Macroinvertebrate Fauna Of A Tropical Freshwater Stream In Nigeria

Ibemenuga, Keziah Nwamaka; Inyang, Nicholas Mathias

doi:10.4314/ari.v3i3.40791

Cited by 11 publications

(10 citation statements)

References 7 publications

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“…and aquatic macrophyte provided different microhabitats for the diverse groups of the fauna. Organisms cannot survive without adequate food for the organisms' survival and growth (Ibemenuga and Inyang, 2006). The account of dominant taxa which include Ephemeroptera and Diptera in this study have been in the documentation by Ogbeibu and Orihabor (2002) at Ikpoba River ; Olomukoro and Ezemonye (2006) in assessment of the macro-invertebrate fauna of rivers in southern Nigeria; Olomukoro and Azubuike (2009) at Ekpan Creek, Warri.…”

Section: Discussionmentioning

confidence: 99%

“…Physico-chemical, geomorphic and biotic characteristic of the aquatic ecosystem are the most significant factors influencing the species composition, abundance and distribution of aquatic benthic macroinvertebrates (Ibemenuga and Inyang, 2006). Bishop (1973) and Dance and Hynes (1980) asserted that water quality and abundance of nutrient were the major factors governing the abundance and distribution of benthic macroinvertebrates fauna in aquatic environment.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of Benthic Macro-Invertebrates of Freshwater Ecosystem: A Case Study of Ovia River (Iguoriakhi), Edo State, Nigeria

Iyagbaye

Omoigberale

2017

ESJ

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In this study, the diversity and seasonal variation of benthic macroinvertebrates of Ovia River (Iguoriakhi), Edo State, Southern Nigerian, were studied between July, 2014 and February, 2015. Four stations were selected and sampled monthly and investigated for benthic macro-invertebrates' community structure using basic statistical measurement of abundance and diversity indices to characterize the benthic macro-invertebrates. The species richness, evenness and diversity of the benthic macro-invertebrates in the study area were high and typical of a tropical fast-flowing freshwater river. There was a total of 45 taxa, made up of 1,135 individuals; 10 Ephemeroptera, 10 Diptera, 7 Coleoptera, 7 Odonata, 4 Hemiptera, plasiopora, Haplotaixa, Decapoda, Hydrachnellae, Lepidoptera, Gastropoda, and Trichoptera were represented with a taxa each. The dominant taxa include Ephemeroptera, while the Diptera was the only sub-dominant order identified. Analysis of Variance (ANOVA) revealed that the overall density was significantly different (P<0.05) in the study stations. A posteriori Duncan Multiple Range (DMR) test indicated that the abundance of Dipterans and Ephemeropterans at station 2 and 4 respectively were the source of the significant difference. The EPT to total ratio indicated that the water quality of all the studied stations were nonimpacted. The study concluded that benthic macro-invertebrates are good candidate and less expensive indices for water quality monitoring.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Assessment of Benthic Macro-Invertebrates of Freshwater Ecosystem: A Case Study of Ovia River (Iguoriakhi), Edo State, Nigeria

Iyagbaye

Omoigberale

2017

ESJ

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“…Grab samples and direct sediments samples were initially washed on deck through sieves of 0.5 mm mesh and the retained materials were preserved in 4% formalin for further sorting in the laboratory. The identification of the species was according to taxonomic keys provided in Quigley (1977), Atobatele et al (2005) and Ibemenuga and Inyang (2006).…”

Section: Collection Of Biological Samplesmentioning

confidence: 99%

Plankton and Macrobiota Composition and Diversity of Three Tropical Freshwaters Rivers in Ogun and Ondo States, Southwest Nigeria

2016

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Three different rivers in Ogun and Ondo states were investigated for both micro and macro-biota of the water bodies. Several physical and chemical properties of these rivers were determined. The pH value of the studied water bodies was essentially neutral with salinity values between 0.02 - 4.0‰. Microalgae communities were represented by three divisions: Cyanophyta, Bacillariophyta and Chlorophyta at Oluwa and Ifara Rivers (Ondo state), while at Ibefun River (Ogun state), five divisions: Cyanophyta, Bacillariophyta, Chlorophyta, Euglenophyta and Pyrrhophyta were identified. Diatoms dominated these water bodies, with Navicula radiosa Kutz. at Ifara River, Fragilaria sp. in Oluwa River, while out of 90 algal taxa identified in Ibefun river, 64 were diatoms species belonging to 26 genera, with Melosira sp. and Synedra sp. recording the highest numbers of cell count. Dinoflagellates recorded only Peridinium sp. while Phacus orbicularis Hubner and Trachelomonas sp. dominated the euglenoids. For the zooplankton composition at Ibefun, rotifers (75.95%) were represented by Brachionus sp., which recorded 62.03%, and Gastropus sp. with 13.92% of the total zooplankton, thus dominated the spectrum, while the copepod recorded 22.78% of the total organisms, with Copilia sp. and Euchirella sp. having 8.86% each. The macrobenthic invertebrates were represented by 3 taxa, belonging to 3 groups, with the dominant group Insecta accounted for 57% of the total individuals (7 individuals/m2), while Oligochaeta and Hirudinea accounted for 29% and 14% respectively of the total individuals at Oluwa and Ifara Rivers. At Ibefun River, the macrobenthic invertebrates were represented by 5 taxa, belonging to 3 groups, Bivalves, Oligochaeta and Insecta, with bivalves being the dominant group (51.7% of the total individuals, as 64 individuals/m2), while Oligochaeta and Insecta accounted for 26.6% and 21.9% respectively of the total individuals. The dominant taxon, Macoma cumana, accounted for 42.2%. A total of seventeen (17) finfish and shellfish species comprised of thirteen (13) finfish and four (4) shellfish species were recorded, being representative of freshwater and brackish water species; Clarias anguillaris (Clariidae), Tilapia zilli (Cichlidae), Chrysichthys nigrodigitatus (Bagridae), Alestes spp. and Macrobrachium vollenhovenii (Palaemonidae) were the most common species observed.

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“…Bio-indicators have been employed through the availability and unavailability of sensitive species abundance or composition due to the influence of pollution and human disturbance [10] . In addition to that, some macroinvertebrate families such as Trichopterans like high quality water with less pollution and can therefore be used to trace pollutants [11] . This is highly recommended especially in developing countries where resources to monitor stream health are limited.…”

Section: Introductionmentioning

confidence: 99%

Macroinvertebrates as bio-indicators of water quality in Omubira Stream, in Kakamega County, Kenya

Mzungu¹,

Yakub²,

Anyimba³

2022

Int. J. Fish. Aquat. Stud.

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Human-induced environmental stress can impair freshwater ecosystems by destroying them or altering them in negativeways. Laws and ordinances that stress Kenya's water resources' correct management and utilization were prompted by worries about the management of freshwater bodies. Therefore, understanding of the health status of aquatic environments, particularly their biodiversity, is crucial in order to comprehend the status of water quality and limit the rate of pollution in our streams and rivers. Several well-known biological markers of water quality can be used for this. Bio-indicators are species or groups of species that can quickly reveal the abiotic or biotic condition of an environment, show how environmental change has affected a habitat or ecosystem. In many industrialized nations, including those in Europe and North America, macroinvertebrates are widely utilized as bio-indicators and are part of their national and technical standards for water quality monitoring. Their use is still relatively restricted in developing nations like Kenya. Furthermore, the use of aquatic macroinvertebrates as bioindicators of water quality to assess the condition of aquatic ecosystems is not stressed by Kenyan environmental laws and regulatory bodies. This can be because the nation doesn't have a well-known and established biomonitoring system. However, only a small number of studies have begun utilizing macroinvertebrate species as bio-indicators at this time. A greater comprehension of the macroinvertebrate variety of the Omubira River could help in the stream management due to continued municipal and agricultural activities along this river. As a result, this study examined the use of macroinvertebrates as bio-indicators of river water quality and determined how they reacted to water quality in the various region of the stream. Macroinvertebrates and selected physicochemical variables were sampled monthly in four sites for a period of four months. On each sampling sites at every sampling episode physicochemical variables including temperature, conductivity, salinity, turbidity, pH, dissolved oxygen and percentage saturation oxygen were measured using a Hydrolab Quanta Multi-Probe Meter. A Surber sampler of an area 1200 cm 2 and corer sampler were used with catching area of 20.83 cm 2 to capture macroinvertebrates. There was a general decrease of Temprature, turbidity, salinity, conductivity and pH from the town area to the forested area. However, dissolved oxygen increased from the town area to forested area. A general variation of macroinvertebrates species from manucipal area to forested area in the river was observed. The highest abundance of Belostomatidae (16.87), Chironomidae (16.77), Naididae (14.07) and Gomphidae (18.67) were found in the manucipal reach of the river. The highest abundance of Elmidae (20.49) and Notonectidae (19.87) were found in the agricultural reach while the highest abundance of Gerridae (10.53), Hydropsychidae (28.65) and Perlidae (33.92) were found at the forested reach. From the diver...

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Macroinvertebrate Fauna Of A Tropical Freshwater Stream In Nigeria

Cited by 11 publications

References 7 publications

Assessment of Benthic Macro-Invertebrates of Freshwater Ecosystem: A Case Study of Ovia River (Iguoriakhi), Edo State, Nigeria

Assessment of Benthic Macro-Invertebrates of Freshwater Ecosystem: A Case Study of Ovia River (Iguoriakhi), Edo State, Nigeria

Plankton and Macrobiota Composition and Diversity of Three Tropical Freshwaters Rivers in Ogun and Ondo States, Southwest Nigeria

Macroinvertebrates as bio-indicators of water quality in Omubira Stream, in Kakamega County, Kenya

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