Insect Development Exoskeleton – Mouthparts – Reproduction – Entomology

Insect Development Cold blooded- development influenced by temperature Most insects inactive below 50 0 F; Breed, eat, develop faster the warmer it is up to 95 0 F.

Insects in the world Most successful animals Make up 2 out of three living things With other arthropods make up over 75% of all animals Have been around for 350 million years

Arthropods= Insects and their relatives Do not have a backbone(invertebrates) Jointed legged animals include; Ticks, mites,spiders,millipedes Centipedes, and insects

Exoskeleton Why do insects look so strange?

Exoskeleton Insect covered with hard outer shell Skin is very plastic like Difficult to sense environment

Cast skin of cicada < notice slit along back

Insect mouthparts-two types Chewing mouthparts Sucking mouthparts

<Piercing,sucking mouth parts Sucking mouthparts

Chewing mouthparts <chewing mouthparts

Insect reproduction 1.Short life cycles- most go through generation in 1- 6 weeks 2.Large number of offspring / female ,000 eggs

Insect reproduction Fruit flies- 2 week life cycle 26 generations/year 100 eggs / female Experiment

Insect Reproduction In 1 year from 1 male and 1 female if all offspring survive to breed would produce flies -

Amazing insect facts Larvae eat 3-4 times their weight / day in food Aphids can process 100 times weight in plant sap Some insects can survive being frozen solid