Composition and Abundance of Odonates at Alatori Stream South-West, Nigeria

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dc.contributor.authorAdu, B.W
dc.contributor.authorKemabonta, K.A
dc.contributor.authorOgbogu, S.S
dc.date.accessioned2019-02-25T10:34:03Z
dc.date.available2019-02-25T10:34:03Z
dc.date.issued2016
dc.descriptionJournal Articlesen_US
dc.description.abstractDragonflies and damselflies (Odonata) are sensitive to human disturbance both as adults that are on wings and as larvae that are aquatic. This attribute suggests their usage as assessment tool for determination of human disturbance within the ecosystem. Alatori stream in Akure Forest Reserve was studied from May 2008 to April 2010 in order to determine the water quality and abundance of Odonata species of the stream. Adults and larvae specimens were sampled throughout the sampling period. A total of 767 adult specimens and 108 larvae were collected. Only 45.4% of the penultimate and ultimate larvae collected eclosed (emerged) to teneral adults. The composition of Odonata families occurring at the stream showed that Libellulidae was the highest (281) followed by Chlorocyphidae (158) while the lowest was Megapodagrionidae (5). The occurrence of members of the families Megapodagrionidae, Chlorocyphidae and Calopterigididae indicates that the stream ecosystem can sustain species with narrow niches. Seven physico-chemical variables: temperature (water and ambient), pH, turbidity, electrical conductivity, dissolved oxygen, water current velocity and depth of the stream were examined and analysed. Analysis of variance (ANOVA) result revealed that conductivity, temperature and water depth played a major role in determining the community structure of odonate assemblage in the stream. The mean (±) standard deviation of electrical conductivity (184.25 ± 6.37μS/cm) of the water was indicative of an unpolluted freshwater system with stable habitat structure. The study suggests that the water quality of Alatori stream is healthy and can sustain Odonata and other fauna within the ecosystem.en_US
dc.description.sponsorshipTertiary Education Trust Funden_US
dc.identifier.citationAdu, B.W, Kemabonta, K.A and Ogbogu, S.S (2016). Composition and Abundance of Odonates at Alatori Stream South-West, Nigeria. Unilag Journal of Medicine, Science and Technology, Vol.4(1), 96-110p.en_US
dc.identifier.issn2408-5049
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/3829
dc.language.isoenen_US
dc.publisherUniversity of Lagos Press, Akokaen_US
dc.relation.ispartofseriesUniversity of lagos Journal;Vol.4(1)
dc.relation.ispartofseriesUniversity of lagos Journal;Vol.4(1)
dc.subjectAlatori streamen_US
dc.subjectEcosystemen_US
dc.subjectHuman Disturbanceen_US
dc.subjectWater Depthen_US
dc.titleComposition and Abundance of Odonates at Alatori Stream South-West, Nigeriaen_US
dc.typeArticleen_US
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Volume 4, Issue 1, 2016