Muirkern2032

Animals often disperse from one habitat to another to access mates or suitable breeding sites. The costs and benefits of such movements depend, in part, on the dispersing individuals' phenotypes, including their sex and age. Here we investigated dispersal and road-related mortality in larvae of a bioluminescent beetle, the European common glow-worm,

, in relation to habitat, sex and proximity of pupation. We expected these variables to be relevant to larval dispersal because adult females are wingless, whereas adult males fly when searching for glowing females. We found that dispersing glow-worm larvae were almost exclusively females and close to pupation. The larvae were often found on a road, where they were able to move at relatively high speeds, with a tendency to uphill orientation. However, each passing vehicle caused a high mortality risk, and we found large numbers of larvae run over by cars, especially close to covered, forest-like habitat patches. In contrast, adult females in the same area werehen run over by cars. Hence, roads are likely to be ecological traps for the female glow-worm larvae, attracting them during dispersal, but causing grave mortality. The sex-biased larval dispersal, demonstrated in this study, is a poorly known ecological strategy that was found to be very risky in a human-modified landscape.

The online version contains supplementary material available at 10.1007/s00265-020-02962-6.

The online version contains supplementary material available at 10.1007/s00265-020-02962-6.The term "sideswipe injury" has become synonymous and used interchangeably with the term "traffic elbow." However, with the continuous rise in the use of the tricycle as a means of public transportation in some developing countries, a rise in sideswipe injuries of various severities is being experienced. We report a case of sideswipe injury to the left knee region of a 45-year-old female who was a passenger in the backseat of a tricycle. She sustained a severe injury to the soft tissues and bones around the knee and the popliteal region, with disruption of the neurovascular bundles in the popliteal fossa necessitating an above-knee amputation.We report the case of an 11-year-old boy with proximal myopathy, heliotrope, and Gottron papule-like rashes. Serum chemistry revealed muscle enzyme elevations, whereas muscle biopsy histology showed necrosis and inflammation, which were in keeping with juvenile dermatomyositis. Plain radiographic examination of the thigh 3 weeks after commencing treatment with prednisolone was normal. The aim of this presentation is to highlight the diagnostic challenges posed by this rare condition in a resource-limited setting and to underscore the need for prompt diagnosis and appropriate management. We hope that this report will assist physicians practicing in similar settings to make a prompt and accurate diagnosis when confronted with the same disease.The emergence of resistant strains of mycobacterium tuberculosis (TB) to antituberculous drugs has compounded the management of the chronic infection. More than 90% of rifampicin (RIF)-resistant isolates are also isoniazid resistant; hence, rifampicin resistance (RR) is a surrogate marker for multidrug resistant TB (MDR-TB). Although there are limited reports of pediatric RR/MDR-TB in Nigeria, there had not been similar report in our hospital until now. A 2-year-old girl was admitted with 2-month history of fever, cough with dyspnea, and progressive weight loss. There was no known contact with adult who had chronic cough; the toddler and her parents have not been treated for TB in the past. selleck chemicals Her chest X-ray showed nodular opacities, while gastric washout for GeneXpert MTB/RIF confirmed RIF-resistant TB. The parents declined screening for TB despite counseling. The patient was subsequently referred to a specialized center for the management of drug-resistant TB, but the parents failed to go for the treatment. Young children are at risk of developing TB disease and MDR/RR-TB, which is more complex to manage than drug-susceptible TB due to longer treatment duration, increased toxicity, as well as poor parental compliance to the demand of treatment.Penetrating arrow injuries of the head-and-neck region are rare in the developed countries, but they are common in the rural communities of our country. Arrow shot to the head-and-neck region can be life-threatening due to the presence of major vessels and vital organs. Management of arrow injury to the head-and-neck region is seriously challenging, extraction of the arrows are usually difficult due to the proximity to vital structures, unskilled removal may worsen the existing injury or result in inadvertent damage to the vital structures. We presented the four cases of arrow shot to the head-and-neck region, three were managed successfully, and one was brought in dead probably due to attempt at the removal at home or poisonous nature of the arrow. Therefore, the aim of this report is to highlight our experience and challenges in the management of penetrating arrow injuries to head-and-neck region and to review some literature reports.Parathyroid adenoma is the most common cause of primary hyperthyroidism which leads to abnormal calcium homeostasis, hypercalcemia, and reduction in bone density. A 37-year-old female referred from a private health facility with a 1-year history of upper back swelling and pain. The pain was worse when sitting down for long periods and with movement and relieved by rest. There was no antecedent history of trauma, but the patient had noticed poor appetite and weight loss. There were no constipation, no abdominal discomfort, and no symptom suggestive of hyperthyroidism or hypothyroidism. General physical examination revealed kyphoscoliosis, and vital signs were within normal limits. Spine X-ray showed features of cervical spondylosis. Computed tomography (CT) scan and magnetic resonance imaging showed pathologic fractures of the right 9 thrib, anterior wedge compression, and reduction of T4 vertebrae with other abnormalities at T4-T5, T5-T6, T7-T8, T10-T11, and L4-L5 vertebrae. Bone marrow aspiration and serum electrophoresis were within normal limits.