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


Acoustic monitoring can be used as a tool to monitor biodiversity

Spiny lobsters raise an undersea racket that can be heard miles away

WORLDWIDE
Friday, May 29, 2020, 05:00 (GMT + 9)

  • European spiny lobsters can create a sound that might, under the right conditions, be detectable up to 3 kilometers, nearly 2 miles, away.
  • Researchers used underwater microphones to determine how loud lobsters are, and found that the larger the lobster, the louder the sound.
  • Spiny lobsters were overharvested in the 1970s, and though populations have rebounded, there is still a need to monitor population levels.
  • The study suggests that lobsters may be a candidate for acoustic monitoring.

European spiny lobsters create quite the rumble. By rubbing an antenna across its face, a spiny lobster can create a sound that might, under the right underwater conditions, be detectable up to 3 kilometers (1.9 miles) away.The sound, known as an antennal rasp, occurs when an extension of a lobster’s antennae moves across a rough patch under its eye. Lobsters likely make this sound for communication or to scare away predators.

In a recently published study in Scientific Reports, researchers asked, how far does the sound of a rasp travel? And can these sounds be used in a non-invasive way to monitor lobster populations?

A large spiny lobster held by a scuba diver during a bioacoustic experiment. Photo by Erwan AMICE/CNRS.►

Spiny lobsters (Palinurus elephas) are found in the Eastern Atlantic Ocean and in the Mediterranean Sea. Intensive fishing of lobsters for food in the 1960s and 1970s made spiny lobsters scarce in European waters and even led to local extinctions off southwest Britain. Though populations have rebounded, there remains a need to monitor and manage lobster populations from overharvesting.

Using hydrophones (underwater microphones that record sound from all directions), researchers recorded 1,560 antennal rasps from 24 individual lobsters in the Bay of Saint Anne du Portzic, France. They placed hydrophones at distances of 10, 20, 50 and 100 meters (33 to 330 feet) away from each lobster. The largest lobsters (with a carapace, or body shell, 13.5 centimeters long, or about 5 inches) made sounds detectable at 100 m distance; in general, the larger the lobster, the louder the sound.


Audio1: Antennal rasp produced by a small-sized (20 grams) spiny lobster. Credit: Youenn Jézéquel © UBO

Audio 2: Antennal rasp produced by an intermediate-sized (200 grams) spiny lobster. Credit: Youenn Jézéquel © UBO

Audio 3: Antennal rasp produced by a large-sized (2 kilograms) spiny lobster. Credit: Youenn Jézéquel © UBO

The density of seawater allows sounds to travel over greater distances compared to air. However, sound is still lost in the water, and noise pollution can get in the way of a good recording. Seismic surveys, used in oil and gas exploration, are one of the most common sources of noise pollution.(continue...)

Author:  Liz Kimbrough / news.mongabay.com | Read full article here 

[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
South Korea
Jul 10, 17:30 (GMT + 9):
Dongwon Group signs MOU with National Fisheries Research and Development Institute to develop 'fisheries industry'
Worldwide
Jul 10, 17:00 (GMT + 9):
Other Media | SeafoodSource: Industry leaders say transparency is key to global aquaculture sustainability
Spain
Jul 10, 15:00 (GMT + 9):
Nodosa Shipyard launched the trawler Montelourido that will operate in Falkland Islands
Namibia
Jul 10, 14:30 (GMT + 9):
Samherji Press Release: No jobs were lost in Namibia
Netherlands
Jul 10, 13:00 (GMT + 9):
Other Media | SalmonBusiness: Smoked trout linked to two fatal cases in listeria outbreak in the Netherlands
United Kingdom
Jul 10, 11:50 (GMT + 9):
Other Media | fishfarmingexpert : Loch Duart and Cargill fund Scourie broadband boost
Iceland
Jul 10, 11:00 (GMT + 9):
Other Media | Fish Farmer:Major expansion from Icelandic salmon company
Australia
Jul 10, 10:20 (GMT + 9):
Other Media | FiskerForum: Austral's newbuild heads south
Japan
Jul 10, 06:30 (GMT + 9):
Jetro will support the overseas business of Japanese companies through the exhibition business Alibaba.com
United States
Jul 10, 05:30 (GMT + 9):
GAA Upcoming Webinar: Virtual Stakeholder Update Meeting
Chile
Jul 10, 04:10 (GMT + 9):
Urgent right now TC debates inapplicability of the giant squid Law
Peru
Jul 10, 03:30 (GMT + 9):
Jack mackerel resource increases in the Peruvian sea (video)
United Kingdom
Jul 10, 03:00 (GMT + 9):
COVID-19: Making Crew Changes Safer (video)
Spain
Jul 10, 03:00 (GMT + 9):
Galician coast guard uses FLIR thermal cameras to fight illegal fishing
United States
Jul 10, 00:00 (GMT + 9):
Statistics│Export│Frozen products of Pacific whiting and Alaska pollock | 2019-20



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Dorset Fisherman buoyed by Waitrose support
United Kingdom Waitrose has become the first major UK supermarket chain to sell MSC certified British clams, which are now on sale at counters across 150 of its stores, with sustainable British cockles due to en...
Alaska Fish prices and production for 2019 provide pre-Covid base
United States While this summer’s salmon prices still remain mostly under wraps the Covid-virus has pushed down prices for other popular species. Halibut, for example, is below $4 a pound at several major po...
23% of Spaniards have increased delivery consumption in restaurants during confinement
Spain · The II Barometer of Trends in Restaurants, promoted by Unilever Food Solutions, Facyre and Hospitality of Spain, highlights that 63% of respondents have ordered food at home during the pandem...
Yanmar to Develop Hydrogen Fuel Cell System for Maritime Applications
Japan Osaka - Yanmar Holdings Co., Ltd. and its subsidiary Yanmar Power Technology Co., Ltd. have announced the development of a hydrogen fuel cell system for maritime applications based on fuel cell techno...
 
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 - 2020 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER