Publication Title Are zooplankton useful indicators of ecological quality in Afrotropical ephemeral stream impacted by human activities?
Publication Type journal
Publisher Springer Link
Paper Link https://doi.org/10.1007/s10661-022-10061-4
Publication Authors Augustine Ovie Edegbene, Yasir Abdullahi, Frank Chukwuzuoke Akamagwuna, Efe Ogidiaka, Ekihkalo Catherine Osimen & Blessing Odafe Omovoh
Year Published 2022-05-02
Abstract Ephemeral river systems in Nigeria are under severe threat by increasing anthropogenic pollution. However, little is known about the ecological health of ephemeral rivers in Afrotropical regions, especially Nigeria. It is also unclear how zooplankton communities respond to anthropogenic stressors in ephemeral rivers in the African continent. In this study, we explored the responses of zooplankton to environmental indicators of human activities to assess the health of River Kafin Hausa, an ephemeral river system in north-western Nigeria. Our specific objectives were to explore the response patterns of zooplankton communities to anthropogenic pollution in the north-western ephemeral rivers and examine their potential use as reliable indicators for long-term monitoring of ephemeral systems impacted by different human activities. We collected zooplankton and physicochemical variables from three sites in five months, from January to February and April to June 2018. One-way ANOVA showed air temperature, water temperature, pH, salinity, BOD5, phosphate and nitrate varied significantly (p?
Publication Title Length-Weight relationships of some economic freshwater fishes of Nwaniba River, Southeast Nigeria Download PDF
Publication Type journal
Publisher International Journal of Fisheries and Aquatic Studies 2016; 4(5): 233-236
Publication Authors Esenowo IK, Ogidiaka E and Brownson II
Year Published 2016-06-06
Abstract The length-weight relationships of some economic freshwater fishes were analyzed in Nwaniba River, Southern Nigeria. Fish specimens were procured from middlemen at the landing site from January to June, 2014. The mean total length and weight were 15.76 cm and 78.39g respectively. The highest (3.512) and lowest (1.503) “a” value was recorded for Hemichromis fasciatus and Oreochromis niloticus respectively, while the “b” value ranged from 2.78 and 3.54. The mean condition factor ranged from 1.818 and 2.351. The result obtained in this study showed both negative and positive allometric growth pattern.
Publication Title Comparative Studies of the Growth Characteristics of Macrobrachium macrobrachion and Macrobrachium vollenhovenii in Forcados River Estuary, Niger Delta, Nigeria Download PDF
Publication Type journal
Publisher International Journal of Scientific Research in _______________________________ Research Paper . Multidisciplinary Studies
Publication Authors E. Ogidiaka1*, B. O. Bekederemo2, J. Atadiose3
Year Published 2018-09-09
Abstract This study presents data on the growth characteristics of two important shrimps Macrobrachium macrobrachion and Macrobrachium vollenhovenii found in Forcados river estuary in Niger delta Nigeria. The parameters ‘a’ and ‘b’ of the length-weight relationship of M. macrobrachion were 0.97 and 2.15 for immature, 1.99 and 2.68 for female and 1.30 and 2.52 for male respectively while that of M. Vollenhovenii were 1.93 and 0.88 for immature, 1.91 and 0.86 for female and 1.07 and 0.712 for male respectively. Growth exhibited a negative allometric growth pattern for both species. The condition factor k was 9.83, 0.702 and 0.699 for immature, male and female respectively. The length-weight relationship parameters of M. macrobrachion and M. Vollenhovenii in Forcados River estuary revealed a strong association between the length and weight while the condition factor showed that the prawns were in good condition.
Publication Title FISH FAUNA COMPOSITION, ABUNDANCE AND DISTRIBUTION OF FORCADOS RIVER ESTUARY Download PDF
Publication Type journal
Publisher International Journal of Biological Innovations
Paper Link https://doi.org/10.46505/IJBI.2021.3115
Publication Authors 1* Ogidiaka Efe and Ikomi Robert Bemigho
Year Published 2021-09-09
Abstract This study was carried out to determine the fish fauna composition, abundance and distribution of Forcados river estuary. The monthly fish samples were collected for 24 months between April, 2016 and March, 2018, by using dragnet of stretched mesh sizes 6 mm, 15 mm and 25 mm, gill net and hand net through the services of motorised local artisanal fishers. A total of twelve thousand seven hundred and eighty fishes belonging to 18 families, 27 genera and 34 species were collected. Artisanal fishers should be educated on the importance of sustainable fishing practice to encourage the conservation of fishes in the estuary