ZOO 3700 Lecture Notes - Lecture 5: Zeidae, Bichir, Yellow Bullhead
20 Apr 2018
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Osteology: carp skeleton, major complexes, feeding, jaws, teeth, locomotion and habitat, caudal fins, pectoral fins, body shape/ proportions, other behaviour. Form and function: hypothesis, proximate ( how , ultimate ( why ) Protrusible upper jaw - means they are bottom feeders - this adaptation allows the mouth to extend to reach food particles or prey. Pectoral fins positioned forward and ventral in position. Dorsal fin extends over all or most of length of back. Advanced, specialized teleost because of less bones in the skull. Comment on the upper jaw - is it protrusible (like that of the carp?) yes but its fused. Comment on the position of the pelvics abdominal. Observe the bite which lies between the toothed tongue and the toothed bone of roof of mouth. Bite lies between tooth tongue and tooth bones of roof of mouth. Comment on the number of tooth bearing bones. Order perciformes comment on the reduced bone elements.
