Publications by authors named "Paul W Webala"

Accurate knowledge of species distributions is foundational for effective conservation efforts. Bats are a diverse group of mammals, with important roles in ecosystem functioning. However, our understanding of bats and their ecological importance is hindered by poorly defined ranges, mostly as a result of under-recording.

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  • Convergence in evolution can be studied by examining the bat genus Myotis, which exhibits three foraging strategies that have evolved independently.
  • Researchers sequenced 17 bat genomes and analyzed over 16,000 genes to identify positive selections and evolutionary patterns in relation to their foraging strategies across 30 species.
  • Key genomic changes linked to ecological adaptations involve alterations in genes related to sensory perception, fecundity, metabolism, and digestion, indicating that convergent evolution can occur through different genes with similar functions rather than the same specific genes.
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Synanthropic bats live in close proximity to humans and domestic animals, creating opportunities for potential pathogen spillover. We explored environmental correlates of occurrence for a widely distributed synanthropic African bat, a species associated with potential zoonotic virusesand estimated current and future environmental suitability in the Taita Hills region and surrounding plains in Taita-Taveta County in southeast Kenya. To project future environmental suitability, we used four Coupled Model Intercomparison Project Phase 6 general circulation models that capture temperature and precipitation changes for East Africa.

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  • Wind energy is increasing globally to cut greenhouse gas emissions, but it negatively affects bat populations due to turbine-related fatalities and habitat loss.
  • Measures such as placing turbines away from sensitive areas and limiting operations during peak bat activity are essential to minimize these impacts.
  • There is a lack of legal protections for bats against wind energy development in many countries, highlighting the need for governments and financial institutions to enforce environmental standards to balance energy production with wildlife conservation.
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  • The study investigates the interactions between humans and bats in shared domestic spaces, focusing on the risks of exposure to wildlife pathogens, particularly in urbanized areas where bats have adapted to roosting in buildings.
  • Conducted in Taita-Taveta County, Kenya, it involved surveys of 102 residents and revealed that many people coexist with bats year-round, leading to frequent and intense contact, especially through bat excrement and direct handling.
  • The findings highlight the potential for zoonotic pathogen spillover due to these interactions, underlining the need for understanding such settings to develop effective countermeasures against wildlife-related diseases.
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Ecological information on wildlife reservoirs is fundamental for research targeting prevention of zoonotic infectious disease, yet basic information is lacking for many species in global hotspots of disease emergence. We provide the first estimates of synchronicity, magnitude, and timing of seasonal birthing in Mops condylurus, a putative ebolavirus host, and a co-roosting species, Mops pumilus (formerly Chaerephon pumilus). We show that population-level synchronicity of M.

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Sub-Saharan Africa is under-represented in global biodiversity datasets, particularly regarding the impact of land use on species' population abundances. Drawing on recent advances in expert elicitation to ensure data consistency, 200 experts were convened using a modified-Delphi process to estimate 'intactness scores': the remaining proportion of an 'intact' reference population of a species group in a particular land use, on a scale from 0 (no remaining individuals) to 1 (same abundance as the reference) and, in rare cases, to 2 (populations that thrive in human-modified landscapes). The resulting bii4africa dataset contains intactness scores representing terrestrial vertebrates (tetrapods: ±5,400 amphibians, reptiles, birds, mammals) and vascular plants (±45,000 forbs, graminoids, trees, shrubs) in sub-Saharan Africa across the region's major land uses (urban, cropland, rangeland, plantation, protected, etc.

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Bat flies (Diptera: Nycteribiidae and Streblidae) are hematophagous ectoparasites of bats characterized by viviparous pupiparity and generally high host specificity. Nycteribiid bat flies are wingless, morphologically constrained, and are most diverse in the Eastern Hemisphere. Africa hosts approximately 22% of global bat biodiversity and nearly one-third of all African bat species occur in Kenya, one of Africa's most bat-rich countries.

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  • Many wildlife species, such as bats, adapt to urban environments, leading to potential conflicts with humans and the risk of spreading diseases.
  • A study in southeastern Kenya examined 85 buildings used by bats and 172 buildings not used by bats, focusing on how microclimate and building features influenced bat selection.
  • Findings revealed that bats preferred taller cement buildings with more moisture and fewer permanent human residents, and different bat species had varying preferences for building characteristics.
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  • Africa is facing challenges in balancing economic growth with the preservation of natural resources, particularly regarding its lesser-known bat communities in dry ecosystems.
  • This study conducted in semi-arid Kenya examined bat richness and activity at different heights using acoustic sampling and found over 20 bat species, including one of conservation concern.
  • The research revealed that low-flying bats are more tied to habitat variables while high-flying species depend on weather conditions, emphasizing the need for conservation measures to protect bat diversity amid environmental changes.
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African-Malagasy species of the bat genus Miniopterus are notable both for the dramatic increase in the number of newly recognized species over the last 15 years, as well as for the profusion of new taxa from Madagascar and the neighboring Comoros. Since 2007, seven new Malagasy Miniopterus species have been described compared to only two new species since 1936 from the Afrotropics. The conservative morphology of Miniopterus and limited geographic sampling in continental Africa have undoubtedly contributed to the deficit of continental species.

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  • Bats play a crucial role in reducing agricultural and forest pests, significantly benefiting agricultural productivity in Rwanda.
  • A study examined the diets of 143 insectivorous bats using DNA metabarcoding, revealing that they consume a variety of insects, with a significant portion identified as agricultural pests from different regions.
  • The findings suggest that protecting and promoting Rwandan bat populations could enhance biocontrol of pests, leading to increased crop yields and improved livelihoods for farmers.
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We found similar mild perivascular inflammation in lungs of Bombali virus-positive and -negative Mops condylurus bats in Kenya, indicating the virus is well-tolerated. Our findings indicate M. condylurus bats may be a reservoir host for Bombali virus.

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  • * A high prevalence of retroviruses (74.1%) was found, along with a novel alphacoronavirus and diverse astroviruses in several samples.
  • * Ongoing monitoring of bat populations in Kenya is crucial for the early detection of emerging zoonotic viruses.
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  • The study focuses on the complex relationship between the bat fly species Penicillidia fulvida and its diverse bat hosts, which may suggest the presence of cryptic species despite its apparent generalist behavior.
  • Researchers collected and analyzed genetic data from 65 specimens across Kenya, using techniques like mitochondrial sequencing to understand genetic variation linked to bat hosts.
  • Findings indicate that while P. fulvida shows some genetic structure, it is primarily influenced by geographical factors rather than strict host specificity, highlighting its unique adaptability in host associations.*
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Understanding biodiversity patterns as well as drivers of population declines, and range losses provides crucial baselines for monitoring and conservation. However, the information needed to evaluate such trends remains unstandardised and sparsely available for many taxonomic groups and habitats, including the cave-dwelling bats and cave ecosystems. We developed the DarkCideS 1.

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In the light of the urgency raised by the COVID-19 pandemic, global investment in wildlife virology is likely to increase, and new surveillance programmes will identify hundreds of novel viruses that might someday pose a threat to humans. To support the extensive task of laboratory characterization, scientists may increasingly rely on data-driven rubrics or machine learning models that learn from known zoonoses to identify which animal pathogens could someday pose a threat to global health. We synthesize the findings of an interdisciplinary workshop on zoonotic risk technologies to answer the following questions.

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Despite being nearly 10 months into the COVID-19 (coronavirus disease 2019) pandemic, the definitive animal host for SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2), the causal agent of COVID-19, remains unknown. Unfortunately, similar problems exist for other betacoronaviruses, and no vouchered specimens exist to corroborate host species identification for most of these pathogens. This most basic information is critical to the full understanding and mitigation of emerging zoonotic diseases.

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Previously identified only in Sierra Leone, Guinea, and southeastern Kenya, Bombali virus-infected Mops condylurus bats were recently found »750 km away in western Kenya. This finding supports the role of M. condylurus bats as hosts and the potential for Bombali virus circulation across the bats' range in sub-Saharan Africa.

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  • An estimated 59,000 people die from rabies each year, primarily due to bites from domestic dogs, particularly affecting rural populations in Africa; mass dog vaccinations are essential but resource-intensive.
  • The Laikipia Rabies Vaccination Campaign in Kenya (2015-2017) successfully vaccinated over 13,000 dogs, increasing vaccination coverage from 2% to 24%, although only a few communities met the 70% target needed for effective rabies control.
  • The campaign highlighted both achievements in dog vaccination and challenges such as inadequate post-vaccination monitoring, financial constraints, and the diversity of communities involved, which complicated efforts to reach the target coverage levels.
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  • - The Old World leaf-nosed bats (Hipposideridae) are insect-eating bats found in the Paleotropics, with a complicated evolutionary history that recently confirmed their status as a distinct family separate from related families Rhinonycteridae and Rhinolophidae.
  • - Researchers analyzed genetic variation in Afrotropical hipposiderids using mitochondrial and nuclear DNA sequences to explore their relationships, revealing strong genetic support for generic monophyly and identifying several distinct evolutionary lineages among these bats.
  • - Mitochondrial data indicates multiple colonization events of Africa by Asian hipposiderids and shows significant geographic structuring within species, while nuclear intron sequences display different patterns, suggesting a complex evolutionary history influenced by geographic
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