Aggregata Siedleckii

''Aggregata'' is a genus of parasitic alveolates belonging to the phylum Apicomplexa.

Taxonomy

The organism found in the octopus was first named as ''Benedenia octopiana'' by Schneider in 1875. Since ''Benedenia'' was preoccupied, ''Eucoccidium'' was proposed as a replacement name by Lühe in 1903.
The genus ''Aggregata'' was named by Frenzel in 1885 for parasites in a crustacean.
These were later shown as two stages in the lifecycle of an identical organism by Léger and Duboscq.

This genus appears to be related to the adelinids and '' Hepatozoon'' but this needs confirmation.Kopecná J, Jirků M, Oborník M, Tokarev YS, Lukes J, Modrý D (2006) Phylogenetic analysis of coccidian parasites from invertebrates: search for missing links. Protist 157(2):173-183

Life cycle

The life cycle was determined in 1914. These parasites are heteroxenous, with two hosts in their life cycle. Sexual stages are found in the digestive tract of cephalopods and asexual stages infect the digestive tract of crustaceans.

The parasites undergo merogony and gametogony in the digestive tract and sometimes in the other tissues of the cephalopod. The oocysts may be passed in the stool or form within the tissues of the cephalopod. When the oocysts are ingested by a crustacean - frequently a crab - they decyst and infect the digestive tract of the crustacean. The life cycle is completed when the crustacean is eaten by a cephalopod.

Host records

*''Aggregata andresi'' - ommastrephid squid ('' Martialia hyadesi'')Gestal C, Nigmatullin Ch M, Hochberg FG, Guerra A and Pascual S (2005) ''Aggregata andresi'' n. sp. (Apicomplexa: Aggregatidae) from the ommastrephid squid ''Martialia hyadesi'' in the SW Atlantic Ocean and some general remarks on ''Aggregata'' spp. in cephalopod hosts. System Parasitol 60(1) 65-73
*''Aggregata bathytherma'' - '' Vulcanoctopus hydrothermalis''Gestal C, Pascual S, Hochberg FG (2010) ''Aggregata bathytherma'' sp. nov. (Apicomplexa: Aggregatidae), a new coccidian parasite associated with a deep-sea hydrothermal vent octopus. Inter-Research 91(3) 237-242
*''Aggregata dobelli'' - Giant Pacific octopus ('' Octopus dofleini martini'')Poynton SL, Reimschuessel R, Stoskopf MK (1992) ''Aggregata dobelli'' n. sp. and ''Aggregata millerorum'' n. sp. (Apicomplexa: Aggregatidae) from two species of octopus (Mollusca: Octopodidae) from the Eastern North Pacific Ocean. J Euk Micro 39(1) 248–256
*''Aggregata eberthi'' - common cuttlefish ('' Sepia officinalis'')
*''Aggregata kudio'' - '' Sepia elliptica''
*''Aggregata maxima'' - '' Sergestes robustus''
*''Aggregata millerorum'' - California two spotted octopus ('' Octopus bimaculoides'')
*''Aggregata octopiana'' - common octopus (''Octopus vulgaris'')Gestal C, Abollo E, Pascual S (2002) Observations on associated histopathology with ''Aggregata octopiana'' infection (Protista: Apicomplexa) in ''Octopus vulgaris''. Dis Aquat Organ 50(1):45-49
*''Aggregata patagonica'' - Southern red octopus ('' Enteroctopus megalocyathus'')Sardella NH, Ré ME, Timi JT (2000) Two new ''Aggregata'' species (Apicomplexa: Aggregatidae) infecting ''Octopus tehuelchus'' and ''Enteroctopus megalocyathus'' (Mollusca: Octopodidae) in Patagonia, Argentina. J Parasitol 86(5):1107-1113
*''Aggregata sagittata'' - European flying squid ('' Todarodes sagittatus'')Gestal C, Guerra A, Abollo E, Pascual S (2000) ''Aggregata sagittata'' n. sp. (Apicomplexa: Aggregatidae), a coccidian parasite from the European flying squid ''Todarodes sagittatus'' (Mollusca: Cephalopoda). Syst Parasitol 47(3):203-206
*''Aggregata vagans'' - '' Eupagurus'' species
*''Aggregata valdessensis'' - ''Octopus tehuelchus''

Synonyms

*''Aggregata duboscqi'' Moroff 1908 - ''Aggregata coelomica''
*''Aggregata frenzeli'' Moroff 1908 - ''Aggregata eberthi''
*''Aggregata mamillana'' Moroff 1908 - ''Aggregata eberthi''
*''Aggregata mingazzinii'' Moroff 1908 - ''Aggregata eberthi''
*''Aggregata minima'' Moroff 1908 - ''Aggregata eberthi''

References

{{Taxonbar, from=Q4692238

Apicomplexa genera