Seasonal and interannual changes in reproductive parameters and eggs biochemical composition of the fishery resource Pleuroncodes monodon (Decapoda: Munididae) from the Humboldt Current System
Date
2020-01Author
Guzmán, Fabián
Bascur, Miguel
Olavarria, Luis
Mora, Sergio
Riera, Rodrigo
Urzúa, Ángel
Publisher
Fisheries ResearchDescription
Metadata
Show full item recordAbstract
Environmental variables are key drivers of reproductive traits in marine organisms, which can have significant
economic consequences in commercial species. Pleuroncodes monodon is an important resource of the industrial
fisheries’ fleet of the Humboldt Current System. This species is subject to seasonal variations in pivotal variables
such as temperature and food availability, as well as, climatic events. We herein analyse the variations in reproductive parameters and in the eggs’ biochemical profiles in relation to environmental conditions. Differences
in all studied parameters were found between 2014 and 2015. In 2015, fecundity (measured as total number of
eggs) and protein content were higher than 2014, but lipid content showed the opposite pattern. Seasonal and
interannual variations were also observed in the energy content per egg; whilst the brood energy content did not
show seasonal or interannual variation. This information is of utmost importance for integrative management of
this commercial good as the data measures dynamic variations in the species populations. Currently, this squat
lobster is overexploit and so far, no seasonal nor interannual variations have been considered in its management
plan. The present study provides evidences that the female lobsters need different management strategies to
maintain sustainable fisheries of Concepcion, Chile.