ENVS 2210 Lecture Notes - Lecture 2: Pupa, Moulting, Femoral Head
24 Mar 2017
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Document Summary
Class insecta is further divided into subclasses: holometabola, hemimetabola, Honey bees are holometabolous insects because they pass through complete metamorphosis: they have 4 developmental stages, egg. Larva: pupa, adult, brood, the first 3 stages: egg, larva, pupa. It then hatches from the egg: the larva. Influences cell division and body differentiation: adult bee emerges by chewing through the cell capping. Location of the pollen brush and pollen rake: used to pack pollen or propolis pellets, hair. Indirect or fly muscles: longitudinal and dorso-ventral (vertical) muscles bend the thorax moving wings up and down, the abdomen, seven sub-segments, propodeum (attached to thorax, segments overlap with one another. In nurse bees, they produce 10-hydroxi-2-decenoic acid (lipid for larval food) In older workers, they produce 2-heptanone (alarm pheromone) Include 2 large ovaries composed of more than 150 ovarioles: capable of producing up to 2,000 eggs a day.
