Editing Apicomplexa (section)

===Gregarines===
[[File:Septate gregarine.jpg|thumb|right|100px|Trophozoite of a gregarine]]
{{Main|Gregarinasina}}
The gregarines are generally parasites of [[annelid]]s, [[arthropod]]s, and [[Mollusca|molluscs]]. They are often found in the [[Gut (anatomy)|gut]]s of their hosts, but may invade the other tissues. In the typical gregarine lifecycle, a [[trophozoite]] develops within a host cell into a schizont. This then divides into a number of [[merozoite]]s by [[schizogony]]. The [[merozoite]]s are released by lysing the host cell, which in turn invade other cells. At some point in the apicomplexan lifecycle, [[gametocyte]]s are formed. These are released by lysis of the host cells, which group together. Each gametocyte forms multiple [[gamete]]s. The gametes fuse with another to form [[oocyst]]s. The oocysts leave the host to be taken up by a new host.<ref>{{Cite journal |last1=Wong |first1=Wesley |last2=Wenger |first2=Edward A. |last3=Hartl |first3=Daniel L. |last4=Wirth |first4=Dyann F. |date=2018-01-09 |title=Modeling the genetic relatedness of Plasmodium falciparum parasites following meiotic recombination and cotransmission |journal=PLOS Computational Biology |volume=14 |issue=1 |pages=e1005923 |doi=10.1371/journal.pcbi.1005923 |pmid=29315306 |pmc=5777656 |bibcode=2018PLSCB..14E5923W |issn=1553-7358 |doi-access=free }}</ref>