Počet záznamů: 1

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

SYSNO ASEP	0349531
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages
Tvůrce(i)	Jůza, T. (CZ) Čech, Martin (BC-A)_{RID, ORCID} Kubečka, Jan (BC-A)_{RID, ORCID} Vašek, Mojmír (BC-A)_{RID, ORCID} Peterka, Jiří (BC-A)_{RID, ORCID} Matěna, Josef (BC-A)_RID
Zdroj.dok.	Fisheries Research. - : Elsevier - ISSN 0165-7836 Roč. 105, č. 3 (2010), s. 125-133
Poč.str.	9 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	trawl efficiency ; fry density ; perch
Vědní obor RIV	EH - Ekologie - společenstva
CEP	GP206/09/P266 GA ČR - Grantová agentura ČR
	1QS600170504 GA AV ČR - Akademie věd
CEZ	AV0Z60170517 - HBU-Z, BC-A (2005-2011)
UT WOS	000281181500001
DOI	10.1016/j.fishres.2010.03.010
Anotace	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.
Pracoviště	Biologické centrum (od r. 2006)
Kontakt	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Rok sběru	2011

Počet záznamů: 1