Incipient parental care in Discus - a plesiomorphic state of a truly endodontid character?

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ELZBIETA KUZNIK-KOWALSKA
BEATA M. POKRYSZKO
(2007)
Volume
39
Part
4
Page from
467

Discus rotundatus (0. F. Müller, 1774), D. ruderatus (Férussac, 1821) and D. perspectivus (Megerle von Mühlfeld, 1818) carry some of their eggs in the umbilicus. We interpret such behaviour as an incipient parental care which has reached its perfection in some Pacific endodontids.

Keywords
reproduction
Land snails
Discus
behaviour.