Frogs of this genus generally deposit eggs directly in surface waters, and adults provide no noticeable care of the young. This lack of adult parental care separates the genus Disglossus from sister genus Alytes; in particular, species within genus Alytes demonstrate female deposition of eggs that become attached to hindlegs of the adult males, who subsequently carry them prior to depositing the eggs in water (Salvador, 1996).
The age of sexual maturity varies greatly among species within the genus, with rapid maturity of one year for D.. scovazzi to as much as five years for D. galganoi males. Copulation detail has been documented only for some of the species, but is thought that it is generally by terrestrial amplexus. Mating system is polyandrous, with a female mating with a number of males, even within a single breeding season.
Each female can produce up to 4000 to 6000 eggs per season, typically in multiple clutches, with a clutch size of 300 to 1500 eggs. The eggs are laid singularly or in small clumps either (a) on aquatic vegetation or (b) in the benthic zone of the water column (sometimes eventually floating on the water surface). An individual egg is typically about 1.5 to 2.0 millimeters in diameter, within a gelatinous envelope around four times the diameter of the egg itself. In many instances the gelatinous envelopes cling together in a loose mass.
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