Diversity and density of Pleco (Pterygoplycthys sp) in Ciliwung River, Jakarta Indonesia

Elfidasari, Dewi and Muthmainah, Hurunin Fathonah and Wijayanti, Fahma (2019) Diversity and density of Pleco (Pterygoplycthys sp) in Ciliwung River, Jakarta Indonesia. In: International Biodiverstiy & Ecology Sciences Symposium Proceeding: Bioeco2019. Palas Academic Organization and Trade Corporation, Istanbul, pp. 156-161. ISBN 9786058019805

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Abstract

There has been a lot of information about some species of fishes, plants, insects, planktons, river quality,including heavy metal concentrations from organisms, water and sediment, from some research in Ciliwung River since 2008. But, there is still very limited data that related to the diversity and density ofpleco in the Ciliwung River. Pleco is a native species from Costarica, Panama and South America and it’sknown as an invasive species which is potentially to reduce local biodiversity by eliminating local speciesof fishes in Ciliwung rivers. The aims of this study is to analyzing the diversity and density of pleco from Ciliwung River in the Jakarta area. Purposive sampling was used with a consideration that the three pointsrepresent the presence of pleco. The location of sampling was the Ciliwung river in Jakarta which flows along the Cawang-Condet. Sampling has been done using 4x2 m2 cast nets with a 2.5-inch mesh size. The sampling activity was carried out in 09.00-15.00 AM. The results showed that the index diversity of pleco in the Ciliwung river in Jakarta was low, which was equal to H'= 0 because there is only one species of pleco was found there, Pterygoplichthys pardalis. The population density of pleco in the Ciliwung river in Jakarta was 58 individuals/m2.

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