The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F10%3A00349531" target="_blank" >RIV/60077344:_____/10:00349531 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/10:00011916

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages

Original language description

The efficiency of different sized and coloured trawls were investigated in surface stratum of the Římov Reservoir during two surveys in spring 2007. No significant differences in efficiency and body lengths of the fry were found for any taxa when black and white trawls were compared. Comparison of the efficiencies of different sized trawls revealed different patterns for the dominant perch and cyprinids during both day and night. For perch, the lowest efficiency was observed for the smallest trawl, whereas the greatest efficiency was observed for the largest trawl. The efficiencies were significantly different between trawls during day and night only for perch. For cyprinids, the efficiencies of different sized trawls were insignificantly different during both day and night. Our results indicate that for sampling perch fry during both day and night, trawl with a 1 m2 mouth is not sufficiently efficient and the density of perch fry is significantly under estimated with such small net.

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

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

105

Issue of the periodical within the volume

3

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

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UT code for WoS article

000281181500001

EID of the result in the Scopus database

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