Biodiversity of Fishes Phylogeny and Remarkable Fishes Rainer
Biodiversity of Fishes Phylogeny and Remarkable Fishes Rainer Froese rfroese@geomar. de (26. 10. 2017)
Phylogeny of Fishes • Phylogeny – Classification based on common ancestry – Kingdom Animalia, Phylum Chordata
Phylogeny of Fishes • Phylogeny – Classification based on common ancestry – Kingdom Animalia, Phylum Chordata • Classes – Open www. Fish. Base. org, select Quick Identification: discuss Classes, click through to Families • Fishes in Time – Open Fish. Base, Fish. Base Book, Nomenclature, The Orders Table: discuss common ancestry, show relation to tetrapods, show poster and table (next slides)
Phylogeny of fishes Classes Common ancestor (million y) Orders (n) Myxini (hagfishes) 600 1 1 6 78 0. 2 Cephalaspidomorphi (lampreys) [Petromyzontida] 450 1 3 10 46 0. 1 Holocephali (chimaeras) [Chondrichthyes] 420 1 3 6 51 0. 1 Elasmobranchii (sharks and rays) [Chondrichthyes] 420 12 51 202 1, 180 3. 5 Sarcopterygii (lobe-finned fishes) 420 3 4 4 8 0. 04 Actinopterygii (ray-finned fishes) 400 46 487 4, 887 32, 168 95. 9 64 549 5, 115 33, 531 100 Total http: //www. fishbase. org/tools/Classification. Tree. php Families (n) Genera (n) Species (n, %) Fish. Base 11/2017
Remarkable Fishes Discuss: phylogeny, distribution, size, prey and predators, reproduction, growth, brain size, other traits. Myxine glutinosa Latimeria chalumnae Rhincodon typus Engraulis ringens Mola mola
Need To Know • Based on common ancestry, the 33, 000 known species of fishes are classified into 6 Classes, about 60 Orders and about 550 Families. • All fishes and tetrapods had a common ancestor about 600 million years ago; tetrapods (about 27, 000 species) split off from lobe-finned fishes about 400 million years ago. • Know the Classes of fishes and their main characteristics
Phylogeny of Fishes • Exercise – Select and explore some remarkable fishes based on information in Fish. Base – Present your findings
- Slides: 8