IFOP Marine Biologist presents his research on sardines at ichthyology congress in Portugal
June 27th, 2018
Ichthyology is a branch of science dedicated to fish study.
On June 13TH , Antonio Aranis, IFOP researcher in charge of Fisheries Assessment Department Center-South Monitoring Program, presented the study “Criteria for estimating the reference size at Ibero-American International Ictilogy Congress (SIBIC) in Portugal. in juveniles of Common Sardine (Strangomera bentincki) of Chile‘s south central zone“, this work corresponds to a commissioned Scientific Committee and SUBPESCA investigation that was carried out by researchers Karen Walker, Javier Contreras and Antonio Aranis, document recently published.
Aranis explained “in this presentation, size structure of common sardines was analyzed, because of impossibility of estimating a recruitment size, because purse seine fishing gear is not selective and prevents quantification of time at which it was collected. they incorporate fish into the exploited phase of the stock. This problem is addressed by a statistical model.
A weekly series (2001-2015) was analyzed based on size structure from pelagic fishery landings in Chile’s central-southern zone, between Valparaíso and Los Ríos Regions. Specifically, sizes were studied according to two sub-zones between the Valparaíso and Biobío regions and Araucanía and de los Ríos regions. Reference size for juveniles of central-south zone of Chile was estimated and behavior of these sizes was spatially analyzed. Finally, a criterion was established that confirms juveniles size under a certain margin of error, which allows subsequently defining a fraction that could be protected to avoid overfishing by growth “.
Pedro Guerreiro (Ph.D.), from CCMAR, Center for Marine Sciences of the University of Algarve, Portugal, Coordinator of the VII Iberian Congress of Ichthyology (SIBIC2018) and recently elected President of the Iberian Society of Ichthyology (SIBIC) has expressed the importance of these meetings, of the world community and the high level of the studies presented, extending a future invitation to participate to new colleagues and professionals of IFOP and of Chile in general, since SIBIC maintains and encourages collaborations with colleagues and the associations of ichthyologists of Ibero-America.