocaryon section; ii) three genetic groups within the haplotype network with the presence of an ancestral haplotype (H1) and possibly candidates for new taxa; iii) a high divergence between the populations of Molinopampa and Luya (1.62–2.64% of p-distance); iv) populations with high genetic diversity indices (Levanto = 0.32, Molinopampa = 0.41) with constant threats from anthropogenic activities; and v) high genetic structuring within populations (Fst = 0.04). Overall, these results collectively support a scenario of high variability with limited interpopulation genetic exchange. Our findings provide previously unavailable insights into the vulnerability of the black walnut J. neotropica by (i) quantifying the genetic consequences of human-induced habitat fragmentation and (ii) establishing baseline diversity metrics for future monitoring. These results directly inform in situ conservation priorities by identifying populations harbouring unique alleles that warrant immediate protection. Finally, further research should include nuclear markers (e.g., microsatellites or RAD-seq) to support our findings.

Previous typification acts are reviewed herein, in light of the International Code of Zoological Nomenclature, to correct improper procedures while raising new type specimens for Theriosynoecum silvai, Darwinula martinsi and Cypridea araripensis, after loss of the original ones.

This article introduces a dome-type soft tactile sensor that can autonomously adjust its stiffness to evaluate surface contact characteristics, including the elastic modulus, contact force, and the presence of abnormal hardness within soft materials, using a strain gauge as a single sensing element. The strain sensor element is placed at the tip of the dome to measure the deformations during contact that reflect the properties of the contacted object. Using machine learning techniques, the sensor system can accurately predict these characteristics in various materials with an error rate of less than approximately 8%. A hybrid approach that combines experimental and simulation data enables the sensor to be trained effectively, generating sufficient data for accurate predictions without extensive experiments. The high accuracy results of the machine learning models demonstrate that the sensor system can precisely calculate the elastic modulus and depth of the defect. The adaptability and precision of the proposed sensor make it ideal for applications in medical diagnostics and other fields requiring careful interaction with soft materials. Furthermore, its innovative approach can be referenced for exploiting the properties of soft materials to achieve task-specific morphology without redesigning soft sensors or soft robots.

Ficopomatus uschakovi has been reported in Galveston Bay (GB), Texas, USA, in taxonomic lists and studies of biofouling communities since 2017; however, after 2 years (from 2022 to 2024) of no observations of this species in the system, we report the first seasonal outbreak after the landfall of Hurricane Beryl in the summer of 2024, followed by 2 weeks of heavy rain, decreasing the salinity at the collection site. In this study, we provide the first genetic characterization of the specimens of F. cf. uschakovi from GB using mitochondrial cytochrome oxidase b DNA sequence data. Results demonstrated that specimens of F. cf. uschakovi in GB belong to the same genetic species as reported on both of coasts of Mexico, the Gulf coast of Florida, and Thailand. The presence of shared haplotypes suggests possible initial introduction from Asia and subsequent expansion of F. cf. uschakovi populations. The comparison of the morphological characters with reports from nearby localities showed a variation in the number of rows and spines on the operculum and in the tube colouration. This study highlights the importance of morphological and genetic analysis for reliable identification of invasive species, the need for wide geographical sampling, as well as examinations of the ecological drivers of F. cf. uschakovi outbreaks.

Avocado is a delicious fruit crop having great economic importance. Understanding the extent of variability present in the existing germplasm is important to identify genotypes with specific traits and their utilization in crop improvement. The information on genetic variability with respect to morphological and biochemical traits in Indian avocados is limited and as it has hindered genetic improvement of the crop. In the current study, 83 avocado accessions from different regions of India were assessed for important 17 morphological and 8 biochemical traits. The results showed the existence of wide variability for traits such as fruit weight (75.88–934.12 g), pulp weight (48.08–736.19 g), seed weight (6.37–32.62 g), FRAP activity (27.65–119.81 mg AEAC/100 g), total carotenoids (0.96–7.17 mg/100 g), oil content (4.91–25.49%) and crude fibre (6.85–20.75%) in the studied accessions. The first three components of principal component analysis explained 54.79 per cent of total variance. Traits such as fruit weight, pulp weight, seed weight, moisture and oil content contributed more significantly towards total variance compared to other traits. The dendrogram constructed based on Euclidean distance wards minimum variance method divided 83 accessions into two major groups and nine sub clusters suggesting wide variability in the accessions with respect to studied traits. In this study, superior accessions for important traits such as fruit size (PA-102, PA-012), high pulp recovery (PA-036, PA-082,), thick peel (PA-084, PA-043, PA-011, PA-008), high carotenoids (PA-026, PA-096) and high oil content (PA-044, PA-043, PA-046, PA-045) were identified which have potential utility in further crop improvement programmes.