Welcome to FIS   Sponsored By
Subscribe to FIS | Register with FIS | Advertise with FIS | Newsletter | About FIS | Contact us
   


Photo: courtesy Revista Puerto

Illex Squid: X-ray of abundance

Click on the flag for more information about Argentina ARGENTINA
Wednesday, January 27, 2021, 07:00 (GMT + 9)

The INIDEP presented the report of the campaign carried out last month. Estimates of biomass and number of recruits from the summer spawning stock were 130 thousand tons and 699 million individuals. It is estimated that at the beginning of the harvest, 60 percent of the specimens had passed the reproductive process.

The Technical Report contains the results of the research campaign carried out by INIDEP scientists research vessel 'Víctor Angelescu' at the end of last year to estimate the abundance of the summer spawning stock (SDV) of the Argentine squid.

The study, prepared by Marcela Ivanovic, Beatriz Elena, Martha Mc Innes, Nicolas Prandoni and Gabriel Rossi, determines the population structure, biomass and number of squid recruits from the summer spawning stock.



The campaign was carried out between December 4 and 23 in an area between 44 ° and 46 ° 30 'South, a total area of ​​21 million square nautical miles in which five strata were delimited and 50 sets of bottom trawling of 15 minutes each and a limit of 5 sets per stratum was adopted. Due to adverse weather conditions, two sets were suspended, so there were finally 48.

With the early opening of the squid season, defined by the CFP for more than three years, it was sought to take better advantage of the abundance of the summer spawning stock, which by the beginning of the year is in the final stage of its cycle vital.

Image: courtesy C.A.P.A.

With this early start, the composition of the catches and the contributions that each stock had in the fleet's unloadings were modified. Traditionally, with the beginning of the fishing season on February 1, the catches were mainly composed of the sudpatagponico stock (SSP).

But from this change and early start, it is now the SDV that contributes between 80% and 90% of the catches in the last two years of the management unit south of 44 ° South. As a result of this situation, it became essential to study and analyze this stock, which was possible thanks to the contribution of the shipowners who financed the campaign due to INIDEP's budget deficiency.

Image: courtesy C.A.P.A.

“The estimates of biomass and number of recruits from SDV were 130 thousand tons; 699 million individuals ”, reported INIDEP researchers. "The two strata located between 44º and 45º South contributed around 80% of the abundance both in weight and in number of individuals," he specifies.

"There is nothing to compare the figures with because it is the first time that this stock has been studied," explained Marcela Ivanovic yesterday in consultation with this medium.

For the sampling of individuals, samples of up to 150 individuals were taken per set, which produced a total of 4,688 individuals sampled. In total, 4,216 kilos of Argentine squid were caught in the 48 sets carried out. "75% of the total catch was obtained north of 45 ° South", details the report to which REVISTA PUERTO had access.

Photo: courtesy Revista Puerto

The average density for the entire investigated area was 6.22 tons per square nautical mile. The highest concentrations were located north of 45 ° South where the mean varied between 21 and 35 tons per square nautical mile. Between 45 ° and 46 ° South, the highest yields were observed in stations more than 100 meters deep.

Te size of the squid varied between 170 and 298 millimeters and 30% of the individuals of both sexes were in reproduction and post-production, which indicates that the reproductive process had already begun for that portion of the stock, the researchers detailed.

“Between 26 and 28% of the specimens were in a state of advanced maturity, close to beginning the reproductive process. Of the rest of the specimens sampled, 39% of the males and 13% of the females had an incipient maturation process and the remaining 30% of the females were immature or in maturation, typical of the delay of the maturation process in the females with respect to the characteristic males of the species ”, considered the scientists in the Report.

During the campaign, two stocks could be identified in the catches. In addition to SDV, the South Patagonian Stock. For the identification of the two squid stocks, the analysis criteria of the size structure and the degree of maturity were applied. Thus, immature or incipiently mature males with a mantle length of less than 20 centimeters, and immature or maturing females with a BL of less than 22 centimeters, were identified as corresponding to SSP, the rest were identified as SDV.

The results of the campaign allowed determining that 30% of the BDS had started their reproductive process while 28% were in advanced maturity, close to starting it.

Author: Roberto Garrone / Revista Puerto


www.fis.com

 


 Print


Click to know how to advertise in FIS
MORE NEWS
Russian Federation
Mar 4, 20:00 (GMT + 9):
Catch volume in Russia in January-February decreased by 12.7%
United Kingdom
Mar 4, 20:00 (GMT + 9):
Brexit briefing event run by APPG on Fisheries sees unprecedented engagement
European Union
Mar 4, 19:20 (GMT + 9):
Statistics │ Imports │ Pollock Fillets and surimi: USA, Vietnam, India, China, Russia │ 2020
United States
Mar 4, 19:00 (GMT + 9):
Unethical Seafood: How the US Import System Fails Consumers
Japan
Mar 4, 17:00 (GMT + 9):
Seafood entry | Tokyo Central Fish Market (Toyosu, Adachi, Ota) | week 8
Japan
Mar 4, 17:00 (GMT + 9):
Tarako | Salted Alaska pollock roe inventories | 9 main cities | 2016-17-18-19-20
United Kingdom
Mar 4, 07:00 (GMT + 9):
Clean Catch UK launches new bycatch reporting app, designed with fishermen, on #WorldWildlifeDay
United States
Mar 4, 07:00 (GMT + 9):
Dissolved and suspended solids in aquaculture systems
Japan
Mar 4, 03:00 (GMT + 9):
Auction prices for common squid (todarodes pacificus) frozen on board │Hachinohe-Ogi markets (until Mar-02)
Japan
Mar 4, 02:00 (GMT + 9):
Import volumes │ Stock / Sales │ Frozen octopus | 2018-19-20
European Union
Mar 4, 00:00 (GMT + 9):
Other Media | SeafoodSource: WWF: Mediterranean fisheries need far greater protection
Canada
Mar 4, 00:00 (GMT + 9):
Other Media | FiskerForum: Atlantic Destiny Lost After Fire On Board – All Crew Safe
Republic of Ireland
Mar 4, 00:00 (GMT + 9):
IN BRIEF | Dates announced for Irish Skipper Expo 2022 and Scottish Skipper Expo 2022
Argentina
Mar 3, 21:00 (GMT + 9):
The southern Patagonian appeared and the illex squid catches went up
Japan
Mar 3, 19:00 (GMT + 9):
Japan firms send canned mackerel to poor kids in gratitude for 2011 aid



Lenguaje
FEATURED EVENTS
  
TOP STORIES
The southern Patagonian appeared and the illex squid catches went up
Argentina The jigging fleet fishes it at the edge of 200 miles above 48 ° 30´S with yields exceeding 20 tons per day. From CAPA they warn of a slowdown in sales and a drop in the prices of the whole d...
In 1st Day on Job, New WTO Chief Pushes for Fisheries Deal
Switzerland GENEVA - The new head of the World Trade Organization threw her support behind long-fruitless efforts among member countries to agree on fisheries subsidies that could reduce overfishing, calling the ...
Tesco takes action to improve marine sustainability, moving to a Seascape approach for tuna sourcing
United Kingdom     Tesco joins WWF in advocating a Seascape approach to better protect marine biodiversity     Sets out roadmap for putting new approach into action in it...
The Norwegian Pelagic Fishing Course in Week 8
Norway Historic blue whiting catch from "Slaatterøy" and on Møre, the herring was ready for spawning on arrival at Buagrunnen NVG herring: Finally, the herring arrived on M&osla...
 
Maruha Nichiro Corporation
Nichirei Corporation - Headquarters
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation - Wartsila Group Headquarters
ITOCHU Corporation - Headquarters
BAADER - Nordischer Maschinenbau Rud. Baader GmbH+Co.KG (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Sea Harvest Corporation (PTY) Ltd. - Group Headquarters
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
AquaChile S.A. - Group Headquarters
Pesquera San Jose S.A.
Nutreco N.V. - Head Office
CNFC China National Fisheries Corporation - Group Headquarters
W. van der Zwan & Zn. B.V.
SMMI - Sunderland Marine Mutual Insurance Co., Ltd. - Headquarters
Icicle Seafoods, Inc
Starkist Seafood Co. - Headquearters
Trident Seafoods Corp.
American Seafoods Group LLC - Head Office
Marel - Group Headquarters
SalMar ASA - Group Headquarters
Sajo Industries Co., Ltd
Hansung Enterprise Co.,Ltd.
BIM - Irish Sea Fisheries Board (An Bord Iascaigh Mhara)
CEFAS - Centre for Environment, Fisheries & Aquaculture Science
COPEINCA ASA - Corporacion Pesquera Inca S.A.C.
Chun Cheng Fishery Enterprise Pte Ltd.
VASEP - Vietnam Association of Seafood Exporters & Producers
Gomes da Costa
Furuno Electric Co., Ltd. (Headquarters)
NISSUI - Nippon Suisan Kaisha, Ltd. - Group Headquarters
FAO - Food and Agriculture Organization - Fisheries and Aquaculture Department (Headquarter)
Hagoromo Foods Co., Ltd.
Koden Electronics Co., Ltd. (Headquarters)
A.P. Møller - Maersk A/S - Headquarters
BVQI - Bureau Veritas Quality International (Head Office)
UPS - United Parcel Service, Inc. - Headquarters
Brim ehf (formerly HB Grandi Ltd) - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Mowi ASA (formerly Marine Harvest ASA) - Headquarters
Marubeni Europe Plc -UK-
Findus Ltd
Icom Inc. (Headquarter)
WWF Centroamerica
Oceana Group Limited
The David and Lucile Packard Foundation
Ajinomoto Co., Inc. - Headquarters
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
CJ Corporation  - Group Headquarters
Greenpeace International - The Netherlands | Headquarters
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
NOREBO Group (former Ocean Trawlers Group)
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation - Headquarters
Cooke Inc. - Group Headquarters
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart | Wal-Mart Stores, Inc. (Supermarket) - Headquarters
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
Marine Stewardship Council - MSC Worldwide Headquarters
Royal Dutch Shell plc (Headquarter)
Genki Sushi Co.,Ltd -Headquarter-
Iceland Pelagic ehf
AXA Assistance Argentina S.A.
Caterpillar Inc. - Headquarters
Tiger Brands Limited
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2021 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER