Fruit Resources Research Articles

Nanosatellite-class dynamic attitude simulator for hands-on aerospace control education

Abstract Due to their low size, mass, development cost and time, nanosatellites have become an increasingly popular tool at universities for providing students with hands-on experience in aerospace education. Among spacecraft subsystems, the attitude determination and control one surely represents a fruitful resource for practicing aerospace control applications. To enable on-ground verification of spacecraft attitude control hardware and software, however, the biggest challenge to overcome is that of providing a representative testing environment. Towards this end, at the µ3S laboratory at the University of Bologna a dynamic hardware in the loop facility has been developed, which allows for testing attitude control subsystems of nanosatellites in the range of 1U to 3U, according to the CubeSat form factor. This paper describes the educational impact that the facility has been having, during both its development and commissioning phases, as well as its early use as a testbed for CubeSats attitude control, which is currently focused on magnetic-based actuation.

떫은 감 추출물을 이용한 탈모 예방에 미치는 기능성 효과 연구

Astrigent persimmon fruit resources have been used traditionally to treat different systemic diseases and acclaimed for various biological activities including hair growth. This study investigates the hair restoration efficacy of astrigent persimmon fruit extracts on genetically predisposed to balding pattern Black mice model. Water extract of astrigent persimmon fruit(10 mg/mouse/day) with standardized vehicle formulation, only vehicle and positive control minoxidil (2%) were applied daily until completion of two full hair growth generations. The changing pattern of hair growth were observed through two hair growth generations of C57BL/6 Black mice. The hair existing area and hair length was increased significantly (P > 0.001) in astrigent persimmon fruit treated mice than vehicle-treated control mice. Furthermore, histological assessment revealed that the number of hair follicles did not remarkably increase after astrigent persimmon fruit treatment in compare to control mice. Thus, our data revealed that the topical application of astrigent persimmon fruit may promote hair growth in nude mice by extend the hair existing area and increase hair length which is an indicator of prolong anagen phase.

Vertical stratification of seed-dispersing vertebrate communities and their interactions with plants in tropical forests.

Vertical stratification (VS) is a widespread phenomenon in plant and animal communities in forests and a key factor for structuring their species richness and biodiversity, particularly in tropical forests. The organisms composing forest communities adjust and shape the complex three-dimensional structure of their environment and inhabit a large variety of niches along the vertical gradient of the forest. Even though the degree of VS varies among different vertebrate groups, patterns of compositional stratification can be observed across taxa. Communities of birds, bats, primates, and non-flying small mammals are vertically stratified in terms of abundance, species richness, diversity, and community composition. Frugivorous members of these taxa play important roles as seed dispersers and forage on fruit resources that, in turn, vary in quantity and nutritional value along the vertical gradient. As a consequence, plant-seed disperser interaction networks differ among strata, which is manifested in differences in interaction frequencies and the degree of mutual specialization. In general, the canopy stratum is composed of strong links and generalized associations, while the lower strata comprise weaker links and more specialized interactions. Investigating the VS of communities can provide us with a better understanding of species habitat restrictions, resource use, spatial movement, and species interactions. Especially in the face of global change, this knowledge will be important as these characteristics can imply different responses of species and taxa at a fine spatial scale.

The effect of fermented Huyou juice on intestinal microbiota in a high-fat diet-induced obesity mouse model.

This study mainly discussed the effect of fermented Huyou juice (FHJ) on modulating the intestinal microbiota of human, and anti-obesity mechanisms. Through the way of metagenomics, the effect of FHJ on gut flora has been summarized with a mice model of obesity induced by human flora-associated (HFA) high-fat diet. The results showed that the FHJ ameliorated the gut dysbiosis caused by obesity. When receiving FHJ treatment, a dramatic decrease in Firmicutes/Bacteroidetes occurred. What's more, having experienced 8weeks of FHJ intervention, KEGG pathways of two-component system, ATP-binding cassette (ABC) transporters, and biosynthesis of amino acids made the most differentially expressed genes more abundant, the unigene numbers are 16781,480, and 1,221, respectively. Our results may be of great significance to the use of FHJ which serves as a functional fermented beverage product with the underlying effect of treating the obesity induced by high-fat diet. The FHJ helps to improve the host health by regulating the intestinal flora and affecting some metabolic pathways. PRACTICAL APPLICATIONS: The fermentation of Huyou juice is one of the important ways to develop and utilize fruit resources. It is a common way of fruit and vegetable juice fermentation with mixed strains. After fermentation, the juice produces a large number of bioactive peptides, and sugar, toxic substances, and antinutritional material will be reduced, the nutritional value of the fruits and vegetables were improved. At the same time, the fermented juice industry could develop various functional health products, which is conducive to the transformation, upgrading, and sustainable development of Changshan Huyou.

Interspecific interactions among functionally diverse frugivores and their outcomes for plant reproduction: A new approach based on camera-trap data and tailored null models.

The study of plant-frugivore interactions is essential to understand the ecology and evolution of many plant communities. However, very little is known about how interactions among frugivores indirectly affect plant reproductive success. In this study, we examined direct interactions among vertebrate frugivores sharing the same fruit resources. Then, we inferred how the revealed direct interspecific interactions could lead to indirect (positive or negative) effects on reproductive success of fleshy fruited plants. To do so, we developed a new analytical approach that combines camera trap data (spatial location, visitor species, date and time, activity) and tailored null models that allowed us to infer spatial-temporal interactions (attraction, avoidance or indifference) between pairs of frugivore species. To illustrate our approach, we chose to study the system composed by the Mediterranean dwarf palm, Chamaerops humilis, the Iberian pear tree, Pyrus bourgaeana, and their shared functionally diverse assemblages of vertebrate frugivores in a Mediterranean area of SW Spain. We first assessed the extent to which different pairs of frugivore species tend to visit the same or different fruiting individual plants. Then, for pairs of species that used the same individual plants, we evaluated their spatial-temporal relationship. Our first step showed, for instance, that some prey frugivore species (e.g. lagomorphs) tend to avoid those C. humilis individuals that were most visited by their predators (e.g. red foxes). Also, the second step revealed temporal attraction between large wild and domestic frugivore ungulates (e.g. red deer, cows) and medium-sized frugivores (e.g. red foxes) suggesting that large mammals could facilitate the C. humilis and P. bourgaeana exploitation to other smaller frugivores by making fruits more easily accessible. Finally, our results allowed us to identify direct interaction pathways, that revealed how the mutualistic and antagonistic relations between animal associates derived into indirect effects on both plants seed dispersal success. For instance, we found that large-sized seed predators (e.g. ungulates) had a direct positive effect on the likelihood of visits by legitimate seed dispersers (e.g. red foxes) to both fleshy fruited plants. Then, seed predators showed an indirect positive effect on the plants' reproductive success. Our new analytical approach provides a widely applicable framework for further studies on multispecies interactions in different systems beyond plant-frugivore interactions, including plant-pollinator interactions, the exploitation of plants by herbivores, and the use of carcasses by vertebrate scavengers.

Factors influencing riverine utilization patterns in two sympatric macaques

Many species of terrestrial animals, including primates, live in varied association with the aquatic (e.g., riverine or coastal) environment. However, the benefits that each species receive from the aquatic environment are thought to vary depending on their social and ecological characteristics, and thus, elucidating those benefits to each species is important for understanding the principles of wild animal behaviour. In the present study, to gain a more complete picture of aquatic environment use, including social and ecological factors in primates, factors affecting riverine habitat utilization of two macaque species (Macaca nemestrina and M. fascicularis) were identified and qualitative comparisons were made with sympatric proboscis monkeys (Nasalis larvatus), which have different social and ecological characteristics. Temporal variation in sighting frequency of macaques at the riverbanks was positively related to the fruit availability of a dominant riparian plant species and negatively related to the river water level which affects the extent of predation pressure. Riverine utilization of macaques was greatly influenced by distribution and abundance of food (especially fruit) resources, possibly in association with predation pressure. Additionally, qualitative ecological comparisons with sympatric proboscis monkeys suggest that the drivers of riverine utilization depend on the feeding niches of the species, and different anti-predator strategies resulting from their differing social structures.

Violent discharges: the French breast in British revolutionary era caricature

ABSTRACT After some initial enthusiasm, public sympathy for the French Revolution waned in Britain in the 1790s. Growing violence stirred suspicion that revolutionary principles were giving way to radical despotism, and that anarchy was imminent. Satirical prints captured and propagated this disillusion, caricaturing the French as grotesque and threatening. The female body proved an especially fruitful resource; a colourful cast of cannibalistic crones, haggard fishwives, and monstrous viragos allied anxieties about radical femininity with Revolutionary corruption. The breast emerged as an evocative emblem of French unnaturalness—it appeared bare, bulbous, sagging, shrivelled, and even suckling snakes. But despite its prevalence, scholarship has overlooked one of its key incarnations. This article analyses caricatures of the French breast as physically threatening—flaming, reinforced by a gun, or shooting poisonous discharges. Mobilising medical, moral, and philosophical perspectives, it shows how it was used to position France as Britain’s dangerous and degenerate ‘other’.

МИРОВОЕ ПРОИЗВОДСТВО И МЕЖДУНАРОДНАЯ ТОРГОВЛЯ ПЛОДОВО-ЯГОДНОЙ ПРОДУКЦИЕЙ

Horticulture is an important branch of agriculture with particular importance in some countries of the world. The production of fruits, berries and nuts is an important part of forming a high-grade food supply for the population in many countries, including the developing ones. Basing on the statistical data from the Food and Agriculture Organization of the United Nations (UN), the authors examined the change in the production volume of these products in the world as a whole for 1961-2018, as well as for the period 1992-2018 in some countries - twenty largest producers in 2018; and a number of trends were identified. In particular, it was noted that in 2018 the global gross harvest of fruits and berries increased by 4.34 times compared to 1961, while that of nuts - by 7.04 times. A deeper analysis in the context of states, which are the main producers of fruits, berries and nuts, carried out for 1922-2018, indicates that there is a change in the positions of these countries in the corresponding world ranking. The quantitative and qualitative changes we observe inevitably have a significant impact both on the volume of the world market in terms of production, and, consequently, the supply of fruit and berry products, and on the parameters of international trade in fruits, berries and nuts. Due to the fact that the Russian Federation is not among the countries - largest producers of fruit and berry products (in 2018 it was the 31st in the global rating for fruits and berries, and the 52nd for nuts), it occupies a very significant position in the world on its imports, especially on some of them. In connection with the policy of import substitution, deployed in response to sanctions from a number of Western states, some positive changes are also observed in the Russian gardening industry. However, imports in the resources of fruits and berries still amounted to 53.6% in 2018. Naturally, many types of fruit and berry products are economically inexpedient to cultivate on an industrial scale in the natural and climatic conditions of our country, but it is necessary to carry out scientifically grounded and systematic work to increase the production of relatively traditional for Russia fruit and berry plants in the large-scale commodity sector.

Songbird Use of Native and Invasive Fruit in the Northeastern USA

ABSTRACTFruit is consumed by songbirds, yet whether or not it comprises an important component of habitat quality depends on the extent to which it is used by birds. In addition, there is evidence fruits of exotic invasive species may be nutritionally inferior to fruits of native species, so the influence of plant invasion on bird body condition is of interest to managers. Birds that consume invasive fruits may also serve as seed vectors, and consumption of fruits of invasive species may exacerbate invasion. Thus, the extent to which songbirds consume fruits of native versus invasive plant species, influence of plant invasion on bird body condition, and extent to which birds exhibit foraging behaviors that elevate their potential to act as dispersers of invasive species have important implications for habitat management. To understand bird use of native and invasive fruits and the potential role of birds in dispersing invasive plants, we observed bird foraging, measured body condition indices of birds captured in mist nets, measured available fruits of native and invasive plants, and calculated indices of seed dispersal for bird species based on fruit handling and consumption, within 16 shrubland sites in western Massachusetts, USA. Our findings indicate that birds use fruit extensively (57% of foraging events), use varied among species, and frugivorous species at our sites generally chose the fruit of native species, especially Prunus, over fruits of invasive species. Body condition indices were negatively related to the proportion of invasive fruit in most cases. In general, birds were better dispersers for native fruits than for invasive fruits. Our findings support the value of native fruit resources as a component of habitat quality, and, conversely, suggest that nonnative plant invasion may lead to reduced habitat quality for songbirds. © 2020 The Wildlife Society.

Crop type and within-field location as sources of intraspecific variations in the phenology and the production of floral and fruit resources by weeds

In arable farming, weeds provide important floral and seed resources that have the potential to support the provision of ecosystem services such as pollination or pest control. Estimating the production of these weed resources in the landscape is however not trivial as large-scale surveys of weed communities are usually conducted once in the season with a timing that may not coincide with the flowering and fruiting stages of all weed species. More, intraspecific variation in the mortality and phenology of individual weed species may arise from differences in the quality of the growing environment of each plant. In this study, we monitored the phenology of 30 common weed species in the field core and the field edge of 64 commercial fields grown with 6 crop types. Our hypothesis was that the production of resources by an individual plant would be modulated by its within-field location and by the crop type where it grows. We quantified floral (proportion, starting date and duration of flowering, dry biomass at flowering as a proxy for the amount of flowers) and seed resource production (proportion and starting date of fruiting). For most species, flowering and fruiting success were higher in field edges than in field cores and were lower in cereal crops than in other crops. Weeds flowered and fruited earlier and the flowering period was longer in field edges, except those of cereal crops. Dry biomass at flowering varied with field location either way, depending on the weed species, but tended to be lower in cereal crops than in other crops. This important intraspecific phenological variability in the production of seed and/or flower or resources should be considered when evaluating the contribution of weed communities to ecosystem services. It also suggests that within an agricultural landscape, the amount, timing and duration of provision of services by weeds could be enhanced by maintaining sufficient lengths of field edges and by growing a diversity of crop types.

When Northern Pigtailed Macaques (Macaca leonina) Cannot Select for Ideal Sleeping Sites in a Degraded Habitat

Primates must select sleeping sites carefully to maximize fitness. In habitats with diminished quality and availability of resources, sleeping site selection becomes an even more crucial aspect of primate survival. We investigated sleeping site selection patterns in northern pigtailed macaques (Macaca leonina) living in a degraded habitat by testing the hypotheses of random selection, predation avoidance, and food proximity. We followed a group of northern pigtailed macaques in Sakaerat Biosphere Reserve, northeastern Thailand, over 14 months between February 2017 and October 2018. We identified 107 total sleeping sites and analyzed the forest structure at 50 sleeping sites and 50 randomly selected available sites. While the rate of reuse was low and random (N = 15), with sleeping sites characterized by a low availability of large and tall trees, the selection pattern was not random, with sleeping sites occurring more often in familiar areas (i.e., high site fidelity), and those with a greater number of stems and a higher canopy. These sleeping site characteristics were likely selected to decrease detection by predators and facilitate macaque escape in case of attack, supporting the predator avoidance hypothesis. However, food proximity also played a key role in sleeping site selection in this degraded habitat. Macaques often slept within, or close to, their first/last feeding site and selected their sleeping sites following food distribution, presumably to maximize energy intake. Our results present a new impact of habitat degradation on sleeping site selection in large primate groups: the use of a high number sleeping sites in order to cope with low availability and scattered distribution of fruit resources.

Wild Blueberry Fruit Drop: A Consequence of Seed Set?

Wild blueberry is a native plant managed as a crop in northeastern North America. Fruit drop in wild blueberry, Vaccinium angustifolium Aiton, was studied over 6 years (1996–1999, 2008 and 2011). Three hypotheses were tested regarding fruit drop mechanisms from plants (clones) sampled in the field: (1) proportional fruit drop; (2) constant or uniform fruit drop; and (3) pollen or resource limitation. In addition, the temporal rate of fruit drop was measured between the end of pollination (petal fall) and fruit maturity just prior to harvest (2008 and 2011). The dynamics of fruit drop were different in the two years. The role of pollination intensity in fruit drop was also assessed. Evidence for both proportional fruit drop and resource limitation at the clone level was found but only proportional drop at the field level. Low levels of seed set are associated with fruit drop. In a four-year study (1996–1999), fruit drop ranged from 23.3 to 49.4% of the total set fruit. Partitioning the variance in fruit drop between years, fields and clones (plant genotypes) showed that the highest variation is between stems within clones (37.4%) and clones (plant genotype) within fields (35.4%), followed by between fields (19.8%) and between years (7.4%).

Isolation, diversity, and antimicrobial activity of fungal endophytes from Rohdea chinensis (Baker) N.Tanaka (synonym Tupistra chinensis Baker) of Qinling Mountains, China.

Endophytic fungi have been emerged as fruitful resources for producing structurally fascinating and biologically active secondary metabolites. However, endophytic fungi from medicinal plants of Qinling Mountains–the most important natural climatic boundary between the subtropical and warm temperate zones of China with an astonishingly high level of biodiversity–have rarely been explored as potential sources of novel fungal species and active secondary metabolites. In this study, a total of 371 fungal colonies were successfully isolated from 510 tissue segments of the medicinal Tupistra chinensis Baker collected from Qinling Mountains, China. Roots of T. chinensis Baker are used as a folk medicine to ameliorate pharyngitis and treat rheumatic diseases. A total of 100 representative morphotype strains were identified according to ITS rDNA sequence analyses and were grouped into three phyla (Ascomycota, Basidiomycota, Mucoromycota), seven classes (Dothideomycetes, Sordariomycetes, Eurotiomycetes, Microbotryomycetes, Agaricomycetes, Leotiomycetes, Mortierellomycetes), and at least 35 genera. The genera of Collectotrichum (IF, 29.92%), Fusarium (IF, 8.36%), Aspergillus (IF, 8.09%), and Dactylonectria (IF, 5.39%) were most frequently isolated from the tissues of T. chinensis Baker. The Species Richness Index (S, 65) and the Shannon-Wiener Index (H′, 3.7914) indicated that T. chinensis Baker harbored abundant fungal resources. Moreover, five isolates were potential new taxa because of low similarity of ITS sequences ranged from 95.09%∼96.61%. Fifteen out of 100 endophytic fungal ethyl acetate extracts exhibited inhibitory activities against at least one pathogenic bacterium or fungus. Two important lead compounds produced by two stains (F8047 and F8075) with high antimicrobial activities were identified using high performance liquid chromatography (HPLC) and ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry (UPLC–QTOF MS) analyses. In addition, it was noteworthy that the strain F8001, which may be a potential new species, showed antimicrobial activity and should be investigated further. Overall, these results indicated that the endophytic fungi from T. chinensis Baker could be exploited as a novel source of bioactive compounds.

The Long-Running Debate about Brexit on Social Media

Online social media platforms have become a major place where people also discuss their opinions and express their feelings about socio-political phenomena such as elections and referendums. Human-generated online content is a fruitful resource for a deeper understanding of these happenings. In this study, we present a dataset comprising 45 months (from January 2016 until September 2019) of long-running discussions on Twitter about the Brexit referendum, which can be used by social scientists and journalists for understanding the evolution of the public debate about the phenomenon. This dataset comprises 50.8 million tweets and 3.97 million users, and is also enriched with additional meta-data attributes: bot score of users, sentiment information detected by our sentiment analyzer, political stance information predicted by our stance classifier. Considering all Brexit related tweets of users during our time period, we also determine their overall stance and sentiment.

Tunable Signal Velocity in the Integer Quantum Hall Effect of Tailored Graphene

Topological properties in condensed matter physics are often claimed to be a fruitful resource for technical applications, but so far they only play a minor role in applications. Here we propose to put topological edge states to use in tailored graphene for Fermi velocity engineering. By tuning external control parameters such as gate voltages, the dispersions of the edge states regime are modified in a controllable way. This enables the realizations of devices such as tunable delay lines and interferometers with switchable delays.

The Intrinsic Biological Identities of Iron Oxide Nanoparticles and Their Coatings: Unexplored Territory for Combinatorial Therapies.

Over the last 20 years, iron oxide nanoparticles (IONPs) have been the subject of increasing investigation due to their potential use as theranostic agents. Their unique physical properties (physical identity), ample possibilities for surface modifications (synthetic identity), and the complex dynamics of their interaction with biological systems (biological identity) make IONPs a unique and fruitful resource for developing magnetic field-based therapeutic and diagnostic approaches to the treatment of diseases such as cancer. Like all nanomaterials, IONPs also interact with different cell types in vivo, a characteristic that ultimately determines their activity over the short and long term. Cells of the mononuclear phagocytic system (macrophages), dendritic cells (DCs), and endothelial cells (ECs) are engaged in the bulk of IONP encounters in the organism, and also determine IONP biodistribution. Therefore, the biological effects that IONPs trigger in these cells (biological identity) are of utmost importance to better understand and refine the efficacy of IONP-based theranostics. In the present review, which is focused on anti-cancer therapy, we discuss recent findings on the biological identities of IONPs, particularly as concerns their interactions with myeloid, endothelial, and tumor cells. Furthermore, we thoroughly discuss current understandings of the basic molecular mechanisms and complex interactions that govern IONP biological identity, and how these traits could be used as a stepping stone for future research.

Interdisciplinary Nature of Architectural Discourse within the Triangle of Architecture, Sociology and Literary Fiction

With the supposition that architectural discourse has an interdisciplinary nature, this study aims to display the way literary fiction borrows several themes from architectural discourse in order to form its “literary spaces” as well as the way architectural discourse borrows several themes from other social sciences, especially from sociology. Thus, new wave science fiction writer J.G. Ballard’s literature provides a fruitful resource for the construction of this study. It will be demonstrated that spatial data within the five selected works of Ballard exist in a similar way within architectural discourse of the recent past that criticizes modern architectural movement via several themes. An analysis will be made parallel to the discourses of the critiques of modern architectural discourse. In this sense, intersecting both the discourse of architecture and that of Ballard, there emerge three common themes to focus on: social isolation, class discrimination as a result of social isolation, and alienation in the modern world. While displaying the mediatory role of architectural discourse between sociology and literary fiction through reading in the spatiality of the text, the study will also draw lessons to be learned from Ballard’s works emphasizing the production of design theory through the field of discourse.

Fruit resource provisioning for avian frugivores: The overlooked side of effectiveness in seed dispersal mutualisms

Abstract Mutualistic interactions between frugivorous birds and fleshy‐fruited plants are key processes for both natural plant regeneration and the maintenance of birds relying on fruit resources. However, seed dispersal effectiveness (SDE) has been frequently studied only from the plant's perspective, that is the contribution of animals to plant fitness. Using a sample of Atlantic rainforest avian frugivores, this study presents a first comparative, empirical study of fruit effectiveness as a nutritional food resource for seed‐dispersing birds through the use of resource‐provisioning effectiveness (RPE) models. RPE is the product of the amount of fruits a frugivore can consume (quantity component) and the quality of the ingesta in terms of energy and nutrients obtained (quality component). Our results show wide variation in RPE among fleshy‐fruited plant species. Energy‐rich fruits consistently show a smaller quantity component, while energetically poor fruits are consistently the most consumed, with fruit species spanning a gradient from these two extremes. The specific RPEi resulting from a pairwise fruit–frugivore interaction is positively correlated with the total RPE (RPET) that a given fruit species has for the whole frugivore assemblage. RPE therefore appears to be a characteristic feature of the fruit species, rather than of the specific frugivore partner. Only the fruit's specific energy content showed a significant phylogenetic signal, suggesting potential constraints for free covariation between RPE and SDE of fruits and frugivores. Synthesis. We analyse variation in the effectiveness of fleshy‐fruit food provisioning to avian frugivores by explicitly redefining RPE within the SDE framework. We found ample variation in RPE among plant species, showing differences in both quantity and quality components of fruit resources rewards for the frugivores. Our findings help unravel how seed‐dispersing birds may discriminate among alternative fruit resources and to understand the configuration of mutual dependencies among mutualistic partners.

Palm fruit colours are linked to the broad-scale distribution and diversification of primate colour vision systems.

A long-standing hypothesis in ecology and evolution is that trichromatic colour vision (the ability to distinguish red from green) in frugivorous primates has evolved as an adaptation to detect conspicuous (reddish) fruits. This could provide a competitive advantage over dichromatic frugivores which cannot distinguish reddish colours from a background of green foliage. Here, we test whether the origin, distribution and diversity of trichromatic primates is positively associated with the availability of conspicuous palm fruits, i.e. keystone fruit resources for tropical frugivores. We combine global data of colour vision, distribution and phylogenetic data for more than 400 primate species with fruit colour data for more than 1700 palm species, and reveal that species richness of trichromatic primates increases with the proportion of palm species that have conspicuous fruits, especially in subtropical African forests. By contrast, species richness of trichromats in Asia and the Americas is not positively associated with conspicuous palm fruit colours. Macroevolutionary analyses further indicate rapid and synchronous radiations of trichromats and conspicuous palms on the African mainland starting 10 Ma. These results suggest that the distribution and diversification of African trichromatic primates is strongly linked to the relative availability of conspicuous (versus non-conspicuous) palm fruits, and that interactions between primates and palms are related to the coevolutionary dynamics of primate colour vision systems and palm fruit colours.

Revolution or legality? Confronting the spectre of Marx in Habermas’s legal philosophy

As early as 1962, Jurgen Habermas was convinced that Karl Marx’s theoretical attempt to ‘turn Hegel the right side up’ had resulted in a one-sided embrace of revolution and a perilous rejection of legality and rights. Habermas would restate these remarks thirty years later in Between Facts and Norms, noting that the collapse of state socialism, with its characteristic disdain for legality and rights, culminated in the discrediting of revolutionary Marxism. This article revisits Habermas’s theoretical dichotomy between revolution and legality in view of his ambivalent relationship to ‘Marx’s spectre’ and shows its significance for Habermas’s ongoing debate with Wolfgang Streeck concerning the tension between democracy and capitalism. Using textual evidence from Marx’s neglected journalistic writings before, during, and after the 1848 revolutions, the article offers a competing perspective of Marx’s views on legality and rights at a time when their respective fates were critically at stake. A careful reconsideration of Marx’s reflections and a confrontation with his spectre offers Habermas fruitful resources for responding to Streeck’s critique and for reviving the project of ‘radical reformism’ at a time when the liberal constitutional order finds itself under attack.