A5001797533- Date Palm Research Studies
- Insect Resistance and Genetics
- Insect Utilization and Effects
- Insect Pest Control Strategies
- Genetically Modified Organisms Research
- Wildlife Ecology and Conservation
- Insect and Arachnid Ecology and Behavior
- Insect and Pesticide Research
- Insect behavior and control techniques
- Forest Insect Ecology and Management
- Insect-Plant Interactions and Control
- Veterinary Equine Medical Research
- Aquaculture Nutrition and Growth
- Entomopathogenic Microorganisms in Pest Control
- Essential Oils and Antimicrobial Activity
- Banana Cultivation and Research
- Animal Behavior and Welfare Studies
- Plant and animal studies
- Plant Parasitism and Resistance
- Bat Biology and Ecology Studies
- Botanical Research and Applications
- Plant and soil sciences
- Neurobiology and Insect Physiology Research
- Phytoplasmas and Hemiptera pathogens
- Yeasts and Rust Fungi Studies
Universidad Nacional Experimental Simón Rodríguez
1998-2021
Fujian Agriculture and Forestry University
2019-2020
Institute of Applied Ecology
2019
Escuela Superior Politécnica del Chimborazo
2017
Universidad Estatal Amazónica
2017
Imperial College London
2001-2004
University of Padua
2003
Simón Bolívar University
1992-1996
The diamondback moth, Plutella xylostella is a cosmopolitan pest that has evolved resistance to all classes of insecticide, and costs the world economy an estimated US $4-5 billion annually. We analyse patterns variation among 532 P. genomes, representing worldwide sample 114 populations. find evidence suggests South America geographical area origin this species, challenging earlier hypotheses Old-World origin. Our analysis indicates experienced three major expansions across world, mainly...
For the Makiritare (Ye'Kuana) native people of Alto Orinoco (Venezuela), earthworms (Anellida: Glossoscolecidae) are an important component diet. Two species in particular widely consumed: 'kuru' (Andiorrhinus kuru n. sp.) and 'motto' motto). We analysed eviscerated body proper, whole smoked preparations motto for their content protein amino acids, fatty acids 20 minerals trace elements. The samples contained large amounts (64.5-72.9% dry weight), essential calcium iron together with notable...
We describe the use of alerito, larva Rhynchophorus palmarum (Coleoptera: Curculionidae), by Jivi (Guajibo) community Alcabala de Guajibo, Amazonas, Venezuela. The Indians gather palm worms from damaged or fallen stems and eat them raw roasted. analysed nutrient composition worm found that it is an excellent source protein, vitamins A E, minerals. further development a local, controlled small‐scale production system for in Amazon. Larvae are bred using wild materials traditional Indian...
At least 32 Amerindian groups in the Amazon basin use terrestrial invertebrates as food. Leaf– and litter–consuming provide more important, underestimated food sources for many groups. Further, earthworms are also an important resource Y'Kuana (also known Makiritare) Alto Orinoco (Amazonas, Venezuela). By selecting these small Amerindians choosing their animal from those webs rainforest which have highest energy flow constitute greatest renewable stock of readily available nutrients. Here we...
Termites seri (especially Syntermes aculeosus soldiers) are collected extensively by Makiritare (or Ye Kuana Indians in the Alto Orinoco) and consumed raw or after soaking hot water (60 -80 C). They gathered be means of termite fishing technique then transported into a package called kukuruciu made with Musacean (Phenakospermum sp.) leaves. The solders constitute food source great nutritional value: high proteins essential amino acids such as trytophan, which is generally limiting insects....
We evaluated the insecticide activities of aqueous extracts five species plants from Ecuadorian Amazon (Deguelia utilis (ACSm.) AMGAZEVEDO (Leguminosae: Papilionoideae), Xanthosoma purpuratum K. Krause (Alismatales: Araceae), Clibadium sp. (Asteracea: Asterales), Witheringia solanacea L'Hér (Solanales: Solanaceae), and Dieffenbachia costata H. Karst. ex Schott Araceae)) plus Cymbopogon citratus Stapf. (Poales: Poaceae) under laboratory, open-field conditions in Plutella xylostella L....
Abstract We present an idea that larvae of some Bacillus thuringiensis ( Bt ) resistant populations the diamondback moth, Plutella xylostella (L.), may be able to use Cry1Ac toxin derived from as a supplementary food protein. transgenic crops could therefore have unanticipated nutritionally favourable effects, increasing fitness populations. This is discussed in context evolution resistance crops.
We are reporting the first locality of invasive giant African snail, Achatina (Lissachatina) fulica (Férussac, 1821) in Ecuadorian Amazon. It was found present 32 out 50 urban sites studied. The abundance where relatively high when compared to literature from other parts world. snails were aggregations, usually foraging — most often on dogs' feces. Statistical analysis suggests a preference toward this source alimentation. This is report such species, which highly significant considering...
In tropical areas worldwide, more than 1000 terrestrial species of invertebrates are used as food. For populations Amazonian areas, different insects and other serve nourishing food sources. Here, we document the composition nutritional quality some consumed in Venezuelan Amazonia, including termites (Isoptera) earthworms (Glossoscolecidae) eaten by Ye'Kuana (Makiritare) caterpillars (Lepidoptera) grubs (Coleoptera: Scarabaeidae) Yanomamo. Consumption 100 g any these contributed 1.2–9.4...
ABSTRACT In tropical areas worldwide, more than 1000 terrestrial species of invertebrates are used as food. For populations Amazonian areas, different insects and other serve nourishing food sources. Here, we document the composition nutritional quality some consumed in Venezuelan Amazonia, including termites (Isoptera) earthworms (Glossoscolecidae) eaten by Ye'Kuana (Makiritare) caterpillars (Lepidoptera) grubs (Coleoptera: Scarabaeidae) Yanomamo. Consumption 100 g any these contributed...
This study provides a field test of the behavioral activity sugar cane weevil Metamasius hemipterus (L.) pheromone with odors its host plants, and describes development laboratory two-cup pitfall olfactometer trap to determine effectiveness baits. The aromatic sources were plant odors: a) pseudostem rhizome Musa sp “apple” banana (AAB) b) stalks cane, Saccharum sp. olfatometric results show that do attract insects. Sugar is more attractive than rhizome, as stalk. Two traps tested, one lid...
Abstract The parasitism rate and host-feeding of Tamarixia radiata (Hymenoptera: Eulophidae), an ectoparasitoid Diaphorina citri (Hemiptera: Liviidae), were evaluated at 20, 27.5, 30, 35°C, 70 ± 5% RH, 14 h photoperiod. biological control efficacy T. was by linking the age-stage predation with two-sex life table. net (C0) 32.05, 54.40, 17.25, 1.92 nymphs per female parasitoid respectively. total killing (Z0) 103.02, 223.82, 72.95, 6.60 Noneffective observed 35°C because high mortality this...
Abstract Killing behavior and consumption rate are important components that determine the final predation rate. We studied predatory of a female jaguar with one offspring in Hato Piñero Venezuelan Los Llanos. Seven carcasses freshly killed calves were found over period 9 days. Automatic video recording was used to document jaguar’s behavior. Our study revealed detailed, repetitive sequence while hunting for calves. The started killing calf by biting through skull or neck, then she dragged...
Abstract: Populations of Plutella xylostella L. with high (laboratory re‐selected) and low levels (unselected) resistance to the Bacillus thuringiensis ( B.t. ) toxin Cry1Ac were maintained under controlled environment conditions in absence any further selection pressure. Larvae either discrete generations on freshly excised leaves replaced ad lib (standard culture system) or microcosm cages holding up 12 potted Chinese cabbage plants, allowing progressively overlapping insects. After cages,...
The aim of resistance management is to slow and ideally reverse the development in pest population. Since 1996, million acres crops have been planted that are genetically engineered with Bacillus thuringiensis (Bt) for insect resistance. novelty Bt technology it possible control principal force an agroecosystem microevolutionary process from outset, i.e., selection pressure. In crops, toxin can be expressed constitutively at a relatively constant dose or expression restricted specific crop...
Abstract: Current recommendations to delay the evolution of resistance Bacillus thuringiensis crops are that a minimum 5–50% crop‐growing region should include non‐ B. varieties as refuges. These based in part on assumption will be inherited recessive trait. Laboratory microcosm experiments described with transgenic canola expressing Cry1Ac and non‐recessive resistant population diamondback moth Plutella xylostella , which effect different sizes refugia (0%, 20% 50%) was compared over five...