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Manual E, Chapter 7: Vertebrates

Manual E, Chapter 7: Vertebrates. Dr. Vera Krischik Department of Entomology University of Minnesota. Manual E, Chapter 7: Vertebrates Learning objectives. How certain vertebrates can become pest problems. Control vertebrates w/o endangering nontarget organisms.

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Manual E, Chapter 7: Vertebrates

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  1. Manual E, Chapter 7: Vertebrates Dr. Vera Krischik Department of Entomology University of Minnesota

  2. Manual E, Chapter 7: Vertebrates Learning objectives • How certain vertebrates can become pest problems. • Control vertebrates w/o endangering nontarget organisms. • Use references to continue professional growth.

  3. Manual E, Chapter 7: Vertebrates Terms to know • Game species/small game species: A vertebrate that is hunted by people for sport.

  4. Manual E, Chapter 7: Vertebrates Introduction • Rodents and wildlife are generally are not the magnitude of problem as weeds, insects disease, weather. • This chapter is a guideline to determine if a vertebrate is a pest. • How to control the pest.

  5. Manual E, Chapter 7: Vertebrates Factors affecting control • Mobility: May spend most of their time in area away from crop. • Unpredictably: Many factors, population density, weather, availability of food, influence transition from harmless vertebrate population into pest. • Public perception: Most large vertebrates as gees and deer are held in esteem by public. Efforts to control creates social problems.

  6. Manual E, Chapter 7: Vertebrates Factors affecting control • Legal status: Most species have state or federal laws on protection. • Control techniques: Broadcast chemical controls will not be available due to legal status or environmental contamination. • Most common pests: Meadow mice, voles, ground squirrels, moles, skunks, raccoons. Rabbit (game species), deer (game species)

  7. Manual E, Chapter 7: Vertebrates Factors affecting control • Rabbit (game species) can be controlled by landowners on their property. • Deer (game species) Need to contact the Minnesota Department of Natural Resources

  8. Manual E, Chapter 7: Vertebrates Factors affecting control • Moles like mice, but no tail; velvety fur, huge digging feet • Eat worms, insects, and grubs • Two species in MN: Eastern, common, prairie mole (Eastern) and star-nose mole (N) • Deer (game species) Need to contact the Minnesota Department of Natural Resources

  9. Manual E, Chapter 7: Vertebrates Factors affecting control • Moles burrow in tunnels in lawns and golf courses. • Tunnels 6-18 in below ground interfere with mowing; are home to moles and mice. • Control grubs will reduce mole numbers. • Poison baits and fumigants are not effective. • Traps work the best.

  10. Manual E, Chapter 7: Vertebrates Factors affecting control • Meadow mice are a winter problem and girdle trees and roots, killing them. • Populations are very high some years. Look for droppings, sightings, catches of food, trinkets.

  11. Manual E, Chapter 7: Vertebrates Factors affecting control • Habitat destruction, mouse guards (hardware cloth submerged into soil), trapping, repellents (fungicide thiram), and poison bait (zinc phosphide )for control. • Always use bait stations to prevent nontarget effects on other organisms.

  12. Manual E, Chapter 7: Vertebrates Factors affecting control • 13-lined ground squirrel, 2-8 per acre, small population size • Small areas use traps. • Large areas maybe use poison baits. Rodenticides w/ zinc phosphide, anticoagulants, or other rodenticides. No repellents are registered. • Contact the DNR first

  13. Manual E, Chapter 7: Vertebrates Factors affecting control • Rabbits in winter browse on bark. • Remove brush piles, stone and trash heaps, and other refuge. • No chemicals are registered. • Live traps and removal. • Can use tree guards, extend below snow line into the soil.

  14. Manual E, Chapter 7: Vertebrates Factors affecting control • Deer damage plants • Devices, repellents, fences; hunting during season. • Contact repellents: Bone tar oil and Magic circle; Area repellents: Human hair • Fences; Wire and electric • Contact the DNR first

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