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This paper reports the genome sequences of five bacteriophages that were isolated using Streptomyces scabiei. Phages Fabian, FlowerPower, Geostin, RetrieverFever, and Vorvolakos were assigned to actinobacteriophage cluster BF based on shared gene content, with each phage containing between 16 and 21 tRNA genes.

Mantis shrimp commonly inhabit seafloor environments with an abundance of visual features including conspecifics, predators, prey and landmarks used for navigation. Although these animals are capable of discriminating color and polarization, it is unknown what specific attributes of a visual object are important during recognition. Here, we show that mantis shrimp of the species Neogonodactylus oerstedii are able to learn the shape of a trained target. Further, when the shape and color of a target that they had been trained to identify were placed in conflict, N. oerstedii tended to choose the target of the trained shape over the target of the trained color. Thus, we conclude that the shape of the target was more salient than its color during recognition by N. oerstedii, suggesting that the shapes of objects, such as landmarks or other animals, are important for their identification by the species., Competing Interests: Competing interests The authors declare no competing or financial interests., (© 2021. Published by The Company of Biologists Ltd.)

Objective: The aim of this study was to determine the use of procedural sedation for head trauma-related computed tomography of the brain (CTB) in children and its association with age and Glasgow Coma Scale (GCS) scores., Patients and Methods: A retrospective review was carried out of charts of children undergoing a CTB for head injury at a tertiary paediatric emergency department with an annual census of 82 000 over a 2-year period. Patients were identified through the database of an ongoing prospective study involving children with head injuries of all severity. We extracted demographics, GCS scores, characteristics of sedation used for CTBs and adverse events., Results: In total, 477 patients underwent CTB after head injury. Thirty-three were intubated for medical management of severe head injury and two received midazolam for seizure management. Of the remaining 442, 67.4% were male and their mean age was 8.3 years. 30.8% had abnormal CTBs and 2.0% required neurosurgery. Twenty-eight [6.3%, 95% confidence interval (CI) 4.2-9.0] were sedated for CTB including 10 who initially failed CTB without sedation. Two patients were intubated for CTB. The sedation rate was 18.4% in patients less than 5 years versus 1.0% in children of age 5 years or more [odds ratio (OR) 22.8, 95% CI 6.7-119.1, P<0.001]. The sedation rate was 3.7% in patients with initial GCS 12 or less versus 10.2% in children with GCS more than 12 (OR 0.34, 95% CI 0.1-2.2, P=0.27)., Conclusion: Children with head injuries who require CTB are infrequently sedated. Younger children are more likely to receive sedation. These data will be useful for the assessment of CTB-associated risks.