Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight

Abstract Nile tilapia is predominantly produced in smallholder ponds without aeration. We hypothesize that Nile tilapia with high oxygen uptake efficiency (O2UE) may perform better under these conditions than Nile tilapia with low O2UE. Critical swimming speed (U crit, in cm s−1) is a potential indi...

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Autores principales:	Samuel Bekele Mengistu, Arjan P. Palstra, Han A. Mulder, John A. H. Benzie, Trong Quoc Trinh, Chantal Roozeboom, Hans Komen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fd0d38d151aa4e0b8954835143debffa
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spelling	oai:doaj.org-article:fd0d38d151aa4e0b8954835143debffa2021-12-02T14:49:24ZHeritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight10.1038/s41598-021-90418-w2045-2322https://doaj.org/article/fd0d38d151aa4e0b8954835143debffa2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90418-whttps://doaj.org/toc/2045-2322Abstract Nile tilapia is predominantly produced in smallholder ponds without aeration. We hypothesize that Nile tilapia with high oxygen uptake efficiency (O2UE) may perform better under these conditions than Nile tilapia with low O2UE. Critical swimming speed (U crit, in cm s−1) is a potential indicator for O2UE. Our objectives were to estimate variance components for U crit and fish size at swim testing early in life, and genetic correlations (r g ) between U crit with harvest weight (HW) and daily growth coefficient (DGC) later after grow-out in a non-aerated pond. Substantial heritability was found for absolute U crit (0.48). The estimated r g between absolute U crit and fish size at testing were all strong and positive (range 0.72–0.83). The estimated r g between absolute U crit and HW, and absolute U crit and DGC were − 0.21 and − 0.63 respectively, indicating that fish with higher absolute U crit had lower growth in the non-aerated pond as compared to fish with lower absolute U crit. These results suggest a juvenile trade-off between swimming and growth performance where fish with high U crit early in life show slower growth later under conditions of limited oxygen availability. We conclude that U crit in Nile tilapia is heritable and can be used to predict growth performance.Samuel Bekele MengistuArjan P. PalstraHan A. MulderJohn A. H. BenzieTrong Quoc TrinhChantal RoozeboomHans KomenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Samuel Bekele Mengistu Arjan P. Palstra Han A. Mulder John A. H. Benzie Trong Quoc Trinh Chantal Roozeboom Hans Komen Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight
description	Abstract Nile tilapia is predominantly produced in smallholder ponds without aeration. We hypothesize that Nile tilapia with high oxygen uptake efficiency (O2UE) may perform better under these conditions than Nile tilapia with low O2UE. Critical swimming speed (U crit, in cm s−1) is a potential indicator for O2UE. Our objectives were to estimate variance components for U crit and fish size at swim testing early in life, and genetic correlations (r g ) between U crit with harvest weight (HW) and daily growth coefficient (DGC) later after grow-out in a non-aerated pond. Substantial heritability was found for absolute U crit (0.48). The estimated r g between absolute U crit and fish size at testing were all strong and positive (range 0.72–0.83). The estimated r g between absolute U crit and HW, and absolute U crit and DGC were − 0.21 and − 0.63 respectively, indicating that fish with higher absolute U crit had lower growth in the non-aerated pond as compared to fish with lower absolute U crit. These results suggest a juvenile trade-off between swimming and growth performance where fish with high U crit early in life show slower growth later under conditions of limited oxygen availability. We conclude that U crit in Nile tilapia is heritable and can be used to predict growth performance.
format	article
author	Samuel Bekele Mengistu Arjan P. Palstra Han A. Mulder John A. H. Benzie Trong Quoc Trinh Chantal Roozeboom Hans Komen
author_facet	Samuel Bekele Mengistu Arjan P. Palstra Han A. Mulder John A. H. Benzie Trong Quoc Trinh Chantal Roozeboom Hans Komen
author_sort	Samuel Bekele Mengistu
title	Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight
title_short	Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight
title_full	Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight
title_fullStr	Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight
title_full_unstemmed	Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight
title_sort	heritable variation in swimming performance in nile tilapia (oreochromis niloticus) and negative genetic correlations with growth and harvest weight
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fd0d38d151aa4e0b8954835143debffa
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Heritable variation in swimming performance in Nile tilapia (Oreochromis niloticus) and negative genetic correlations with growth and harvest weight

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