Aceves-Medina, G., S.P.A., Jiménez-Rosenberg, L., Sánchez-Velasco, C., Franco-Gordo, R., Avendaño-Ibarra, R.J., Saldierna-Martínez, A.T., Hinojosa Medina & M.E., Hernández Rivas (2024). Ichthyoplankton Species Richness along 40 years of Research in the Mexican Pacific. Ocean Observing in California: Celebrate the Past, Showcase the Present, Envision the Future. San Diego, Estados Unidos de América, mayo 14 - 16, 2024, 1.
Gerardo Aceves-Medina 1, Sylvia Patricia Adelheid Jiménez-Rosenberg 1, Laura Sánchez-Velasco 2, Carmen Franco-Gordo 3, Raymundo Avendaño-Ibarra 1, Ricardo Javier Saldierna-Martínez 1, Alejandro Trinidad Hinojosa Medina 1 y Martín Enrique Hernández Rivas 1
The systematic observation of the oceans in the Mexican Pacific in terms of environmental measurements together with the collection of fish eggs and larvae, began in the West Coast of the Baja California Peninsula (WBCP) with the CalCOFI program between 1956 and 1984. In the late 70's and early 80's, scientist like Geoffrey Moser, Paul Smith and Ángeles Alvariño among others, trained Mexican researchers and students who initiated oceanographic cruises in isolated projects in the early 80's in the WBCP and in the Gulf of California (GC). In 1997, the IMECOCAL program was initiated in the WBCP seasonally in most years until 2019, while in the rest of the Mexican Pacific including the GC, the sampling effort continued to operate through projects of different institutions and with specific objectives, but all included the collection of zooplankton samples. In spite of being collections with different capture gears and methods of analysis, the sampling effort carried out by these pioneers in the study of Ichthyoplankton provide a good representation of the diversity of species in a region of strong environmental contrasts, which includes four biogeographic provinces (Panamic, Mexican, Cortés and San Diego), and is influenced by tropical, subtropical and temperate water masses. This work represents the first effort in bringing together the databases of 40 years of work in just over 150 cruises between 1984 and 2022 from Ensenada BC to the Gulf of Tehuantepec, Mexico. The objective was to determine the species richness of fish larvae for each area of the Mexican Pacific (Southern region of the California Current, GC, Mexican central Pacific and Gulf of Tehuantepec), which in total includes 706 taxa, 444 identified to species level, 152 to genus, 105 to family, and 5 to order.
Palabras clave: Fish larvae; Mexican Pacific; Data Base
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