The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes

Restocking programmes of different fish species have been implemented worldwide. However, the survival of hatchery-reared fish after release to riverine ecosystems is at a very low level. One of the reasons for the high mortality rate of post-released fish is their modified swimming behaviour due to...

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Autores principales:	Tatyana Gebauer, Radek Gebauer, Petr Císař, Hung Quang Tran, Ondřej Tomášek, Peter Podhorec, Markéta Prokešová, Alexander Rebl, Vlastimil Stejskal
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Acipenser baerii</i> day/night feeding regimes modified swimming behaviour predator-free environment starvation recirculating aquaculture system Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/f28d26b6a6b04c1f9fd47c72a33beded
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spelling	oai:doaj.org-article:f28d26b6a6b04c1f9fd47c72a33beded2021-11-25T16:47:35ZThe Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes10.3390/biology101111622079-7737https://doaj.org/article/f28d26b6a6b04c1f9fd47c72a33beded2021-11-01T00:00:00Zhttps://www.mdpi.com/2079-7737/10/11/1162https://doaj.org/toc/2079-7737Restocking programmes of different fish species have been implemented worldwide. However, the survival of hatchery-reared fish after release to riverine ecosystems is at a very low level. One of the reasons for the high mortality rate of post-released fish is their modified swimming behaviour due to the hatchery rearing practice. To investigate one of the possible causes for modified swimming behaviour, <i>Acipenser baerii</i> larvae were exposed to surface- and bottom-feeding applications with day and night light regimes in a factorial design. We also analysed the effect of 5 and 10 days of starvation after different feeding applications on sturgeon swimming behaviour. The surface-feeding application was previously expected to promote the frequent Siberian sturgeon swim up to the mid- and top-water layers in our rearing facilities. However, our results indicated that the modified behaviour of the Siberian sturgeon in our study was caused by fish starvation and a possible predator-free environment rather than by the method of feed application or the day/night light regimes. These results may be used to improve the implementation of restocking programmes either through modified hatchery rearing practice or the training of foraging skills with predator stimuli.Tatyana GebauerRadek GebauerPetr CísařHung Quang TranOndřej TomášekPeter PodhorecMarkéta ProkešováAlexander ReblVlastimil StejskalMDPI AGarticle<i>Acipenser baerii</i>day/night feeding regimesmodified swimming behaviourpredator-free environmentstarvationrecirculating aquaculture systemBiology (General)QH301-705.5ENBiology, Vol 10, Iss 1162, p 1162 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Acipenser baerii</i> day/night feeding regimes modified swimming behaviour predator-free environment starvation recirculating aquaculture system Biology (General) QH301-705.5
spellingShingle	<i>Acipenser baerii</i> day/night feeding regimes modified swimming behaviour predator-free environment starvation recirculating aquaculture system Biology (General) QH301-705.5 Tatyana Gebauer Radek Gebauer Petr Císař Hung Quang Tran Ondřej Tomášek Peter Podhorec Markéta Prokešová Alexander Rebl Vlastimil Stejskal The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes
description	Restocking programmes of different fish species have been implemented worldwide. However, the survival of hatchery-reared fish after release to riverine ecosystems is at a very low level. One of the reasons for the high mortality rate of post-released fish is their modified swimming behaviour due to the hatchery rearing practice. To investigate one of the possible causes for modified swimming behaviour, <i>Acipenser baerii</i> larvae were exposed to surface- and bottom-feeding applications with day and night light regimes in a factorial design. We also analysed the effect of 5 and 10 days of starvation after different feeding applications on sturgeon swimming behaviour. The surface-feeding application was previously expected to promote the frequent Siberian sturgeon swim up to the mid- and top-water layers in our rearing facilities. However, our results indicated that the modified behaviour of the Siberian sturgeon in our study was caused by fish starvation and a possible predator-free environment rather than by the method of feed application or the day/night light regimes. These results may be used to improve the implementation of restocking programmes either through modified hatchery rearing practice or the training of foraging skills with predator stimuli.
format	article
author	Tatyana Gebauer Radek Gebauer Petr Císař Hung Quang Tran Ondřej Tomášek Peter Podhorec Markéta Prokešová Alexander Rebl Vlastimil Stejskal
author_facet	Tatyana Gebauer Radek Gebauer Petr Císař Hung Quang Tran Ondřej Tomášek Peter Podhorec Markéta Prokešová Alexander Rebl Vlastimil Stejskal
author_sort	Tatyana Gebauer
title	The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes
title_short	The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes
title_full	The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes
title_fullStr	The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes
title_full_unstemmed	The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes
title_sort	effect of different feeding applications on the swimming behaviour of siberian sturgeon: a method for improving restocking programmes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f28d26b6a6b04c1f9fd47c72a33beded
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The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes

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