A5049029194- Plant and animal studies
- Animal Behavior and Reproduction
- Genetic diversity and population structure
- Avian ecology and behavior
- Animal Vocal Communication and Behavior
- Tree Root and Stability Studies
- Religion, Society, and Development
- Animal Ecology and Behavior Studies
- Wood Treatment and Properties
- Species Distribution and Climate Change
- Religion and Sociopolitical Dynamics in Nigeria
- Insect and Arachnid Ecology and Behavior
- Ecology and Vegetation Dynamics Studies
- African cultural and philosophical studies
- Antioxidant Activity and Oxidative Stress
- Evolution and Paleontology Studies
- Lepidoptera: Biology and Taxonomy
- Neurobiology and Insect Physiology Research
- Bird parasitology and diseases
- Forest Biomass Utilization and Management
- Bamboo properties and applications
- Animal Nutrition and Physiology
- Plant and Fungal Species Descriptions
- Wildlife Ecology and Conservation
University of Cyprus
2017-2024
Queen Mary University of London
2024
Michael Okpara University of Agriculture
2023
Despite our understanding of the principal factors that shape bird migration strategies, there is conflicting evidence regarding role habitat in shaping routes and schedules, including day night activity differences between autumn spring. For fly-and-forage migrants, we predict characteristics might guide speed, route selection migrating schedules.We use solar-powered GPS transmitters, obtaining high accuracy data, to monitor migratory movements Eleonora's falcon breeding Cyprus, which...
It has long been of interest to identify the phenotypic traits that mediate reproductive isolation between related species, and more recently, genes underpin them. Much work focused on identifying associated with animal colour, candidate gene CYP2J19 identified in laboratory studies as ketolase converting yellow dietary carotenoids red ketocarotenoids birds pigments. However, evidence explains variation feather coloration wild populations is lacking. Hybrid zones provide opportunity specific...
Abstract The criteria for species delimitation in birds have long been debated, and several recent studies proposed new methods such delimitation. On one side, there is a large consensus of investigators who believe that the only evidence can be used to delimit molecular phylogenetics, with increasing numbers markers gain better support, whereas on other, are adopting alternative approaches based largely phenotypic differences, including morphology communication signals. Yet, these little...
Incomplete reproductive isolation between related species of birds at contact zones is increasingly being documented. Such hybridization typically occurs sister taxa that diverged in relatively recent times, and hybrids are most often identified based on their intermediate phenotypic characteristics and, increasingly, through genetic admixture analysis. When have been diverging over longer time scales, prezygotic barriers expected to evolve, precluding maladaptive interbreeding. Here, we...
Abstract Most studies on the processes driving evolutionary diversification highlight importance of genetic drift in geographical isolation and natural selection across ecological gradients. Direct interactions among related species have received much less attention, but they can lead to character displacement, with recent research identifying patterns displacement attributed either or reproductive processes. Together, these could explain complex, trait-specific diversification. Few studies,...
Following the discovery of a uniquely plumaged Pogoniulus tinkerbird in Cryptosepalum forest northwest Zambia 1964 and its subsequent description 1965 as distinct species, White‐chested Tinkerbird makawai , there has long raged debate regarding taxonomic status. The failure to find further individuals spite numerous attempts led several taxonomists question status species. Using DNA from P. type specimen we performed molecular phylogenetic analysis including samples other species and,...
Species-rich Lotka-Volterra competition models of ecosystem dynamics transition with increasing species pool size from a phase well-defined stable equilibrium to dynamic that remains incompletely understood. We analytically describe the statistical mechanics steady state deep inside this phase, characterized by incessant turnover in composition, and extract distribution invasion fitness random invaders. find probability universally equals 1/2. This striking result agrees well observations...
It has long been of interest to identify the phenotypic traits that mediate reproductive isolation between related species, and more recently, genes underpin them. Much work focused on identifying associated with animal colour, candidate gene CYP2J19 identified in laboratory studies as ketolase converting yellow dietary carotenoids red ketocarotenoids birds pigments. But evidence explains variation feather coloration wild populations is lacking. Hybrid zones species provide opportunity...
It has long been of interest to identify the phenotypic traits that mediate reproductive isolation between related species, and more recently, genes underpin them. Much work focused on identifying associated with animal colour, candidate gene CYP2J19 identified in laboratory studies as ketolase converting yellow dietary carotenoids red ketocarotenoids birds pigments. But evidence explains variation feather coloration wild populations is lacking. Hybrid zones species provide opportunity...
Physiological constraints related to atmospheric temperature pose a limit body and appendage size in endothermic animals. This relationship has been summarized by two classical principles of biogeography: Bergmann’s Allen’s rules. Body may also constrain other phenotypic traits important ecology, evolution behaviour, such effects have seldom investigated at continental scale. Through multilevel-modelling approach, we demonstrate that continent-wide morphology African barbets follows...
Abstract We examined the mechanical properties of four native wood species in southeastern Nigeria, including Alstonia congensis , Ceiba pentandra Milicia excelsa and Terminalia superba . The samples were milled trimmed to standard sizes subjected a three-point bending test. modulus rupture (MOR) compression parallel grain tested using Universal Testing Machine, with machine no: 0500-10080. computed force at point failure, elasticity grain. Here show that from selected indigenous timber had...
Abstract The impact of habitat disturbance on butterfly species assemblage in the Afrotropical region was studied by investigating inter‐habitat community variation butterflies. Distinct assemblages were found across surveyed types, with 1554 adult butterflies 126 from five families recorded. Primary forests had highest diversity and a higher dissimilarity between Secondary Plantation Forests. Of recorded, 80 unique to one habitat. We provide new insights into ecology region, which can...
Physiological constraints related to atmospheric temperature pose a limit body and appendage size in endothermic animals. This relationship has been summarized by two classical principles of biogeography: Bergmann’s Allen’s rules. Body may also constrain other phenotypic traits important ecology, evolution behaviour, such effects have seldom investigated at continental scale. Through multilevel-modelling approach, we demonstrate that continent-wide morphology African barbets follows...