Determination of Morphometric Relationship and Condition Factors of Four Cichlids from Golinga Reservoir in Northern Region of Ghana | Science Publications

OnLine Journal of Biological Sciences

Francis Asumang¹  Daniel Nsoh Akongyuure¹  Elliot Haruna Alhassan¹ 

关键词: Cichlids;    Fisheries Management;    Length-Weight;    Condition Factor and Reservoir;   

DOI  :  10.3844/ojbsci.2015.201.206

学科分类：生物科学（综合）

来源: Science Publications

【 摘 要 】

Length-weight relationship and condition factor haveseveralapplications on fish biology, physiology, ecology and fisheriesassessment. A six-month study was conducted from November 2013 to April 2014 todetermine the length-weight relationship and condition factor of four majorcichlids namely Oreochromis niloticus (Nile tilapia), Hemichromis fasciatus(Banded jewelfish), Sarotherodon galilaeus (Mango fish) and Tilapiazillii(Red-belly tilapia) to fill a knowledge gap and provide useful informationfor fisheries management and conservation in the Golinga reservoir using thelength-weight based model. Samples were collected twice every month withgillnets from commercial fishermen. The length-weight relationship had a strongpositive correlation (r>0.8) for the four species. Oreochromis niloticusexhibited isometric growth (b = 3.07) whilst Hemichromis fasciatus (b =2.81), Sarotherodon galilaeus (b = 2.91) and Tilapia zillii (b =2.75) showed negative allometric growth. Mean condition factor (K)values were greater than one (3.66-4.88) for all the species and variedmonthly. The study provided new information on length-weight parameters for thefour cichlids.

【 授权许可】

Unknown