# Ceratoserolis

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{{Short description|Genus of crustaceans}}
{{Automatic taxobox
| taxon = Ceratoserolis
| image = USNM 1126718 (Ceratoserolis trilobitoides).jpg
| image_caption = ''[Ceratoserolis trilobitoides](/source/Ceratoserolis_trilobitoides)''
| authority = Cals, 1977<ref name="ITIS">{{ITIS |id=542064 |taxon=''Ceratoserolis'' Cals, 1977 |accessdate=February 21, 2011}}</ref>
}}

'''''Ceratoserolis''''' is a genus of [isopod](/source/isopod)s in the family [Serolidae](/source/Serolidae) from the [Southern Ocean](/source/Southern_Ocean) around Antarctica and some [Sub-Antarctic Islands](/source/Sub-Antarctic_Islands). They prefer to live on soft bottoms and range of least between {{cvt|24|and(-)|950|m|ft|-1}} in depth. They are superficially similar to the unrelated, extinct [trilobite](/source/trilobite)s (hence the specific name ''trilobitoides'' for the first described species) and reach up to about {{cvt|8|cm}} in length.<ref name=Wagele1986>{{cite journal | author=Wägele, J.-W. | year=1986 | title=Polymorphism and distribution of Ceratoserolis trilobitoides (Eights, 1833) (Crustacea, Isopoda) in the Weddell Sea and synonymy with C. cornuta (Studer, 1879) | journal=Polar Biol. | volume=6 | issue=3 | pages=127–137 | doi=10.1007/BF00274875 | s2cid=36870848 }}</ref><ref name=Held2003>{{cite journal | author=Held, C. | year=2003 | title=Molecular evidence for cryptic speciation within the widespread Antarctic crustacean Ceratoserolis trilobitoides (Crustacea, Isopoda) | journal=Antarctic Biology in a Global Context | isbn=90-5782-079-X }}</ref> They were once considered to be part of the genus ''[Serolis](/source/Serolis)'' and for a long time only ''Ceratoserolis trilobitoides'' was recognized. The validity of the other species has been disputed, but there are some [morphological](/source/Morphology_(biology)) and [genetic](/source/genetics) differences between them and  ''C. trilobitoides'', and there are indications that additional, currently unrecognized species of ''Ceratoserolis'' exist.<ref name=Wagele1986/><ref name=Held2003/><ref>{{cite book |editor=Alasdair McIntyre |year=2010 |title=Life in the World's Oceans: Diversity, Distribution, and Abundance |publisher=[John Wiley and Sons](/source/John_Wiley_and_Sons) |isbn=978-1-4051-9297-2 |author1=Julian Gutt |author2=Graham Hosie |author3=Michael Stoddart  |name-list-style=amp |chapter=Marine Life in the Antarctic |pages=203–220 |doi=10.1002/9781444325508.ch11 |chapter-url=https://books.google.com/books?id=Vlj1gfR7yzQC&pg=PA208}}</ref>

Because ''Ceratoserolis'' are widespread, locally abundant and relatively large for isopods, they have often been studied and used as [model organism](/source/model_organism) for the Antarctic region.<ref name=Held2003/> They are slow-maturing, only breed once in their life, and the eggs and young are brooded for an extended period—almost two years—in the female's [marsupium](/source/Brood_pouch_(Peracarida)). As is typical of Antarctic isopods, there is no pelagic larval stage.<ref name=Wagele1987>{{cite journal | author=Wägele, J.-W. | year=1987 | title=On the reproductive biology of Ceratoserolis trilobitoides (crustacea: isopoda): Latitudinal variation of fecundity and embryonic development | journal=Polar Biol. | volume=7 | pages=11–24 | doi=10.1007/BF00286819 | s2cid=23794037 }}</ref><ref name=Heilmayer2008>{{cite journal | author=Heilmayer, O. | author2=S. Thatje | author3=C. McClelland | author4=K. Conlna | author5=T. Brey | year=2008 | title=Changes in biomass and elemental composition during early ontogeny of the Antarctic isopod crustacean Ceratoserolis trilobitoides | journal=Polar Biol. | volume=31 | issue=11 | pages=1325–1331 | doi=10.1007/s00300-008-0470-8 | s2cid=6289689 | url=https://eprints.soton.ac.uk/51151/1/Heilmayer_PolarBiol_08.pdf }}</ref>

==Species==
There are four currently recognized species:<ref>{{cite web |author=Marilyn Schotte |year=2010 |title=''Ceratoserolis'' Cals, 1977 |editor1=M. Schotte |editor2=C. B. Boyko |editor3=N. L. Bruce |editor4=G. C. B. Poore |editor5=S. Taiti |editor6=G. D. F. Wilson |work=World Marine, Freshwater and Terrestrial Isopod Crustaceans database |publisher=[World Register of Marine Species](/source/World_Register_of_Marine_Species) |url=http://www.marinespecies.org/aphia.php?p=taxdetails&id=175145 |accessdate=February 21, 2011}}</ref>

*''[Ceratoserolis meridionalis](/source/Ceratoserolis_meridionalis)'' <small>([Vanhöffen](/source/Ernst_Vanh%C3%B6ffen), 1914)</small>
*''[Ceratoserolis pasternaki](/source/Ceratoserolis_pasternaki)'' <small>(Kussakin, 1967)</small>
*''[Ceratoserolis serratus](/source/Ceratoserolis_serratus)'' <small>(Brandt, 1988)</small>
*''[Ceratoserolis trilobitoides](/source/Ceratoserolis_trilobitoides)'' <small>(Eights, 1833)</small>

==References==
{{Reflist|30em}}

{{Taxonbar|from=Q3916250}}

Category:Serolidae
Category:Isopod genera

{{Sphaeromatidea-stub}}

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Adapted from the Wikipedia article [Ceratoserolis](https://en.wikipedia.org/wiki/Ceratoserolis) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Ceratoserolis?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.