''Orcheobius'' is a genus of parasitic alveolates of the
phylum
In biology, a phylum (; : phyla) is a level of classification, or taxonomic rank, that is below Kingdom (biology), kingdom and above Class (biology), class. Traditionally, in botany the term division (taxonomy), division has been used instead ...
Apicomplexa
The Apicomplexa (also called Apicomplexia; single: apicomplexan) are organisms of a large phylum of mainly parasitic alveolates. Most possess a unique form of organelle structure that comprises a type of non-photosynthetic plastid called an ap ...
.
[Schuberg &. Kunze (1906) Ein Coccidium aus ''Herpobdella atomariu'' Car. (Nephelis vulgaris Moq.-Tand.). Arch Protistenk 9, 382-429]
History
The genus was created by Schuberg and Kunze in 1906.
The genus ''Cariniella'' was synonymised with ''Orcheobius'' by Levine in 1980.
[Some corrections of coccidian (Apicomplexa: Protozoa) nomenclature. Levine, N. D (1980) J Parasitol 66 (5) 830-834 DOI 10.2307/3280679]
Taxonomy
There are two species known in this genus.
Description
The
oocyst
Apicomplexans, a group of intracellular parasites, have life cycle stages that allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organism ...
s have 25 or more
sporocysts.
Each sporocyst produces 4
sporozoite
Apicomplexans, a group of intracellular parasites, have life cycle stages that allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organis ...
s.
The
gamonts are elongated.
During syngny, four
microgamete
Different forms of anisogamy: A) anisogamy of motile cells, B) 283x283px
Anisogamy is a form of sexual reproduction">egg cell">oogamy (egg cell and sperm cell), C) anisogamy of non-motile cells (egg cell and spermatia).">283x283px
Anisogamy is ...
s associate with the
macrogamete
Different forms of anisogamy: A) anisogamy of motile cells, B) 283x283px
Anisogamy is a form of sexual reproduction">egg cell">oogamy (egg cell and sperm cell), C) anisogamy of non-motile cells (egg cell and spermatia).">283x283px
Anisogamy is ...
. One microgamete penetrates the macrogamete and the remaining three die off.
Host records
*''O. carinii'' - frog (''
Leptodactylus ocellatus
''Leptodactylus latrans'' is a species of frog in the family Leptodactylidae. It is native to much of South America east of the Andes, and Trinidad and Tobago. It has many common names, including ''rana criolla'', ''sapo-rana llanero'',Heyer, R. ...
'')
*''O. herpobdellae'' - leech (''
Herpobdella atomaria'')
References
Apicomplexa genera
{{Apicomplexa-stub