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TWO NEW SPECIES OF DICYEMID (DICYEMIDA: DICYEMIDAE) FROM TWO AUSTRALIAN CEPHALOPOD SPECIES: SEPIOTEUTHIS AUSTRALIS (MOLLUSCA: CEPHALOPODA: LOLIGINIDAE) AND SEPIOLOIDEA LINEOLATA (MOLLUSCA: CEPHALOPODA: SEPIADARIIDAE).
MedLine Citation:
PMID:  23020772     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Abstract Two new species of dicyemid parasites from Dicyema are described from 2 species of Australian cephalopods, i.e., Dicyema calamaroceum n. sp. from Sepioteuthis australis Quoy and Gaimard, 1832 (southern calamary) collected from Spencer Gulf (SG) and Gulf St Vincent (GSV), South Australia (SA), Australia and Dicyema pyjamaceum n. sp. from Sepioloidea lineolata Quoy and Gaimard, 1832 (striped pyjama squid) collected from SG, SA, Australia. Dicyema calamaroceum is a medium sized species that reaches approximately 2,400 µm in length. The vermiform stages are characterized by having 31-34 peripheral cells, a conical calotte, and an axial cell that extends to the propolar cells. An anterior abortive axial cell is absent in vermiform embryos and verruciform cells were not observed in nematogens and rhombogens. Infusoriform embryos consist of 39 cells; 2 nuclei are present in each urn cell and the refringent bodies are solid. Dicyema pyjamaceum is smaller than D. calamaroceum, with a body length that reaches approximately 1,950 µm. The vermiform stages are characterized by having 20-23 peripheral cells, a cap-shaped calotte that forms a cephalic swelling together with the parapolar cells, and an axial cell that extends to the propolar cells. An anterior abortive axial cell is absent in vermiform embryos. Verruciform cells and granules in propolar cells were observed in nematogens and rhombogens. Infusoriform embryos consist of 37 cells; 2 nuclei are present in each urn cell and the refringent bodies are solid. This represents the first description of dicyemid parasites from Australia.
Authors:
Sarah Roseann Catalano; Hidetaka Furuya
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-28
Journal Detail:
Title:  The Journal of parasitology     Volume:  -     ISSN:  1937-2345     ISO Abbreviation:  J. Parasitol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-10-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7803124     Medline TA:  J Parasitol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
a University of Adelaide, University of Adelaide.
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