Squilla mantis
{{Short description|Species of crustacean}}
{{Speciesbox
| image = Squilla mantis - Naturmuseum Senckenberg - DSC02132.JPG
| image_caption = Squilla mantis
| taxon = Squilla mantis
| authority = (Linnaeus, 1758)
| synonyms = Cancer mantis Linnaeus, 1758
| synonyms_ref = {{cite WoRMS |author=WoRMS |year=2011 |title=Squilla mantis (Linnaeus, 1758) |id=136137 |access-date=November 25, 2011}}
}}
Squilla mantis is a species of mantis shrimp found in shallow coastal areas of the Mediterranean Sea and the Eastern Atlantic Ocean: it is also known as "pacchero" or "canocchia". Its abundance has led to it being the only commercially fished mantis shrimp in the Mediterranean.
Description
Individuals grow up to {{convert|200|mm|in|0}} long, and this mantis shrimp is of the spearer type.{{cite web |url=http://www.ucmp.berkeley.edu/arthropoda/crustacea/malacostraca/eumalacostraca/royslist/notes.html |title=External anatomy and explanatory notes |work=Roy's List of Stomatopods for the Aquarium |author=Roy Caldwell |access-date=August 26, 2007 |publisher=University of California Museum of Paleontology}} It is generally dull brown in colouration, but has two brown eye spots, circled in white, at the base of the telson.{{cite book |chapter-url=ftp://ftp.fao.org/docrep/fao/008/t0438e/T0438E45.pdf |chapter=Stomatopods |title=Field Guide to the Commercial Marine Resources of the Gulf of Guinea |publisher=FAO Regional Office for Africa |author=Wolfgang Schneider |pages=191 |year=1990 |isbn=92-5-103048-0 }}{{dead link|date=May 2018 |bot=InternetArchiveBot |fix-attempted=yes }} Other species – including smashers – are also sold in the aquarium trade as Squilla mantis.{{cite web |url=http://www.togar.de/English/aqua/mantis_shrimp.htm |title=Mantis shrimp |publisher=togar.de |access-date=August 26, 2007}}
Distribution and ecology
S. mantis digs burrows in muddy and sandy bottoms near the coasts of the Mediterranean Sea and adjacent warm parts of the eastern Atlantic Ocean.{{cite web |url=http://www.imv.uit.no/crustikon/Decapoda/Decapoda2/Species_index/Squilla_mantis.htm |title=Squilla mantis |work=Crustikon – Crustacean photographic website |publisher=Tromsø Museum – University of Tromsø |author=Cédric d'Udekem d'Acoz |year=2003 |archive-date=October 14, 2008 |archive-url=https://web.archive.org/web/20081014140035/http://www.imv.uit.no/crustikon/Decapoda/Decapoda2/Species_index/Squilla_mantis.htm |access-date=August 26, 2007}} It remains in its burrow during the day and comes out at night to hunt, and in the winter to mate.
It is found around the entire coast of the Mediterranean, and in the Atlantic Ocean south from the Gulf of Cádiz to Angola, as well as around the Canary Islands, and Madeira. It has historically been recorded from the Bay of Biscay and the British Isles, but is not known to occur there any more.{{cite journal |title=A review of the fisheries biology of the mantis shrimp, Squilla mantis (L., 1758) (Stomatopoda, Squillidae) in the Mediterranean |author=F. Maynou, P. Abelló & P. Sartor |journal=Crustaceana |volume=77 |issue=9 |year=2004 |pages=1081–1099 |doi=10.1163/1568540042900295}} It is particularly abundant where there is significant run-off from rivers, and where the substrate is suitable for burrowing. In the Mediterranean, the outflows from the Nile, Po, Ebro and Rhône provide these conditions.
The alpheid shrimp Athanas amazone often lives in the burrows of S. mantis, despite being of a similar size to other shrimp which S. mantis feeds on.{{cite journal |title=Association between Athanas amazone (Decapoda: Alpheidae) and Squilla mantis (Stomatopoda: Squillidae) |author=C. Froglia, R. James & A. Atkinson |journal=Journal of Crustacean Biology |volume=18 |issue=3 |year=1998 |pages=529–532 |doi=10.2307/1549417 |jstor=1549417}} The relationship between the two species remains unknown, although a second similar case has been reported for the species Athanas squillophilus in the burrows of Oratosquilla oratoria in Japanese waters.{{cite journal |title=A new species of the genus Athanas (Decapoda, Caridea, Alpheidae) living in the burrows of a mantis shrimp |author=K.-I. Hayashi |journal=Crustaceana |volume=75 |issue=3–4 |year=2002 |pages=395–403| doi=10.1163/156854002760095462}}
Fishery
File:Squilla mantis (l'Ametlla) brighter and quality.jpg market]]
S. mantis is the only native stomatopod to be fished for on a commercial scale in the Mediterranean. Over 7,000 t is caught annually, 85% of which is caught on Italian shores of the Adriatic Sea,{{cite web |url=http://www.fao.org/figis/servlet/TabLandArea?tb_ds=Production&tb_mode=TABLE&tb_act=SELECT&tb_grp=COUNTRY |title=Global Production Statistics 1950-2005 |publisher=Food and Agriculture Organization |access-date=August 26, 2007}} with further production in the Ionian Sea, off Sardinia, off the coast of Catalonia and off the Balearic Islands. Outside the Mediterranean, it is consumed in Andalusia in the Gulf of Cadiz under the name of "galeras".
References
{{Portal|Crustaceans|Arthropods}}
{{Reflist|32em}}
{{Taxonbar|from=Q1315250}}
{{Authority control}}
Category:Crustaceans of the Atlantic Ocean
Category:Commercial crustaceans