Virgin Islands Research Articles

Pathology of lesions in corals from the US Virgin Islands after emergence of stony coral tissue loss disease

Pathology of lesions in corals from the US Virgin Islands after emergence of stony coral tissue loss disease

Small Area Estimation of Subdistrict Diabetes Prevalence in the US Virgin Islands, 2021-2022.

Small Area Estimation of Subdistrict Diabetes Prevalence in the US Virgin Islands, 2021-2022.

Without Bounds: Colonialism and Disaster in St Vincent and the US Virgin Islands

Without Bounds: Colonialism and Disaster in St Vincent and the US Virgin Islands

Career Advancement Insights from Certified Pharmacy Technicians: Enhanced Opportunities for the Pharmacy Technician Workforce

Sustainable career advancement opportunities for pharmacy technicians will be a critical part of patient-centered community pharmacy environments as the role of the pharmacist provider expands. (1) To determine the impact of a Pharmacy Technician Certification Board pharmacy (PTCB) certification on career advancement and professional growth metrics; (2) To assess technicians' role in advanced pharmacy services before and after certification; and (3) To identify changes in pharmacist services when a certified pharmacy technician (CPhT) was added to the provider team. A 73-question web-based survey was distributed to all PTCB certified pharmacy technicians (CPhT) in the United States, Washing D.C., Puerto Rico, Guam, and the US Virgin Islands. The survey was distributed by PTCB in April 2021 with a 28-day collection period. The survey included multiple choice, rating scale, and free text questions centered on five domains: Practice experience, Career aspirations, Compensation, Pharmacy practice motivations, and Impact of COVID-19 pandemic. 23,007 CPhTs completed the survey. Respondents were primarily female (85.5%), age 30-39 (32.8%), and ≥ 10 years CPhT experience (42.8%). The majority of respondents cited improvement of patient health (77.4%), career advancement opportunities (53.5%), the ability to expand their role during emergencies (e.g., COVID-19) (52.6%), and future career advancement opportunities (51.7%) as benefits of CPhT certification. Increases in job responsibility after certification included changes occurring in roles related to clinical pharmacy services, patient education, preventive health services, provider communication, and staff training. Respondents agreed that PTCB-certification allowed for the expansion of pharmacists' services where they practiced, including clinical services (18.5%), patient education (18.3%), and preventive health services (18.1%). CPhT's value certification for its benefits on career advancement, personal growth, and salary enhancement. Affirmation of skill and training through certification is also recognized to positively influence patient care and the pharmacy's ability to provide advanced patient care and services.

The state of knowledge of freshwater resources in the U.S. Virgin Islands: Data scarcity and implications

AbstractLike many small island communities, the U.S. Virgin Islands (USVI), an unincorporated territory of the U.S., is naturally freshwater scarce. In recent decades, rapid land development in the USVI has increased water demand considerably, exerting extra pressure on freshwater resources. Freshwater quantity and quality data for the USVI are very scarce and scattered, which limits freshwater management capabilities. We draw attention to this information deficit and discuss its implications by reviewing the current state of knowledge of surface and groundwater quantity and quality for the USVI. Our review confirms that long‐term records of surface and groundwater quantity and quality are limited and unreliable. For example, streamflow was most recently monitored in 2006, and the most extensive surface water quality records are from the 1960s and 1980s. Since 2016, mean groundwater levels have been recorded daily, but only for three wells (one on each island of the USVI). Importantly, this lack of information threatens water security for the territory and limits our understanding of how development has impacted water quality and availability over time. This could be addressed using models, such as a groundwater recharge model, in combination with remote sensing and updated field data (i.e., streamflow, groundwater, and ecohydrological characterizations of land use change).

Prevalence of COVID-19 and Long COVID by industry and occupation: Behavioral Risk Factor Surveillance System 2022.

Workers in healthcare and other essential occupations had elevated risks for COVID-19 infection early in the pandemic. No survey of U.S. workers to date has comprehensively assessed the prevalence of both COVID-19 and Long COVID across industries and occupations (I&O) at a detailed level. Behavioral Risk Factor Surveillance System data for 2022 from 39 states, Guam, and the U.S. Virgin Islands were used to estimate prevalence of self-reported history of COVID-19 and Long COVID, as well as the prevalence of Long COVID among those reporting prior COVID-19, by broad and detailed I&O. Adjusted prevalence ratios were used to compare outcome prevalence in each I&O to prevalence among all other workers combined. By broad I&O, workers in healthcare, protective services, and education had elevated prevalences of COVID-19. The prevalence of Long COVID was elevated in healthcare and protective service but not education workers. Detailed I&O with significantly elevated prevalences of COVID-19 but not Long COVID included Dairy Product Manufacturing industry workers and subsets of mining workers. Both COVID-19 and Long COVID were elevated among bartenders/drinking places and personal care and appearance workers. The prevalence of Long COVID was elevated among farmworkers who reported having had COVID-19. Industries and occupations with elevated levels of COVID-19 or Long COVID in this study may warrant increased measures to prevent transmission of airborne respiratory viruses. Accommodations are a key component for supporting workers in all workplaces. This new information about the distribution of Long COVID by I&O suggests where employer understanding and implementation of tailored workplace supports and accommodations are most needed to support continued employment of affected workers.

Discovery of a potent, Kv7.3-selective potassium channel opener from a Polynesian traditional botanical anticonvulsant

Plants remain an important source of biologically active small molecules with high therapeutic potential. The voltage-gated potassium (Kv) channel formed by Kv7.2/3 (KCNQ2/3) heteromers is a major target for anticonvulsant drug development. Here, we screened 1444 extracts primarily from plants collected in California and the US Virgin Islands, for their ability to activate Kv7.2/3 but not inhibit Kv1.3, to select against tannic acid being the active component. We validated the 7 strongest hits, identified Thespesia populnea (miro, milo, portia tree) as the most promising, then discovered its primary active metabolite to be gentisic acid (GA). GA highly potently activated Kv7.2/3 (EC50, 2.8 nM). GA is, uniquely to our knowledge, 100% selective for Kv7.3 versus other Kv7 homomers; it requires S5 residue Kv7.3-W265 for Kv7.2/3 activation, and it ameliorates pentylenetetrazole-induced seizures in mice. Structure-activity studies revealed that the FDA-approved vasoprotective drug calcium dobesilate, a GA analog, is a previously unrecognized Kv7.2/3 channel opener. Also an active aspirin metabolite, GA provides a molecular rationale for the use of T. populnea as an anticonvulsant in Polynesian indigenous medicine and presents novel pharmacological prospects for potent, isoform-selective, therapeutic Kv7 channel activation.

Geologic Input Databases for the 2025 Puerto Rico—U.S. Virgin Islands National Seismic Hazard Model Update: Crustal Faults Component

Abstract The last National Seismic Hazard Model (NSHM) for Puerto Rico and the U.S. Virgin Islands (PRVI) was published in 2003. In advance of the 2025 PRVI NSHM update, we created three geologic input databases to summarize new onshore and offshore fault source information in the northern Caribbean region between 62°–70° W and 16°–21° N. These databases, of fault sections, fault-zone polygons, and geologic estimates of fault activity (fault-slip rate and earthquake recurrence intervals) at specific sites, document updates to fault parameters used in prior seismic hazard models in PRVI. Fault sources were reviewed from published studies since 2003, which document substantial changes to the understanding of fault location, geometry, or activity. New fault section sources were added for features that meet the criteria of (1) length ≥7 km, (2) unequivocal evidence of recurrent tectonic Quaternary activity, and (3) documentation that is publicly available in a peer-reviewed source. In addition, we revised several broad areal sources, such as the Mona and Anegada extensional zones. The 2003 model included three fault sections and two fault-zone polygons (areal sources). These databases include 35 fault sections, 6 fault-zone polygons, and 51 earthquake geology sites. To characterize fault activity rates, slip-rate bins were assigned based on landscape expression and paleoseismic trench observations for faults without published slip-rate sites. Additional fault sources were evaluated but not included in these databases due to a lack of published information about fault location, geometry, or recurrent Quaternary activity. The PRVI NSHM 2025 geologic input databases describe crustal faulting; the geometries and coupling of Puerto Rico subduction zone and Muertos Trough models are considered in a separate database. Updates to the fault sections, fault-zone polygons, and earthquake geology databases can help inform the location and recurrence rate of damaging earthquakes in the PRVI NSHM implementation.

Trends in Temperatures in Latin America: A Time-Series Perspective Based on Fractional Integration

Abstract In this article, we examine the time-series properties of the temperatures in Latin America. We look at the presence of time trends in the context of potential long-memory processes, looking at the average, maximum, and minimum values from 1901 to 2021. Our results indicate that when looking at the average data, there is a tendency to return to the mean value in all cases. However, it is noted that in the cases of Guatemala, Mexico, and Brazil, which are the countries with the highest degree of integration, the process of reversion could take longer than in the remaining countries. We also point out that the time trend coefficient is significantly positive in practically all cases, especially in temperatures in the Caribbean islands such as Antigua and Barbuda, Aruba, and the British Virgin Islands. When analyzing the maximum and minimum temperatures, the highest degrees of integration are observed in the minimum values, and the highest values are obtained again in Brazil, Guatemala, and Mexico. The time trend coefficients are significantly positive in almost all cases, with the only two exceptions being Bolivia and Paraguay. Looking at the range (i.e., the difference between maximum and minimum temperatures), evidence of orders of integration above 0.5 is found in nine countries (Aruba, Brazil, Colombia, Cuba, Ecuador, Haiti, Panama, the Turks and Caicos Islands, and Venezuela), implying that shocks in the range will take longer to disappear than in the rest of the countries.

Movements, foraging and habitat selection of southern stingrays (Hypanus americanus) in a tropical ecosystem altered by an invasive seagrass

This study provides some of the first evidence of how a common Caribbean fish species that relies on seagrass and sand habitats interacts with an invasive seagrass. The invasive seagrass Halophila stipulacea, first documented in the Caribbean in 2002, has rapidly expanded its range, displacing native seagrasses, and overgrowing bare sand. The southern stingray (Hypanus americanus) uses shallow seagrass and sand habitats for foraging. This paper examined the impacts of the invasive seagrass, H. stipulacea, on southern stingray behavior, foraging and movement patterns using acoustic telemetry and visual observations. From 2015 to 2018, 15 southern stingrays (14 juveniles of unknown sex and 1 female) were tagged with acoustic transmitters and passively monitored within an acoustic array in Brewers and Perseverance Bays, St. Thomas, United States Virgin Islands. The residence time, rates of movement and activity spaces for 50% and 95% utilization distributions (UD) were calculated for day and night periods. Tagged southern stingrays were detected within the array on average for 260 d (range 11–801 d) and residency for all individuals averaged 53% over the monitoring period (1079 d). Mean rates of movement per individual ranged from 40 to 150 m h−1, was lowest during the nighttime and were significantly higher during crepuscular periods. Activity spaces during day and night periods were nearly identical and averaged 0.05 km2 and 0.25 km2 for 50% and 95% UD, respectively. Distances between day and night 50% UD activity spaces was 148 m (range 8–409 m) and mean percent overlap was 38%. In addition to acoustic monitoring, benthic cover of available habitats and visual surveys of stingray behavior and habitat preferences were conducted along fixed transects. Monotypic stands of the invasive H. stipulacea seagrass represented 42% of benthic cover, followed by bare sand (27%), mixed patches of native and invasive seagrasses (23%) and the native Syringodium filiforme (7%). A habitat selection index (HSI) comparing the percent cover of available habitats and habitats occupied by stingrays found a strong preference for the native seagrass S. filiforme (HSI = 2.30) and bare sand (HSI = 1.79) compared to H. stipulacea (HSI = 0.70). Visual surveys also revealed that 50% of foraging stingrays were in S. filiforme, while 28% and 17% were foraging in H. stipulacea and bare sand, respectively. Our results are an important baseline for examining how further expansion of H. stipulacea may affect southern stingray movement patterns and foraging preferences.

Hurricanes make headlines, but chronic utility failure drives energy (in)security in the U.S. Virgin Islands

Natural disasters and extreme events expose significant challenges to electricity infrastructure. We explore concepts of energy security and energy resilience in the aftermath of Hurricanes Maria & Irma in the U.S. Caribbean in 2017. We look at household consequences of regular and storm related power outages for communities, and investigate the motivations for household adoption of solar energy in the wake of a natural disaster, using surveys and interviews in the U.S. Virgin Islands. Results indicate that the storm-related utility failure was widely acknowledged as catastrophic by Islanders, severely limiting the ability for people to work, purchase and store food, and live healthy and productive lives – with lasting consequences. We also find that residents are just as impacted by chronic utility failure as they were disaster-related outages. In the wake of perceived failure from the local utility to provide energy security or energy resilience, households are making decision to invest in self-provided systems to meet these needs by purchasing generators and solar PV. Yet, provision of solar PV follows systemic and racialized patterns of access. We suggest that the practical ways in which utilities make decisions about resilience are outdated, and call for a new paradigm of energy security.

Phylogeography of Coccoloba uvifera (Polygonaceae) Sampled across the Caribbean Basin

Coccoloba uvifera L. (seagrape) is a primarily dioecious neotropical tree species which often grows in the beach–forest transitional ecotone of coastal strand vegetation. We used five maternally inherited non-coding chloroplast regions to characterize the phytogeography of C. uvifera collected across the Caribbean Basin and Florida. Bayesian analysis revealed divergence between the Aruba–Trinidad–Tobago–Antigua–Jamaica island group and the continental Belize–Florida–US Virgin Islands (USVI) group at 1.78 million years before present (mybp), divergence between the Belize and Florida–USVI groups at 1.08 mybp, and a split of Antigua–Jamaica from Aruba–Trinidad–Tobago at 0.217 mybp. Haplotype network analysis supports the three clades, with the island group possessing the oldest haplotype. Based on geology and proximity, these clades correspond to South American (oldest), Central American, and North American (most recent). Coccoloba uvifera demographic expansion occurred during the Pleistocene epoch and peaked near the end of the last glacial maximum (ca. 0.026–0.019 mybp) when the global sea levels were 125 m lower than today. Our findings also reveal that tropical cyclones, which often impact coastal strand vegetation, did not affect genetic diversity. However, there was a positive association between latitude and the average number of substitutions, further enriching our understanding of the species’ phytogeography.

Exploring boaters’ intentions and awareness to explain why some anchor on coral reefs

Coral reefs provide a variety of ecosystem services to humans, but are also degrading due to human activities such as damage from boat anchoring. Anchoring on reef could occur intentionally, because boaters prioritize other considerations that outweigh any desire to not anchor on reef, or unintentionally, because they lack true awareness of the seabed habitat. We conducted structured interviews, informed by the Theory of Planned Behavior, with 130 boaters in the British Virgin Islands to uncover the motivations and awareness underlying their anchoring behavior. Perceived awareness is rarely ground-truthed, so we checked interview responses of anchored boats by snorkeling to observe the seabed underlying their anchor and anchor chain. All respondents stated a strong aversion to anchoring on coral reef. The few boats we observed anchored on reef did so unintentionally due to a mismatch between their perceived and actual awareness of the seabed habitat. Potential management actions to reduce anchoring on reef thus include measures that increase awareness of seabed habitats. Mooring buoys are an alternative to anchoring at some sites, so increased use of moorings is another option because it should decrease the proportion of boats that anchor, which, in turn, should reduce unintentional anchoring on coral. The decision to use a mooring rather than anchor is, however, multifaceted. Boaters are less likely to choose moorings if they perceive moorings as inconvenient to pre-book, do not trust the moorings are secure, or prefer more secluded areas. Boaters also noted that, during peak boating season, the option to moor is reduced because moorings are sometimes fully occupied. Despite this complexity, our findings suggest several local management options that could further reduce the minority of boats anchoring on coral.

Increasing Effective Primary Care Screenings in the U.S. Virgin Islands Department of Health Community Clinic.

Background: In 2019, 1.8 million new cancer cases occurred, and 500,000 cancer deaths were expected in the United States, costing $21 billion. Regular primary care screenings have correlated with early cancer detection, treatment, health promotion, and reduced costs. Objectives: The aim was to increase effective primary care screenings in adults in St. Thomas U.S. Virgin Islands Department of Health Community Clinic to 75% within 8 weeks. Methods: This quality improvement initiative used four Plan-Do-Study-Act cycles over 8 weeks. Two core interventions, each with four tests of change, were implemented. Interventions: Core interventions included screening utilizing a checklist for body mass index, depression, and colorectal, lung, breast, cervical, uterine, and prostate cancer and engagement utilizing a checklist for correlated screening-related education, interventions, shared decision-making, and referral. Results: Primary care screenings increased from 55% to 96%, and patient engagement increased from 6% to 82%. Effective primary care screenings increased to 89%, exceeding the aim. Conclusions: This project improved primary care screening and engagement and effectively applied patient-centered care. Achievements were made through standardized screening and engagement. Implications for Nursing: This quality improvement project may be spread to other clinics to improve patient health outcomes.

Polymodal K+ channel modulation contributes to dual analgesic and anti-inflammatory actions of traditional botanical medicines

Pain and inflammation contribute immeasurably to reduced quality of life, yet modern analgesic and anti-inflammatory therapeutics can cause dependence and side effects. Here, we screened 1444 plant extracts, prepared primarily from native species in California and the United States Virgin Islands, against two voltage-gated K+ channels - T-cell expressed Kv1.3 and nociceptive-neuron expressed Kv7.2/7.3. A subset of extracts both inhibits Kv1.3 and activates Kv7.2/7.3 at hyperpolarized potentials, effects predicted to be anti-inflammatory and analgesic, respectively. Among the top dual hits are witch hazel and fireweed; polymodal modulation of multiple K+ channel types by hydrolysable tannins contributes to their dual anti-inflammatory, analgesic actions. In silico docking and mutagenesis data suggest pore-proximal extracellular linker sequence divergence underlies opposite effects of hydrolysable tannins on different Kv1 isoforms. The findings provide molecular insights into the enduring, widespread medicinal use of witch hazel and fireweed and demonstrate a screening strategy for discovering dual anti-inflammatory, analgesic small molecules.

Exercises in ethically engaged work in biological anthropology.

An ethical paradigm shift currently taking place within biological anthropology is pushing scholars to envisage and develop paths toward more ethical futures. Drawing from case studies in our own teaching, research, and fieldwork experience, we reflect on the complex, diverse, and dynamic nature of ethical considerations in our field. We discuss the acquisition and institutional narrative of a human osteological teaching collection at the University of Louisville as an embodiment of structural apathy turned structural violence, and the need for professional guidance in the potential retirement of deceased individuals from our classrooms. In documented collections (i.e., the Robert J. Terry Collection), we share our process and scholarly reemphasis of the humanity of a deceased individual through contextualized analysis (i.e., osteobiography and archival history) and postmortem agentive acts. Lastly, we present an archeological site in the U.S. Virgin Islands, which poses ethical concerns as biocultural bioarcheologists and archeologists attempt to negotiate the possible wishes of the deceased with the cultural value of reconstructing the community's otherwise undocumented past, all amidst the immediate threat of anthropogenic climate change. We offer these exercises and discussion in ethically engaged projects transparently and with an overarching admission that none are models for replication. Rather, at various stages in our careers and engagement with ethics, we acknowledge that progress is worthwhile, albeit challenging, and that proceeding forward collectively as biological anthropologists should be deliberate, reflexive, and compassionate for deceased individuals and their descendant communities, as well as among and between colleagues.

The cicada (Hemiptera: Cicadidae) fauna of the Lesser Antilles sensu lato with the description of two new species, two new combinations, and a key to species

A summary and the known distributions of the cicadas of the Lesser Antilles sensu lato are provided. Fidicina guadeloupensis n. sp. from Guadeloupe and Herrera castaneanigricula n. sp. from Martinique are described as new. Carineta acclivis Sanborn, 2017b and Carineta martiniquensis Davis, 1934 are reassigned to become Herrera acclivis (Sanborn, 2017b) n. comb. and Herrera martiniquensis (Davis, 1934) n. comb. A total of 23 species, 13 genera, four tribes and two subfamilies are known to inhabit the various island chains with seven species being endemic to a single island. The majority (15 species) is found in the Republic of Trinidad & Tobago. More than half of the genera (eight) and species (12) represented in the Lesser Antilles are members of the Fidicinini Distant, 1905a. Herrera Distant, 1905b is the most diverse genus with five species recorded from the region, Proarna Stål, 1864 is also well represented with four species. Proarna hilaris (Germar, 1834) is the species with the greatest range expanding from the Virgin Islands to Trinidad in the Lesser Antilles. Finally, a key to the known cicada species of the Lesser Antilles is provided.

A systems thinking framework for understanding rising childhood obesity in the Caribbean

ObjectiveThe aim of this study is to develop a systems thinking framework to describe the common complexities of childhood obesity in the Caribbean region and identify potential areas of intervention.MethodsGroup model building (GMB) is a form of systems science. Trained GMB facilitators in Puerto Rico, the US Virgin Islands, Barbados, and Trinidad and Tobago convened a group of multi-disciplinary stakeholders in a series of virtual meetings in 2021 to elaborate a hypothesis of the system driving childhood obesity represented by causal loop diagrams (CLD). Commonalities and differences between the CLDs from each island were identified and reconciled to create a synthesized CLD.ResultsA single explanatory CLD across the islands was developed and includes nine reinforcing loops. These loops addressed the interconnected role of schools, policy, commercial determinants, community and the personal experience of the child in rising childhood obesity rates.ConclusionsDespite differences across settings, there is a core system driving childhood obesity in the Caribbean, as described by stakeholders in GMB workshops. Policy solutions to the problem must be multi-faceted and multi-level to address the interlinked reinforcing loops of the complex system and reduce rates of childhood obesity.

Why keep monitoring coral reefs?

Abstract The high demand for information on how coral reefs are changing often exceeds the capacity of the scientific community to deliver the data necessary to meet this need. However, given the degraded state of coral reefs and the poor prognosis for their recovery, it is reasonable to ask whether coral reef monitoring should continue. Using my experiences from a 37-year study in the US Virgin Islands, I highlight the information that monitoring conveys on the changing state of coral reefs, and underscore how the interpretation of ecological trends matures with increasing longevity of records. Because the past is an imperfect predictor of the future, monitoring coral reefs remains an important endeavor. It offers the only opportunity to understand how reefs will continue to change, to connect patterns of change to the processes causing them to occur, and to create opportunities for management to best ensure their future.

Extreme Heat in the Caribbean: Impacts on Wellbeing and Buildings Energy Infrastructure—The 2023 Summer Case

Abstract The summer of 2023 in Puerto Rico and US Virgin Islands witnessed an unprecedented surge in extreme heat, surpassing historical norms prompting the analysis of the broader implications for the Caribbean region. This study presents the initial analysis of this remarkable heatwave, the broader context of global climate change, and its potential impacts on people's well-being and energy demand. Historical and 2023 summer daily maximum heat index (HI) are calculated using local stations and regional gridded data. The results show that summer 2023 exhibited a significant departure from the historical climate. For about 70% of summer days, HI values above 100 °F were recorded. It was found that the extreme summer is part of a broader regional pattern. The summer of 2023 recorded higher sea surface temperatures with anomalies above 2.07 °C and the weakening of the Azores High resulting in reduced wind speed in the region. This diminished the cooling effect associated with cooler maritime air aiding the stagnation of air masses over the region. The analysis sets a threshold of HI of 103 °F to assess human exposure. A significant portion of the region's population, especially in urban areas, was exposed to HI above this threshold. Concurrently, the intense heat led to increased energy demands, with about a 25% increase in peak energy demand in buildings. Per capita consumption exceeded 200 kWh/month for cooling and human comfort and anomalies adding around 15 kWh/month. The study is a step forward in developing adaptive strategies to safeguard vulnerable communities due to global warming-induced extreme events.