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All Journal Indonesian Fisheries Research Journal Aceh Journal of Animal Science
Moruf, Rasheed Olatunji
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology Physics Veterinary

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Growth dimension and DNA analysis of Bulinus snail from River Wudil, Kano State Nigeria Moruf, Rasheed Olatunji; Muhammad, Halima Abdullahi
Aceh Journal of Animal Science Vol 8, No 2 (2023): June 2023
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/ajas.8.2.30583

Abstract

The growth pattern and DNA yield and purity of Bulinus. globosus from River Wudil, Kano State, were investigated using standard methods. The mean ranges in mm from 7.92.9, 5.72.5, 4.81.8, 3.41.2, 1.50.2, 1.6 0.0, 2.4 0.2, 1.2 0.1, 1.4 0.1, 65.8 1.9 and 22.2 0.4 were recorded for length, width, aperture height, aperture width, height width ratio, height and aperture height ratio, height and aperture width ratio, width and aperture height ratio, aperture height and aperture width ratio, shell weight and flesh weight. About 33.7 % of weight of the snail is made up of flesh by weight. The value of b showed that B. globosus exhibited a negative allometric growth pattern while the correlation coefficient (r) in all the shell variables were below 1, indicating a weak correlation between the parameters. Mean DNA yield and purity were 120.03 5.10 ng/l and 1.81 1.21. The DNA yield in this study is well above the minimum standard and the pure extracts are good enough for further DNA analyses.
POPULATION DYNAMICS OF THE GRAY EEL CATFISH Plotosus canius FROM PORT DICKSON, MALAYSIA Usman, Binta Isyaku; Moruf, Rasheed Olatunji; Amin, S. M. Nurul; Arshad, Aziz
Indonesian Fisheries Research Journal Vol 30, No 1 (2024): (June) 2024
Publisher : Jakarta Technical University of Fisheries

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/ifrj.30.1.2024.%p

Abstract

Given the scarcity of information suitable for stock assessments of the Plotosidae, the study on growth and population dynamics of the Gray Eel Catfish Plotosus canius from the coastal waters of Port Dickson, Peninsular Malaysia was carried between January and December, 2021 and estimated using the ELEFAN I routine in FiSAT software. Estimated von Bertalanffy growth parameters were asymptotic length (Lāˆž) = 67.20 cm, growth coefficient (K) = 0.95 yr-1, Predicted extreme length (Lmax) = 63.54, and growth performance index (Ļ†ā€™) = 3.63. The estimated total mortality (Z) value was 2.73 yr-1 during the study period. Natural mortality (M) and fishing mortality (F) were estimated at 1.31 yr-1 and 1.42 yr-1 respectively. The value of exploitation rate (E) obtained for P. canius was 0.48. Two major recruitment events were observed per year and the recruitment pattern was continuous. The findings from the analyses suggested that the P. canius fishery in the study area is slightly below the optimum level of exploitation. However, more research is suggested in such direction to corroborate the present findings as management for this fish is indispensable for maximum sustainable yield. The length-structured virtual population analysis revealed that P. canius fishery of Port Dickson experiences growth overfishing as opposed to recruitment overfishing, with fishing mortality being higher than natural mortality (F>M). Based on these findings, small-sized mesh fishing net and reduced fishing efforts (legal and illicit) must be enforced in order to maintain the potential of this commercially significant species in Port Dickson, Malaysia
Co-Authors Amin, S. M. Nurul Aziz Arshad Muhammad, Halima Abdullahi Usman, Binta Isyaku