A5004484846- Mosquito-borne diseases and control
- Environmental Toxicology and Ecotoxicology
- Insect Resistance and Genetics
- Insect symbiosis and bacterial influences
- Crustacean biology and ecology
- Insect and Pesticide Research
- Viral Infections and Vectors
- Heavy metals in environment
- Malaria Research and Control
- Coral and Marine Ecosystems Studies
- Insect Pest Control Strategies
- Physiological and biochemical adaptations
- Atmospheric chemistry and aerosols
- Aquatic Ecosystems and Phytoplankton Dynamics
- Aquaculture Nutrition and Growth
- Toxic Organic Pollutants Impact
- Analytical chemistry methods development
- Water Quality and Pollution Assessment
- Microbial bioremediation and biosurfactants
- Oil Spill Detection and Mitigation
- Air Quality and Health Impacts
- Fish biology, ecology, and behavior
- Ichthyology and Marine Biology
- Congenital Anomalies and Fetal Surgery
- Pharmaceutical and Antibiotic Environmental Impacts
University of the West Indies
2013-2024
AdventHealth Orlando
2024
University of the West
2006-2024
Birds Canada
2021
Abubakar Tafawa Balewa University
2019
Khartoum International Institute for Arabic Languague
2018
Port of Spain General Hospital
2013
University of the West Indies System
2004-2011
Columbia Environmental Research Center
2011
United States Geological Survey
2011
A simple, efficient and cost effective method was developed optimized for the digestion of fish tissue determination Lead, Cadmium, Mercury, Antimony, Arsenic Selenium by FAAS, CVAAS HGAAS. Three more common classical open tubed acid procedures were explored with purpose optimizing variables selecting single most efficient, convenient inexpensive method. The effect parameters such as media, time temperature on efficiency extraction heavy metals from examined. Concentrated nitric determined...
Mercury is a ubiquitous pollutant of global concern but the threat exposure not homogenously distributed at local, regional, or scales. The primary route human to mercury through consumption aquatic foods, which are culturally and economically important in wider Caribbean Region, especially for Small Island Developing States (SIDS). We compiled more than 1600 samples 108 unique species fish invertebrates collected between 2005 2023 from eleven countries territories Region. There was wide...
Egg is a nutrient dense food. The cyclical egg glut characterized by spoilage, quality deterioration and wastage imparts negatively on poultry farmers. Powdered dried provides convenient alternative to this problem. This study was aimed evaluate powder from ISA Brawn (T1), Local chicken (T2) Noiler (T3) using Spray Dried (SDWEP), Freeze (FDWEP) Dehydrator (DDWEP) methods. A total of 720 were eggs obtained T1, T2 T3, comprising 240 each the breed 30 species used for SDWEP, DDWEP SDWEP where...
Ectotherms depend on the environmental temperature for thermoregulation and exploit thermal regimes that optimise physiological functioning. They may also frequent warmer conditions to up-regulate their immune response against parasite infection and/or impede development. This adaptive response, known as 'behavioural fever', has been documented in various taxa including insects, reptiles fish, but only endoparasite infections. Here, a choice chamber experiment was used investigate...
To evaluates carbon dioxide (CO2) production from yeast/sugar mixtures and its efficiency as an attractant in BG-Sentinel traps. The rate of CO2 was optimized for different mixtures. mixture then used bait this compared to octenol baited (5 g: 280 g) 300 mL water generated the highest volume CO2. traps caught significantly more mosquitoes than Yeast-produced can effectively replace baits BG This will reduce costs allow sustainable mass-application large scale surveillance programs.
The chemical vapor generation atomic absorption spectrometry technique is extremely popular for trace analysis specifically hydride continuous flow systems arsenic, antimony, selenium and cold mercury. Optimizing the instrument parameters as well generating reactions will improve sensitivity reliability of results obtained. advantage optimizing these conditions increases production hydrides or species formed thereby improving recoveries. In addition this helps to reduce interferences from...
Abstract The use of lure-and-kill, large-volume ovitraps to control Aedes aegypti and albopictus populations has shown promise across multiple designs that target gravid females (adulticidal) or larvae post-oviposition (larvicidal). Here we report on a pilot trial deploy 10 L yeast-baited at select sites in Curepe, Trinidad, West Indies during July December, 2019. Oviposition rates among placed three Treatment were compared limited number traps Control areas (no management performed), Vector...
The toxicities of seven chemicals [cadmium (Cd) chloride, potassium dichromate, sodium dodecyl sulfate, chloride (KCl), Triton X-100, zinc (Zn) and copper (Cu) (II) sulfate] were determined using the tropical freshwater cladoceran, Ceriodaphnia rigaudii temperate species, Daphnia magna. Data generated was subsequently used to determine relative sensitivities both interspecies correlation compare 48 h LC50 values for species. C. ranged from 0.002 mg L−1 (potassium dichromate) 21.1 whereas...
Test protocols citing mysids as a standard test species often recommend juveniles (48 h) the most appropriate life stage for testing. Acute toxicity tests were conducted with six toxicants, three stages of Metamysidopsis insularis; h), late (7–12 days) and adults (>13 days), to determine whether there significant differences in sensitivity between stages. Three compounds tested (sodium dodecyl sulphate, potassium dichromate, chloride) showed significantly higher 96 h-LC50 when compared...
An accessory spleen is defined as ectopic splenic tissue that develops due to failure of fusion cells during embryonic development they migrate from the midline left upper quadrant. While benign, complications may arise which include trauma, torsion, or infarction tissue. Additionally, patients who have had a splenectomy secondary treatment for previous pathology such haematological malignancy idiopathic thrombocytopenia purpura experience persistent symptoms The presence an therefore...
Pesticides can interfere with various aspects of growth and the normal molt cycle a crustacean. Poppiana dentata (Randall, 1840), an indigenous crab species, spends most its life in, proximal to, benthic sediments in which pesticide residues reside. This study sought to assess sublethal effects locally-used, commercial malathion insecticide on P. dentata. Juvenile crabs were obtained from berried females collected northwest Trinidad. Young placed control (insecticide-free) treatment exposure...
There is a global lack of data concerning shark consumption trends, consumer attitudes, and public knowledge regarding sharks. This the case in Trinidad Tobago, where popular culinary delicacy. A Knowledge, Attitudes, Practices (KAP) survey was conducted Tobago. Six hundred seven questionnaires were administered. Univariate stepwise multivariate logistic regressions performed to test association between KAP demographic categories. The response rate 93.4% with 567 returned (473 from 94...
The frog Physalaemus is potentially useful for ecotoxicological studies in the Neotropics, and on large neglected family Leptodactylidae. biology of adults foam nests well known but larval growth little studied, with previous estimates 40-60 days to metamorphosis. We investigated multiple factors affecting development (water change; water flow; diet type; substrate background colour; temperature; container hygiene; aeration; tadpole age; relatedness) develop a laboratory rearing system,...