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Uni-Highlights Oktober 2023 : Einladungen zu ausgewählten Veranstaltungen der Goethe-Universität
(2023)
We simultaneously considered morphology and molecular phylogeny to modify the generic classification of the ‘pyropterine clade’ (Lycidae, Erotinae, Dictyopterini). To place species previously included in Benibotarus Kôno, 1932 in reciprocally monophyletic genera, we propose Gomezzuritus gen. nov. with the type-species Dictyopterus alternatus Fairmaire, 1856. Further, we transfer Gomezzuritus alternatus (Fairmaire, 1856) comb. nov., G. longicornis (Reiche, 1878) comb. nov., and G. rubripes (Pic, 1897) comb. nov. from Benibotarus to Gomezzuritus gen. nov. The pyropterine clade contains five genera in the Palaearctic region: Pyropterus Mulsant, 1838, Gomezzuritus gen. nov., Helcophorus Fairmaire, 1891, Greenarus Kazantsev, 1995, and Benibotarus Kôno, 1932. The arrangement of longitudinal elytral costae proved misleading for consideration of relationships. Two genera in distant positions share only four primary costae (Pyropterus and Helcophorus), and three similarly distant genera share the shortened primary costa 3, resulting in three primary and four secondary longitudinal costae (Gomezzuritus, Greenarus, and Benibotarus). The larva of Gomezzuritus alternatus is described in detail, and it is compared with the larvae of other Dictyopterini, including the presumed larva of G. longicornis.
Die Tiefsee macht mehr als zwei Drittel der Erdoberfläche aus und sie beherbergt wahrscheinlich mehr als die Hälfte aller Arten auf der Erde. Und doch ist über diesen riesigen Lebensraum bislang nur wenig bekannt. Die Zoologin Angelika Brandt untersucht die uns weitgehend fremde Tierwelt der dunklen Tiefe – und hat dabei herausgefunden, wie sehr diese durch den Klimawandel und durch die anderen globalen Auswirkungen menschlichen Handelns bedroht ist.
The interactions between the lacewing Ceraeochrysa claveri (Navás) (Neuroptera: Chrysopidae) larva and the coconut mealybug Nipaecoccus nipae (Maskell) (Hemiptera: Pseudococcidae) were recorded. The third-instar lacewing larva constructed a dorsal packet using mealybug wax from both male pupal cases and the bodies of adult females. Surprisingly, live nymphs were also frequently placed into the dorsal packet. Prey mealybugs were discarded and not incorporated into the packet after consumption. When disturbed, adult female mealybugs reflex bled from their dorsal ostioles, contacting the mouthparts of the lacewing. The lacewing quickly retreated to clean the mouthparts on the substrate, providing further evidence that ostiolar fluids act as a defense mechanism for mealybugs. Despite repeatedly contacting the ostiolar fluid, the lacewing pupated and eclosed successfully. Macro video footage of dorsal packet construction and ostiolar reflex bleeding is included. This is the first report of C. claveri preying on N. nipae, the first evidence of C. claveri using mealybug wax to construct the dorsal packet, and the first account of reflex bleeding via the dorsal ostioles to deter predators in N. nipae.
ZooBank registration. urn:lsid:zoobank.org:pub:CCEE7B47-B6E9-4D36-8860-A7F4DE5E717B
Die öffentliche Dauerausstellung mit Bildern von Barbara Klemm auf dem Campus Westend hat Zuwachs bekommen: 44 neue Fotografien zeigen Motive von Auslandsreisen der langjährigen F.A.Z.-Fotografin. Damit erhält die bisherige Ausstellung im Bereich Studium, Lehre, Internationales (SLI) der Goethe-Universität auch Bilder zum Thema »Internationales«.
Die neue Goethe-Uni-App kann mehr als ihre Vorgängerin und hat einen frischen Look bekommen. Gemeinsam mit den Studierenden will Chief Information Officer Ulrich Schielein sie nun noch besser machen.
Seit Januar gibt es die Goethe-Uni-App 2.0 zum Download für IOS und Android. Einmal heruntergeladen, lässt sich mit ihr der Uni-Alltag einfacher und komfortabler organisieren. Warum es sich unbedingt lohnt, Speicherplatz auf dem Smartphone für die neue App freizuhalten, und warum ein Hackathon nicht nur etwas für Programmierer*innen ist, erläutert Ulrich Schielein, CIO der Goethe-Universität, im Interview.
The introduction informs about Black literary imaginations of Europe that reverse or complicate the (neo-)colonialist European gaze at the "African Other". It reviews the state of research and provides an overview of the aims and sources of the special issue, whose individual contributions take into account both national specificities and transnational contexts. Sandra Folie and Gianna Zocco emphasise the important role of comparative literature for the field of African European studies (and vice-versa).
This contribution gathers eight interviews with international scholars of different generations and disciplines who study Black European literatures: Elisabeth Bekers, Jeannot Moukouri Ekobe, Polo B. Moji, Deborah Nyangulu, Jeannette Oholi, Anne Potjans, Nadjib Sadikou, and Dominic Thomas. The aim is to make literary research on Black Europe more visible to scholars in comparative literature and to contribute to a discussion on research perspectives, theories, and future challenges and needs.
This article compares Chika Unigwe's novel "On Black Sisters' Street" and Sudabeh Mortezai's film "Joy", both about Nigerian women trafficked for sex work to Belgium and Austria respectively. They share a genre genealogy with slave narratives but are primarily concerned with European (neo-)colonialism. Drawing on postcolonial and intersectional theory as well as imagology, this article analyses the Black female re-imagination and strategic exoticisation of Europe in the two narratives.
This article studies two African American examples of provincialising Europe "from the inside", James Baldwin's essay "Stranger in the Village" and Vincent O. Carter's "The Bern Book", both set in 1950's Switzerland. It investigates how these texts reverse the ethnographic gaze at the "other" and use the rural Swiss scenario to imagine Europe as historically backward. While the authors differ in their intentions, both acts of provincialisation leave the superiority of European high culture intact.
A review of Mexican Stamnodes (Lepidoptera: Geometridae) with the description of 16 new species
(2023)
The Mexican Stamnodes Guenée, [1858] fauna is reviewed. Thirty-six species are documented, including sixteen new species: S. aumatlapalli sp. nov., S. calcarea sp. nov., S. carota sp. nov., S. catarina sp. nov., S. ceniza sp. nov., S. churro sp. nov., S. clara sp. nov., S. disrupta sp. nov., S. erupta sp. nov., S. favilla sp. nov., S. ferropulvisa sp. nov., S. fuego sp. nov., S. mariachi sp. nov., S. matrona sp. nov., S. saltillo sp. nov., and S. tenebrosa sp. nov.; and two new synonymies are proposed: S. artemis Rindge, 1958 syn. nov. is synonymized with S. agapetica (Dyar, 1916), and S. similis Wright, 1927 syn. nov. is synonymized with S. ululata Pearsall, 1912. Illustrations and a brief summary of the taxonomic status, biology, and distribution for each species are provided. Full descriptions accompany new species accounts. Genitalic descriptions and illustrations are provided for new species and species described from Mexico without past genitalic study, and COI barcode data are presented for 27 of the 36 species treated herein.
Chemical pollution caused by synthetic organic chemicals at low concentrations in the environment poses a growing threat to the ecological status of aquatic ecosystems. These chemicals are regularly released into surface waters through both treated and untreated effluents from wastewater treatment plants (WWTPs), agricultural runoff, and industrial discharges. Consequently, they accumulate in surface waters, distribute amongst environmental compartments according to their physicochemical properties, and cause adverse effects on aquatic organisms. Unfortunately, there is a lack of data regarding the occurrence of synthetic organic chemicals, henceforth micropollutants, in South American freshwater ecosystems, especially in Chile.
To address this research gap, we present a comprehensive dataset comprising concentrations of 153 emerging chemicals, including pesticides, pharmaceutical and personal care products (PPCPs), surfactants, and industrial chemicals. These chemicals were found to co-occur in surface waters within Central Chile, specifically in the River Aconcagua Basin. Our sampling strategy involved collecting surface water samples from streams and rivers with diverse land uses, such as agriculture, urban areas, and natural reserves. For sample extraction, we employed an on-site large-volume solid phase extraction (LVSPE) device. The resulting environmental extracts were then subjected to wide-scope chemical target screening using gas chromatography and liquid chromatography high-resolution mass spectrometry (GC- and LCsingle bondHRMS).
The dataset we present holds significant value in assessing the chemical status of water bodies. It enables comparative analysis of pollution fingerprints associated with emerging chemicals across different freshwater systems. Moreover, the data can be reused for environmental risk assessment studies. Its utilisation will contribute to a better understanding of the impact and extent of chemical pollution in aquatic ecosystems, facilitating the development of effective mitigation strategies.
Samples of Crustacea and Annelida (Polychaeta, Sipuncula, and Hirudinea) were collected in the Bering Sea and the northwestern Pacific Ocean during scientific cruise SO-249 BERING in 2016. Biological samples were collected from 32 locations by the team on-board RV Sonne using a chain bag dredge at depths ranging between 330–5,070 m, and preserved in 96% ethanol. Specimens were morphologically identified to the lowest taxonomic level possible using a Leica M60 stereomicroscope. The generated data here comprise taxonomic information as well as annotated bathymetric and biogeographic information from a total of 78 samples (26 Crustacea, 47 Polychaeta, 4 Sipuncula, and 1 Hirudinea). The dataset was prepared following Darwin Core Biodiversity standards for FAIR data sharing based on Ocean Biodiversity Information System (OBIS) and Global Biodiversity Facility (GBIF) guidelines. The standardised digitised data were then mobilised to both OBIS and GBIF under CC BY 4.0 licence to publicly share and adopt the data. As records of these important marine taxa from bathyal and abyssal depths are sparse, especially from the deep Bering Sea, the herein generated and digitised data aid in filling existing knowledge gaps on their diversity and distribution in that region. As part of the “Biogeography of the NW Pacific deep-sea fauna and their possible future invasions into the Arctic Ocean” (BENEFICIAL) project, this dataset thus not only increases our knowledge in re-assessing and uncovering the deep-sea diversity of these taxa, but also serves policy and management sectors by providing first-hand data for global report assessments.
Purpose: Monocentric, prospective study to investigate whether concomitant support of cochlear implant (CI) patients by CI-trained otolaryngologists and application of a standardized head bandage can minimize potential complications during magnetic resonance imaging (MRI).
Methods: Thirty-seven patients with 46 CIs underwent MRI with a prophylactic head bandage. All participants and the otolaryngologist at the CI center completed pre- and post-MRI questionnaires documenting body region scanned, duration of MRI and bandage wear, field strength during the scan, and any complications. If pain was experienced, it was assessed using a visual analog scale (1–10).
Results: MRI was performed without adverse events in 37.8% of cases. Magnet dislocation requiring surgical revision occurred in 2% of cases. Pain was reported in 86% of cases, often due to the tightness of the dressing. Patients with rotating, MRI-compatible magnets reported significantly less pain than participants with older-generation implants. In 11% of cases, the MRI was discontinued.
Conclusion: Serious complications during MRI in cochlear implant patients are rare. Pain is the most common adverse event, probably mainly due to the tight bandage required by most implant types. With newer generations of magnets, these patients experience less pain, no dislocation of the magnets, and no need for bandaging. Although magnet dislocation cannot be completely prevented in older generations of implants, it appears to be reduced by good patient management, which recommends examination under the guidance of physicians trained in the use of hearing implants.
Bilateral simultaneous cochlear implantation is a safe method of hearing rehabilitation in adults
(2023)
Purpose: Bilateral cochlear implantation is an effective treatment for patients with bilateral profound hearing loss. In contrast to children, adults mostly choose a sequential surgery. This study addresses whether simultaneous bilateral CI is associated with higher rates of complications compared to sequential implantation.
Methods: 169 bilateral CI surgeries were analyzed retrospectively. 34 of the patients were implanted simultaneously (group 1), whereas 135 patients were implanted sequentially (group 2). The duration of surgery, the incidence of minor and major complications and the duration of hospitalization of both groups were compared.
Results: In group 1, the total operating room time was significantly shorter. The incidences of minor and major surgical complications showed no statistically significant differences. A fatal non-surgical complication in group 1 was particularly extensively reappraised without evidence of a causal relationship to the chosen mode of care. The duration of hospitalization was 0.7 days longer than in unilateral implantation but 2.8 days shorter than the combined two hospital stays in group 2.
Conclusion: In the synopsis of all considered complications and complication-relevant factors, equivalence of simultaneous and sequential cochlear implantation in adults in terms of safety was found. However, potential side effects related to longer surgical time in simultaneous surgery must be considered individually. Careful patient selection with special consideration to existing comorbidities and preoperative anesthesiologic evaluation is essential.
Dark matter could accumulate around neutron stars in sufficient amounts to affect their global properties. In this work, we study the effect of a specific model for dark matter -- a massive and self-interacting vector (spin-1) field -- on neutron stars. We describe the combined systems of neutron stars and vector dark matter using Einstein-Proca theory coupled to a nuclear-matter term, and find scaling relations between the field and metric components in the equations of motion. We construct equilibrium solutions of the combined systems, compute their masses and radii and also analyse their stability and higher modes. The combined systems admit dark matter (DM) core and cloud solutions. Core solutions compactify the neutron star component and tend to decrease the total mass of the combined system. Cloud solutions have the inverse effect. Electromagnetic observations of certain cloud-like configurations would appear to violate the Buchdahl limit. This could make Buchdahl-limit violating objects smoking gun signals for dark matter in neutron stars. The self-interaction strength is found to significantly affect both mass and radius. We also compare fermion Proca stars to objects where the dark matter is modelled using a complex scalar field. We find that fermion Proca stars tend to be more massive and geometrically larger than their scalar field counterparts for equal boson masses and self-interaction strengths. Both systems can produce degenerate masses and radii for different amounts of DM and DM particle masses.