Chapter 2 Flashcards
Pests
Four main groups of Pests
Insects and invertebrates, vertebrates, plants, microorganisms
Seven main pest problems + EX
Structural damage (termites), property damage (clothes moths), food concerns (plant disease), health risks (pests can spread disease), risks to environment (defoliation), reduced aesthetics (thrips), impaired function (tree roots clogging drains)
Four main pest needs
Food, water, shelter, breeding sites
Insects
six legs, three body regions, chewing or sucking mouth parts, antennae, can have wings, goes through life cycles of metamorphasis (ex. aphids)
Invertebrates
Arachnids (spiders, ticks, and mites), centipedes, millipedes, nematods, mollusks (ex. TSSM)
Vertebrates
Rodents, birds, and fish
No metamorphosis
Almost no change in insect after hatching, adults do not have wings.
Gradual Metamorphosis
Three stages of development: egg, nymph, adult. Nymph can have multiple instars. Wings develop slowly over the instars
Complete metamorphosis
Four Stages of development: egg, larva, pupa, and adult. Larva can have multiple instars, can look very different to the adults and have different habitats
Weeds
A plant that is growing where it is not wanted
Damage that comes from pest needs
Food- they can eat plants as well as building materials. Water- they can clog plumbing. Shelter- they can invade homes/structures. Breeding sites- They can build nests in public areas
Insect damage and spread
They feed on plants, and can carry diseases. They can spread by flying or being carried by animals/objects.
Annual weeds
Life cycle is >1 year. They grow from a seed, mature and produce seed. (ex grass and broadleaf).
Biennial weeds
Life cycle is ~2 years. Year 1: Grow from seed, invest in large roots and leaves, Year 2: They mature, produce seed and die. (ex.broadleave like thisle or burdock.
Perennial weeds
Life cycle is >2. Can sprout from seed or respout from existing roots/vegetation
