View source for Biology:Saduria entomon

{{Short description|Species of crustacean}}
{{Speciesbox
| image = SaduriaEntomonMain.jpg
| image_caption = Dead ''Saduria entomon'' washed up on the beach
| status = LC | status_system = IUCN3.1
| status_ref = <ref>{{cite web | title =Species Information Sheet: ''Saduria entomon'' |website=HELCOM Red List Benthic Invertebrate Expert Group | year = 2013 | url = http://helcom.fi/Red%20List%20Species%20Information%20Sheet/HELCOM%20Red%20List%20Saduria%20entomon.pdf | access-date = 17 May 2016}}</ref>
| taxon = Saduria entomon
| authority = ([[Biography:Carl Linnaeus|Linnaeus]], [[Biology:10th edition of Systema Naturae|1758]])&nbsp;<ref name="itis">{{ITIS |taxon=''Saduria entomon'' (Linnaeus, 1758) |id=92646 |access-date = February 1, 2006}}</ref><ref name=WoRMS/>
| synonyms = ''Oniscus entomon'' <small>Linnaeus, 1758</small><br />
''Mesidotea entomon'' <small>(Linnaeus, 1758)</small><ref name=WoRMS/>
}}

'''''Saduria entomon'''''  is a [[Earth:Benthos|benthic]] [[Biology:Isopoda|isopod]] [[Biology:Crustacean|crustacean]] of the family [[Biology:Chaetiliidae|Chaetiliidae]].<ref name="itis"/><ref name=WoRMS/> It is distributed along the coasts of the [[Earth:Arctic Ocean|Arctic Ocean]] and of the northern [[Earth:Pacific Ocean|Pacific Ocean]]. It is also found in the brackish [[Place:Baltic Sea|Baltic Sea]], where it is considered a glacial [[Biology:Relict|relict]].<ref name="aquascope"/> Moreover, it is present in a number of North European lakes, including [[Earth:Lake Ladoga|Ladoga]], Vänern and Vättern. It has been [[Earth:Introduced species|introduced]] into the Black Sea.<ref>{{cite journal |author=Y. Kvach |year=2009 |title=First report of ''Saduria'' (''Mesidotea'') ''entomon'' (Linnaeus, 1758) (Isopoda: Chaetiliidae) in the Black Sea |journal=Aquatic Invasions |volume=4 |issue=2 |pages=393–395 |url=http://www.aquaticinvasions.ru/2009/AI_2009_4_2_Kvach.pdf |doi=10.3391/ai.2009.4.2.17|doi-access=free }}</ref>

''Saduria entomon'' is one of the largest crustaceans in the Baltic Sea. The largest ones are found in the depths of the Gulf of Bothnia,<ref name="portal">{{cite web|url=http://www.itameriportaali.fi/fi/tietoa/sanakirja/fi_FI/kilkki/|title=Kilkki|language=Finnish|author=|date=|work=The Baltic Sea Portal|publisher=|access-date=20 June 2010|archive-url=https://web.archive.org/web/20110719235856/http://www.itameriportaali.fi/fi/tietoa/sanakirja/fi_FI/kilkki/|archive-date=19 July 2011}}</ref> reaching a maximum length of nearly {{convert|9|cm|in|0|abbr=on}}.<ref name="aquascope"/> ''S. entomon'' are sexually dimorphic, with males growing larger and maturing at larger sizes than females.<ref name=haahtela/> Most individuals die after reproduction, and the species might be functionally [[Biology:Semelparity and iteroparity#Semelparity|semelparous]], but it is probably capable of [[Biology:Semelparity and iteroparity#Iteroparity|iteroparity]]. Its lifespan is 3 years, possibly much longer.<ref name=haahtela>{{Cite journal| volume = 27| pages = 269–278| last = Haahtela| first = Ilpo| title = What do Baltic studies tell us about the isopod ''Saduria entomon'' (L.)?| journal = Annales Zoologici Fennici| year = 1990| url = http://www.sekj.org/PDF/anzf27/anz27-269-278.pdf}}</ref>

''Saduria entomon'' is a [[Earth:Predation|predator]] that feeds on other benthic animals, such as ''Monoporeia affinis''. It is also a [[Earth:Scavenger|scavenger]] and a [[Biology:Cannibalism|cannibal]].<ref name="aquascope">{{cite web |url=http://www.vattenkikaren.gu.se/fakta/arter/crustace/isopoda/saduento/saduene.html |title=''Saduria entomon'' |author= |date= |work=Aquascope |publisher= |access-date=20 June 2010}}</ref>

==References==
{{Reflist|refs=
<ref name=WoRMS>{{cite WoRMS |author=Guiry, Michael D. |year=2009 |title=''Saduria entomon'' (Linnaeus, 1758)  |id=119034 |access-date=17 May 2016 |db=Isopoda}}</ref>
}}

{{Taxonbar|from=Q1590206}}

[[Category:Valvifera]]



{{Sourceattribution|Saduria entomon}}