BIOL 111 Lecture Notes - Hyperglycemia, Pupa, Anterior Pituitary

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 111
• Professor: Irene Gregory- Eaves

Document Summary

Hormones = chemical messenger substance produced by endocrine system. Termite behavior and morphology differences is induced by hormones released because of the environment and pheromone cues. 4 groups: myriapod: millipedes and centipedes, chelicerates: spiders and mites and scorpions, crustaceans: dominant marine environment, hexapods: dominant in terrestrial environment, includes insects, myriapods: countess feet. 2 body regions: cephalothoraxes appendages, abdomen no appendages. Pairs of appendages: chelicerae fangs, pedipalps copulatory organs, pincers, walking legs (4 pairs, crustaceans: Dominant marine arthropods in freshwater and terrestrial environment. Head + thorax or cephalothorax + abdomen. Compose zooplankton important food source for fish: hexapods: Abundant in all enviros but deep sea. Thorax: 3 pairs of walking legs maybe wings. Unique to insects is their external mouthparts huge diversity for consumption/feeding. Herbivores, detritovores, fluid drinkers, predators, scavengers, parasites: ancestral multi-branched appendage, in crayfish = gas exchange, in drosophila = wings. Wings have been secondarily lost in some species.