Gómez Toledo, J.A., C., Quiñonez Velázquez, T.L., Espinosa Carreón, R.J., Flores Anaya, E., Álvarez-Trasviña, U., Jakes Cota & L., Morales Hernández (2024). Ecological analysis of the small pelagic fishery in the GC during the period 2000-2022. 24th Annual Trinational Sardine & Small Pelagics Forum. Ensenada, BC, México, mayo 21 - 22, 2024, 1.
Josue Alejandro Gómez Toledo 1, Casimiro Quiñonez Velázquez 2, Teresea Leticia Espinosa Carreón 1, Ricardo Javier Flores Anaya 3, Eduardo Álvarez-Trasviña 3, Ulianov Jakes Cota 2 y Lisset Morales Hernández 3
We analyzed the Gulf of California´s small pelagic fishery output, using ecological indices during the period 2000-2022. For Shannon diversity index (H'), we found the lowest values during the period between the end of 2007 to the beginning of 2010, all values in this period were <1. The above is due to the wide dominance of catches of Pacific sardine (S. sagax), leaving the other species behind, which can be observed in the high values of the Simpson dominance index (D) and low values in Pielou Equitability (J). The highest values for the H' index occurred from 2018-2020 and have remained high until 2022, where a clear decrease in the D index and increase in the J index also stands out. This contrasts with the increase in the availability of thread herring (Opistonema spp.) and anchovy (Engraulis mordax) to the fishery, species that compete with the Pacific sardine fishery.
Palabras clave: Ecological index; small pelagic fish; Golfo de California
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