Clitellata | Haplotaxida
HÃ¤nninen, J. and I. Vuorinen. 2001. (Ref. 96236)
Size / Weight / Age
Climate / Range
Northeast Atlantic: Finland, Baltic Sea.
Members of the class Clitellata are copulating hermaphrodites. The clitellum, their distinctive feature from polychaetes, serves as a tool in reproduction. It secretes mucus for copulation and forms a cocoon where eggs and albumen are deposited. Life cycle: Zygotes develop in the cocoon and emerge as juveniles which later develop into adults (Ref. 833).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models