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Uropod
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Uropods are posterior appendages found on a wide variety of crustaceans. They typically have functions in locomotion.
Definition
[edit]Uropods are often defined as the appendages of the last body segment of a crustacean.[1] An alternative definition suggested by Frederick R. Schram restricts the term to those structures arising from the segment before the anal segment (the segment which carries the anus).[1] Under this latter definition, the appendages of the anal segment are caudal rami, which are analogous to uropods.[1]
Form
[edit]Uropods are typically biramous – comprising an endopod and an exopod. The exopod is typically the larger, and may be divided in two by a transverse suture known as the diaeresis.[2][3] The uropods may work in concert with the telson to form a "tail fan".[4]
References
[edit]- ^ a b c Claude Meisch (2007). "On the origin of the putative furca of the Ostracoda Crustacea". In Renate Matzke-Karasz, Koen Martens & Michael Schudack (ed.). Ostracodology – Linking Bio- and Geosciences: Proceedings of the 15th International Symposium on Ostracoda, Berlin, 2005. Developments in Hydrobiology 197. Vol. 585. Springer. pp. 181–200. doi:10.1007/s10750-007-0637-2. ISBN 9781402064173.
{{cite book}}:|journal=ignored (help) - ^ Dean Pentscheff (ed.). "Diaeresis". Crustacea Glossary. Natural History Museum of Los Angeles County. Archived from the original on August 16, 2007. Retrieved June 28, 2012.
- ^ S. S. Lal (2009). "Palaemon malcolmsonii". Practical Zoology: Invertebrate. Rastogi Publications. pp. 395–403. ISBN 978-81-7133-924-2.
- ^ Dean Pentscheff (ed.). "Uropod". Crustacea Glossary. Natural History Museum of Los Angeles County. Archived from the original on July 7, 2007. Retrieved June 28, 2012.