BIO325H5 Lecture Notes - Lecture 1: Wrasse, Dog Paddle, Batoidea
Document Summary
Creole wrasse, my favouritecaribbean reef fish, yellow-marked males with females in schools. Their odd swimming habit attracted my attention initially. The trajectory of the individual fishes within a school is a series of dips and rises". Westneat2004); they are considered relatively slow swimmers; they create their thrust with pectorals: wrasses, cichlids, damselfish, parrotfishes, many angelfish, butterfly fishes, goatfishes, surgeonfishesetc. : all emphasize pectorals in locomotion: this doesn"t mean they never use their tail fins etcand body waves: they emphasize pectoral fins, labriidaeis the family name of wrasses, the basis of the term labriformas a swimming mode. Pectoral fins: enlarged, thickened along anterior edge, tapering posteriorly becoming capable of. Rear" undulation; with a short base that forms a high angle with the main [body] axis ; the fin is shaped as a hydrofoilgiving different intensities of lift depending on its angle of attack.
