SEASONAL VARIATION IN MACRO-MICRONUTRIENT COMPOSITIONS OF THE FLESH AND SHELL OF THE PORTUNID CRAB Callinectes amnicola (De Rochebrune, 1883) FROM THE COASTAL WATERS OF SOUTHWEST NIGERIA

  • Rasheed Olatunji Moruf Department of Fisheries and Aquaculture, Faculty of Agriculture, Bayero University, Kano, Nigeria
  • Abdulwakil O. Saba Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
  • Joy Chukwu-Osazuwa Department of Ocean Science (Marine Biology Unit), Memorial University of Newfoundland, Canada
  • Isa O. Elegbede Environmental Resources Management, Brandenburg University of Technology, Cottbu-senftenberg, Germany
Keywords: Crab, Correlation, Lagoon, Mineral, Proximate

Abstract

Portunids are decapod crustaceans of high economic importance. Seasonal variation in macronutrient and micronutrients contents of Callinectes amnicola from three interconnecting lagoons were investigated using standard methods. The percentages of protein and moisture contents in the flesh were higher than that of the shell, while higher ash and nitrogen free extract were obtained in the shell. Crude fibres was not detected in flesh of C. amnicola but detected in shells with values ranging from 0.30 ±0.72 % (C. amnicola from Lagos Lagoon) to 0.55 ±2.15 % (C. amnicola from Badagry Lagoon). There were statistical differences (P ˂ 0.05) in crude fibre and carbohydrate levels of  the crab shell during wet and dry seasons while significant difference exist in protein level only in wet season. Protein showed negative correlations with all the minerals in crabs from Badagry and Epe Lagoons but positive correlation with all examined minerals in Lagos Lagoon crabs. The study demonstrated that Callinectes amnicola is rich in macro-micronutrients and characterized by low lipid content (< 3%). The nutrient biochemical constituents in the crab species vary with season

Author Biographies

Rasheed Olatunji Moruf, Department of Fisheries and Aquaculture, Faculty of Agriculture, Bayero University, Kano, Nigeria

Lecturer, Department of Fisheries and Aquaculture, Faculty of Agriculture, Bayero University, Kano, Nigeria

Abdulwakil O. Saba, Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia

Lecturer, Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia

Joy Chukwu-Osazuwa, Department of Ocean Science (Marine Biology Unit), Memorial University of Newfoundland, Canada

Department of Ocean Science (Marine Biology Unit), Memorial University of Newfoundland, Canada

Isa O. Elegbede, Environmental Resources Management, Brandenburg University of Technology, Cottbu-senftenberg, Germany

Environmental Resources Management, Brandenburg University of Technology, Cottbu-senftenberg, Germany

SEASONAL VARIATION IN MACRO-MICRONUTRIENT COMPOSITIONS OF THE FLESH AND SHELL OF THE PORTUNID CRAB Callinectes amnicola (De Rochebrune, 1883) FROM THE COASTAL WATERS OF SOUTHWEST NIGERIA

Published
2019-06-25
Section
Research articles