IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page
Archaeperidinium saanichi sp nov.: a new species based on morphological variation of cyst and theca within the Archaeperidinium minutum Jörgensen 1912 species complex
Mertens, K.N.; Yamaguchi, A.; Kawami, H.; Ribeiro, S.; Leander, B.S.; Price, A.M.; Pospelova, V.; Ellegaard, M.; Matsuoka, K. (2012). Archaeperidinium saanichi sp nov.: a new species based on morphological variation of cyst and theca within the Archaeperidinium minutum Jörgensen 1912 species complex. Mar. Micropaleontol. 96-97: 48-62. dx.doi.org/10.1016/j.marmicro.2012.08.002
In: Marine Micropaleontology. Elsevier: Amsterdam; New York; Oxford; Tokyo. ISSN 0377-8398; e-ISSN 1872-6186, more
Peer reviewed article  
Available in  Authors 
Keywords
    Geological time > Phanerozoic > Geological time > Cenozoic > Quaternary
    Dinoflagellata [WoRMS]
    INE, Canada, British Columbia [Marine Regions]; INE, USA, California [Marine Regions]
    Marine/Coastal
Author keywords
    Dinoflagellate; Saanich Inlet; LSU rDNA; Single-cell PCR; Spiny browncyst; SSU rDNA
Authors  Top 
  • Mertens, K.N., more
  • Yamaguchi, A.
  • Kawami, H.
  • Ribeiro, S.
  • Leander, B.S.
  • Price, A.M.
  • Pospelova, V.
  • Ellegaard, M.
  • Matsuoka, K.
Abstract
    In this paper we describe a new species, Archaeperidinium saanichi sp. nov. within the Archaeperidinium minutum Jörgensen 1912 species complex. We examined the morphological variation of the cyst and motile stage by incubation experiments from sediment samples collected in coastal British Columbia (Canada), and compared it to closely related species. The theca of A. saanichi is differentiated from related species by overall size, the asymmetry of the intercalary plates and the right-sulcal plate (S.d.) not touching the cingulum. We provide a key to differentiate all closely related species. A. saanichi can be readily distinguished from A. minutum by a distinctively large cyst with a broad 2a type archeopyle and regularly spaced processes with relatively broad bases and aculeate process tips. Molecular phylogenetic analyses of large and small subunit (LSU and SSU) rDNA sequences demonstrated a close affinity of this species to A. minutum; however, the relatively high level of sequence conservation in dinoflagellate rDNA sequences made these particular markers inadequate for distinguishing one species from the other. Sediment-trap data suggest that A. saanichi has a preference for cooler temperatures and lowered salinities.
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors