ZOO506 Final Term Past Papers

MUHAMMAD IMRAN · ZOO506-Applied-Entomology-And-Pest-Management · PAST PAPERS · 1. Order coeloptera with example. 10 · Coleoptera ·  Includes: Beetles and Weevils

1. Blister beetle
2. Boll weevil
3. Collops beetle
4. Darkling beetle
5. Dermestid beetle
6. Dung beetle
7. Fig beetle,
8. Flea beetle
9. Lady beetle
10. Long-horned beetle
11. Palo Verde root borer
12. Metallic wood borer

 Mouthparts: Chewing, WeevilPiercing Sucking

 Metamorphosis: Complete Metamophosis

 Beetles are a group of insects that form the order Coleoptera, in the superorder Endopterygota. Their front pair of wings are hardened into wingcases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently.

Q2. What things keep in mind during field scouting. (5 marks)

3. Realistically, a field scouting must know:
4. How to properly identify pests and their damage
5. How to get an accurate assessment of pest populations
6. A field scouts objective is to provide an accurate and unbiased objective of pest

populations

7.  What tools and procedures do you use for alfalfa weevil for potato leafhopper, etc.
8. Both of these examples are pests on alfalfa, however, the sampling procedure is different.

3. Order, family and symptoms of tobacco cutworm.5

Armyworm /Tobacco Cutworm: Spodoptera litura

 Family: Noctuidae  Order: Lepidoptera.

 It is a major and important chewing insect pest of cotton crop.

 Scrapping the epidermal layer, leaving the skeleton of veins of leaf

 During severe attack, only the stem and side shoots will be standing in the field without any leaf or bolls

 Larvae feed the leaves by making small holes.

4. Why foreign insects brought in the country.3

Q1. Various laws and regulations both Federal and state have been enacted to prevent the introduction of foreign pests:

1. To prevent their spread within the country
2. To enforce control and extermination
3. To ensure that chemicals used for controlling insects are neither adulterated nor misbranded
4. Which in many instances have proved valuable in reducing the numbers of foreign pests
5. Probably the first introduction attempted from a foreign country was the now classic case
6. From abroad to combat those foreign insect pests brought to this country accidentally but

5 Demage control by termies.3

1. The use of partially decomposed manure should be avoided 

Locate and destroy the termite colony near by field

 Irrigation water with crude oil emulsion.

 The removal of decaying organic matters cow dung, wood or dry stubbles from the field

 Setts treatment with Imidacloprid (0.1%) or Chlorpyriphos 20 EC 0.04 % for 5 min.

 Application of well rotten Neem cake manure 60 Cartloads/ ha.

 Spray Chlorpyriphos 20%EC 750 ml/ha

6 What is biological control 2 marks

Biological control or biocontrol is a method of controlling pests such as insects, mites, weeds and plant diseases using other organisms. It relies on predation, parasitism, herbivory, or other natural mechanisms, but typically also involves an active human management role.

7 Method of biological control.5

Biological control methods Biological control involves the use of insects or pathogens (diseases) that affect the health of weeds (called invasive plants in the Biosecurity Act 2014). Usually, these biocontrol agents are from the same country of origin as the weed species.

Biosecurity Queensland undertakes biological control research in Queensland. Strict measures are in place to ensure that these agents do not negatively affect native plants and animals or horticultural and agricultural crops.

Biosecurity Queensland's biological control group is presently working on 10 weeds of concern to Queensland:

bellyache bush cat's claw creeper lantana madeira vine mother-of-millions parthenium weed prickly acacia siam weed cabomba opuntioid cacti.

A number of biological controls have been released at strategic infestation sites, and are spreading to other infestations of their host plant.

Biological control agents can reduce the vigour, size and competitiveness of weed infestations; however, they rarely get rid of them altogether. Biological control works best in conjunction with other control methods

8 Appearance of adult rice-ear.2

Rice earhead bug  The adult of Leptocorisa oratorius is green, light brown or mixed yellow in color 

The adult are slender and about 20mm long.

9 Define arthropods? 2

An “arthropod” is an invertebrate animal that has an exoskeleton, a segmented body, and jointed appendages

any of a phylum (Arthropoda) of invertebrate animals (such as insects, arachnids, and crustaceans) that have a segmented body and jointed appendages, a usually chitinous exoskeleton molted at intervals, and a dorsal anterior brain connected to a ventral chain of ganglia