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dc.creatorEkanem, S.B.
dc.date.accessioned2019-01-24T11:09:45Z
dc.date.available2019-01-24T11:09:45Z
dc.date.issued2000
dc.identifier1696.pdf
dc.identifier.citationNAGA 23(2): 24-28
dc.identifier.urihttps://hdl.handle.net/20.500.12348/2408
dc.description.abstractBetween May and October 1990, fecundity, egg size and condition factor of Chrysichthys nigrodigitatus (Lacépède) in the Cross River, Nigeria, were studied. The fecundity (F) of this population varied from 3 046 eggs (total length, L=28.5 cm) to 28 086 eggs (L=64 cm). A mean relative fecundity of 231 eggs/cm or 13 eggs/g of fish was obtained for this population. The fecundity of this population can be estimated with the formula F=2.511 · L 2.30 or F=52.893 · W 0.78 , total length being in cm and weight (W) in g. The mean egg diameter of this population varied from 0.65 mm to 3.54 mm. Condition factor (CF) of the population varied from 0.24 to 1.34 with 0.977 as the mean; 52.8% had CF higher than the mean and 47% had CF above unity. Smaller fish in this population were in better condition than bigger ones. The egg size and condition factor obtained in this study are evidence that the Cross River population of C. nigrodigitatus can provide excellent broodstock.
dc.formatapplication/pdf
dc.languageEn
dc.publisherWorldFish
dc.rightsCC BY 4.0
dc.sourceNAGA
dc.titleSome reproductive aspects of Chrysichthys nigrodigitatus (Lacépède) from Cross River, Nigeria
dc.typeJournal Article
dcterms.bibliographicCitationEkanem, S.B. (2000). Some reproductive aspects of Chrysichthys nigrodigitatus (Lacépède) from Cross River, Nigeria. NAGA 23(2): 24-28
cg.coverage.countryNigeria
cg.coverage.regionAfrica
cg.identifier.worldfish1696
cg.subject.agrovocreproduction
cg.subject.worldfishbrood stocks
cg.contributor.affiliationUniversity of Calabar
cg.identifier.statusOpen access
cg.description.themeSustainable aquaculture


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