Polyandry in animals
overview about Polyandry in nature
Another example is in those fish which store sperm for months. This tends to set up a kind of fitness competition between sperm. The system is called "cryptic sperm competition".
Male "pregnancy" is found in seahorse, pipefish and sea dragons.
- Andersson M. 2005. Current Issues – Perspectives and Reviews. Evolution of classical polyandry: three steps to female emancipation. Ethology 23, 1–24.
- Jones, a G., Walker, D. & Avise, J. C. Genetic evidence for extreme polyandry and extraordinary sex-role reversal in a pipefish. Proceedings: Biological Sciences 268, 2531–5 (2001).