Parasitic trophonts of Oodinium attached to fish skin, from here.

Belongs within: Thoracosphaeraceae.

The Oodiniaceae are a group of dinoflagellates exhibiting an invasive parasitic stage (Fensome et al. 1993).

Characters (from Fensome et al. 1993): Parasitic trophont generally suboval to fusiform in outline, not exhibiting a typical dinoflagellate form; invasive organelle consisting of complex rhizoid-like absorptive structure; amphiesma usually pelliculate, occasionally tabulate. Reproduction by palintomic sporogenesis, with trophont detaching and its cytoplasm retracting from cell wall, dividing to produce numerous dinospores. Chromosomes decondensing during feeding stage, recondensing during palintomic sporogenesis. Cyst stage absent. Plastids occasionally present.

<==Oodiniaceae [Oodinidae]
    |--Crepidoodinium Lom & Lawlor in Lom 1981 FT93
    |--Amyloodinium Brown & Hovasse 1946 FT93
    |    `--A. ocellatum C-SC04
    |--Piscinoodinium Lom 1981 FT93
    |    `--P. pillulare (Sch├Ąperclaus 1954) Lom 1981 FT93
    |--Bargoniella Loeblich & Tappan 1961 (see below for synonymy) FT93
    |    `--*B. amylacea FT93 (see below for synonymy)
    `--Oodinium Chatton 1912 [incl. Branchiophilus Sch├Ąperclaus 1935] FT93
         |--O. cyprinodinium Lawler 1967 FT93
         |--O. fritillariae Chatton 1912 FT93
         |--O. ocellatum K-M02
         `--O. pouchetii (Lemmermann 1899) Chatton 1912 FT93

Bargoniella Loeblich & Tappan 1961 [=Salpicola Bargoni 1894 non Richiardi 1880 (ICZN)/Bargoni ex Farr et al. 1979 (ICBN)] FT93

*Bargoniella amylacea FT93 [=*Salpicola amylacea Bargoni 1894 LT64, Amyloodinium amylaceum FT93, Oodinium amylaceum (Bargoni) Chatton 1920 FT93]

*Type species of generic name indicated


[C-SC04] Cavalier-Smith, T., & E. E. Chao. 2004. Protalveolate phylogeny and systematics and the origins of Sporozoa and dinoflagellates (phylum Myzozoa nom. nov.) European Journal of Protistology 40: 185–212.

[FT93] Fensome, R. A., F. J. R. Taylor, G. Norris, W. A. S. Sarjeant, D. I. Wharton & G. L. Williams. 1993. A classification of living and fossil dinoflagellates. Micropaleontology Special Publication 7: i–viii, 1–351.

[K-M02] Klein-MacPhee, G. 2002. Porcupinefishes. Family Diodontidae. In: Collette, B. B., & G. Klein-MacPhee (eds) Bigelow and Schroeder’s Fishes of the Gulf of Maine 3rd ed. pp. 601–602. Smithsonian Institute Press: Washington.

[LT64] Loeblich, A. R., Jr & H. Tappan. 1964. Sarcodina: chiefly “thecamoebians” and Foraminiferida. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt C. Protista 2 vol. 1. The Geological Society of America and The University of Kansas Press.

No comments:

Post a Comment

Markup Key:
- <b>bold</b> = bold
- <i>italic</i> = italic
- <a href="http://www.fieldofscience.com/">FoS</a> = FoS