Rock and partner shrimp

Rock and partner shrimp
	The partner shrimp Periclimenes yucatanicus
Systematics
Class :	Higher crabs (Malacostraca)
Order :	Decapods (decapoda)
Subordination :	Pleocyemata
Partial order :	Caridea
Superfamily :	Palaemonoidea
Family :	Rock and partner shrimp
Scientific name
	Palaemonidae
	Rafinesque , 1815

The rock and partner shrimp (Palaemonidae) are with about one hundred described genera the most diverse family of the crustacean suborder of the Caridea , to which most shrimp belong. The family is spread around the world. Most species occur in the sea from shallow water to depths of around 1300 meters, but some species have also successfully colonized freshwater habitats. Some species, especially within the partner shrimp, live in symbiotic relationships with other invertebrates.

features

The Palaemonidae have a large, laterally compressed and immobile rostrum with a maximum of 12 teeth. Your carapace does not have a continuous longitudinal seam. The telson has two or three pairs of thorns on the rear edge. The first pair of antennas has two completely separate flagella. The third to last limb of the second thoracic leg is not articulated.

Systematics

Within the family, two subfamilies and three monotypical genera not assigned to any subfamily are recognized.

Rock shrimp (Palaemoninae Rafinesque , 1815 )
Partner shrimp (Pontoniinae Kingsley , 1878 )
incertae sedis
- Calathaemon Bruce & Short , 1993
  - Calathaemon holthuisi ( Strenth , 1996)
- Climeniperaeus A. J. Bruce , 1996
  - Climeniperaeus truncoideus ( Chase & AJ Bruce , 1993)
- Cryphiops Dana , 1852
  - Cryphiops caementarius ( Molina , 1782)

Individual evidence

^ ^A ^b Edward David Edwards, J. Newland, L. Regan: Zoological catalog of Australia, Volume 31 . CSIRO Publishing, 2001, ISBN 978-0-643-05677-0 , pp. 288-289 .
↑ M. Schaefer: Brohmer - Fauna of Germany . 19th edition. Quelle and Meyer, Heidelberg 1994, ISBN 3-494-01225-3 , p. 522 .
^ Entry of the family at ITIS

Web links

Commons : Rock and Partner Shrimp (Palaemonidae) - Collection of images, videos and audio files

ITIS Palaemonidae Rafinesque, 1815

[Australia-1] A ^b Edward David Edwards, J. Newland, L. Regan: Zoological catalog of Australia, Volume 31 . CSIRO Publishing, 2001, ISBN 978-0-643-05677-0 , pp. 288-289 .

[Brohmer-2] M. Schaefer: Brohmer - Fauna of Germany . 19th edition. Quelle and Meyer, Heidelberg 1994, ISBN 3-494-01225-3 , p. 522 .

[ITIS-3] Entry of the family at ITIS