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Observations on the abundance and distribution of adult caddisflies (Insecta: Trichoptera) in streams and rivers of Ile-Ife, southwestern Nigeria

Published online by Cambridge University Press:  01 September 2013

B.O. Amusan  and
S.S. Ogbogu
B.O. Amusan*
Affiliation:
Department of Zoology, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
S.S. Ogbogu
Affiliation:
Department of Zoology, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
*
*E-mail: [email protected]
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Abstract

The present study surveyed adult caddisflies in Ile-Ife to identify the species that contribute to the fauna of freshwater ecosystems of this area and to determine their seasonal abundance. Adult caddisflies were collected between June 2009 and November 2010 from eight sampling stations established at different locations using an improvised light trap. A total of 754 adult caddisflies that were collected represent six species in six genera and three families. The species identified are Dipseudopsis conformis Navas, 1931, Polymorphanisussimilis Ulmer, 1912, Aethaloptera dispar Brauer, 1875, Ceraclea njalaensis (Mosely, 1933), Pseudoneureclipsis mlangensis Mosely, 1939 and Cheumatopsyche digitata (Mosely, 1935). The Hydropsychidae was represented by three species belonging to three genera. The hydropsychid C. digitata was the dominant and most widely distributed species, occurring at all sampling stations with the highest frequency of occurrence (51%). On the other hand, P. mlangensis (Dipseudopsidae) was the least abundant with the lowest frequency of occurrence (0.8%).

Keywords

caddisfliesseasonal abundanceIle-IfeNigeria
Type
Research Papers
Information
International Journal of Tropical Insect Science , Volume 33 , Issue 3 , September 2013 , pp. 163 - 169
Copyright
Copyright © icipe 2013 

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