Event Abstract Back to Event Spring northward juvenile migration of the Patagonian grenadier (Macruronus magellanicus) from the Northwest Patagonian waters of Chile Luis A. Cubillos1*, Edwin Niklitschek2 and Sergio Lillo3 1 Universidad de Concepción, Oceanografía, Chile 2 Universidad de Los Lagos, Centro i-mar, Chile 3 Instituto de Fomento Pesquero, Chile Important nursery grounds for Patagonian grenadier (Macruronus magellanicus) are located mainly in the Northwest Patagonian Inner Sea (42ºS-44ºS), from which juvenile must to disperse or migrate offshore, then along the Chilean coast either northward or southward. The objective of this paper was to estimate northward spring juvenile migration of the Patagonian grenadier from nursery to feeding areas, which are located near Talcahuano (35º00’S-37º10’S). Length-frequency data (LFD) were obtained from an acoustic survey carried out in November 1999, which covered from 35ºS to 47ºS. Generalized linear model was used to describe the presence of juvenile per latitude and depth, and to infer the origin and displacement of juveniles. Subsequently, LFD data were grouped according to latitudinal strata. Grouped LFD were decomposed into normal component groups, from which mean, standard deviation and proportion were estimated from the mixed LFD. The average length of the identified groups were sorted from south to north, and linked to compute significant increment in fish length and age per kilometers. The length increment per time was not due to growth, rather they was due to spatial displacement of juvenile from southern nursery grounds to northern feeding areas. Although homing to feeding areas and/or high residency (partial migration) have been postulated, it seems that recruitment of juveniles to northern feeding areas are origintaed from NPIS nurseries. The West Wind Drift Current seems to be the main drive for dispersion of Patagonian grenadier to recruit northward in open waters along the continental shelf. Acknowledgements We are grateful to D. Secor and A. Zuleta for discussing the subject contained along this manuscript. During the course of writing this manuscript L.A. Cubillos and E. Niklitsheck were funded by CONICYT/FONDECYT research project number 1111006. Keywords: ontogenetic movement, connectivity, juvenile, Latin America, Patagonia Conference: XV European Congress of Ichthyology, Porto, Portugal, 7 Sep - 11 Sep, 2015. Presentation Type: Poster Presentation Topic: Life Cycles, Migration and Connectivity Citation: Cubillos LA, Niklitschek E and Lillo S (2015). Spring northward juvenile migration of the Patagonian grenadier (Macruronus magellanicus) from the Northwest Patagonian waters of Chile. Front. Mar. Sci. Conference Abstract: XV European Congress of Ichthyology. doi: 10.3389/conf.FMARS.2015.03.00191 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 11 Nov 2015; Published Online: 02 Dec 2015. * Correspondence: Dr. Luis A Cubillos, Universidad de Concepción, Oceanografía, Concepción, Chile, lucubillos@udec.cl Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract Supplemental Data The Authors in Frontiers Luis A Cubillos Edwin Niklitschek Sergio Lillo Google Luis A Cubillos Edwin Niklitschek Sergio Lillo Google Scholar Luis A Cubillos Edwin Niklitschek Sergio Lillo PubMed Luis A Cubillos Edwin Niklitschek Sergio Lillo Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.