This study was carried out for a term of six months in 2014. It took two seasons per two-month intervals during the dry and rainy seasons. Later, ten samples were taken and segmented during two monthly collections which were carried out during the new and full moon phases in the low tide; however, the last month collection omitted just one capture sample. In addition, for hauling was used a chayo-type handwork net with a 0.45 m mouth and 1.16 mm light mesh; as a result, salinity, temperature, and dissolved oxygen were the physical-chemical parameters measured.  Furthermore, 12003 postlarvae gathered through this research contained Litopenaeus occidentalis, Litopenaeus stylirostris, Litopenaeus vannamei, and Farfantepenaeus californiensis, obtaining the last ones in a restricted way. For their part, salinity and the dissolved oxygen exhibited a significant relationship to postlarval wealth, but not in temperature.  In this way, this study concluded that "El Estero Cate" formed a natural area as an important hatchery of penaeid shrimp growth, in special to L. occidentalis, L. stylirostris y L. vannamei species.

In this way we highlight that the Estero Caté constitutes a natural breeding area important for the development of penaeid shrimp, particularly for the species L. occidentalis, L. stylirostris and L. vannamei.