Review Questions for ESRM 451 Final Exam 2008 Final Exam Study Questions (1) Describe a set of IPM rules in your management of rhododendron root weevil problems around the University of Washington’s president’s home. Then describe an IPM plan for these weevils at one of Everett’s city parks. (2) What is the common name or generic name of the registered name, Thuricide? See the appendix #1. (3) What is the LD50 of Thuricide? If you weigh about 145 lbs. (66 kg), what amount of Thuricide would you have to drink before the pesticide would do you damage? (4) Can Bio-hit be used on moths with a low pH? Why not? (5) It turns out that Bio-hit has a potency of 14,000 IUs and the product Vault 16,000 IUs. You have an urban planting of Ceonothus being defoliated by the rusty tussock moth (Orgyia antiqua). If you were to choose Vault to manage the pest, what do the additional 1,000 IUs mean to you? Does this affect the LD50 of Vault? (6) A new client (a retired arboretum manager) who loves to plant spruces and other conifers calls you in. She has a row of Norway spruces across her front yard, a large grand fir near the entrance of her home (this fir was planted from seeds collected by the Lewis and Clark expedition) and a couple of sickly subalpine firs bordering her driveway. In the backyard she has three young, but chlorotic eastern hemlocks, as well as a 300 yr-old Douglas fir which has been suffering from root compaction and damage for the past 10 yrs – when a small studio was built in the back yard. This Douglas-fir is turning from bright green to yellowish brown (it’s dying). What insect problems will she have or is currently having with these trees? What can she do about these problems? (7) Upon inspection of the Boeing-family’s yard, you note the following problems: • The rhododendrons have notched leaves, some plants have mottled, chlorotic leaves whose undersides are stippled with signs of blackish fecal matter; • The upper surface of leaves on the camellias looks chlorotic and covered with sooty mold. On inspecting the under surface you note whitish-scale-like blobs and tiny crawlers (we haven’t specifically covered this in class, but look it up); • Even though your client hired you to water the huge lawn with treated effluent water from Metro Sewage, there are large necrotic areas in the lawns. Upon prying up the turf you note elongated brownish insects with peculiar mouth-hooks hanging on to the roots. • One of the larger American Elms has four or five dying limbs. Two European elms nearby have had their leaves almost entirely skeletonized by a defoliator. (a). what insect problems does your client have?Review Questions for ESRM 451 Final Exam 2008 (b). what solutions can you offer to reduce damage? (c). what general advice can you give this client to reduce damage in the future? (8) Write at least two sentences on the biology of the following insects: • Tent caterpillars • Scales • Grubs in the lawn • The chrysomelid leaf beetles • Insects which have winged and wingless generations that produce honey dew, sooty mold on foliage (indirectly) and are found on beech, birch, maple, rhododendron, you name it • Beetles associated with the decline and eventual death of American elms • Label which larva is a sawfly, which a beetle, and which a lepidopteran. ________________________ ________________________ __________________________Review Questions for ESRM 451 Final Exam 2008 (8) Name the following: • Coleopteran pest of the urban environment • A homopteran • A lepidopteran • A dipteran • A hymenopteran • A neuropteran (9) In two sentences, describe” • NPV viruses • Permanent biological control • Temporary biological control • Bt • Direct vs. indirect pest (10) Mites have ____________________mouthparts, while those of insect’s are___________________________________________________. (11) Matching: 1. Beetles a. have hard wing covers 2. Aphids b. contain many parasitoides 3. Hemiptera c. the insect between molts 4. IPM d. produce honey dew 5. Insects e. used to control root weevils 6. Mites f. have mandibles and maxilla 7. Highly refined oils g. asphyxiate insect eggs 8. Thrips h. Mandibulata 9. Bt i. contain the parasitoids 10. Apocrita j. Hymenoptera 11. Beauvaria bassiana k. damage flower parts 12. Nematodes l. wood wasps and sawflies 13. Symphyta m. has rules 14. Complete metamorphosis n. bugs, aphids and others 15. Instar p. have gradual metamorphosis q. have over a million species r. contain the mayflies s. contain the Apocrita sawfliesReview Questions for ESRM 451 Final Exam 2008 Index IReview Questions for ESRM 451 Final Exam