Lab1.doc - 1 Lab 1 Fish morphology \u2013 the why and the how 1 Introduction to the lab and the UBC Beaty\/Fish Museum 2 Introduction to first tutorial

Lab1.doc - 1 Lab 1 Fish morphology u2013 the why and the...

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Lab 1: Fish morphology – the why and the how. 1. Introduction to the lab and the UBC Beaty/Fish Museum 2. Introduction to first tutorial paper 3. Why Study Morphology in the “Age of DNA”?? -taxonomy = the naming and classification of organisms -phylogeny = evolutionary history of a taxonomic group (genetics is also useful) -adaptations to the animals environment and life history -importance of definition and continuity 4. Basic Fish Morphology (you will need to know these terms in 4-8) -head, trunk, tail, peduncle -lateral line -dorsal, ventral, caudal -major fins (continuous, notched, or separate) -caudal (homocercal, heterocercal: truncate, indented, forked, lunate) -spiny and rayed portions -spines versus rays (rudimentary, principal rays) -maxillary, premaxillary, vomer -operculum, branchiostegals, gill rakers -scales or bony plates (placoid, ganoid, cycloid, ctenoid) 5. Morphometric Characters - measured in millimeters -total length (most anterior to end of natural or compressed caudal fin) -fork length or (from most anterior) -standard (from end of upper jaw) or max. standard (from most anterior)

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