Editing Telson (section)

==Crustaceans==
In [[lobster]]s, [[Caridea|shrimp]] and other [[Decapoda|decapods]], the '''telson''', along with the [[uropod]]s, forms the '''tail fan'''. This is used as a paddle in the [[caridoid escape reaction]] ("lobstering"), whereby an alarmed animal rapidly flexes its tail, causing it to dart backwards. [[Krill]] can reach speeds of over 60&nbsp;cm per second by this means. The [[Induction period|trigger]] time to optical [[stimulus (physiology)|stimulus]] is, in spite of the low temperatures, only 55&nbsp;[[milliseconds]].

In the [[Isopoda]] and [[Tanaidacea]] (superorder [[Peracarida]]), the last abdominal body segment is fused with the telson, forming a "pleotelson".<ref>{{cite web |url=http://www.crustacea.net/crustace/isopoda/index.htm |title=Australian Isopoda: Families |author=S. J. Keable, G. C. B. Poore & G. D. F. Wilson |publisher=[[Australian Museum]] |date=October 2, 2002}}</ref>