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Coprological Investigation of helminths parasitic infestations of Buffalo at haor and hilly bordered areas of Sylhet district in Bangladesh: Helminthes of Buffalo Siddiqui, Prof. Dr. Md. Saiful Islam; Mahtab, Jannatun Nayeem Hossain; Mamun, Mohammad Abdullah Al; Islam, Saiful; Hasan, Rakibul; Islam, MD. Nazrul; Begum, Sultana; Nasrin, Farhana; Paul, Tapan Kanti; Amin, S. M. Nurul
Veterinary Biomedical and Clinical Journal Vol. 7 No. 1 (2025): Vol. 7 No. 1 2025
Publisher : Faculty of Veterinary Medicine Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.VetBioClinJ.2025.007.01.5

Abstract

This study was designed and conducted with the aims to investigate the status of the parasitic infestations of buffaloes rearing in the Haor and bordered hilly areas of Sylhet district of Bangladesh as the ecology and the geographical facts are facilitating favorable conditions for parasites. Based on zoo-geography of different haor and hilly areas belongs to five Upazilla of Sylhet district were selected as study areas. A total 200 (40 samples from each Upazilla) fecal samples from randomly selected study buffalo based on considering survey findings, age, sex and seasons were collected and tested using direct smear method, floatation and McMaster egg counting techniques. Fascioliasis was the most prevalent (20.5%) parasitic infection, with an overall prevalence of 84.5%. The level of parasite infection varied throughout the five haor and adjacent areas of Sylhet; Jaintapur had the highest level (85%) and Zakiganj the lowest (65%). Out of the three helminth categories, Guwainghat had the highest prevalence of treamtaode (31.25%) and cestode (28.12%), while Kanaighat had the highest (51.72%) prevalence of nematode infection. Fascioliasis was most prevalent (46%) in adult buffaloes, while toxocariasis was highest in buffalo calves. Comparatively higher parasitic infection was seen in wet season (80.82%), followed by 61.25% in dry season.  It is concluded that, prevalence of helminthes parasite are much more higher in buffaloes in the haor and bordered hilly areas in Sylhet due to zoo-geographical facts, which to be seriously considered by the related authority and would formulate a specific helminthes control strategic plan for haor areas.
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 (L∞) = 67.20 cm, growth coefficient (K) = 0.95 yr-1, Predicted extreme length (Lmax) = 63.54, and growth performance index (φ’) = 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