Marconato and Bisazza, 1988



Citation


Marconato, A. and Bisazza, A. (1988) Mate choice, egg cannibalism and reproductive success in the river bullhead, Cottus gobio L. J. Fish Biol., pp. 905-916

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Cottus gobio Spawning conditions Mating system Males achieve multiple spawning in a relatively short period No category
Cottus gobio Spawning conditions Parental care The male fertilizes the eggs and guards them for about 4 weeks, during this time he fans the eggs almost constantly with his pectoral fins No category
Cottus gobio Spawning conditions Spawning substrate A mixture of sand and firly clean,fine to coarse gravel, with occasional large rocks Ambiguous
Cottus gobio Spawning conditions Spawning site preparation During the breeding season, the male excavates a cavity under a stone, the ripe female enters the nest and lay an egg mass on its ceiling No category
Cottus gobio Spawning conditions Spawning temperature 3-6 4.5 °C
Cottus gobio Spawning conditions Spawning period duration 8-9 8.5 weeks
Cottus gobio Spawning conditions Spawning water type Creek, stream No category
Cottus gobio Spawning conditions Spawning depth From 5 cm in riffles, to about 60 cm in pools, mostly less than 30 cm 5.0 m
Cottus gobio Female Age at sexual maturity 2-3 [Males] 2.5 years
Cottus gobio Female Oocyte development Asynchrony in oocyte development Asynchronous
Cottus gobio Egg Oocyte diameter > 1.8 [The oocytes of the their class, i.e. ripe oocytes ready to be spawned] 1.8 mm
Cottus gobio Female Absolute fecundity F= -183 + 6.4 L 183.0 thousand eggs
Cottus gobio Spawning conditions Spawning season Late February to Late April ['February', 'April']
Cottus gobio Larvae Temperature during larval development 10-12 11.0 °C
Cottus gobio Larvae Sibling intracohort cannibalism The occurrence of egg cannibalism in guarding male varied throughout the season and reached a maximum of 80% in the sample of 12 March Present
Cottus gobio Larvae Full yolk-sac resorption 150 [10-15 at 10-12°C] 12.5 °C * day
Cottus gobio Female Length at sexual maturity Most at 4-6 5.0 cm
Cottus gobio Male Length at sexual maturity Most at 5-7 6.0 cm
Cottus gobio Larvae Initial larval size ED= 0.4 L -0.75 (ed: egg diameter and L: length of the larvae) 0.4 mm
Cottus gobio Female Age at sexual maturity 2 [Both sex] 2.0 year
Cottus gobio Spawning conditions Spawning release Multiple spawning during the same breeding season Mutliple