Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico

Background: Channel catfish are one of the most important aquaculture species raised for food purposes in Mexico. Two temporal samples were obtained from the largest channel catfish breeding hatchery in Mexico to identify changes in genetic diversity and inbreeding that are promoted by traditional h...

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Autores principales:	Parra-Bracamonte,Gaspar Manuel, Sifuentes-Rincón,Ana María, Rosa-Reyna,Xochitl Fabiola De la, Arellano-Vera,Williams, Sosa-Reyes,Brenda
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2011
Materias:	channel catfish effective population size genetic diversity inbreeding
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000600011
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spelling	oai:scielo:S0717-345820110006000112012-06-06Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in MexicoParra-Bracamonte,Gaspar ManuelSifuentes-Rincón,Ana MaríaRosa-Reyna,Xochitl Fabiola De laArellano-Vera,WilliamsSosa-Reyes,Brenda channel catfish effective population size genetic diversity inbreeding Background: Channel catfish are one of the most important aquaculture species raised for food purposes in Mexico. Two temporal samples were obtained from the largest channel catfish breeding hatchery in Mexico to identify changes in genetic diversity and inbreeding that are promoted by traditional hatchery management. Results: The genetic parameter analysis of 11 microsatellite loci showed no significant change in genetic diversity (p > 0.05). However, a significant heterozygosis deficiency was detected (p < 0.001), and genetic structure analysis indicated moderate differentiation between the temporally divided populations (F ST = 0.08). A moderate level of inbreeding and a slight increase of the inbreeding coefficient from 0.23 to 0.27 were the result of traditional hatchery practices. To achieve an effective population size, the temporal approach resulted in a limited number of breeders to maintain genetic variability. Conclusions: Although no significant change in genetic diversity parameters was found, the heterozygote deficiency and low effective number of breeders suggest that there is a risk for increased inbreeding. Thus, we propose the need for controlled reproductive management and the establishment of genetic programs in hatcheries. Molecular tools can provide valuable information to facilitate the achievement of these goals.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.14 n.6 20112011-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000600011en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	channel catfish effective population size genetic diversity inbreeding
spellingShingle	channel catfish effective population size genetic diversity inbreeding Parra-Bracamonte,Gaspar Manuel Sifuentes-Rincón,Ana María Rosa-Reyna,Xochitl Fabiola De la Arellano-Vera,Williams Sosa-Reyes,Brenda Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico
description	Background: Channel catfish are one of the most important aquaculture species raised for food purposes in Mexico. Two temporal samples were obtained from the largest channel catfish breeding hatchery in Mexico to identify changes in genetic diversity and inbreeding that are promoted by traditional hatchery management. Results: The genetic parameter analysis of 11 microsatellite loci showed no significant change in genetic diversity (p > 0.05). However, a significant heterozygosis deficiency was detected (p < 0.001), and genetic structure analysis indicated moderate differentiation between the temporally divided populations (F ST = 0.08). A moderate level of inbreeding and a slight increase of the inbreeding coefficient from 0.23 to 0.27 were the result of traditional hatchery practices. To achieve an effective population size, the temporal approach resulted in a limited number of breeders to maintain genetic variability. Conclusions: Although no significant change in genetic diversity parameters was found, the heterozygote deficiency and low effective number of breeders suggest that there is a risk for increased inbreeding. Thus, we propose the need for controlled reproductive management and the establishment of genetic programs in hatcheries. Molecular tools can provide valuable information to facilitate the achievement of these goals.
author	Parra-Bracamonte,Gaspar Manuel Sifuentes-Rincón,Ana María Rosa-Reyna,Xochitl Fabiola De la Arellano-Vera,Williams Sosa-Reyes,Brenda
author_facet	Parra-Bracamonte,Gaspar Manuel Sifuentes-Rincón,Ana María Rosa-Reyna,Xochitl Fabiola De la Arellano-Vera,Williams Sosa-Reyes,Brenda
author_sort	Parra-Bracamonte,Gaspar Manuel
title	Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico
title_short	Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico
title_full	Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico
title_fullStr	Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico
title_full_unstemmed	Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico
title_sort	inbreeding evidence in a traditional channel catfish (ictalurus punctatus) hatchery in mexico
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000600011
work_keys_str_mv	AT parrabracamontegasparmanuel inbreedingevidenceinatraditionalchannelcatfishictaluruspunctatushatcheryinmexico AT sifuentesrinconanamaria inbreedingevidenceinatraditionalchannelcatfishictaluruspunctatushatcheryinmexico AT rosareynaxochitlfabioladela inbreedingevidenceinatraditionalchannelcatfishictaluruspunctatushatcheryinmexico AT arellanoverawilliams inbreedingevidenceinatraditionalchannelcatfishictaluruspunctatushatcheryinmexico AT sosareyesbrenda inbreedingevidenceinatraditionalchannelcatfishictaluruspunctatushatcheryinmexico
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Inbreeding evidence in a traditional channel catfish (Ictalurus punctatus) hatchery in Mexico

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