Study on the nutritional condition of Argentine anchovy (Engraulis anchoita) Northern stock larvae in relation to the hydrographic features of the nursery area
Keywords:Nutritional condition, morphometry, Principal Component Analysis, Engraulis anchoita
The study of larvae nutritional condition allows to assess the physiologic state that reflects the environmental situation they were exposed to. It represents a useful instrument to determine favourable nursery areas, provides tools for the management of a population subject to fishing and furnishes information to establish appropriate closed areas and periods. The material analyzed derived from three cruises carried out to assess Argentine anchovy Northern stock during the 2003, 2004 and 2006 reproductive peak. The objective of this work was to study the nutritional status of Argentine anchovy first feeding larvae caught in the coastal and mid-shelf of the Río de la Plata River maritime front in relation to the hydrographic features of the nursery area. The condition of Argentine anchovy larvae caught in areas with different oceanographic characteristics (estuarine zone, mix or frontal and shelf waters) was compared. To determine the nutritional status the Principal Component Analysis employing five morphometric variables and weight, the Fulton Condition Factor and length-weight relation of specimens was performed. The results obtained in the three reproductive seasons analyzed show that the nutritional condition was better in areas with mix characteristics as compared to areas influenced by estuarine and shelf waters. The use of morphometric variables and weight allows to find differences in the growth rate and nutritional condition of Argentine anchovy larvae obtained in areas characterized by different oceanographic scenarios.
How to Cite
Copyright (c) 2013 Marina Vera Díaz, Marcelo Pájaro
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors of articles published in Marine and Fishery Sciences retain copyright on their articles, except for any third-party images and other materials added by Marine and Fishery Sciences, which are subject to copyright of their respective owners. Authors are therefore free to disseminate and re-publish their articles, subject to any requirements of third-party copyright owners and subject to the original publication being fully cited. Visitors may also download and forward articles subject to the citation requirements. The ability to copy, download, forward or otherwise distribute any materials is always subject to any copyright notices displayed. Copyright notices must be displayed prominently and may not be obliterated, deleted or hidden, totally or partially.
This journal offers authors an Open Access policy. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other legal purpose within the Creative Commons 4.0 license (BY-NC-SA), without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of Open Access.