TY - JOUR
TI - Coccolithophorids in Polar Waters: Trigonaspis spp. Revisited
AU - Thomsen, Helge Abildhauge
AU - Østergaard, Jette Buch
TI - Coccolithophorids in Polar Waters: Trigonaspis spp. Revisited
AB - A group of weakly calcified coccolithophorid genera and species were described from polar regions several decades ago. In the interim period a few additional findings have been reported adding to the morphological and biogeographical databases of some of the species. The holococcolithophorid genus Trigonaspis is revisited here with the purpose of providing, based on additional sampling from both polar regions, an update on species morphology, life history aspects and biogeography. The genus Trigonaspis as currently circumscribed comprises four taxa – two from each polar region. The triangular plates of crystallites that cover the surfaces of both the tower-shaped flagellar pole coccoliths and the disc-shaped body coccoliths are the keystone features of the genus. Circumstantial evidence exists linking species of Trigonaspis with species of Pappomonas in haploid-diploid life cycles.
VL - 2015
IS - Volume 54, Issue 2
PY - 2015
SN - 0065-1583
C1 - 1689-0027
SP - 85
EP - 96
DO - 10.4467/16890027AP.15.007.2732
UR - https://ejournals.eu/en/journal/acta-protozoologica/article/coccolithophorids-in-polar-waters-trigonaspis-spp-revisited
KW - Coccolithophorid
KW - holococcolith
KW - Trigonaspis
KW - polar regions
KW - electron microscopy