Scaggiante, Marta; Rasotto, Maria Berica; Romualdi, Chiara - In: Behavioral Ecology 16 (2005) 6, pp. 1001-1007
We investigated whether mating behavior (sperm expenditure, courtship rate, and nest guarding) varied according to different levels of sperm competition in territorial males of two goby species, the grass and the black gobies. We measured sperm expenditure (sperm released after 30 min from the...