Dynamics of Crustacean Larvae Composition and Abundance in Mesohaline Creeks of Lagos Lagoon, Nigeria | ||
| Egyptian Academic Journal of Biological Sciences, B. Zoology | ||
| Article 7, Volume 11, Issue 2, May 2019, Pages 99-110 PDF (1.06 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/eajbsz.2019.44517 | ||
| Authors | ||
| Olatunji Moruf1; oruf R. O.2; Amosu A. I.1; S. O. Sadiq1 | ||
| 1Department of Marine Sciences, University of Lagos, Akoka, Lagos State- Nigeria | ||
| 2Department of Fisheries and Aquaculture, Bayero University, Kano, Kano State- Nigeria | ||
| Abstract | ||
| The physicochemical flux, composition and abundance of crustacean larvae in two mesohaline creeks of Lagos Lagoon were investigated. The status of the Physico-chemical parameters indicates a non-significant difference between variables except Alkalinity with Abule-Eledu Creek having significantly higher mean value (144.4±2.2 mg/L) than Abule-Agege Creek (121.9±4.9 mg/L). The transparency values of the creeks increased with a reduction in the amount of rainfall while the water temperature as well as salinity values increased appreciably with the dry season. An increase in conductivity (>190.40 μS/cm) and salinity (>10.50‰) in the dry months for both creeks was also observed. The crustacean larvae were represented by five orders with Calanoida and Cyclopoida (Sub-Class: Copepoda) were the most frequent and notable orders occurring in Abule-Eledu and Abule-Agege creeks respectively. Other crustacean categories such as Mysida, Calanoida and Harpaticoida were also recorded. Total species diversity was14 in Abule-Eledu creek and 17 in Abule-Agege Creek. Shannon-Wiener Index values ranged between 0.90 and 0.96 for Abule-Eledu Creek and between 0.97 and 1.09 for Abule-Agege Creek. With the exception of Menhinick Index and Equitability Index, all other biotic indices were higher in Abule-Agege Creek than Abule-Eledu creek. This study therefore suggests that Calanoida and Cyclopoida which are orders of the subclass Copepoda are the dominant crustacean zooplankton group in the creeks of the Lagos Lagoon | ||
| Keywords | ||
| Crustacean; Water chemistry; Larvae; Abule-Agege Creek; Abule-Eledu Creek | ||
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