Profile updated on 23 August 2022
Chilean jack mackerel
Chilean jack mackerel is widespread throughout the South Pacific. Research based on genetic and otolith analysis supports the existence of a single population (SPRFMO, 2013a,b), as well as a recent analysis using a biophysical model, that indicates high dispersion range and spatial overlap of modeled recruitments, which supports the existence of a single panmictic population in the SE Pacific (SPRFMO 2016). Finally, a recent investigation recommends the acceptance of one of the two SPRFMO's hypotheses: a unique population for the entire described area, with a synchronic biologic cycle and high connectivity, based on the transport of eggs and larvae. This sustains an important nursery area in Southern Peru and Northern Chile. Finally, all heterogeneity could be maintained by the usage of the habitat during growth and feeding processes (Vásquez et al. 2020). Considering the available information and the connection along with the entire distribution, a single assessment unit is considered here.
Of the existing five management units, the Peruvian (El Peruano 2017) and the high seas fisheries (the SPRFMO Convention area; all pelagic trawlers) are exclusively for direct human consumption; Chilean fisheries operating (the northern, XV-II regions and the central-southern Chilean, III-X regions) are mainly used for fishmeal (Quiroz 2017) and catches from Ecuador can be used both for fishmeal or human consumption (SPRFMO 2019).
DATA DEFICIENT to 10.0
DATA DEFICIENT to 9.3