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Submitted on: 30 September 2005.
Revised on: 16 January 2006.
Accepted on: 19 February 2006.
___________________Hidrobiologica---UNIV AUTONOMA METROPOLITANA-IZTAPALAPA
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Submitted on: 12 August 2021.
Revised on: 10 September 2021.
Accepted on: 22 September 2021.
___________________Hidrobiologica---UNIV AUTONOMA METROPOLITANA-IZTAPALAPA
Submitted on: 02 May 2002.
Revised on: 01 August 2002.
Accepted on: 12 September 2002.
___________________Hidrobiologica---UNIV AUTONOMA METROPOLITANA-IZTAPALAPA
Submitted on: 19 May 2009.
Revised on: 21 August 2009.
Accepted on: 16 October 2009.
___________________Hidrobiologica---UNIV AUTONOMA METROPOLITANA-IZTAPALAPA
Submitted on: 04 February 2011.
Revised on: 04 March 2011.
Accepted on: 29 April 2011.
___________________Hidrobiologica---UNIV AUTONOMA METROPOLITANA-IZTAPALAPA