Home News Archive - MPI for Ornithology Does parenting hamper the sex life of male black coucals? Publications of Kai Berthold All genres Journal Article (1) Journal Article (1) 1998 Journal Article Weinzierl, R. P.; Berthold, K.; Beukeboom, L. W.; Michiels, N. K.: Reduced male allocation in the parthenogenetic hermaphrodite Dugesia polychroa. Evolution: International journal of organic evolution 52 (1), pp. 109 - 115 (1998) MPG.PuRe DOI