Testes size seen through the glass of amphibian care

Abstract

Despite the great diversity of parental care types found in amphibians, studies linking them to post-copulatory sexually selected traits are scarce, presumably due to a lack of data. Valencia-Aguilar et al. used fieldwork and museum collections to show that paternal care appears to trade-off with testes size in glass frogs.

Keywords: paternal care; sexual selection; sperm competition risk; testes size; trait databases; weaponry.