Journal
SYSTEMATIC PARASITOLOGY
Volume 60, Issue 1, Pages 65-73Publisher
SPRINGER
DOI: 10.1007/s11230-004-1385-6
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A new species of coccidian, Aggregata andresi, is described from the digestive tract of the flying squid Martialia hyadesi, an ommastrephid squid that lives in cold subantarctic waters in the Southwest Atlantic. Gamogonic and sporogonic stages were observed in the digestive tract of 96.5% studied hosts. Oocysts were ovoid to subspheroid in shape, 170-590 mum in length and 200-530 mum in width. Each oocyst contained approximately 45,000 sporocysts. Sporocysts measured 9.5-10 mum in length and 8-8.5 mum in width. The surface of the sporocyst wall was smooth and the cyst wall thick. Each sporocyst contained three sporozoites measuring 16-20 mum in length and 2-2.5 mum width. A. andresi is the second species of Aggregata to be reported from a nerito-oceanic cephalopod host.
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