The manca (plural: mancae) are post-larval juveniles in some crustaceans. The manca stage is the defining characteristic of a clade called Mancoida which comprises all the member of the Peracarida except the Amphipoda. Mancae closely resemble the adult form, but for the absence of the last pair of pereiopods. In some isopods, specifically the family Cymothoidae, the manca stage is a parasite of fish, and is also known as the praniza.
- Peter Ax (2000). "Peracarida". The Phylogenetic System of the Metazoa. Multicellular Animals 2. Springer. pp. 174–178. ISBN 978-3-540-67406-1.
- Albert O. Bush (2001). "Crustacea". Parasitism: the Diversity and Ecology of Animal Parasites. Cambridge University Press. pp. 226–241. ISBN 978-0-521-66447-9.
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