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Looking at upside-down ants: Taxonomic revision of the Neotropical species of Odontomachus Latreille, 1804 (Hymenoptera: Formicidae: Ponerinae).
Zootaxa
September 2024
Universidade Federal do Paraná (UFPR); Departamento de Zoologia - Curitiba; PR; Brazil.
Article Synopsis
- The study revises the taxonomy of Neotropical Odontomachus ant species, identifying four new species and synonymizing one, resulting in a total of 27 recognized species in the region.
- It includes detailed descriptions of worker ants, gynes (queens), and males, along with high-quality images and dichotomous keys to aid identification.
- The findings also highlight morphological variabilities that suggest the presence of cryptic species and emphasize the need for further research on male genitalia to understand species relationships better.
Technical challenges and outcomes of stereotactic biopsies in the posterior fossa: Experience with ZD-inomed and leksell vantage frames.
Acta Neurochir (Wien)
November 2024
Department of Neurosurgery, Medizinische Fakultät und Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Germany.
Introduction: Stereotactic brain biopsies are essential for obtaining tissue samples from brain lesions, crucial for comprehensive histological analysis and subsequent adjuvant therapies. While most biopsies target supratentorial lesions, those involving the posterior fossa are less frequent but pose significant technical and surgical challenges, necessitating careful patient management.
Methods: We present our experience with stereotactic biopsies of the posterior fossa using the Leksell Vantage frame (Elekta, Stockholm, Sweden) and the ZD Inomed frame (Inomed Medizintechnik GmbH, Emmendingen, Germany).
A new interpretation of Pikaia reveals the origins of the chordate body plan.
Curr Biol
July 2024
Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK.
Our understanding of the evolutionary origin of Chordata, one of the most disparate and ecologically significant animal phyla, is hindered by a lack of unambiguous stem-group relatives. Problematic Cambrian fossils that have been considered as candidate chordates include vetulicolians,Yunnanozoon, and the iconic Pikaia. However, their phylogenetic placement has remained poorly constrained, impeding reconstructions of character evolution along the chordate stem lineage.
View Article and Find Full Text PDFInverted Ovation iX Limb to Treat an Isolated Common Iliac Artery Aneurysm.
Vasc Specialist Int
January 2024
Division of Vascular Surgery, Centre Hospitalier de l'Université de Montréal, Québec, Canada.
In recent years, endovascular aneurysm repair has become the predominant method of managing abdominal aortic and common iliac artery aneurysms. Off-label use of different endovascular devices has allowed them to remain a viable option in many cases of atypical anatomy. Some studies have reported the use of iliac devices in an upside-down configuration when the common iliac artery aneurysm has a reverse-tapered morphology.
View Article and Find Full Text PDFMicroplastic sources, formation, toxicity and remediation: a review.
Environ Chem Lett
April 2023
Department of Medical Bioscience, University of the Western Cape, Bellville, Cape Town, 7530 South Africa.
Microplastic pollution is becoming a major issue for human health due to the recent discovery of microplastics in most ecosystems. Here, we review the sources, formation, occurrence, toxicity and remediation methods of microplastics. We distinguish ocean-based and land-based sources of microplastics.
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