Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Pakistan Journal of Biological Sciences
  Year: 2012 | Volume: 15 | Issue: 12 | Page No.: 568-575
DOI: 10.3923/pjbs.2012.568.575
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Impact of Exotic Carps in the Polyculture with Indigenous Carps: Competition for Food

M.M.R. Siddiquee, M.F. Rahman, N. Jahan, K.C.A. Jalal, S.M.N. Amin and A. Arshad

Abstract:
The fingerlings of indigenous carps such as catla (Catla catla), rohu (Labeo rohita) and mrigal (Cirrhinus mrigala) with exotic carps such as silver carp (Hypophthalmichthys molitrix), bighead carp (Aristichthys nobilis) and mirror carp (Cyprinus carpio) were cultured together in a fish pond at Bangladesh Agricultural University, Mymensingh, in order to determine the food electivity, dietary overlap and food competition among indigenous major carps and exotic carps. Phytoplankton (Chlorophyceae, Cyanophyceae), zooplankton (rotifers) were the dominant groups in the cultured pond. Chlorophyceae was dominant in the diet of rohu. Chlorophyceae and rotifers were the preferred food of catla. Mrigal preferred phytoplankton than zooplankton. Rohu showed positive electivity for zooplankton. Silver carp consumed large quantity of phytoplankton and also preferred rotifers. Chlorophyceae was the dominant food group in the diet of bighead. Mirror carp also preferred plant food organisms dominated by Chlorophyceae. Bighead had positive trends towards phytoplankton. Both mrigal and mirror carp had positive electivity towards phytoplankton. The higher level of dietary overlap occurred between rohu and silver carp followed by between rohu and bighead carp and between catla and silver carp. The lowest level of dietary overlaps occurred between rohu and mirror carp.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

M.M.R. Siddiquee, M.F. Rahman, N. Jahan, K.C.A. Jalal, S.M.N. Amin and A. Arshad, 2012. Impact of Exotic Carps in the Polyculture with Indigenous Carps: Competition for Food. Pakistan Journal of Biological Sciences, 15: 568-575.

DOI: 10.3923/pjbs.2012.568.575

URL: https://scialert.net/abstract/?doi=pjbs.2012.568.575

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 

Curve Bottom