BIOTIC Species Information for Gobius cobitis
Researched byKaren Riley Data supplied byMarLIN
Refereed byProf. Robert Patzner
Reproduction/Life History
Reproductive typeGonochoristic
Developmental mechanismOviparous
Reproductive SeasonSpring and summer Reproductive LocationInsufficient information
Reproductive frequencyAnnual episodic Regeneration potential No
Life spanSee additional information Age at reproductive maturity1-2 years
Generation time3-5 years Fecundity2,000-12,000 eggs per female
Egg/propagule sizeInsufficient information Fertilization typeExternal
Larval/Juvenile dispersal potential>10km Larval settlement periodInsufficient information
Duration of larval stage11-30 days   
Reproduction Preferences Additional Information
  • The life span of Gobius cobitis is 10 years.
  • Gobius cobitis usually mature in their second year. Females usually produce 2 clutches of eggs each season for a further 8 years (Potts & Swaby, 1992). Eggs are laid by the female and attached to the under-surface of large boulders. The eggs are fertilized and guarded by the male. Gibson (1970) suggested that males fertilise and guard batches of eggs from at least two females and that spawning occurs twice during the breeding season. Thus the eggs are protected and kept inshore until the feeding larvae hatch.
  • The breeding season usually occurs in spring and early summer in Britain, but differences have been noted worldwide. For instance, reproduction takes place between March and May in Naples, and May to early July in Varna, the Black Sea. Fecundity was reported by Gibson (1970) to be dependent on size, and varies between 2,000 and 12,000 eggs per female. Hatching occurs approximately 22- 24 days after spawning at a temperature of 12-16 °C, and between 15 and 17 days after spawning at a temperature of 15-18 °C (Gil et al., 1997).
  • Gobius cobitis live for approximately 10 years (Potts & Swaby, 1992; Hayward et al., 1996). No difference in longevity has been noticed between sexes (Gibson, 1970).
Reproduction References Potts & Swaby, 1992, Gibson, 1970, Miller, 1986, Gil et al., 1997, Hayward et al., 1996,
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