Immunolocalization of serotonin in Onychophora argues against segmental ganglia being an ancestral feature of arthropods

• Published in: BMC evolutionary biology Vol. 7; no. 1; p. 118
• Main Authors: Mayer, Georg, Harzsch, Steffen
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 15.07.2007; BioMed Central; BMC
• Subjects: Animals; Annelida - anatomy & histology; Annelida - chemistry; Arthropoda; Arthropods - anatomy & histology; Arthropods - chemistry; Biological Evolution; Biology; Body Patterning - physiology; Cell Count; Chemical properties; Evaluation; Evolution; Fluorescent Antibody Technique, Indirect; Ganglia; Ganglia, Invertebrate - chemistry; Identification and classification; Invertebrates - anatomy & histology; Invertebrates - chemistry; Models, Biological; Natural history; Nervous System - anatomy & histology; Neurons - chemistry; Onychophorans; Phenetics; Phylogeny; Physiological aspects; Properties; Serotonin; Serotonin - analysis; Species Specificity; Australia; Germany

Onychophora (velvet worms) represent the most basal arthropod group and play a pivotal role in the current discussion on the evolution of nervous systems and segmentation in arthropods. Although there is a wealth of information on the immunolocalization of serotonin (5-hydroxytryptamine, 5-HT) in va...