To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure no-reply@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Neodiplostomum vaucheri Dubois, 1983 is a digenean trematode originally described from the intestine of the woolly false vampire bat, Chrotopterus auritus (Peters, 1856), in the northwestern Peruvian Amazon. Decades later, it was also reported from the fringe-lipped bat, Trachops cirrhosis (Spix, 1823), in Ecuador. During a helminthological survey of phyllostomid bats at the Kawsay Biological Station in Madre de Dios, southeastern Peruvian Amazonia, specimens of Neodiplostomum Railliet, 1919 were recovered from the intestine of T. cirrhosus. Morphological comparisons with the holotype confirmed these specimens as conspecific with N. vaucheri. Phylogenetic inference supported the morphological identification, recovering the Peruvian isolate with an N. vaucheri isolate from another South American region within the same clade, with strong support (ML = 90; BI = 0.9587). The observed genetic divergence (4.47% under the Kimura two-parameter model and 4.27% based on uncorrected p-distances) in the partial cox1 sequence may indicate cryptic diversity, as previously noted in congeners. This represents the first integrative characterization of a digenean from a bat host in Peru, contributing to our understanding of parasite diversity in neotropical chiropterans. Furthermore, the use of third-generation sequencing technology (Oxford Nanopore) proved effective for generating reliable partial gene sequences, underscoring its applicability in molecular helminthology.
The secretion of glucagon-like peptide-1 (GLP-1) is stimulated by luminal nutrients after meal ingestion. Diet-induced obesity (DIO) may affect nutrient-induced GLP-1 secretion in humans and rodent models. We previously demonstrated that mixed meal-induced GLP-1 secretion is enhanced in rats with DIO compared with normal rats. However, it is unclear to which nutrient the GLP-1 secretion is adaptively enhanced or reduced during the development of DIO. The present study investigated the effect of obesity on the GLP-1 secretion to individual nutrients and further on GLP-1 secretory functions of the proximal and distal small intestine in rats. Male Sprague-Dawley rats were fed a control diet or a high-fat diet with sucrose solution (HFS) for 4–5 weeks. GLP-1 responses to a single oral administration of a liquid diet, dextrin, soyabean oil or whey protein were examined after 4 weeks of dietary intervention. In addition, a liquid diet was administered to the proximal or distal small intestine of anaesthetised rats (control or HFS), and GLP-1 levels in the portal vein plasma were measured. In HFS-fed rats, GLP-1 secretion to dextrin, soyabean oil and whey protein slightly increased compared with those in normal rats. Furthermore, the GLP-1 response to liquid diet administration into the lumen was greater in the distal, but not proximal, small intestine of HFS-fed rats than that in control rats. In rats with DIO, GLP-1 secretion increased, regardless of the type of nutrient. Furthermore, the distal small intestine is responsible for adaptive enhancement of the GLP-1 secretion.
Increasing recognition of the diverse benefits of human-animal interactions (HAIs) has propelled related studies. Although most of the benefits have been illustrated by academic literature (e.g. journal articles, academic theses, and project reports), the grey literature contributes to a comprehensive understanding of HAIs and offers new perspectives, informing prospective research, practices, and policies. Adapting the Systematic Reviews and Meta-Analyses (PRISMA) approach, this rapid review examined 151 articles covering HAIs from 2016–2022. The univariate analysis results revealed that the sources covered various animal species (e.g. dogs, cats, birds), types of animals (e.g. companion animals, therapy animals, zoo animals), and vulnerable populations (e.g. older adults, people with disabilities). HAIs could be found across different settings, such as households, schools, healthcare facilities, and more. The thematic analysis identified three primary categories associated with HAIs’ benefits in public education: (1) HAIs benefit the well-being of individuals, families, and animals; (2) HAIs promote prosocial behaviours and community development; and (3) HAIs improve disaster preparedness and response. The results highlight the multifaceted positive influences of HAIs on human well-being, animal welfare, and building healthy and resilient communities. Grey literature plays an essential role in knowledge mobilisation through public education, promoting the interconnectedness between human well-being and animal welfare.
In small-plot experiments, weed scientists have traditionally estimated herbicide efficacy through visual assessments or manual counts with wooden frames—methods that are time-consuming, labor-intensive, and error-prone. This study introduces a novel mobile application (app) powered by convolutional neural networks (CNNs) to automate the evaluation of weed coverage in turfgrass. The mobile app automatically segments input images into 10 by 10 grid cells. A comparative analysis of EfficientNet, MobileNetV3, MobileOne, ResNet, ResNeXt, ShuffleNetV1, and ShuffleNetV2 was conducted to identify weed-infested grid cells and calculate weed coverage in bahiagrass (Paspalum notatum Flueggé), dormant bermudagrass [Cynodon dactylon (L.) Pers.], and perennial ryegrass (Lolium perenne L.). Results showed that EfficientNet and MobileOne outperformed other models in detecting weeds growing in bahiagrass, achieving an F1 score of 0.988. For dormant bermudagrass, ResNet performed best, with an F1 score of 0.996. Additionally, app-based coverage estimates (11%) were highly consistent with manual assessments (11%), showing no significant difference (P = 0.3560). Similarly, ResNeXt achieved the highest F1 score of 0.996 for detecting weeds growing in perennial ryegrass, with app-based and manual coverage estimates also closely aligned at 10% (P = 0.1340). High F1 scores across all turfgrass types demonstrate the models’ ability to accurately replicate manual assessments, which is essential for herbicide efficacy trials requiring precise weed coverage data. Moreover, the time for weed assessment was compared, revealing that manual counting with 10 by 10 wooden frames took an average of 39.25, 37.25, and 42.25 s per instance for bahiagrass, dormant bermudagrass, and perennial ryegrass, respectively, whereas the app-based approach reduced the assessment times to 8.23, 7.75, and 14.96 s, respectively. These results highlight the potential of deep learning–based mobile tools for fast, accurate, scalable weed coverage assessments, enabling efficient herbicide trials and offering labor and cost savings for researchers and turfgrass managers.
The superfamily Diplostomoidea Poirier, 1886 is a large, globally distributed group of digeneans characterized by the presence of a unique holdfast organ and parasitic in most major groups of vertebrates (birds, mammals, reptiles, fishes) as definitive hosts. A number of diplostomoideans are associated with diseases in their intermediate and, more rarely, definitive hosts. Prior to this work and upon the recent synonymization of the Brauninidae Wolf, 1903, the Diplostomoidea included 5 families: Bolbocephalodidae Strand, 1935; Cyathocotylidae Mühling, 1896; Diplostomidae Poirier, 1886; Proterodiplostomidae Dubois, 1936; and Strigeidae Railliet, 1919. The separation of these families was based primarily on the structure and shape of prosoma and holdfast organ as well as the presence/absence of cirrus sac and paraprostate. More rarely, distinguishing among families was based on life cycles and types of larval stages, excretory system or even host specificity. However, due to the inconsistent nature of most of morphological and biological characters across the Diplostomoidea and nearly universal lack of agreement on their relative value, the systematic history of the group has been extremely tumultuous, and none of many classification systems proposed over the last 140 years has become broadly accepted or supported by phylogenetic analyses. Extensive molecular phylogenetic studies of the Diplostomoidea in the last 15 years helped to partly improve the classification system and resolve multiple taxonomic questions. Notably, practically all molecular phylogenies have clearly demonstrated non-monophyly of the two largest families, the Diplostomidae and the Strigeidae and indicated it as systematic problem. We provide a brief overview of the history and current state of knowledge of diplostomoidean systematics and re-evaluate the classification system of the Diplostomoidea based on morphological and molecular evidence. We propose changes in the classification system that reconciles the traditional morphological and life cycle data with molecular phylogenies. The major element of the proposed classification system is the synonymization of the families Proterodiplostomidae and Strigeidae with the Diplostomidae as the only feasible way to resolve the problem of consistent non-monophyly of the latter two families and provide stability to the classification system.
Consciousness is an intriguing mystery, of which standard accounts all have well-known difficulties. This book examines the central question about consciousness: that is, the question of how phenomenal features of our experience are related to physical features of our nervous system. Using the way in which we experience color as a central case, it develops a novel account of how consciousness is constituted by our neural structure, and so presents a new physicalist and internalist solution to the hard problem of phenomenal consciousness, with respect specifically to sensory qualia. The necessary background in philosophy and sensory neurophysiology is provided for the reader throughout. The book will appeal to a range of readers interested in the problems of consciousness.
Cryphodera guangdongensis n. sp. was collected from the soil and roots of Schima superba in Guangdong province, China. The new species is characterised by having a nearly spherical female, with dimensions of length × width = 532.3 (423.8–675.3) × 295.6 (160.0–381.2) μm, stylet length of 35.7 (31.1–42.1) μm, protruding vulval lips, a vulval slit measuring 54.2 (47.4–58.9) μm, an area between the vulva and anus that is flat to concave, and a vulva–anus distance 49.3 (41.1–57.6) μm. The male features two lip annules, a stylet length of 31.7 (27.4–34.8) μm and basal knobs that are slightly projecting anteriorly, while lateral field is areolated with three incisures and spicules length of 27.1 (23.7–31.0) μm. The second stage juvenile is characterised by a body length of 506.1 (441.8–564.4) μm long, two to three lip annules, a stylet length 31.2 (29.7–33.2) μm which is well developed, basal knobs projecting anteriorly, a lateral field that is areolate with three incisures, and a narrow rounded tail measuring 63.2 (54.2–71.3) μm long, with a hyaline region of 35.6 (27.4–56.6) μm long that is longer than the stylet. Based on morphology and morphometrics, the new species is closely related to C. sinensis and C. japonicum within the genus Cryphodera. The phylogenetic trees constructed based on the ITS-rRNA, 28S-rRNA D2–D3 region, and the partial COI gene sequences indicate that the new species clusters with other Cryphodera species but maintains in a separated subgroup. A key to the species of the genus Cryphodera is also provided in this study.
Ultra-processed food (UPF) consumption varies with socio-economic status (SES) in adults, and evidence suggests that similar patterns exist in adolescents. However, the relationship remains understudied in this critical developmental group. This study aimed to further characterise adolescent UPF consumption and its relationship with SES by exploring dietary patterns within UPF consumption.
Design:
Using food-diary data, adolescents’ UPF intake was quantified and categorised. Principal component and clustering analysis were used to identify dietary patterns. Associations of these dietary patterns with socio-demographic characteristics were then analysed.
Setting:
Pooled data from the rolling, cross-sectional National Diet and Nutrition Survey, waves 1-to-11 (2008–2019).
Subjects:
UK adolescents (11- to18-year-olds) (n 3199).
Results:
Three UPF dietary patterns were identified: (i) the ‘Restrictive’ pattern, which included the lowest total consumption of UPF (95 % CI: 33·1, 34·9 % g/d), but elevated consumption of UPF often perceived as healthy, was associated with adolescents of a higher SES; (ii) the ‘Permissive’ pattern included 61·6 % g/d (95 % CI: 60·3, 63·0 % g/d) total UPF, dominated by ‘ready-to-eat,’ low nutrient-density UPF, and was associated with adolescents of a lower SES and (iii) the ‘Traditional’ pattern had moderate consumption of total UPF (95 % CI: 47·6, 50·9 % g/d) with higher intake of UPF used in home-cooking and had less distinct associations with SES.
Conclusion:
Results suggest that SES impacts both the amount and type of UPF consumed by adolescents in the UK, underscoring the importance of this factor when designing interventions. Distinct dietary patterns within adolescents’ high UPF diets have potential behavioural, nutritional and health implications.
Cystic echinococcosis (CE) is a significant zoonotic helminthic disease with considerable public health and economic impact in endemic regions. We aimed to analyse the climatic and environmental factors affecting the human CE cases in North Khorasan Province, northeast Iran. Using a geographic information system, we map the addresses of 316 hospitalised CE patients from 2012 to 2022 and examined the influence of climatic variables, altitude, and land cover on CE case distribution. Data were analysed using logistic regression models. Most patients were female (58.9%) and aged 21–60 years (67.4%), with liver involvement being the most common (57.3%). The multivariate model identified urban settings, irrigated and dry farms, soil temperature, and humidity as the most important geoclimatic determinants, respectively. In contrast, gardens, moderate and excellent rangelands, minimum, maximum, and mean air temperatures, and rainfall were only found to be significant factors in univariate models. High-risk areas for CE include urban and suburban regions, surrounding fields, and pastures where stray dogs and wild canids roam, livestock husbandries are present, and residents consume unsanitised vegetables. Additionally, areas with lower soil and weather temperatures and higher humidity conditions that may enhance the survival of E. granulosus eggs dispersed by canids were identified as high-risk zones. Health managers can use these findings to prioritise control programs and allocate limited resources to these areas, ultimately reducing the future incidence of CE.
The interaction of helminth infections with type 2 diabetes (T2D) has been a major area of research in the past few years. This paper, therefore, focuses on the systematic review of the effects of helminthic infections on metabolism and immune regulation related to T2D, with mechanisms through which both direct and indirect effects are mediated. Specifically, the possible therapeutic role of helminths in T2D management, probably mediated through the modulation of host metabolic pathways and immune responses, is of special interest. This paper discusses the current possibilities for translating helminth therapy from basic laboratory research to clinical application, as well as existing and future challenges. Although preliminary studies suggest the potential for helminth therapy for T2D patients, their safety and efficacy still need to be confirmed by larger-scale clinical studies.
We describe two new species of green algae in Dasycladales from Lower Cretaceous strata of the Eastern Carpathians (Romania), Suppiluliumaella schlagintweitii n. sp. and Triploporella loducai n. sp. The two new species display mineralization that coats most of the thallus, possibly casting light on their growth patterns. Suppiluliumaella schlagintweitii n. sp. displays a differentiated, club-shaped thallus with a very elongated vegetative part below the fertile zone (“head”) and a corticated external layer, suggesting a Neomeris type of growth. We further describe a possible mineralized juvenile growth stage. Triploporella loducai n. sp. is characterized by a rather short cylindrical thallus with a reduced vegetative region (sharp tapering rounded lower end), seemingly following a growth type resembling that of spherical Bornetella.
We investigate and compare the evolution of two aspects of culture, languages and weaving technologies, amongst the Kra-Dai (Tai-Kadai) peoples of southwest China and Southeast Asia, using Bayesian Markov-Chain Monte Carlo methods to uncover phylogenies. The results show that languages and looms evolved in related but different ways and bring some new insights into the spread of the Kra-Dai speakers across Southeast Asia. We found that the languages and looms used by Hlai speakers of Hainan are outgroups in both linguistic and loom phylogenies and that the looms used by speakers of closely related languages tend to belong to similar types. However, we also found differences at a deep level both in the details of the evolution of looms and languages and in their overall patterns of change, and we discuss possible reasons for this.
Aquatic ecosystem monitoring is important for supporting biodiversity and environmental stability, yet it faces increasing threats from pollution, climate change and human activities. This study presents the development and deployment of a low-cost multi-sensor data logging system for real-time monitoring of Lagos Lagoon. The system integrates temperature sensors, hydrophones, and imaging devices to collect environmental data. Results showed that temperature variations ranged from ~28.5 to 31.5 °C, with fluctuations influenced by partial and full submersion. Acoustic analysis revealed dominant frequencies below 500 Hz, indicative of biological and anthropogenic activity in the lagoon. Machine learning models trained on 31 species closely agreed with the environmental dataset despite some noticeable deviations, suggesting potential improvements through data augmentation and model refinement. Despite challenges such as signal attenuation in submerged conditions and image degradation due to water turbidity, the system successfully recorded and logged environmental parameters. This study demonstrates the feasibility of using artificial intelligence-powered, cost-effective sensor technology for continuous aquatic monitoring, with implications for biodiversity conservation and water resource management. Future research should focus on enhancing wireless communication, refining species detection algorithms and improving sensor resilience in harsh aquatic conditions.
There has been limited research into the effectiveness of penetrating captive bolt (PCB) for stunning horses (Equus caballus) at slaughter. This study observed 100 horses at a commercial abattoir in Mexico, stunned using pneumatic PCB. Animals were assessed at the time of stunning and immediately after for signs of effective/ineffective stunning and shot positioning, with macroscopic gross brain pathology conducted to determine brain trauma. Twenty-five percent (25/100) received more than one shot and 28% (28/100) displayed behavioural signs of ineffective stunning. Of these 28 animals, all had deviations of more than 10 mm from the suggested shot position outlined by the Humane Slaughter Association with rostral-caudal deviation associated with an absence of damage to the thalamus, midbrain, and pons. Forty-four percent (44/100) of animals displayed no damage to critical brain structures (thalamus, midbrain, pons and medulla), with this associated with ineffective stunning. Overall, 16% of shots missed the brain (16/100), with a higher proportion of poll shots (30%) missing the brain compared to frontal shots (12%). There is the potential, when animals are shot into the poll, for paralysis from damage to the spinal cord and caudal brainstem structures. Appropriate position, angle and performance of PCB is therefore vital to achieving an effective stun, by targeting critical brain structures responsible for maintaining consciousness and ensuring proper PCB maintenance. Animals should be routinely checked between stunning and exsanguination, with minimal time between these stages, to minimise recovery of consciousness and alleviate suffering for horses at slaughter.
The transition from breastmilk to solid foods (weaning) is a critical stage in infant development and plays a decisive role in the maturation of the complex microbial community inhabiting the human colon. Diet is a major factor shaping the colonic microbiota, which ferments nutrients reaching the colon unabsorbed by the host to produce a variety of microbial metabolites influencing host physiology(1). Therefore, making adequate dietary choices during weaning can positively modulate the colonic microbiota, ultimately contributing to health in infancy and later life(2). However, our understanding of how complementary foods impact the colonic microbiota of weaning infants is limited. To address this knowledge gap, we employed a metagenome-scale modelling approach to simulate the impact of complementary foods, either combined with breastmilk or with breastmilk and other foods, on the production of organic acids by colonic microbes of weaning infants(3). Complementary foods and combinations of foods with the greatest impact on the in silico microbial production of organic acids were identified. These foods and food combinations were further tested in vitro, individually or in combination with infant formula. Fifty-three food samples were digested using a protocol adapted from INFOGEST to mimic infant digestion and then fermented with faecal inoculum from 6 New Zealand infants (5-11 months old). After 24h of fermentation, the production of organic acids was measured by gas chromatography. Differences in organic acid production between samples were determined using the Tukey Honestly Significant Difference test to account for multiple comparisons. The microbial composition was characterised by amplicon sequencing of the V3-V4 regions of the 16S bacterial gene. Taxonomy was assigned using the DADA2 pipeline and the SILVA database (version 138.1). Bioinformatic and statistical analyses were conducted using the R packages phyloseq and ANCOM-BC2, with the Holm-Bonferroni adjustment to account for false discovery rates in differential abundance testing. Blackcurrant and raspberries increased the production of acetate and propionate (Tukey’s test, p<0.05) and the relative abundance of the genus Parabacteroides (Dunnett’s test, adjusted p<0.05) compared to other foods. Raspberries also increased the abundance of the genus Eubacterium (Dunnett’s test, adjusted p<0.05). When combined with infant formula, black beans stood out for increasing the production of butyrate (Tukey’s test, p<0.05) and the relative abundance of the genus Clostridium (Dunnett’s test, adjusted p<0.05). In conclusion, this study provides new evidence on how complementary foods, both individually or in combination with other dietary compounds, influence the colonic microbiota of weaning infants in vitro. Insights generated by this research can help design future clinical trials, ultimately enhancing our understanding of the relationship between human nutrition and colonic microbiota composition and function in post-weaning life.
Four Palaearctic species of Staphylininae (Coleoptera: Staphylinidae) are reported from North America for the first time: Heterothops cognatus Sharp, H. praevius (Erichson), Philonthus chujoi Dvořák, and Quedius (Raphirus) maurorufus (Gravenhorst). We suspect that these species are part of a more recent cohort of accidental introductions to North America. Notably, two of them are native to the East Palaearctic, an unusual source of adventive staphylinids in North America because nearly all others are native to Central Europe. We suggest that the East Palaearctic is an underrecognised and increasingly important source for recently adventive soil invertebrates and that increased taxonomic focus on this fauna is important to North American biosecurity. The detection of trans-Palaearctic H. praevius resulted in the recognition of H. praevius Erichson (= H. marmotae Smetana syn. nov.). We also newly report the Nearctic species Heterothops conformis Smetana and H. sordidus Smetana from eastern North America. Philonthus debilis, a close relative of P. chujoi, is reported from the Yukon Territory, representing the northernmost locality known for this long-established adventive species. Illustrations of diagnostic features, barcode data, and distribution maps are provided for all four species. Updated or new identification keys are provided to aid in the recognition of these species in eastern North America.
Cardiovascular disease (CVD) is the most potent killer in Aotearoa New Zealand (NZ) with South Asians being one of the three high-risk groups. This study aimed to investigate health beliefs, knowledge, and behaviours related to diet among NZ South Asians at risk of CVD, using a mixed-methods approach. Demographics and dietary data were collected via an online Qualtrics survey and qualitative data on health beliefs and knowledge about heart-healthy foods were collected using semi-structured phone interviews. Twenty-one South Asian participants with diagnosed type 2 diabetes and/or hypertension and/or hypercholesterolemia were recruited via stakeholder engagement and advertisements through South Asian cultural and religious organisations.The majority of participants (62%) were aged 35-50 years, 10 were female, 11 were male and 67% were long-term residents of NZ. Most participants were unsure of the recommendations for fruit and vegetable consumption and only 48% and 29% met these guidelines, respectively. This is worrying as NZ Health survey data show a steady decrease in fruit and vegetable consumption among South Asians over 20 years with only 27% meeting the guidelines in 2021. (1) Sixty-two percent of participants consumed milk and yoghurt ≥ 4 times a week; 63% consumed full-fat milk and 45% consumed full-fat yoghurt regularly. These findings are consistent with that found for healthy South Asians in NZ,(2) where dairy, the primary source of saturated fats in South Asian cuisine, increased post-migration. Some participants believed that full-fat dairy increases the risk of heart disease, yet they still preferred to use full-fat milk and ghee as they believed it is healthier than low-fat varieties. Most participants believed that salty foods and pickles increase the risk of heart disease with 33% consuming salted pickles “sometimes” and only 28% choosing “low or reduced salt” food varieties “regularly/always”. More than half (57%) chose reduced-fat varieties of foods deliberately to reduce their risk of CVD. Red meat and deep-fried fatty foods were the most common foods that most participants thought they should avoid; however, some were not sure. Foods that participants considered heart-healthy were green vegetables, lentils and ghee in moderation. Most meat-consuming participants were unaware of healthy cuts of meat with only 38% reporting always choosing low-fat cuts of meat. Most participants believed that they could take some measures to reduce their risk of heart disease. Nevertheless, their health beliefs were not consistent with knowledge of or behaviours concerning heart-healthy measures. Substantial knowledge gaps evident in the reported dietary behaviours need to be addressed to reduce the risk of CVD among at-risk South Asians.