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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/GA206%2F07%2F1392" target="_blank" >GA206/07/1392: Horizontální akustické průzkumy a chování ryb ve volné vodě</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Fisheries Research

ISSN

0165-7836

e-ISSN

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Svazek periodika

123

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

37-48

Kód UT WoS článku

000304222800007

EID výsledku v databázi Scopus

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