Lion fecal DNA extracts from four individuals each from Yankari Game Reserve and Kainji-Lake National Park (central northeast and west Nigeria, respectively) were Sanger-sequenced for the mitochondrial cytochrome b gene. The sequences were aligned against 61 lion reference sequences from other parts of Africa and India. The sequence data were analyzed further for the construction of phylogenetic trees using the maximum-likelihood approach to depict phylogenetic patterns of distribution among sequences. Our results show that Nigerian lions grouped together with lions from West and Central Africa. At the smaller geographical scale, lions from Kainji-Lake National Park in western Nigeria grouped with lions from Benin (located west of Nigeria), whereas lions from Yankari Game Reserve in central northeastern Nigeria grouped with the lion populations in Cameroon (located east of Nigeria). The finding that the two remaining lion populations in Nigeria have different phylogenetic origins is an important aspect to consider in future decisions regarding management and conservation of rapidly shrinking lion populations in West Africa.
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http://dx.doi.org/10.1002/ece3.1116 | DOI Listing |
Ecol Lett
January 2025
School of Natural Resources, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
Theory suggests that animals make hierarchical, multiscale resource selection decisions to address the hierarchy of factors limiting their fitness. Ecologists have developed tools to link population-level resource selection across scales; yet, theoretical expectations about the relationship between coarse- and fine-scale selection decisions at the individual level remain elusive despite their importance to fitness. With GPS-telemetry data collected across California, USA, we evaluated resource selection of mountain lions (Puma concolor; n = 244) relative to spatial variation in human-caused mortality risk.
View Article and Find Full Text PDFClin Ophthalmol
December 2024
Hoopes Vision Research Center, Hoopes Vision, Draper, UT, USA.
Anorexia nervosa (AN) is a psychiatric eating disorder characterized by body mass index (BMI) ≤ 18.5, fear of gaining weight, and a distorted perception of body weight. With increasing rates of myopia, there is a population of patients who concurrently develop AN and may seek corneal refractive surgery.
View Article and Find Full Text PDFOphthalmic Epidemiol
December 2024
School of Population and Global Health, The University of Western Australia, Perth, Australia.
Purpose: Visual field loss poses a high personal cost to those affected, significantly impacting activities of daily living, including driving. However, there is conflicting evidence on the association between visual field loss and crash risk. This study examined the association between severity and location of binocular visual field loss and motor vehicle crashes in older adults aged 50+, using linked population data over a 29-year study period.
View Article and Find Full Text PDFCancers (Basel)
November 2024
Oncology Department, E.O. Ospedali Galliera, 16128 Genoa, Italy.
Background/objectives: Our previous study of 291 cancer patients, we showed that 20% did not respond to two doses of COVID-19 vaccine administered six weeks apart.
Methods: Here, we investigated if psychological factors (distress, anxiety, and depressive symptoms) affected antibody response and markers of vaccine activation (D-dimer) after 6 months from initial vaccination.
Results: Overall, 31 subjects (14.
RSC Chem Biol
December 2024
Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle Lille France
Herein, we report the synthesis, photophysical characterization and validation of iridium(iii)-polypyridine complexes functionalized for click chemistry and bioorthogonal chemistry, as well as their versatile applications as probes in bioimaging studies exploiting metabolic labeling. The designed dyes are conjugated to chemical reporters in a specific manner within cells by CuAAC ligation and display attractive photophysical properties in the UV-visible range. They are indeed highly photostable and emit in the far-red to near-IR region with long lifetimes and large Stokes shifts.
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