Reproductive biology of the blue crab, Callinectes amnicola (De Rocheburne) in the Lagos Lagoon, Nigeria

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dc.contributor.authorLawal-Are, A. O.
dc.date.accessioned2019-09-27T07:29:39Z
dc.date.available2019-09-27T07:29:39Z
dc.date.issued2009
dc.description.abstractSex ratio, fecundity, maturation development and oogenesis of Callinectes amnicola (De Rocheburne) in the Lagos Lagoon, Nigeria were investigated. The male/female ratio was 1:0.96. Fecundity estimates ranged between 478,400 and 4,480,500 eggs with a mean of 780,480 eggs. The diameter of the eggs varied between 0.25 and 0.35 mm with a mean of eggs 0.29 mm. A low positive correlation existed between fecundity and weight (r = 0.247) of the crab. Maturity was attained between 6.2 and 16.5 cm carapace width (CW) for the females and between 7.3 and 15.3 cm CW for the males. Fifty percent maturity (TL50) was attained at 10.8 cm CW in the males and 11.0 cm CW in the females. Five maturity stages of gonads were identified. Three major developmental stages of oocytes were observed. Immature and mature crabs were obtained in the lagoon throughout the year indicating that this species breeds throughout the year with a peak between March and June.en_US
dc.identifier.citationAuthors Aderonke Omolara Lawal-Are Publication date 2010/3/1 Journal Turkish Journal of Fisheries and Aquatic Sciences Volume 10 Issue 1 Pages 1-7. Cited by 27en_US
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/6170
dc.subjectsex ratioen_US
dc.subjectFecundityen_US
dc.subjectgonadal stagesen_US
dc.subjecthistologyen_US
dc.titleReproductive biology of the blue crab, Callinectes amnicola (De Rocheburne) in the Lagos Lagoon, Nigeriaen_US
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