Feeding activity of pikeperch (Sander lucioperca) under winter and spring photothermal conditions of pre-spawning period

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F20%3A43900810" target="_blank" >RIV/60076658:12520/20:43900810 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1111/are.14401" target="_blank" >https://doi.org/10.1111/are.14401</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/are.14401" target="_blank" >10.1111/are.14401</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Feeding activity of pikeperch (Sander lucioperca) under winter and spring photothermal conditions of pre-spawning period

Popis výsledku v původním jazyce

This study investigated foraging behavior of pikeperch (Sander lucioperca) broodstock specifically the effect of predator’s sex, prey size preference and water temperature on feeding activity. The experimental design consisted of three temperature trials: 4.5 °C, 8.5 °C and 12.5 °C of 12 days duration and 7 days in between for adaptation and gradual change of photo-thermal regime. Prey size range included large (PPR = 0.18; predator-prey ratio), medium (PPR = 0.13), and small (PPR = 0.11) fish. The consumption of prey fish (Pseudorasbora parva) significantly increased with water temperature rise from 4.5°C to 8.5 °C. Female consumption rates were higher throughout the experiment and responded faster to increased water temperature in comparison to males. The highest relative daily consumption rate was observed at 12.5 °C with females consuming 19.7 ± 6.09 g of prey and males consuming 15.8 ± 4.7 g of prey per kilogram of their body weight. Preference for the largest available prey (PPR = 0.18) became significant at water temperatures of 8.5 °C and 12.5 °C for males and females respectively. These result will improve our understanding of winter and pre-spawning predatory behavior of pikeperch, contributing to broodstock management and increasing control during pond-culture.

Název v anglickém jazyce

Feeding activity of pikeperch (Sander lucioperca) under winter and spring photothermal conditions of pre-spawning period

Popis výsledku anglicky

This study investigated foraging behavior of pikeperch (Sander lucioperca) broodstock specifically the effect of predator’s sex, prey size preference and water temperature on feeding activity. The experimental design consisted of three temperature trials: 4.5 °C, 8.5 °C and 12.5 °C of 12 days duration and 7 days in between for adaptation and gradual change of photo-thermal regime. Prey size range included large (PPR = 0.18; predator-prey ratio), medium (PPR = 0.13), and small (PPR = 0.11) fish. The consumption of prey fish (Pseudorasbora parva) significantly increased with water temperature rise from 4.5°C to 8.5 °C. Female consumption rates were higher throughout the experiment and responded faster to increased water temperature in comparison to males. The highest relative daily consumption rate was observed at 12.5 °C with females consuming 19.7 ± 6.09 g of prey and males consuming 15.8 ± 4.7 g of prey per kilogram of their body weight. Preference for the largest available prey (PPR = 0.18) became significant at water temperatures of 8.5 °C and 12.5 °C for males and females respectively. These result will improve our understanding of winter and pre-spawning predatory behavior of pikeperch, contributing to broodstock management and increasing control during pond-culture.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Aquaculture Research

ISSN

1355-557X

e-ISSN

1365-2109

Svazek periodika

51

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

000497466000001

EID výsledku v databázi Scopus

2-s2.0-85075397797