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Phylogenetics of the Old World screwworm fly and its significance for planning control and monitoring invasions in Asia

Wardhana AH, Hall MJ, Mahamdallie SS, Muharsini S, Cameron MM, Ready PD

Int J Parasitol, 2012 Jul;42(8):729-38.
PMID: 22664061 DOI: 10.1016/j.ijpara.2012.04.017

Phylogenetic, genealogical and population relationships of Chrysomya bezziana, the Old World screwworm fly (OWSF), were inferred from DNA sequences of mitochondrial cytochrome b (cyt b), nuclear elongation factor-1α (EF-1α) and nuclear white eye colour (white), using sequences of Chrysomya megacephala and Chrysomya rufifacies as outgroups. Cyt b (717bp, 754 specimens), EF-1α (361bp, 256 specimens) and white (577bp, 242 specimens) were analysed from up to two African and nine Asian countries, including 10 Indonesian islands. We show that OWSF occurs as distinctive African and Asian lineages based on cyt b and white, and that there is a marked differentiation between Sumatran and Javan populations in Indonesia, supported by the genealogy and analysis of molecular variance of cyt b alone. Four cyt b sub-lineages are recognised in Asia: only 2.1 occurs on the Asian mainland, from Yemen to Peninsular Malaysia; only 2.2, 2.3 and 2.4 occur in central Indonesia; 2.4 predominates on New Guinea; and 2.1 co-occurs with others only on Sumatra in western Indonesia. This phylogeography and the genetic distances between cyt b haplotypes indicate pre-historic, natural dispersal of OWSF eastwards into Indonesia and other Malesian islands, followed by vicariant evolution in New Guinea and central Indonesia. OWSF is absent from Australia, where there is surveillance for importation or natural invasion. Judged by cyt b haplotype markers, there is currently little spread of OWSF across sea barriers, despite frequent shipments of Australian livestock through Indonesian seas to the Middle East Gulf region. These findings will inform plans for integrated pest management, which could be applied progressively, for example starting in East Nusa Tenggara (central Indonesia) where OWSF has regional cyt b markers, and progressing westwards to Java where any invasion from Sumatra is unlikely. Cyt b markers would help identify the source of any re-emergence in treated areas.
Fulltext The Challenges of Partnering to Promote Health through Sport

Donaldson A, Staley K, Cameron M, Dowling S, Randle E, O'Halloran P, et al.

Int J Environ Res Public Health, 2021 07 05;18(13).
PMID: 34281130 DOI: 10.3390/ijerph18137193

Interagency partnerships and collaborations underpin a settings-based approach to health promotion in all settings, including sport. This study used an online concept mapping approach to explore the challenges that Regional Sports Assemblies (RSAs) in Victoria, Australia experienced when working in partnerships to develop and deliver physical activity programs in a community sport context. Participants from nine RSAs brainstormed 46 unique partnership-related challenges that they then sorted into groups based on similarity of meaning and rated for importance and capacity to manage (6-point scale; 0 = least, 5 = most). A six cluster map (number of statements in cluster, mean cluster importance and capacity ratings)-Co-design for regional areas (4, 4.22, 2.51); Financial resources (3, 4.00, 2.32); Localised delivery challenges (4, 3.72, 2.33); Challenges implementing existing State Sporting Association (SSA) products (9, 3.58, 2.23); Working with clubs (8, 3.43, 2.99); and Partnership engagement (18, 3.23, 2.95)-was considered the most appropriate interpretation of the sorted data. The most important challenge was Lack of volunteer time (4.56). Partnerships to implement health promotion initiatives in sports settings involve multiple challenges, particularly for regional sport organisations working in partnership with community sport clubs with limited human and financial resources, to implement programs developed by national or state-based organisations.
Fulltext ASSERT (Acute Sacral inSufficiEncy fractuRe augmenTation): Perceptions in the Assessment and Treatment of Pubic Rami and Sacral Fragility Fractures Amongst Healthcare Professionals in Geriatric Medicine and Surgery-A Qualitative Study

Sahota O, Leighton P, Cameron M, Taylor R, Ong T, Drummond A, et al.

Geriatr Orthop Surg Rehabil, 2021;12:21514593211026794.
PMID: 34290898 DOI: 10.1177/21514593211026794

Background: Pubic rami fragility fractures are common in older people and result in significant morbidity and increased mortality. Co-existing fractures of the sacrum are common, but routinely missed. The aim of the study was to explore the perceptions in the assessment and treatment of pubic rami and sacral fragility fractures amongst healthcare professionals.
Methods: We interviewed 14 participants about their experience in the assessment and treatment of patients presenting with pubic rami fragility fractures. Data was analyzed using an inductive thematic approach.
Results: The majority of patients presenting with a pubic rami fragility fracture were managed by geriatricians. However, many of the geriatricians were not aware that these fractures have a high association with co-existing sacral fragility fractures. Furthermore, they were not aware of the limitations of standard x-ray imaging, nor of the potential benefits of surgical intervention for sacral fragility fractures. Spinal surgeons recommended that early, more specialist imaging in patients with pubic rami fragility fractures failing to mobilize, would change clinical management, if found to have a coexisting sacral fragility fracture, amenable to surgical intervention.
Conclusions: The awareness, assessment and management of sacral fragility fractures in patients presenting with pubic rami fragility fractures is poor amongst healthcare professionals in geriatric medicine. Spinal surgeons in this study advocate early further imaging and surgical intervention in patients confirmed to have a concomitant sacral fragility fracture who are failing to mobilize.

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