Gypsy moth in Canada: Behavior and control

26

Transcript of Gypsy moth in Canada: Behavior and control

Page 1: Gypsy moth in Canada: Behavior and control
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Forestry Canada

Forestry Canada is the main focus for forestry matters in the federalgovernment. It provides national leadership through the development, coordination,and implementation of federal policies and programs to increase long-termeconomic, social, and environmental benefits from the forest sector for Canadians.

Forestry Canada is a decentralized organization with six regions, two nationalresearch institutes, and seven regional sub-offices located across Canada.Headquarters is located in the National Capital Region in Hull, Quebec.

In support of its mandate, Forestry Canada carries out the following activities:.administers forest development agreements negotiated with the provinces.undertakes and supports research, development, and technology transfer in

forest management and utilization.compiles, analyzes, and disseminates information about national and

international forest resources and related matters.monitors disease and insect pests in Canada's forests.provides information, analyses, and policy advice on economics, industry,

markets, and trade related to the forest sector.promotes employment, education, and training opportunities in the forest

sector.promotes public awareness of all aspects of the forest sector.Forestry Canada interacts regularly with provincial and territorial

governments, industry, labor, universities, conservationists, and the public throughsuch .bodies as the Canadian Council of Forest Ministers, the Forest Sector AdvisoryCouncil, the Forestry Research Advisory Council of Canada, the Canadian ForestInventory Committee, the Canadian Committee on Forest Fire Management, theCanadian Interagency Forest Fire Centre, and regional consultative committees.Forestry Canada is also active in international forestry agencies such as theInternational Union of Forestry Research Organizations and the Food andAgriculture Organization, as well as in technical and trade missions.

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C>Minister of Supply and Services Canada 1990Catalogue No. Fo46-13/32-1990ISBN 0-662-57473-7ISSN 0705-324X

Copies of this publication may be obtained free of charge from:

Forestry CanadaCorporate and Public AffairsOttawa,OntarioKIA IG5

A microfiche edition of this publication may be purchased from:

Micromedia Ltd.165 Hotel-de- Ville St.Hull, QuebecJ8X 3X2

Recommendations for insecticide use in this publication are intended as guidelinesonly. Any application of an insecticide must be in accordance with directions printedon the product.1abel of that insecticide as prescribed under the Pest Control ProductsAct. Always read the label. An inse«ticide should also be recommended byprovincial authorities. Consult them for specific advice.

For more information on insecticides, please contact Agriculture Canada's NationalPestjcide Information Service at 1-800-267-6315.

The exclusion of certain manufactured products does not necessarily implydisapproval nor does the mention of other products necessarily imply endorsementby Forestry Canada.

~& Text printed on paper containing recovered waste.

Pensez Ii recycler!

Cover: (Top left) red oak stand defoliated by gypsy moth. (P. Therrien)(Center) mature caterpillar of a gypsy moth. (T. Arcand)(Bottom right) moderate defoliation of a red oak by gypsy moth. (L. Jobin)

Think Recycling!

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Contents

Abstract 5

Introduction 5

History and Distribution 5

Host Plants 6

Description 7Egg 7Caterpillar 7Pupa 8Moth 9

Life Cycle 10Laying and Hatching 10Period of Caterpillar Development 10Caterpillar to Moth 11Emergence of the Adult Moth, Mating, and Egg Laying 11

Environmental Influences.Temperature. 12Light 12Moisture 12Wind 12

Nonliving 12

Environmental Influences -Living 12Food 12Population Density 13Predators 13Parasites 13Pathogens 14

Susceptibility of the Forest 15

Effects of Defoliation 15Negative Effects 15A Positive Effect 17

Control 17Physical Methods 19Silviculture Methods 19Insecticides 20

Conclusion 21

Bibliography 21

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Page 25: Gypsy moth in Canada: Behavior and control
Page 26: Gypsy moth in Canada: Behavior and control