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Benthic Macro Invertebrate Fauna and Physico-chemical Parameters in Okpoka Creek Sediments, Niger Delta, Nigeria

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Author(s): J.F.N. Abowei

Journal: International Journal of Animal and Veterinary Advances
ISSN 2041-2894

Volume: 1;
Issue: 2;
Start page: 59;
Date: 2009;
Original page

Keywords: Benthic invertebrates | physico-chemical parameters | Okpoba creek sediments | Niger Delta | Nigeria

ABSTRACT
The benthic macro invertebrate fauna and physico-chemical parameters in Okpoka creek sedimentswas studied for a period of one year. A total of nineteen (19) species(Ophidonais serpentina, Arenicola marina,Eunice harassi, Marphysa sanguinea, Capitella capitata, Notomastus latrella, Notomastus tenuis, Glyceracapitata, Glycera convoluta, Nereis diversicolor, Nereis pelagica, Nereis virens, Nephthys hombergi,Nototropis swamidami, Cliberanus cooci, Iphinoe tripanosa, Chironomus ablabiesmia, Tellina nymphalisandTympanotonus fuscatus) of benthic invertebrates’ fauna belonging four (4) phyla (Annelida, Amphipoda,Arthropoda and Mollusca), six (6) classes (Oligochaeta Polychaeta Crustacea Insecta Bivalvia and Gastropoda)and twelve (12) families (Naididae Arenicolidae Eunicidae Capitellidae Glyceridae Nereidae NephthyldaeGammaridae Callianassidae Chironomidae Tellidae) were found in the Okpoka creek during the study.Polychaeta with six (6) families and twelve (12) species and percentage composition of 63.2% occurred most;followed by Crustacean with six (2) families and twelve (3) species and percentage composition of 15.8%. Therest families (Oligochaeta, Insecta, Bivalvia, Gastropoda) each with a family and specie occurred least. pH hada positive relationship with Ophidonais serpentine, Arenicola marina, Nereis diversicolor, Nereis pelagea,Nereis Virens, Nephthys hombergi, Iphinoe tripanosa and Tellina nymphalis, whereas temperature wasstrongly related with Arenicola marina, Notomastus latreila, Notomastus tenius, Marphysa sanguinea, Glyceraconvoluta, , Nereis diversicolor, Nereis pelagea, Nereis Virens, Nephthys hombergi, Iphinoe tripanosa andTellina nymphalis, and Cliberanus cooci. A positive relationship exists between salinity and Notomastuslatreila, Glycera convoluta Nototropis swamidami, Cliberanus cooci, Iphinoe tripanosa and Tellina nymphalis.Similarly, dissolved Oxygen and Notomastus latreila, Notomastus tenius, Eunice harassi, Marphysa sanguinea,Marphysa sanguinea, Nereis diversicolor, Nephthys hombergi, Clibernarius cooci, Iphinoe tripanosa andTellina nymphalis. Strongly related. Biochemical Oxygen demand exhibited positive relationship withOphidonais serpentine, Eunice harassi, Glycera capitata, Nereis diversicolor, Nereis pelagea, Nephthyshombergi, Nototropis swamidami and Tellina nymphalis. Conductivity related strongly with Ophidonaisserpentine, Notomastus latreila, Marphysa sanguinea, Glycera convoluta, Nereis diversicolor, Nereis pelagea,Clibernarius cooci, Iphinoe tripanosa and Tympanotonus fuscatus.
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