Use of high-frequency imaging sonar (DIDSON) to observe fish behaviour towards a surface trawl

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F12%3A00377852" target="_blank" >RIV/60077344:_____/12:00377852 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.fishres.2011.11.018" target="_blank" >http://dx.doi.org/10.1016/j.fishres.2011.11.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fishres.2011.11.018" target="_blank" >10.1016/j.fishres.2011.11.018</a>

Result language

angličtina

Original language name

Use of high-frequency imaging sonar (DIDSON) to observe fish behaviour towards a surface trawl

Original language description

Observing and quantifying fish behaviour towards active sampling gears like trawls is challenging. A high-frequency imaging sonar (DIDSON) was applied to directly observe and record fish avoidance behaviour in front of the mouth of an active pelagic surface trawl in the meso- to eutrophic Czech reservoir Želivka in August 2009. In this multi-species environment the fish displayed a variety of behavioural patterns. We classified 11 different categories of avoidance (n = 1051) based on fish reaction and swimming behaviour towards the active trawl using Sonar5-Pro software. Classification of these categories was based on eight continuous variables: (1) total fish length, (2) distance to the trawl, (3) tortuosity, (4) mean speed of total track, (5) mean speed of first avoidance track, (6) mean speed of total avoidance track, (7) angle between initial and first avoidance track and (8) angle between initial and total avoidance track. The acoustic analysis showed that 76% of the fish in trawl

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EH - Ecology - communities

OECD FORD branch

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Project

<a href="/en/project/GA206%2F07%2F1392" target="_blank" >GA206/07/1392: Horizontal acoustic surveys and fish behaviour in the open water</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Fisheries Research

ISSN

0165-7836

e-ISSN

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Volume of the periodical

123

Issue of the periodical within the volume

July

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

37-48

UT code for WoS article

000304222800007

EID of the result in the Scopus database

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