title: Cupiennius salei and Achaearanea tepidariorum: Spider models for investigating evolution and development.
abstract: The spiders Cupiennius salei and Achaearanea tepidariorum are firmly established laboratory models that have already contributed greatly to answering evolutionary developmental questions. Here we appraise why these animals are such useful models from phylogeny, natural history and embryogenesis to the tools available for their manipulation. We then review recent studies of axis formation, segmentation, appendage development and neurogenesis in these spiders and how this has contributed to understanding the evolution of these processes. Furthermore, we discuss the potential of comparisons of silk production between Cupiennius and Achaearanea to investigate the origins and diversification of this evolutionary innovation. We suggest that further comparisons between these two spiders and other chelicerates will prove useful for understanding the evolution of development in metazoans.
authors.affiliation: Institute for Genetics, Evolutionary Genetics, University of Cologne, Köln, Germany.
authors.forename: Alistair P
authors.initials: AP
authors.lastname: McGregor
authors.forename: Maarten
authors.initials: M
authors.lastname: Hilbrant
authors.forename: Matthias
authors.initials: M
authors.lastname: Pechmann
authors.forename: Evelyn E
authors.initials: EE
authors.lastname: Schwager
authors.forename: Nikola-Michael
authors.initials: NM
authors.lastname: Prpic
authors.forename: Wim G M
authors.initials: WG
authors.lastname: Damen
mesh_terms: D000818:Animals; D005075:Biological Evolution; D019521:Body Patterning; D005260:Female; D008297:Male; D008957:Models, Genetic; D009420:Nervous System / Q000254:growth & development; D010802:Phylogeny; D047011:Silk / Q000096:biosynthesis / Q000235:genetics; D013112:Spiders / Q000145:classification / Q000196:embryology / Q000235:genetics* / Q000254:growth & development*
chemical_list: D047011:Silk