Distribution, abundance, and diversity of euphausiids and their relationships with hydrodynamic processes in Campeche Canyon, Gulf of Mexico


  • José Gabriel Arriola-Pizano Universidad Autónoma Metropolitana https://orcid.org/0000-0002-1023-0817
  • Javier Aldeco-Ramírez Universidad Autónoma Metropolitana. Unidad Xochimilco
  • David Alberto Salas-de León Universidad Nacional Autónoma de México
  • Marc Pagano Université Aix Marseille
  • Leonor Mendoza-Vargas Universidad Autónoma Metropolitana. Unidad Xochimilco



Palabras clave:

Bay of Campeche, Chlorophyll-a, Fluorescence, Phytoplankton, Anticyclonic eddies, Cyclonic eddies, Thermocline, Zooplankton


We analyzed the abundance, diversity, and distribution of euphausiids and their relationship with hydrodynamic
processes from February 2011 to October 2012 in the Campeche Canyon in the southern Gulf of Mexico. Sampling
was conducted at 55 oceanographic stations and zooplankton were captured using horizontal trawls. Environmental
variables (temperature, salinity, and oxygen) and phytoplankton fluorescence were recorded at different depths.
Twenty-four species of euphausiids representing the genera Euphausia, Nematobrachion, Nematoscelis, Stylocheiron,
and Thysanopoda were identified. Stylocheiron carinatum was abundant in February and October, with the furcilia
stage always the dominant one. Differences were observed among the 4 zones identified based on the bathymetric
criteria; zone III (axis and head of the canyon) presented the highest diversity of euphausiids between 100 and 200 m
with 2.14 bits Ind-1 in February and 1.99 bits Ind-1 in October. The spatial-temporal distribution of euphausiids was
heterogeneous in water bodies with temperatures between 15 and 22 °C and low dissolved oxygen concentrations,
which were distributed outside the maximum concentrations of chlorophyll-a (2,127 mg m-3) and had an affinity for
the frontal regions between cyclonic and anticyclonic eddies.

Biografía del autor/a

José Gabriel Arriola-Pizano, Universidad Autónoma Metropolitana

Estudiante de Doctorado en Ciencias Biológicas y de la Salud

Javier Aldeco-Ramírez, Universidad Autónoma Metropolitana. Unidad Xochimilco

Departamento del Hombre y su Ambiente, Universidad Autónoma Metropolitana Unidad Xochimilco, Profesor

David Alberto Salas-de León, Universidad Nacional Autónoma de México

Instituto de Ciencias del Mar y Limnología, Investigador

Marc Pagano, Université Aix Marseille

CNRS, IRD, MIO UM 110, investigador

Leonor Mendoza-Vargas, Universidad Autónoma Metropolitana. Unidad Xochimilco

Departamento del Hombre y su Ambiente, Profesora


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