EEB267H1 Lecture 6: Osteichthyes (bony fish): Lectures 6 and 7

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Eeb267 page 1 (type 1 collagen) (that"s why it"s heavy) (that"s why it"s not flexible) cartilage is extremely difficult to repair if it gets damaged. Eeb267 page 2 from migratory neural crest cells intramembranous bony armour cartilage hypertrophied chondrocytes. Eeb267 page 3 bone is not an apomorphy/synapomorphy for the bony fishes. Eeb267 page 6 (s. g. of their skeleton a little higher than 1. 1 b/c they have calcium salts deposited in their cartilage) benthic fish and fats are expensive to make. Eeb267 page 7 smelts bone doesn"t develop well under high pressure. Pelagic fish live near the surface or in the water column of coastal, ocean and lake waters, but not on the bottom of the the sea or the lake. The shape of the gas bladder is very species-specific. They won"t survive if they"re brought up to the surface--their gas bladder expands and pushes their stomach out of their mouths.

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