Aphids & Fruit Trees with Stephen A. Marshall

Entomologist Stephen A. Marshall, who teaches entomology at The University of Guelph in Ontario is the author of the classic tome Insects: Their Natural History and Diversity. And he has just completed a new book Beetles: the Natural History and Diversity of Coleoptera. In this episode he talks about aphids and the damage they can do to your fruit trees and fruiting shrubs.

The host of the Orchard People radio show and podcast is Susan Poizner of the fruit tree care education website http://www.orchardpeople.com.

Formerly known as the Urban Forestry Radio Show, from germination in January 2016 until December 2023, we have grown over the years, thanks to the collective knowledge and collaboration of our monthly guests, organizations, and audience from around the world.

We offer something for everyone to support your fruit tree care journey, whether you prefer to learn through listening, watching, and/or reading.

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• (00:00) - Introduction and Disclaimer
• (00:18) - Welcome to the Urban Forestry Radio Show
• (01:24) - Aphid Invasion in Toronto's Community Orchard
• (04:31) - Meet the Guest: Dr. Stephen Marshall
• (05:17) - Understanding Aphids: Reproduction and Defense Mechanisms
• (09:18) - Aphid Colors and Their Significance
• (10:34) - Aphid Feeding Habits and Honeydew
• (13:34) - The Role of Ants in Protecting Aphids
• (14:41) - Factors Influencing Aphid Populations
• (16:19) - The Impact of Weeds and Other Plants on Aphid Numbers
• (18:42) - Listener Emails and Questions: How effective are purchased lady beetles, what attracts aphids
• (24:56) - Lady Beetles: The Natural Aphid Predators
• (26:38) - Diverse Diets of Lady Beetles
• (27:46) - Lady Beetles as Biological Pest Control
• (28:48) - Understanding Insect Mouthparts
• (30:40) - Aphid Predators: Lacewings and Flower Flies
• (32:23) - Managing Aphid Infestations in Orchards
• (35:48) - Community Solutions for Aphid Control
• (40:12) - The Role of Flower Flies in Aphid Control
• (45:05) - Damsel Bugs and Other Predatory Insects
• (46:53) - Conclusion and Farewell