Home News Archive - MPI for Ornithology Does parenting hamper the sex life of male black coucals? Publications of Peer Schmidt All genres Journal Article (1) Journal Article (1) 1999 Journal Article Weinzierl, R. P.; Schmidt, P.; Michiels, N. K.: High fecundity and low fertility in parthenogenetic planarians. Invertebrate Biology 118 (2), pp. 87 - 94 (1999) MPG.PuRe DOI