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  1. Fritillaria megachile Fol, 1872 - World Register of Marine Species

  2. House formation and feeding behaviour of Fritillaria borealis ...

  3. Fritillaria (tunicate) - Wikipedia

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    Fol ( 1872) described the external feeding structure of Fritillaria megachile as an extremely delicate, hollow vesicle, attached to the mouth of the organism. This structure was hardly visible unless the organism's tail undulated to inflate the structure by forcing water into the vesicle through an opening in its wall.
    All the species of Fritillaria mentioned above belong to the subgenus Eurycercus, which is characterised by a bi-partitioned tip of the tail, as distinct from the subgenus Acrocercus, which is characterised by a pointed or acuminated tail tip (Lohmann 1933; Fenaux 1993, 1998 ).
    Video-microscopy reveals that the common appendicularian Fritillaria borealis do so in a unique way. They live inside acellular, mucous houses, where their tail undulations act like a peristaltic pump in a close-fitting tail chamber to force water through a complex set of filters.
    Both live video sequences and still frames of such videos showed that most of the Fritillaria borealis organism was located within an acellular, mucous-like feeding structure, about 2 mm wide and of very complex organisation (Figs. 1, 2, 3 ).
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