The urosome of the Pan- and Peracarida

摘要: We have examined the caudal regions of diverse peracarid and pancarid malacostracans using light scanning electronic microscopy. The traditional view malacostracan posterior anatomy is not sustainable, viz., that free telson, when present, bears anus near base. either can occupy a terminal, sub-terminal, or mid-ventral position on telson; be located sixth pleomere – even telson present. Furthermore, there information might interpreted to suggest in some cases absent. Embryologic data indicates condition body terminus amphipods cannot easily characterized, though does appear at least transient seventh segment seems fuse with segment. Our understanding genesis so-called could subject alternative interpretations than those traditionally put forth.