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General Entomology

by: Nigel Schulist

General Entomology ENT 425

Nigel Schulist
GPA 3.91


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Class Notes
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This 5 page Class Notes was uploaded by Nigel Schulist on Thursday October 15, 2015. The Class Notes belongs to ENT 425 at North Carolina State University taught by Staff in Fall. Since its upload, it has received 47 views. For similar materials see /class/223800/ent-425-north-carolina-state-university in Entomology at North Carolina State University.


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Date Created: 10/15/15
Lecture Outline INSECTS AS PESTS l Contending with Pests A Annoyance and irritation B Disease transmission 1 pathogens a arbovirus 2 reservoirs a zoonosis 3 vectors a mechanical transmission b facultative transmission c obligatory transmission d transovarial transmission e persistent vs nonpersistent 4 biocenosis C Bites and stings l venom 2 allergen 3 anaphylaxis 4 entomophobia 5 delusory parasitosis D Damage to growing plants 1 agricultural commodities 2 forest ecosystems 3 greenhouse and ornamentals E Damage to stored products and structural materials 1 natural fibers 2 wood products 3 stored grains ll Pest Outbreaks A Etiology 1 environmental change 2 introduction from abroad 3 destruction of natural enemies 4 lower damage tolerances 5 resistance B Economic injury level C Economic threshold III Survey Techniques A Population sampling methods I lo t wm Sweep net samples Light traps Visible UV Sticky boards colors Sex pheromone traps Bait traps Pitfall traps Berleze extraction B Sampling strategies I 2 3 4 Population density mean standard deviation Frequency sampling poisson distribution Presenceabsence sampling binomial statistics Seguential sampling Lecture Outline PEST MANAGEMENT Control Strategies A Legal controls 1 quarantine 2 licensing and certification B Cultural controls 1 crop 2 3 4 rotation cultivation sanitation planting or harvesting dates C Physical or mechanical controls 1 window screens 2 wire 3 4 D Biological drags flaming electrocution control 1 predators 2 3 4 a b c parasites pathogens strategies environmental manipulation mass rearing and mass release augmentation 5 attributes of a good biocontrol agent a b c d e high reproductive rate good synchrony with host host specificity tolerates wide range of environ conditions good host searchingfinding ability E Genetic control 1 Induced sterility C irradiation chemosterilization cytoplasmic incompatibility resistance tolerance resistance antibiosis antixenosis 3 Biotechnology and bioengineering a transgenic plant substances Chemical control 1 Allelochemicals a attractants b repellants 2 Semiochemicals a aggregation or dispersal pheromones b sex pheromones i mass trapping ii mating disruption iii innundation c insect growth regulators IGR i juvenile hormone analogues ii molting hormone analogues iii chitin inhibitors iv chemosterilants 3 Conventional insecticides a Stomach poisons i metal salts ii organic compounds b Contact poisons i inorganic compounds ii natural oils and botanicals iii chlorinated hydrocarbons iv organophosphates v carbamates vi synthetic pyrethroids c Constraints i residues ii activity spectrum iii biomagnification iv resistance v microbial degradation 4 Microbial pesticides a Bacteria b Fungi c Viruses d Protozoa e Bioengineered products 5 Pesticide formulations a adjuvants b fumigants c wettable powders d emulsifiable concentrates e granules f systemic insecticides conomics of insecticide development a discovery and patenting b testing and development c marketing and advertising 6 E


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