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Analysis of Length-Weight and Condition Factor of the Purple Lagoon Crabs GONIOPSIS PELII (HERKLOTS, 1851) from South West, Nigeria
Current Issue
Volume 5, 2017
Issue 5 (October)
Pages: 100-106   |   Vol. 5, No. 5, October 2017   |   Follow on         
Paper in PDF Downloads: 46   Since Oct. 18, 2017 Views: 1109   Since Oct. 18, 2017
Authors
[1]
Nicholas Eteobong, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria.
[2]
Aderonke Omolara Lawal-Are, Department of Marine Sciences, Faculty of Science, University of Lagos, Lagos, Nigeria.
[3]
Fola Matthews Omolara Opeyemi, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria.
Abstract
Crabs are chiefly marine, but some are terrestrial for long periods. True crabs are classified in the phylum Arthropoda. Crab are decapods crustaceans of the infra order Brachyura. The length-weight relationship of crabs is required to assess and analyse morphometric and meristic study of the crab specie, it is use for stock assessment model and this study assumes an important prerequisite in fishery biological investigations. The carapace length ranges from 2.2 – 5.2cm, while the carapace width ranges from 2.7 – 5.1cm. The total weight of the crab had a unimidal size group. The carapace width was grouped in three major group based on their sizes and composition: the small size which ranged from 2.7-3.6cm, the middle size ranged from 3.7 – 4.6cm and the large size ranged from 4.7 – 5.6 cm. The crab demonstrated a positive allometric growth. The condition factor (K) for the population studies showed an increase in total weight with increase in carapace width, indicating a general wellbeing of crab with a mean value of 3.64.
Keywords
Goniopsis pelii, Condition Factor, Crab, Length-Weight, Morphometric and Meristic
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