Dataset Information

Differences in Life History Traits in Rural vs. Urban Populations of a Specialist Ground Beetle, Carabus convexus.

ABSTRACT: Urbanization is increasing worldwide and causes substantial changes in environmental parameters, generating various kinds of stress on arthropods, with several harmful consequences. We examined a forest specialist ground beetle, Carabus convexus, in forested habitats to evaluate the changes in four important life history traits between rural and urban populations. Analyzing beetles from the overwintered cohort in their first breeding season, we found no significant differences in body length or body mass between the rural and urban individuals. Body condition, judged by fat reserve scores, was similarly poor in both habitats, indicating that beetles were not able to accumulate substantial fat reserves at either habitat. Females with ripe eggs in their ovaries were first captured at the same time in both areas. The number of ripe eggs, however, was significantly higher in females of the low-density urban population (6.13 eggs/female) than in those of the high-density rural population (4.14 eggs/female), indicating density-dependent fecundity. Altered environmental and habitat conditions by urbanization, however, seemed to cause high mortality during egg hatching and/or larval development, preventing the growth of the urban population to the level of rural one.

SUBMITTER: Magura T

PROVIDER: S-EPMC8230416 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Differences in Life History Traits in Rural vs. Urban Populations of a Specialist Ground Beetle, <i>Carabus convexus</i>.

Magura Tibor T Mizser Szabolcs S Horváth Roland R Nagy Dávid D DD Tóth Mária M Csicsek Réka R Lövei Gábor L GL

Insects 20210610 6

Urbanization is increasing worldwide and causes substantial changes in environmental parameters, generating various kinds of stress on arthropods, with several harmful consequences. We examined a forest specialist ground beetle, <i>Carabus convexus,</i> in forested habitats to evaluate the changes in four important life history traits between rural and urban populations. Analyzing beetles from the overwintered cohort in their first breeding season, we found no significant differences in body len ...[more]

PMID: 34200777

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Project description:IntroductionPlastic surgery is an essential yet underdeveloped field in many African nations, especially in rural areas. The demand for plastic surgery is increasing, but differences in access to respective services between rural and urban domiciles remain ever existent, despite the exponentiation of trauma, burns, and congenital disorders. According to this review, urban areas have access to better facilities and specialized surgeons, while rural areas frequently lack infrastructure, educated healthcare personnel, and medical resources. This review compares the quality and accessibility of plastic surgery services in African rural and urban settings in order to determine the variables influencing said differences in access.MethodsThis literature review was performed using electronic search databases comprising PubMed/MEDLINE, Google Scholar, and Africa Journals online (AJOL). Regional medical journals were also reviewed using keywords and associated Boolean operators pertaining to "plastic surgery", "plastic surgery in rural" and plastic surgery in urban" by selecting studies based on their relevance and content quality. Studies focusing on plastic surgery in Africa were included. A total of 37 articles were analyzed to provide insights into the disparities between rural and urban access to plastic surgery services in Africa. Studies not focusing on plastic surgery were excluded.ResultsThe review highlighted significant disparities in access to plastic surgery services between Africa's rural and urban areas. Rural areas usually lack medical resources, specialized surgeons, infrastructure, while urban areas have access to better facilities and specialized surgeons. Urban regions not only hail more training opportunities for surgeons but also foster further specialized facilities, greater training options, access to modern surgical equipment, sterile facilities and advanced instruments, contributing to clinical and surgical excellence alongside patient satisfaction and outcomes. However, there is a scarcity of qualified plastic surgeons in rural regions, including antiquated technology and a dearth of resources and expertise. Besides, socioeconomic variables that hinder said indifference between rural and urban areas, such as poverty, education, money, and cultural attitudes, precipitated limited access to critical surgical intervention in rural populations.ConclusionFurther research should be done on how plastic surgery services differ in urban and rural areas. Availability of financial expertise and specialists who can provide specialized care in rural settings is recommended. To enhance patient outcomes, the implementation of technological innovation, improved healthcare infrastructure, and effective training initiatives should be implemented in rural Africa. Also, in the field of plastic surgery, emphasizing the use of telemedicine and mobile surgical units may aid universal healthcare for residents in rural domiciles. Significant progress towards ensuring equitable access to high-quality plastic surgery in rural Africa may be achieved through these initiatives.

Project description:Atmospheric particulate matter (PM) is a recognized risk factor for the global burden of disease in human populations. We are presenting here the application of toxicogenomics in the evaluation of the toxic effects of organic content of atmospheric particle matter (PM), from urban and rural environments (city of Barcelona and village of La Pobla, NE Spain), using the developing zebrafish embryo. The main goal is to identify the metabolic pathways involved in the adverse effects observed in zebrafish embryos exposed to PM organic content from urban and rural environments, also allowing the selection of genes of interest that are differentially expressed. The relevance of particle size to the PM toxicity is also addressed. Indeed, the zebrafish embryos were exposed to PM of aerodynamic diameter larger than 7.2 μm and smaller than 0.5 μm (PM10 and PM0.5, respectively). PM0.5 concentrated biological and toxic activities linked to organic substances. Transcriptomic analyses showed strong induction of the AhR signalling pathway (a.k.a. dioxin-like activity) for embryos exposed to both rural and urban extracts, correlating with the concentrations of PAHs. Urban extracts, with strong contribution of traffic emissions, specifically de-regulated oxidative stress-related genes, as well as pancreatic and eye-lens specific genes, two organs known to be affected by air pollution in humans. Exposure to rural extracts, with high contribution of wood burning emissions, affected genes implicated in basic cellular functions, in agreement with their strong embryotoxicity. Extracts from rural and urban samples elicited both common and specific transcriptome responses, suggesting different potentially adverse outcomes depending on PM source and composition. The authors thank the financial support of the Spanish Ministry (project TEA-PARTICLE, grant number CGL2011-29621) and the Portuguese Foundation for Science and Technology for the doctoral grant of Sofia R. Mesquita (SFRH/BD/80710/2011) funded by the Program POPH-QREN through the Portuguese Ministry of Education and Science and the European Social Fund, and support through project PEst-C/MAR/LA0015/2013.

Dataset Information

Differences in Life History Traits in Rural vs. Urban Populations of a Specialist Ground Beetle, Carabus convexus.

Publications

Differences in Life History Traits in Rural vs. Urban Populations of a Specialist Ground Beetle, <i>Carabus convexus</i>.

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