TY  - JOUR
T1  - Composition and Abundance of Macrobenthos in Majidun River, Ikorordu Lagos State, Nigeria
AU - Ugwumba, A.A.A. AU - Esenowo, I.K. 
JO  - Research Journal of Biological Sciences
VL  - 5
IS  - 8
SP  - 556
EP  - 560
PY  - 2010
DA  - 2001/08/19
SN  - 1815-8846
DO  - rjbsci.2010.556.560
UR  - https://makhillpublications.co/view-article.php?doi=rjbsci.2010.556.560
KW  - ikorodu
KW  -abundance
KW  -diversity
KW  -composition
KW  -Macrobenthos
KW  -Majidun river
AB  - A study on the composition and abundance of macrobenthos of Majidun river, Ikorodu, Lagos state was carried out from June, 2008 to May 2009 at 6 sampling stations along the river from its source to the mouth. The river is a multipurpose resource for artisanal fishing, transportation, sand mining and domestic uses. A total of 10,799 individuals of macrobenthos belonging to 18 genera in two Phyla, Mollusca and Anthropoda were recorded from the 6 sampling stations. Mollusca were represented by Bivalvia and Gastropoda, the most common species were the gastropods: <I>Pachymelania aurita, P. fusca, P. fusca</I> var. <I>quadriserlata, Tympanotomus fuscatus</I> var. <I>radula, T. fuscatus fuscatus</I> and <I>Melanoides tuberculata</I>. Arthropoda consisted mainly of caddis fly larva, <I>Phryganea</I> sp., the crabs:<I> Sesarma huzardii</I>, <I>Cardisoma armatum</I> and <I>Callinectes latimanus</I> and the prawn: <I>Macrobrachium marobrachion. T. fuscatus</I> var. <I>radula </I>was the most abundant species accounting for 20.17%, closely followed by<I> P. aurita</I> 19.58% while the least abundant, <I>Phryganea</I> sp., accounted for &lt;0.1% of the total number of macrobenthos. Shannon-wiener diversity index indicated a maximum of 0.97 in mid river station (surrounded by mangrove trees) compared to the stations at the source of the river (0.88) and its mouth (0.87) where it flows into Lagos Lagoon. Macrobenthos abundance and diversity levels were significantly low.
ER  -