Welcome   Sponsored By
Subscribe | Register | Advertise | Newsletter | About us | Contact us
   


: Juan Carlos Gutiérrez-Estrada, Alejandro Garrocho-Cruz, Antonio Peregrín-Rubio, Fernando Gómez-Bravo, Samuel López-Domínguez, Jairo Castro-Gutiérrez

A non-invasive system that automatically counts the quantity and size of aquaculture fish

Click on the flag for more information about Spain SPAIN
Thursday, May 19, 2022, 07:10 (GMT + 9)

The following is an excerpt from an article published by Fundacion Descubre:

A multidisciplinary team of experts from the University of Huelva combines an instrument that captures underwater images and software to more accurately estimate the number of sea bream in fish farm ponds, as well as their length and weight. The novelty of this methodology is that the counting of the specimens occurs without interfering with their environment and, therefore, does not generate stress or increase mortality among the specimens.

A multidisciplinary team from the University of Huelva has developed a non-invasive system that more accurately counts the number of fish inside a raft. In addition, it allows the size and weight of the specimens to be determined without manipulating them or breaking the harmony of their environment, thus avoiding an increase in the mortality rate of these animals and the appearance of stress.

To obtain these results, experts have used a device commonly used in sport and commercial fishing that, when identifying the presence of a fish, captures images similar to ultrasound, called static multibeam sonar. All this information obtained is dumped into a software designed entirely by this team of experts. Its function is to determine the number, size, weight and length of the fish according to their aggregation behavior, that is, from their movement, either individually or in a group.

Unlike traditional methods to estimate the number of specimens in fish farms, which require manual work, the main advantage of this methodology is its safety towards fish. "The main problem for aquaculturists when they introduce the young into the rafts is that at the same time they don't know how many there are and how big they have reached," the University of Huelva researcher Juan Carlos Gutiérrez Estrada, the main author of the study, explains to the Discover Foundation. 

Until now, the usual procedure for counting the fish in a culture pond is based on the management of the pond itself, that is, the partial emptying of the water it contains, the interference of operators to take a representative sample, measure and weigh them. "All this also causes a higher rate of mortality and stress among these animals," says Gutiérrez.

As detailed in the study entitled 'Fish abundance estimation with imaging sonar in semi-intensive aquaculture ponds' and published in the journal Aquacultural Engineering, they have worked with specimens of sea bream (Sparus aurata) raised in estuaries of the Salinas del Astur, located in the Huelva town of Punta Umbría. In these ponds, the sea bream grows from a weight of 30 to 100 grams to commercial weights, which are around 400 grams approximately.

To accurately estimate the number of specimens in a culture pond, as well as their weight and size, this team of experts has used a static sonar that has been marked with specific spatial limits, up to six meters. In this range, the presence of fish interferes, which are mostly captured as spots in the images. (continues...)

Source: Fundacion Descubre / Read the full article by clickingthe link here


www.seafood.media


 Print


Click to know how to advertise in FIS
MORE NEWS
Peru
Jun 29, 07:00 (GMT + 9):
PRODUCE authorize the extraction of bonito for vessels with fishing permits
Seychelles
Jun 29, 07:00 (GMT + 9):
Investigation into ammonia leak on Spanish tuna vessel begins in Seychelles
Australia
Jun 29, 07:00 (GMT + 9):
Tassal entry is not Cooke’s first rodeo
Argentina
Jun 29, 04:50 (GMT + 9):
New shrimp prospecting and closure of subarea 15
Norway
Jun 29, 04:00 (GMT + 9):
The Norwegian Pelagic Fishing Course in Week 25
Argentina
Jun 29, 00:00 (GMT + 9):
Other Media | Industrias Pesqueras: CeDePesca affirms that the certification of Argentine shrimp is
Argentina
Jun 28, 10:30 (GMT + 9):
Exports with a slight drop in May
Norway
Jun 28, 07:00 (GMT + 9):
Successful smolt release
South Korea
Jun 28, 07:00 (GMT + 9):
Corean import of frozen boiled welk meat
China
Jun 28, 07:00 (GMT + 9):
Fujian's first abalone processing industrial park settled in Putian Xiuyu
Russian Federation
Jun 28, 07:00 (GMT + 9):
Japan will not fish for salmon in the economic zone of the Russian Federation
New Zealand
Jun 28, 07:00 (GMT + 9):
NZ King Salmon's Blue Endeavour may require a capital raise
United States
Jun 28, 07:00 (GMT + 9):
Current Foods Closes $18M Seed Round to Launch Plant-Based Smoked Salmon into Retail
European Union
Jun 28, 01:00 (GMT + 9):
Unilateral quotas on mackerel established by Norway and Faroe Islands
Japan
Jun 28, 00:50 (GMT + 9):
Frozen tuna presentation │ Toyosu Market │ until 21-June-2022



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Patagonian toothfish: US-UK diplomatic friction over fishing off the Falkland's
United States The following is an excerpt from an article published by Associated Press: MIAMI (AP) — It's one of the most expensive fish in the world. It sells for $32 a pound (450 grams) in Whole Foods s...
The Argentine Government denounces British ships for illegal fishing in the vicinity of the South Georgia Islands
Argentina The Foreign Ministry warned about the irregularity and considered that the United Kingdom does not comply with the regulations The Argentine Foreign Ministry denounced today that British-flagged fi...
Exports with a slight drop in May
Argentina According to data provided by CAPECA, foreign sales registered a 1.6% decline compared to the same period in 2021. In the first 5 months of 2022 there were sales of 674 million dollars. The biggest fa...
Pacific fishery council recommends tuna catch limit
Guam The Western and Central Pacific Fishery Council has recommended setting a 2023 catch limit of 2,000 metric tons of bigeye tuna each for Guam, the Northern Marianas and American Samoa. “Each U...
 

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. - Grupo Pereira Headquarters
Costa Meeresspezialitäten GmbH & Co. KG
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 - 2022 Seafood Media Group Ltd.| All Rights Reserved.   DISCLAIMER