Effect of temperature and oxygen regime on growth and physiology of juvenile Salvelinus fontinalis x Salvelinus alpinus hybrids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F20%3A43900849" target="_blank" >RIV/60076658:12520/20:43900849 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.aquaculture.2020.735119" target="_blank" >https://doi.org/10.1016/j.aquaculture.2020.735119</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquaculture.2020.735119" target="_blank" >10.1016/j.aquaculture.2020.735119</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of temperature and oxygen regime on growth and physiology of juvenile Salvelinus fontinalis x Salvelinus alpinus hybrids

Popis výsledku v původním jazyce

Effect of oxygen saturation and thermal regimes on growth and selected physiological indicators of juvenile Salvelinus fontinalis x Salvelinus alpinus hybrids were investigated in separate experiments. Hybrid status of tested fish, with S. fontinalis as the maternal species, was confirmed by sequence analysis. During both experiments fish doubled their initial weight in most tested groups. In experiment 1, fish (n = 516, 70.6 +/- 1.5 g) were exposed to one of four oxygen regimes (normal, hyperoxic, 12 h alternating normal/hyperoxic, and 24 h alternating normal/hyperoxic) in triplicate (12 rearing tanks of four separate RAS) for 63 days. More favourable growth parameters were observed under normoxic conditions (85-95%) in comparison with hyperoxia (120-130%). Oxygen saturation was not associated with final feed conversion ratio, size variation, condition factor, selected somatic indices, or overall mortality rate. Oxygen saturation was significantly positively associated with leukocyte count and negatively associated with mean corpuscular haemoglobin concentration. Gills showed slight to moderate atypia in groups exposed to hyperoxia compared to the normoxia group. In experiment 2, fish (n. = 560, 21.7 +/- 0.3 g) were held in 7, 10, 13, or 16 degrees C water in four repetitions (16 rearing tanks of four separate RAS) for an 84-day period. Selected growth parameters were significantly higher at 13 degrees C than at 7, 10, and 16 degrees C. Feed conversion ratio was the lowest at 13 and 16 degrees C. Size variation and somatic indices exhibited no differences among treatments, while condition factor was significantly higher at 10 and 13 degrees C. Mortality rate increased from 1.4% to 30.5% with rise in temperature, with highest mortality recorded at 16 degrees C. Hyperoxia showed no advantage on growth of tested hybrids, while 13 degrees C was optimal water temperature for their culture.

Název v anglickém jazyce

Effect of temperature and oxygen regime on growth and physiology of juvenile Salvelinus fontinalis x Salvelinus alpinus hybrids

Popis výsledku anglicky

Effect of oxygen saturation and thermal regimes on growth and selected physiological indicators of juvenile Salvelinus fontinalis x Salvelinus alpinus hybrids were investigated in separate experiments. Hybrid status of tested fish, with S. fontinalis as the maternal species, was confirmed by sequence analysis. During both experiments fish doubled their initial weight in most tested groups. In experiment 1, fish (n = 516, 70.6 +/- 1.5 g) were exposed to one of four oxygen regimes (normal, hyperoxic, 12 h alternating normal/hyperoxic, and 24 h alternating normal/hyperoxic) in triplicate (12 rearing tanks of four separate RAS) for 63 days. More favourable growth parameters were observed under normoxic conditions (85-95%) in comparison with hyperoxia (120-130%). Oxygen saturation was not associated with final feed conversion ratio, size variation, condition factor, selected somatic indices, or overall mortality rate. Oxygen saturation was significantly positively associated with leukocyte count and negatively associated with mean corpuscular haemoglobin concentration. Gills showed slight to moderate atypia in groups exposed to hyperoxia compared to the normoxia group. In experiment 2, fish (n. = 560, 21.7 +/- 0.3 g) were held in 7, 10, 13, or 16 degrees C water in four repetitions (16 rearing tanks of four separate RAS) for an 84-day period. Selected growth parameters were significantly higher at 13 degrees C than at 7, 10, and 16 degrees C. Feed conversion ratio was the lowest at 13 and 16 degrees C. Size variation and somatic indices exhibited no differences among treatments, while condition factor was significantly higher at 10 and 13 degrees C. Mortality rate increased from 1.4% to 30.5% with rise in temperature, with highest mortality recorded at 16 degrees C. Hyperoxia showed no advantage on growth of tested hybrids, while 13 degrees C was optimal water temperature for their 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

ISSN

0044-8486

e-ISSN

—

Svazek periodika

522

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000522956800020

EID výsledku v databázi Scopus

2-s2.0-85080044969