Colony Development Research Articles

Zaman Meleset dan Pembangunan Kolonial di Negeri-Negeri Melayu Bersekutu, 1929-1938 (The Great Depression and Colonial Development in the Federated Malay States, 1929-1938)

This article explores the connection between the phenomenon of global economic downturn with the Federated Malay States (FMS). It focuses on the economic relationship between the metropolitan power and the FMS that is subordinate to it. The necessity to continue exploiting raw materials in Malaya influenced the implementation of colonial development policies during economic downturns. However, these policies only prioritized sectors that directly contributed to the growth of the metropolitan economy. This article substantiates this situation through the development of pineapple-based food products and rice supplies in the FMS. Colonial Office sources 273, 323, 576, and 852 are utilized to construct the economic relationship between the FMS and the metropolitan power. Meanwhile, colonial administrative records in the FMS are employed to demonstrate the impact of economic downturns and colonial development on its economic structure. The findings of this study confirm the existence of a symbiotic economic relationship between the FMS and the metropolitan power. Colonial development policies were implemented to expedite the exploitation of FMS economic resources more rapidly during economic downturns. These policies also affected the role of the FMS as a supplier of food products within the British Empire’s trading network.

Influences of botanical knowledge from the East in the colonial medical developments: A case study from early modern Kerala, India

Influences of botanical knowledge from the East in the colonial medical developments: A case study from early modern Kerala, India

Breeding colony contraction of Asian openbill stork (Anastomus oscitans): an eco-spatial monitoring from Keleghai River Bank, India.

Asian openbill stork (Anastomus oscitans) colonies and also the numbers were enormous before some decades in some villages beside Keleghai River bank. However, there has been a significant decline in both the colonies and their populations. This present study investigates the rapid decline in the number of breeding colonies and birds, exploring the reasons behind this phenomenon. To address these inquiries, the study collects perceptions from various stakeholders through extensive field observations and interviews. Expeditions are conducted to comprehend the prevailing situation and associated circumstances. Qualitative observations reveal that human intervention, both direct and indirect, is limiting the development of stork colonies. Data analysis indicates that 37.5% of respondents attribute the contraction of bird colonies to changes in land use, while 26.3% point to the extermination of larger trees along the colony periphery. Additionally, 18.05% of opinions implicate the heavy use of pesticides and fertilizers in the wetland, 6.94% cite local climate change, and 11.11% cite other reasons. To validate the gathered information, the study employed temporal land use land cover (LULC) classification techniques. Random point pattern analysis from Google Image of 2023 is also utilized to reinforce the survey results. It enhances understanding of the spatio-temporal relationship. Subsequently, the study presents the correlation matrix to elucidate the relationship between stork colonies and contributing factors. It provides a clear insight into the underlying situations. Finally, a comparative analysis of the surveyed and spatial analysis information is conducted to detect and validate the perception of stakeholders. Based on these observations, the study formulates conservation measures for the bird habitat and their colonies in the study area.

First Report of Colletotrichum fructicola Causing Anthracnosis on Glycine max in Brazil

Brazil is the largest producer of soybean [Glycine max (L.) Merrill], cultivated in diverse environments and systems. This scenario can contribute to emergence of new diseases or increase the severity of secondary diseases. In March 2023, elliptical to circular, brownish lesions, 5.2–6.1 cm length and 1.1–1.5 cm width, with salmon-colored masses of conidia in the center of the lesions, were observed on the stems of soybean cultivar ‘CZ 16B17 IPRO’, in the municipality of Campos Novos, Santa Catarina, Brazil (27º25'19''S and 51º14'14''05W). The presence of 210–355 μm length and 210–232 μm width acervuli was rare, with arrows larger than the mass of conidia (Figure S1). Fragments of the infected tissues were cut, disinfected and placed in Petri dishes containing Potato Dextrose Agar (PDA) or V8-agar medium and maintained at 23 ± 2ºC and a photoperiod of 12 h dark–light cycle. After 13 days, the development of grayish-white colonies was observed on both culture media, with the formation of a mass of septate hyaline, oblong, cylindrical conidia, 13.3–15.3 µm length and 2.9–3.5 µm width, with obtuse ends. One pure monosporic isolate was selected, isolate CF1. The presence of sexual structures was observed on PDA after 13 days and in V8 after 15–20 days. Perithecia were dark brown and globose, either immersed in the culture medium or on the surface between the mycelia. Inside of perithecia, unitunicate, clavate, and cymbiform asci, 39.1–61.0 μm length and 9.6–11.7 μm width were observed, containing eight spindle-shaped and slightly curved ascospores with rounded tips 13.8–18.3 μm length and 3.0–4.2 μm width (Figure S1). Pathogenicity tests were performed on young soybean plants at V1 phenological growth stage in four repetitions. PDA disks, 7mm in diameter, with growth mycelium were placed on stems while using uninfected PDA disks as a control. Plants were incubated in a chamber at 25 ± 2°C and 90% relative humidity. Anthracnose lesions were observed only on the stems of the inoculated plants. The same pattern of symptoms was observed on the stems, and the fungus were reisolated on PDA. The colony and morphological characteristics were identical to the previously isolated fungus. For molecular characterization, the growth mycelia were collected, macerated in liquid nitrogen, and DNA was extracted using the method Doyle and Doyle (1990) with CTAB. End-point PCR was performed using the GoTaq® Flexi DNA Polymerase (Promega, USA) and the primers, ITS-1F/ITS-4, T1/Bt2b, CL1C/CL2C, GDF/GDR, and SODglo2-F/SODglo2-R (Weir et al. 2012) for the amplification of internal transcribed spacer (ITS), β-tubulin (TUB2), calmodulin (CAL), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and superoxide dismutase (SOD), respectively. Amplified fragments were sequenced and compared with the available sequences in the Genbank (www.ncbi.nlm.nih.gov/genbank/). The sequences of all five-genes (Accession numbers OR883777, OR891749, OR891750, OR891751 and OR891752, respectively) of the isolate CF1 characterized in this study showed 99% nucleotide identities whith the stand isolate ICMP 18581 of Colletotrichum fructicola. A phylogenetic tree was constructed in MEGA X (Kumar et al. 2021), containing the amplified and concatenated sequences and representative species from the Colletotrichum gloeosporioides complex. The isolate grouped only with C. fructicola clade, confirming the identity of the fungus (Figure S2). To our knowledge, this is the first study reporting the infection of C. fructicola in soybeans in Brazil, which has already been reported in China (Xu et al. 2023).

‘Like aid given by a mother to her young’: The British Overseas Airways Corporation (BOAC) and the marketing of economic development 1948–1965

This paper locates Britain’s nationalised airline, the British Overseas Airways Corporation (BOAC), in the political discourse of colonial development. Between 1939 and 1974 BOAC connected Britain to destinations across the globe for business and leisure. However, the vast majority of people in Britain could scarcely afford the luxury of flight: BOAC had the task of convincing its shareholders, of whom were paying for a product they did not use, that it served an important national purpose. This paper explores BOAC not as an airline, but as a marketer: at the heart of BOAC’s communications was a vision of Britain and its place in the world. It sought to promote its services by using the language of economic development to encourage and justify increased business abroad. In so doing, it shows how BOAC used marketing to justify its operations using political, rather than economic, messages.

The characteristics of differentiated yeast subpopulations depend on their lifestyle and available nutrients

Yeast populations can undergo diversification during their growth and ageing, leading to the formation of different cell-types. Differentiation into two major subpopulations, differing in cell size and density and exhibiting distinct physiological and metabolic properties, was described in planktonic liquid cultures and in populations of colonies growing on semisolid surfaces. Here, we compare stress resistance, metabolism and expression of marker genes in seven differentiated cell subpopulations emerging during cultivation in liquid fermentative or respiratory media and during colony development on the same type of solid media. The results show that the more-dense cell subpopulations are more stress resistant than the less-dense subpopulations under all cultivation conditions tested. On the other hand, respiratory capacity, enzymatic activities and marker gene expression differed more between subpopulations. These characteristics are more influenced by the lifestyle of the population (colony vs. planktonic cultivation) and the medium composition. Only in the population growing in liquid respiratory medium, two subpopulations do not form as in the other conditions tested, but all cells exhibit a range of characteristics of the more-dense subpopulations. This suggests that signals for cell differentiation may be triggered by prior metabolic reprogramming or by an unknown signal from the structured environment in the colony.

How seasonality, semi-natural habitat cover and compositional landscape heterogeneity affect pollen collection and development of Apis mellifera colonies in Mediterranean agro-sylvo-pastoral systems

ContextThe reduction in the abundance and diversity of flowering plant species, mainly due to landscape alteration and consequent habitat loss, negatively affects honey bee populations and is the main driver of their decline. To safeguard pollination service and food security, we need to know how landscape characteristics affect the availability of pollen sources and consequently colony performance across seasons.ObjectivesWe therefore here explore how seasonality, percentage of semi-natural habitat cover and compositional landscape heterogeneity affect the abundance, richness, diversity and composition of pollen collected by honey bees and the development of their colonies in a Mediterranean area where agro-sylvo-pastoral systems are widely spread.MethodsFor the purpose of our study, pollen samples were collected over a year from colonies of Apis mellifera placed in four sampling sites selected across a gradient of landscape heterogeneity and where semi-natural habitats were predominant at various levels within an agro-sylvo-pastoral zone. Simultaneously, the extension of the sealed brood of the same colonies was periodically evaluated.ResultsWe found that the amount of pollen collected by honey bees was positively correlated with the percentage of semi-natural habitat cover and that increasing habitat diversity at the landscape level had a significant positive effect on the richness and diversity of pollen collected by honey bees. In addition, season significantly affected the amount, diversity and composition of pollen collected by honey bees. Furthermore, bee colony growth was positively correlated with richness, diversity and amount of pollen collected by honey bees.ConclusionOur study highlights the importance of an abundant and diverse pollen diet for honey bee colony development, which in agro-sylvo-pastoral systems seems to be ensured by a heterogeneous landscape dominated by different types of semi-natural habitats.

Settlement growth and military conflict in early colonial New England 1620–1700

Property rights are secure, and violence over land can be attenuated when the treatment and delineation of the property are consistent, stable, and interpreted similarly by each party. In the absence of a mutual understanding of property rights, land-use stability becomes strained as the area of contested land between two rival parties expands—when one party (or group) is perceived as asymmetrically and rapidly accumulating land at another’s expense. While relations between Algonquian tribes and English settlers were generally peaceful in the first half of the 17th century, subsequent colonial growth accelerated and lead to violent conflict. The latter half of the 17th century experienced some of the most devastating conflicts during early colonial American development—beginning with Pequot’s War, peaking during King Philip’s War, and ending with a European proxy war in North America during King William’s War. Using probate data for 72 settlements in New England to measure the growth of farmers as a proxy for colonial territorial growth, I find a general pattern that English settlements with higher rates of population and territorial growth experienced more violent conflict during King Philip’s War. The same relationship between territorial growth and violent conflict was not as strong for wars that preceded and succeeded King Philip’s War.

Notes on the Courtship and Captive Reproduction of the Southern Vietnam Box Turtle, Cuora picturata, at the Turtle Conservation Center in Cuc Phuong National Park, Vietnam.

Endemic to only three known provinces in South Central Vietnam, Cuora picturata have faced extensive collection pressures for the food, medicinal, and pet trades. Further exacerbating their decline is the lack of protected areas where wild populations exist, with only one known population occurring within a protected area. With threats to wild populations persisting, the development of an assurance colony has been prioritized for C. picturata. The Asian Turtle Program of Indo-Myanmar Conservation has been operating the Turtle Conservation Center (TCC) in Cuc Phuong National Park since 1998. From 2020 to 2022, 24 C. picturata were acquired by the TCC from the illegal trade. With no ideal repatriation plan, these animals provided an opportunity for developing a captive assurance colony at the TCC to safeguard the species from extinction. As semi-aquatic species, box turtles in the genus Cuora are a unique group that shows variations in habitat use and behavior between species. Herein, we documented some specific courtship behaviors not yet described for C. picturata, providing insight into the unique reproductive behaviors of this species.

Heat Treatments at Varying Ambient Temperatures and Durations Differentially Affect Plant Defense to Blumeria hordei in a Resistant and a Susceptible Hordeum vulgare Line.

Our previous research showed that a powdery mildew resistant barley line (MvHV07-17) maintains its resistance to Blumeria hordei (Bh) even if plants are exposed to a long-term high temperature of 35°C for 120 h before Bh inoculation, whereas such high temperature pretreatment further increases susceptibility to infection in the susceptible barley line MvHV118-17. In the present study, we extended this approach using short-term high-temperature water treatment (49°C for 30 s) to determine how it affects powdery mildew resistance in these barley lines. We found that this short-term heat shock (HS) impaired plant defense responses, as reflected by development of Bh colonies and visible necrotic spots on leaves of MvHV07-17, which does not develop visible symptoms upon Bh inoculation under optimal growth conditions. In contrast, both HS and long-term heat stress enhanced susceptibility to Bh in MvHV118-17 plants. These results were supported by the measurement of Bh biomass using a qPCR method. Furthermore, microscopic examinations showed that HS elevated the rate of successful Bh penetration events and the spread of cell death in the surrounding mesophyll area and allowed for colony formation and sporulation in resistant barley, whereas early and effective plant defense responses, such as papilla formation and single-cell epidermal hypersensitive response, were significantly reduced. Furthermore, we found that the accumulation of hydrogen peroxide in both resistant and susceptible barley was correlated with susceptibility induced by HS and long-term heat-stress. This study may contribute to a better understanding of plant defense responses to Bh in barley exposed to heat. [Formula: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.

Comparative Study of the Effect of Pollen Substitute Diets on Honey Bees during Early Spring.

The nutritional quality of a colony significantly affects its health and strength, particularly because it is required for population growth in the early spring. We investigated the impact of various artificial pollen substitute diets on colony performance in the Republic of Korea during early spring, a critical period for colony health and growth. The colonies were provided with different diets, including the commercial product Megabee (positive control), our developed diet Test A, and four upgraded versions (Diet 1, Diet 2, Diet 3, and Diet 4) of Test A. The negative control group received no supplementary feed. Over 63 days, we observed 24 experimental colonies and assessed various parameters at the colony and individual levels. The results revealed that Diet 2 had the highest consumption and had the most positive impact on population growth, the capped brood area, colony weight, honey bees' weight, and vitellogenin levels. These findings suggested that Diet 2 is most attractive to honey bees and thus holds great promise for improving colony maintenance and development during the crucial early spring period.

Ethno-Cultural Associations as Shadow States: The Case of Ijebu Province in Western Nigeria, 1900-1960

Extant scholarly works on ethno-cultural associations (ECAs) have done little to provide a robust historical perspective on their roles in community development of British colonies in continental Africa. Thus, this paper is an attempt to fill the gap in the body of knowledge on ethno-cultural associations in colonial Africa with specific reference to Ijebu province in Western Nigeria. The study is aimed at providing a critical historical discourse on the social, economic and political roles of ethno-cultural associations in colonial Ijebu province of Western Nigeria. The study utilises primary and secondary sources. While archival materials and oral interviews provide the primary data in this discourse, books, journal articles and newspaper reports are explored as secondary data. The study found out that the efforts made by the ECAs through several strategies in colonial Ijebuland brought about meaningful development at the community level. We also found out that the ECAs represented indigenous organizational structures developed by the Ijebu people and functioned as community-wide forums for problem identification and prioritization, social and financial resource mobilization and development project implementation at the community level in colonial Ijebu province of Western Nigeria. The study concludes among other things that the ECAs were more or less shadow states and that their efforts must be seen against the background of the failure of the colonial state and the Ijebu Native Administration between 1900 and 1960.

Metagenomic analysis of the honey bee queen microbiome reveals low bacterial diversity and Caudoviricetes phages.

In eusocial insects, the health of the queens-the colony founders and sole reproductive females-is a primary determinant for colony success. Queen failure in the honey bee Apis mellifera, for example, is a major concern of beekeepers who annually suffer colony losses, necessitating a greater knowledge of queen health. Several studies on the microbiome of honey bees have characterized its diversity and shown its importance for the health of worker bees, the female non-reproductive caste. However, the microbiome of workers differs from that of queens, which, in comparison, is still poorly studied. Thus, direct investigations of the queen microbiome are required to understand colony-level microbiome assembly, functional roles, and evolution. Here, we used metagenomics to comprehensively characterize the honey bee queen microbiome. Comparing samples from different geographic locations and breeder sources, we show that the microbiome of queens is mostly shaped by the environment experienced since early life and is predicted to play roles in the breakdown of the diet and protection from pathogens and xenobiotics. We also reveal that the microbiome of queens comprises only four candidate core bacterial species, Apilactobacillus kunkeei, Lactobacillus apis, Bombella apis, and Commensalibacter sp. Interestingly, in addition to bacteria, we show that bacteriophages infect the queen microbiome, for which Lactobacillaceae are predicted to be the main reservoirs. Together, our results provide the basis to understand the honey bee colony microbiome assemblage, can guide improvements in queen-rearing processes, and highlight the importance of considering bacteriophages for queen microbiome health and microbiome homeostasis in eusocial insects.IMPORTANCEThe queen caste plays a central role in colony success in eusocial insects, as queens lay eggs and regulate colony behavior and development. Queen failure can cause colonies to collapse, which is one of the major concerns of beekeepers. Thus, understanding the biology behind the queen's health is a pressing issue. Previous studies have shown that the bee microbiome plays an important role in worker bee health, but little is known about the queen microbiome and its function in vivo. Here, we characterized the queen microbiome, identifying for the first time the present species and their putative functions. We show that the queen microbiome has predicted nutritional and protective roles in queen association and comprises only four consistently present bacterial species. Additionally, we bring to attention the spread of phages in the queen microbiome, which increased in abundance in failing queens and may impact the fate of the colony.

Thermoregulation of stingless bee colonies in boxes for rationale breeding in the Center-West of the state of Maranhão

Indigenous stingless bees of the subfamily Meliponinae are recognized as bees native to Brazil. They have an atrophied sting and are widely distributed throughout tropical regions, from Mexico to the south of Brazil on the American Continent. This study was carried out to evaluate the thermoregulatory behavior in colonies of stingless bees allocated in rational breeding boxes in the municipality of Grajaú, Central West region of the state of Maranhão. The project was developed at the IFMA Grajaú Campus, where two models of rational breeding boxes for stingless bees were made to evaluate which of the models has greater colonial development of two species of bees (Melipona fasciculata and Melipona flavolineata) when transferred from the native nests to the rational breeding boxes. To this end, digital thermometers were installed in stingless bee hives and thermo-hygrometers to monitor the maximum and minimum daily temperature for six months. Despite a wide variation in maximum and minimum external temperatures, the bees managed to maintain the temperature between 23.5º and 33.9ºC and the relative humidity between 39 and 64% inside the hives throughout the days, especially the hives in model 1. This was the most adapted prototype for rearing bees in this experiment, with good thermoregulation of stingless bee colonies throughout the day in both species over the study months.

Comparison of some biological activities of propolis and bee bread samples obtained from Apis mellifera Anatoliaca and its Muğla and Efe ecotypes

Honey and other bee products have been extensively researched in recent years due to the demand for natural products with nutritional and therapeutic qualities, as they contain high levels of biologically active compounds and valuable nutrients. In this study, antioxidant, anti-inflammatory and antimicrobial activities of bee bread and propolis samples formed after colony development by bees of different races and ecotypes accepted to core colonies in the same location were evaluated. Total phenolic, flavonoid and antioxidant content values were the the highest in propolis samples, especially in propolis from Apis mellifera anatoliaca. Values of this type gave the most effective results in almost all of the other tests performed, such as DPPH free radical scavenging, lipid peroxidation inhibition, anti-inflammatory and antimicrobial activity. In addition, the amount of phenolics detected in the phenolic component analysis of this species is higher. It was surprising that propolis samples obtained from Efe and Muğla ecotypes showed higher values, respectively, in the test for chelating activity with Fe. The fact that the values calculated for the bee breads were lower in all cases compared to the propolis samples, the highest values were calculated for the bee bread harvested from the efe ecotype, in contrast to the propolis ecotypes. None of the tested bee breads showed antimicrobial activity on selected pathogenic bacteria. Thus, with this study, it was evaluated how the differences arising from both race and ecotype and the type of bee product reflected on biological activities.

Urban abiotic stressors drive changes in the foraging activity and colony growth of the black garden ant Lasius niger

Changes in habitat characteristics are known to have profound effects on biotic communities and their functional traits. In the context of an urban-rural gradient, urbanisation drastically alters abiotic characteristics, e.g., by increasing environmental temperatures and through light pollution. These abiotic changes significantly impact the functional traits of organisms, particularly insects. Furthermore, changes in habitat characteristics also drive changes in the behavioural traits of animals, allowing them to adapt and thrive in new environments. In our study, we focused on the synanthropic ant species Lasius niger as a model organism. We conducted nocturnal field observations and complemented them with laboratory experiments to investigate the influence of night warming (NW) associated with Urban Heat Islands (UHI), light pollution (ALAN), and habitat type on ant foraging behaviour. In addition, we investigated the influence of elevated temperatures on brood development and worker mortality. Our findings revealed that urban populations of L. niger were generally more active during the night compared to their rural counterparts, although the magnitude of this difference varied with specific city characteristics. In laboratory settings, higher temperatures and continuous illumination were associated with increased activity level in ants, again differing between urban and rural populations. Rural ants exhibited more locomotion compared to their urban counterparts when maintained under identical conditions, which might enable them to forage more effectively in a potentially more challenging environment. High temperatures decreased the developmental time of brood from both habitat types and increased worker mortality, although rural colonies were more strongly affected. Overall, our study provides novel insights into the influence of urban environmental stressors on the foraging activity pattern and colony development of ants. Such stressors can be important for the establishment and spread of synanthropic ant species, including invasive ones, and the biotic homogenization of anthropogenic ecosystems.

Genetic mixing and demixing on expanding spherical frontiers.

Genetic fluctuation during range expansion is a key process driving evolution. When a bacterial population is expanding on a 2D surface, random fluctuations in the growth of the pioneers at the front line cause a strong demixing of genotypes. Even when there is no selective advantage, sectors of low genetic diversity are formed. Experimental studies of range expansions in surface-attached colonies of fluorescently labelled micro-organisms have contributed significantly to our understanding of fundamental evolutionary dynamics. However, experimental studies on genetic fluctuations in 3D range expansions have been sparse, despite their importance for tumour or biofilm development. We encapsulated populations of two fluorescent Escherichia coli strains in inoculation droplets (volumes [Formula: see text] nl). The confined ensemble of cells grew when embedded in a hydrogel-with nutrients-and developed 3D colonies with well-defined, sector-like regions. Using confocal laser scanning microscopy, we imaged the development of 3D colonies and the emergence of sectors. We characterized how cell concentration in the inoculation droplet controls sectors, growth rate, and the transition from branched colonies to quasi-spherical colonies. We further analysed how sectors on the surface change over time. We complement these experimental results with a modified 3D Eden growth model. The model in 3D spherical growth predicts a phase, where sectors are merging, followed by a steady increase (constant rate), and the experimentally analysed sectors were consistent with this prediction. Therefore, our results demonstrate qualitative differences between radial (2D) and spherical (3D) range expansions and their importance in gene fixation processes.

Zooperiphyton on Anti-Fouling Coatings and Changes of Its Coenotic Structure

The features of the zooperiphyton communities' forming on experimental substrates - protective coatings with antifouling properties, based on industrial alkyd enamel PF-167 modified by cationic biocides 1-dodecylpyridine oleate and 1-dodecylpyridinium bis(2-ethylhexyl) phosphate in the bay of the Kaniv reservoir (the Dnieper river) have been studied. Some features of successional changes in the Zebra mussel and Bryozoans' (pearlwort) communities were discussed. On the contrast to the previous years, when the water temperature in August (time of high development of bryozoan colonies) was lower, the continual succession of communities with <i>Dreissena'</i>s dominance was not interrupted by the bryozoan's development. The protective coatings containing 8% of cationic biocides demonstrated high antifouling activity. In this study, no connections between the cenotic structure and nature of antifouling coatings were found.

Honey bee colonies change their foraging decisions after in-hive experiences with unsuitable pollen.

Pollen is the protein resource for Apis mellifera and its selection affects colony development and productivity. Honey bee foragers mainly lose their capacity to digest pollen, so we expect that those pollen constituents that can only be evaluated after ingestion will not influence their initial foraging preferences at food sources. We predicted that pollen composition may be evaluated in a delayed manner within the nest, for example, through the effects that the pollen causes on the colony according to its suitability after being used by in-hive bees. To address whether pollen foraging is mediated by in-hive experiences, we conducted dual-choice experiments to test the avoidance of pollen adulterated with amygdalin, a deterrent that causes post-ingestion malaise. In addition, we recorded pollen selection in colonies foraging in the field after being supplied or not with amygdalin-adulterated pollen from one of the dominant flowering plants (Diplotaxis tenuifolia). Dual-choice experiments revealed that foragers did not avoid adulterated pollens at the foraging site; however, they avoided pollen that had been offered adulterated within the nest on the previous days. In field experiments, pollen samples from colonies supplied with amygdalin-adulterated pollen were more diverse than controls, suggesting that pollen foraging was biased towards novel sources. Our findings support the hypothesis that pollen assessment relies on in-hive experiences mediated by pollen that causes post-ingestive malaise.

The Margaret Wrong Memorial Fund, Late Colonial Development, and the Prizing of African Literatures, 1950–62

ABSTRACT: As scholars such as Caroline Ritter have recently demonstrated, late colonial development policy exercised significant influence on the print culture infrastructures of decolonizing African nations. The history of the Margaret Wrong Memorial Fund (MWMF) and its literary prize (1950–62) renders visible the influence of the ideology of late colonial development on this emergent field: while the positioning of language in the field was bound up in the metropolitan conferral of literary legitimacy on European languages (and, conversely, in African struggles to confer the same legitimacy on African vernaculars), the positioning of language in the surrounding field of power formed the site of a different kind of struggle regarding late colonial development in British Africa. Those members of the MWMF administrative committee who advocated after 1949 and through the 1950s for the inclusion of African vernaculars were appealing to the early twentieth-century ideology of Phelps-Stokeism, a theory of differentiated education for Africans that was based on a Social Darwinist assumption of racial inferiority. Associated with Wrong’s interwar and wartime work for the International Committee on Christian Literature for Africa and particularly with the late colonial development impulses of this work, the Phelps-Stokeist rationale for legitimizing African languages does not always line up neatly with African nationalist and anticolonial motivations for supporting vernaculars. The influence of late colonial development on the emergence of the postcolonial field of cultural production matters: the history of this field must be tracked via the metropolitan (British) welfare state and the emergent postwar development paradigm, both of which shaped debates about language, for instance, that have long been attributed to the influence of metropolitan publishers and the African nationalisms of figures such as Ngũgĩ wa Thiong’o, among other forces.