6-Year Periodicity and Variable Synchronicity in a Mass-Flowering Plant

Periodical organisms, such as bamboos and periodical cicadas, are very famous for their synchronous reproduction. In bamboos and other periodical plants, the synchronicity of mass-flowering and withering has been often reported indicating these species are monocarpic (semelparous) species. Therefore, synchronicity and periodicity are often suspected to be fairly tightly coupled traits in these periodical plants. We investigate the periodicity and synchronicity of Strobilanthes flexicaulis, and a closely related species S. tashiroi on Okinawa Island, Japan. The genus Strobilanthes is known for several periodical species. Based on 32-year observational data, we confirmed that S. flexicaulis is 6-year periodical mass-flowering monocarpic plant. All the flowering plants had died after flowering. In contrast, we found that S. tashiroi is a polycarpic perennial with no mass-flowering from three-year individual tracking. We also surveyed six local populations of S. flexicaulis and found variation in the synchronicity from four highly synchronized populations (>98% of plants flowering in the mass year) to two less synchronized one with 11–47% of plants flowering before and after the mass year. This result might imply that synchrony may be selected for when periodicity is established in monocarpic species. We found the selective advantages for mass-flowering in pollinator activities and predator satiation. The current results suggest that the periodical S. flexicaulis might have evolved periodicity from a non-periodical close relative. The current report should become a key finding for understanding the evolution of periodical plants

Comparison of health conditions treated with traditional and biomedical health care in a Quechua community in rural Bolivia

<p>Abstract</p> <p>Background</p> <p>The objective of the present study was to reveal patterns in the treatment of health conditions in a Quechua-speaking community in the Bolivian Andes based on plant use data from traditional healers and patient data from a primary health care (PHC) service, and to demonstrate similarities and differences between the type of illnesses treated with traditional and biomedical health care, respectively.</p> <p>Methods</p> <p>A secondary analysis of plant use data from semi-structured interviews with eight healers was conducted and diagnostic data was collected from 324 patients in the community PHC service. Health conditions were ranked according to: (A) the percentage of patients in the PHC service diagnosed with these conditions; and (B) the citation frequency of plant use reports to treat these conditions by healers. Healers were also queried about the payment modalities they offer to their patients.</p> <p>Results</p> <p>Plant use reports from healers yielded 1166 responses about 181 medicinal plant species, which are used to treat 67 different health conditions, ranging from general symptoms (e.g. fever and body pain), to more specific ailments, such as arthritis, biliary colic and pneumonia. The results show that treatment offered by traditional medicine overlaps with biomedical health care in the case of respiratory infections, wounds and bruises, fever and biliary colic/cholecystitis. Furthermore, traditional health care appears to be complementary to biomedical health care for chronic illnesses, especially arthritis, and for folk illnesses that are particularly relevant within the local cultural context. Payment from patients to healers included flexible, outcome contingent and non-monetary options.</p> <p>Conclusion</p> <p>Traditional medicine in the study area is adaptive because it corresponds well with local patterns of morbidity, health care needs in relation to chronic illnesses, cultural perceptions of health conditions and socio-economic aspects of health care. The quantitative analysis of plant use reports and patient data represents a novel approach to compare the contribution of traditional and biomedical health care to treatment of particular health conditions.</p

Remembering the Sea: Personal and Communal Recollections of Maritime Life in Jizan and the Farasan Islands, Saudi Arabia

This is the final version of the article. Available from the publisher via the DOI in this record.People create narratives of their maritime past through the remembering and forgetting of seafaring experiences, and through the retention and disposal of maritime artefacts that function mnemonically to evoke or suppress those experiences. The sustenance and reproduction of the resulting narratives depends further on effective media of intergenerational transmission; otherwise, they are lost. Rapid socio-economic transformation across Saudi Arabia in the age of oil has disrupted longstanding seafaring economies in the Red Sea archipelago of the Farasan Islands, and the nearby mainland port of Jizan. Vestiges of wooden boatbuilding activity are few; long-distance dhow trade with South Asia, the Arabian-Persian Gulf and East Africa has ceased; and a once substantial pearling and nacre (mother of pearl) collection industry has dwindled to a tiny group of hobbyists: no youth dive today. This widespread withdrawal from seafaring activity among many people in these formerly maritime-oriented communities has diminished the salience of such activity in cultural memory, and has set in motion narrative creation processes, through which memories are filtered and selected, and objects preserved, discarded, or lost. This paper is a product of the encounter of the authors with keepers of maritime memories and objects in the Farasan Islands and Jizan. An older generation of men recall memories of their experiences as boat builders, captains, seafarers, pearl divers and fishermen. Their recounted memories are inscribed, and Arabic seafaring terms recorded. The extent of the retention of maritime material cultural items as memorials is also assessed, and the rôle of individual, communal and state actors in that retention is considered. Through this reflection, it becomes clear that the extra-biological memory and archive of the region’s maritime past is sparse; that intergenerational transmission is failing; that the participation of state agencies in maritime heritage creation is highly limited; and that, as a result, memories current among the older generation have limited prospect of survival. These memories, recorded and interpreted here, identify the Farasan Islands as a former centre of the pearling industry in the Red Sea, and identify them and Jizan as open to far-reaching maritime-mediated cultural influences in an era before the imposition of the attributes of the modern nation-state.This study was funded by the Golden Web Foundation (UK registered charity number 1100608), with additional support from the Seven Pillars of Wisdom Trust (UK registered charity number 208669)

Development of multivariable models to predict change in Body Mass Index within a clinical trial population of psychotic individuals

Many antipsychotics promote weight gain, which can lead to non-compliance and relapse of psychosis. By developing models that accurately identify individuals at greater risk of weight gain, clinicians can make informed treatment decisions and target intervention measures. We examined clinical, genetic and expression data for 284 individuals with psychosis derived from a previously published randomised controlled trial (IMPACT). These data were used to develop regression and classification models predicting change in Body Mass Index (BMI) over one year. Clinical predictors included demographics, anthropometrics, cardiac and blood measures, diet and exercise, physical and mental health, medication and BMI outcome measures. We included genetic polygenic risk scores (PRS) for schizophrenia, bipolar disorder, BMI, waist-hip-ratio, insulin resistance and height, as well as gene co-expression modules generated by Weighted Gene Co-expression Network Analysis (WGCNA). The best performing predictive models for BMI and BMI gain after one year used clinical data only, which suggests expression and genetic data do not improve prediction in this cohort

A new species of Strobilanthes (Acanthaceae) from Western Thailand

A new species from Kaeng Krachan National Park in Thailand, Strobilanthes phyllocephala J. R. I.Wood &amp; R.W. Scotland, is described and illustrated. The role of important collectors like J. F. Maxwell and Kai Larsen in finding Strobilanthes species is highlighted and attention is drawn to the importance of good field observation to enable understanding of the unusual plietesial flowering pattern characteristic of many species in this genus

Notes on Ipomoea (Convolvulaceae) from the Amazonian periphery

Attention is drawn to the relatively low number of Ipomoea species found in the Amazon basin as well as to the rarity of most species restricted to the region. Six new species from the Amazonian periphery are described: Ipomoea acrensis J. R. I. Wood &amp; Scotland and I. altoamazonica J. R. I. Wood &amp; Scotland from Brazil and Peru, I. maranyonensis J. R. I. Wood &amp; Scotland from Peru, I. macarenaensis J. R. I. Wood &amp; Scotland from Colombia, I. pogonocalyx J. R. I. Wood &amp; Scotland from Brazil and I. deminuta J. R. I. Wood &amp; Scotland from Bolivia. Variation in I. megapotamica is discussed and two subspecies are recognised, subsp. megapotamica from southern South America and subsp. velutina J. R. I. Wood &amp; Scotland from northern Brazil and Venezuela. Plants treated as I. chenopodiifolia M. Martens &amp; Galeotti from Venezuela are recognised as I. retropilosa (Pittier) D. F. Austin. Two subspecies of this species are proposed, subsp. retropilosa being endemic to the Venezuelan Andes whereas the newly described subsp. cundinamarcana J. R. I. Wood &amp; Scotland is restricted to Colombia. I. austinii Infante-Bet. is treated as a synonym of the African I. involucrata P. Beauv., one of a number of Old World species now established in the neotropics

Some notes on the Strobilanthes pentstemonoides (Acanthaceae) complex in China, India and South East Asia

The characteristics of the group of species resembling Strobilanthes pentstemonoides (Nees) T. Anderson are discussed. The four species of this complex occurring in the Malesian region are defined and contrasted. S. pluriformis C. B. Clarke is lectotypified and S. murutorum J. R. I. Wood from Sarawak is described as new. A hitherto confused species from north east India is described as new under the name S. paniculiformis J. R. I. Wood. The common species of this complex in China, Vietnam and Thailand, hitherto treated under numerous different names is recognised as a single species, S. dimorphotrica Hance, with two subspecies. Subspecies dimorphotrica extends from eastern India through south China to Hainan and Taiwan islands while subspecies rex (C. B. Clarke) J. R. I. Wood is centred on Thailand but extends into four neighbouring countries. The new species are illustrated. © The Board of Trustees of the Royal Botanic Gardens, Kew, 2006