Two new cryptic and sympatric species of the king crab parasite Briarosaccus (Cirripedia: Rhizocephala) in the North Pacific

Zoological Journal of the Linnean Society
Christoph NoeverHenrik Glenner

Abstract

Rhizocephalan barnacles have been reported to parasitize a wide range of king crab species (Lithodidae). So far all these parasites have been assigned to a single species, Briarosaccus callosus Boschma, 1930, which is assumed to have a global distribution. Here we investigate Briarosaccus specimens from three different king crab hosts from the fjord systems of Southeastern Alaska: Lithodes aequispinus Benedict, 1895, Paralithodes camtschaticus (Tilesius, 1815), and Paralithodes platypus (Brandt, 1850). Using molecular markers and by morphological comparison we show that Briarosaccus specimens from these three commercial exploited king crabs are in fact morphologically distinct from B. callosus, and further represent two separate species which we describe. The two new species, Briarosaccus auratum n. sp. and B. regalis n. sp., are cryptic by morphological means and were identified as distinct species by the use of genetic markers (COI and 16S). They occur sympatrically, yet no overlap in king crab hosts occurs, with B. auratum n. sp. only found on L. aequispinus, and B. regalis n. sp. as parasite of the two Paralithodes hosts.

References

Feb 6, 1992·Nature·C W CunninghamL W Buss
Jun 19, 2001·Journal of Morphology·G Walker
Sep 30, 2004·PLoS Biology·Paul D N HebertCharles M Francis
Mar 17, 2006·The Journal of Parasitology·Andrey I ShukalyukSergey M Dolganov
Nov 30, 2006·Trends in Ecology & Evolution·David BickfordIndraneil Das
May 1, 2009·Molecular Ecology Resources·Tyler S ZemlakPaul D N Hebert
Mar 22, 2012·Journal of Invertebrate Pathology·Jeffrey D Shields
Jun 22, 2013·BMC Evolutionary Biology·Heather D Bracken-GrissomKeith A Crandall

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Datasets Mentioned

BETA
KR812147
KR812208
KR812178
KR812198
KR812157
KR812177
KR812199
KR812156

Methods Mentioned

BETA
PCR
dissection

Software Mentioned

eBiox
Lasergene SeqMan Pro
Dendroscope
MEGA
BioEdit

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