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The RV Víctor Angelescu of the National Institute of Fisheries Research and Development sailed from the port of Mar del Plata

Inidep initiates hake stock evaluation in Argentine-Uruguayan Common Fishing Zone

  (ARGENTINA, 5/17/2019)

The research vessel BIP Víctor Angelescu, of the National Institute of Fisheries Research and Development (INIDEP), sailed on Thursday morning from the port of Mar del Plata to conduct a scientific study of common hake (Merluccius hubbsi) in the Common Zone of Argentine-Uruguayan Fishing.

The survey is carried out within the framework of the Mixed Technical Commission of the Maritime Front (CTMFM) and will last approximately 24 days. Fifteen scientists from INIDEP and a researcher from the National Directorate of Aquatic Resources (Dinara) of Uruguay are participating. The research area will cover from 34° S to 40° S and between isobaths of 50 meters and 300 meters, approximately.

Click on the image to enlarge it

The main objectives of the scientific cruise are to delimit the hake-laying area that is distributed in the Argentine-Uruguayan Common Fishing Zone and to analyze the spatial distribution of the juveniles of this species.

In addition, the researchers will seek to monitor the reproductive status of the hake and estimate the biological-fishery parameters: sex ratio, length structure and age of the broodstock and estimate the length of first maturity.

The scientists will also work to determine the specific composition and structure of rays (Rajiformes order) in the largest landing area of this resource by the Argentine fleet on the 200-foot isobath.

                 

Argentine-Uruguayan Common Fishing Zone

This study was designed to collect information from the Buenos Aires offshore ecosystem. From the abiotic component scientists will record temperature, salinity, velocity of the current and biotic data, the specific composition and yields of the rest of the demersal species retained by the fishing gear.

In order to complement the reproduction studies, the presence of eggs and larvae in the plankton will be evaluated, as well as the abundance and diversity of the zooplankton present in the area, which is a source of food for hake and other species of the ecosystem. At the same time, the areas with the highest concentration of chlorophyll, an indicator of phytoplankton, the first link in the food chain, will be detected.


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