Great Cormorants Phalacrocorax carbo feed on larger fish in late winter

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F18%3A00494728" target="_blank" >RIV/60077344:_____/18:00494728 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/18:10378446

Výsledek na webu

<a href="http://dx.doi.org/10.1080/00063657.2018.1476459" target="_blank" >http://dx.doi.org/10.1080/00063657.2018.1476459</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/00063657.2018.1476459" target="_blank" >10.1080/00063657.2018.1476459</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Great Cormorants Phalacrocorax carbo feed on larger fish in late winter

Popis výsledku v původním jazyce

Capsule: Great Cormorants Phalacrocorax carbo prey on larger fish in late winter compared to early winter.Aims: This study aimed to describe Cormorant diet and to discover whether prey size changed during winter.Methods: The diet of Cormorants was studied using regurgitated pellets collected from roosting places at the upper Elbe River, Czech Republic, during winter (from December to March).Results: The diet consisted of 24 fish species from 6 fish families. Roach Rutilus rutilus dominated in the diet (over 50% of biomass). Size of fish in the diet increased over time during the whole winter. Except for European Chub Squalius cephalus, the increased size applied for the majority of the most frequently consumed fish species: Roach, European Perch Perca fluviatilis and White Bream Abramis brama. Cormorants consumed mostly fish species of lower commercial and angling value.Conclusion: Fisheries management should reflect on the fact that competition for larger-sized fish is the highest in late winter and in early spring. For that reason, stocking of potentially vulnerable fish could be delayed to the time when overwintering birds leave the area and recreational fishing could be restricted in late winter.

Název v anglickém jazyce

Great Cormorants Phalacrocorax carbo feed on larger fish in late winter

Popis výsledku anglicky

Capsule: Great Cormorants Phalacrocorax carbo prey on larger fish in late winter compared to early winter.Aims: This study aimed to describe Cormorant diet and to discover whether prey size changed during winter.Methods: The diet of Cormorants was studied using regurgitated pellets collected from roosting places at the upper Elbe River, Czech Republic, during winter (from December to March).Results: The diet consisted of 24 fish species from 6 fish families. Roach Rutilus rutilus dominated in the diet (over 50% of biomass). Size of fish in the diet increased over time during the whole winter. Except for European Chub Squalius cephalus, the increased size applied for the majority of the most frequently consumed fish species: Roach, European Perch Perca fluviatilis and White Bream Abramis brama. Cormorants consumed mostly fish species of lower commercial and angling value.Conclusion: Fisheries management should reflect on the fact that competition for larger-sized fish is the highest in late winter and in early spring. For that reason, stocking of potentially vulnerable fish could be delayed to the time when overwintering birds leave the area and recreational fishing could be restricted in late winter.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Bird Study

ISSN

0006-3657

e-ISSN

—

Svazek periodika

65

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

249-256

Kód UT WoS článku

000441045100011

EID výsledku v databázi Scopus

2-s2.0-85048772880