BIOTIC Species Information for Maja squinado
Researched byEmily Wilson Data supplied byMarLIN
Refereed byThis information is not refereed.
Reproduction/Life History
Reproductive typeGonochoristic
Developmental mechanismPlanktotrophic
Reproductive SeasonSummer - Autumn Reproductive LocationAs adult
Reproductive frequencyAnnual protracted Regeneration potential No
Life spanInsufficient information Age at reproductive maturity1-2 years
Generation timeInsufficient information Fecundity156,000 (Hartnoll, 1963)
Egg/propagule sizeInsufficient information Fertilization typeInternal
Larval/Juvenile dispersal potential1km-10km Larval settlement periodInsufficient information
Duration of larval stage2-10 days   
Reproduction Preferences Additional InformationMaturity 2 years in the Med (Hines et al., 1995). Main breeding season in south-west England between July - September (Lebour, 1927) and March - Sept in Ireland (Rodhouse, 1984). NE Atlantic in general, females bear eggs between March and October (Ingle, 1997). Time taken to reach the megalopa stage was reported to take ca 1 week in the laboratory (Lebour, 1927). In the Ría de Arousa, Spain, Maja squinado were reported to have moved up to 10.7 km within one month (González-Gurriarán & Freire, 1994). González-Gurriarán et al., (1993) estimated females to produce at least three consecutive broods during the yearly cycle. This is possible due to the storage of sperm which allows consecutive broods without the need for copulation before spawning (González-Gurriarán et al., 1996). In the UK and Ireland, only one brood is produced per yearly cycle (Rodhouse, 1984). In this species, the crabs do not moult again after becoming sexually mature i.e. the terminal moult is the pubertal moult.
Reproduction References González-Gurriarán & Freire, 1994, González-Gurriarán et al, 1996, Rodhouse, 1984, Lebour, 1927, Ingle, 1997, Hartnoll, 1963,
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