Resumen

VALENZUELA QUINONEZ, Wenceslao; LOPEZ LIMON, José Antonio  y  ARAGON-NORIEGA, Eugenio Alberto. Impact of the shrimp aquaculture by suction of fish and shrimp larvae by pumping in the aquaculture farms of Navachiste, Sinaloa. Hidrobiológica [online]. 2004, vol.14, n.2, pp.105-112. ISSN 0188-8897.

The impact of shrimp culture over commercial populations of planktonic fish and shrimps that penetrate to the estuaries to complete their development in Bahía Navachiste, Sinaloa was evaluated during pumping. Monthly samplings were made in13 months in the intake water channels and the reservoir channels of two shrimp farms and in the near offshore of Navachiste. It was found that fish larvae are recruited to the intake water channels, throughout the year, but with two important periods: spring and autumn (abundance greater than 12 org/m³). The greatest shrimp postlarva's abundance was in September with 20 org/m³. The abundances in the two interior places were different. There is a direct relationship between the abundance in the intake water channels and the density captured by the pumping systems of the farms. It is concluded that natural mortality is added by shrimp mariculture farms pumping during the early stages of estuarine biota. The impact will be different according to the place where the suction pump is located. This type of studies are important to recommend places of location of shrimp farms in the coastal lagoons.

Palabras llave : zooplankton; pumping; farms; impact; Sinaloa.