Cargando…

Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia)

The Tigray region is an ancient entry route for the domestic chickens into Africa. The oldest African chicken bones were found in this region at Mezber, a pre-Aksumite rural farming settlement. They were dated to around 800–400 BCE. Since then, the farming communities of the region have integrated c...

Descripción completa

Detalles Bibliográficos
Autores principales: Gebru, Gebreslassie, Belay, Gurja, Vallejo-Trujillo, Adriana, Dessie, Tadelle, Gheyas, Almas, Hanotte, Olivier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9561088/
https://www.ncbi.nlm.nih.gov/pubmed/36246589
http://dx.doi.org/10.3389/fgene.2022.968961
_version_ 1784807871503925248
author Gebru, Gebreslassie
Belay, Gurja
Vallejo-Trujillo, Adriana
Dessie, Tadelle
Gheyas, Almas
Hanotte, Olivier
author_facet Gebru, Gebreslassie
Belay, Gurja
Vallejo-Trujillo, Adriana
Dessie, Tadelle
Gheyas, Almas
Hanotte, Olivier
author_sort Gebru, Gebreslassie
collection PubMed
description The Tigray region is an ancient entry route for the domestic chickens into Africa. The oldest African chicken bones were found in this region at Mezber, a pre-Aksumite rural farming settlement. They were dated to around 800–400 BCE. Since then, the farming communities of the region have integrated chicken into their livelihoods. The region is also recognised for its high chicken-to-human population ratio and diverse and complex geography, ranging from 500 to 4,000 m above sea level (m.a.s.l.). More than 15 agro-ecological zones have been described. Following exotic chicken introductions, the proportion of indigenous chicken is now 70% only in the region. It calls for the characterisation of indigenous Tigrayan chicken ecotypes and their habitats. This study reports an Ecological Niche Modelling using MaxEnt to characterise the habitats of 16 indigenous village chicken populations of Tigray. A total of 34 ecological and landscape variables: climatic (22), soil (eight), vegetation, and land cover (four), were included. We applied Principal Component Analysis correlation, and MaxentVariableSelection procedures to select the most contributing and uncorrelated variables. The selected variables were three climatic (bio5 = maximum temperature of the warmest month, bio8 = mean temperature of the wettest quarter, bio13 = precipitation of the wettest month), three vegetation and land cover (grassland, forest land, and cultivated land proportional areas), and one soil (clay content). Following our analysis, we identified four main chicken agro-ecologies defining four candidates indigenous Tigrayan chicken ecotypes. The study provides baseline information for phenotypic and genetic characterisation as well as conservation interventions of indigenous Tigrayan chickens.
format Online
Article
Text
id pubmed-9561088
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-95610882022-10-15 Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia) Gebru, Gebreslassie Belay, Gurja Vallejo-Trujillo, Adriana Dessie, Tadelle Gheyas, Almas Hanotte, Olivier Front Genet Genetics The Tigray region is an ancient entry route for the domestic chickens into Africa. The oldest African chicken bones were found in this region at Mezber, a pre-Aksumite rural farming settlement. They were dated to around 800–400 BCE. Since then, the farming communities of the region have integrated chicken into their livelihoods. The region is also recognised for its high chicken-to-human population ratio and diverse and complex geography, ranging from 500 to 4,000 m above sea level (m.a.s.l.). More than 15 agro-ecological zones have been described. Following exotic chicken introductions, the proportion of indigenous chicken is now 70% only in the region. It calls for the characterisation of indigenous Tigrayan chicken ecotypes and their habitats. This study reports an Ecological Niche Modelling using MaxEnt to characterise the habitats of 16 indigenous village chicken populations of Tigray. A total of 34 ecological and landscape variables: climatic (22), soil (eight), vegetation, and land cover (four), were included. We applied Principal Component Analysis correlation, and MaxentVariableSelection procedures to select the most contributing and uncorrelated variables. The selected variables were three climatic (bio5 = maximum temperature of the warmest month, bio8 = mean temperature of the wettest quarter, bio13 = precipitation of the wettest month), three vegetation and land cover (grassland, forest land, and cultivated land proportional areas), and one soil (clay content). Following our analysis, we identified four main chicken agro-ecologies defining four candidates indigenous Tigrayan chicken ecotypes. The study provides baseline information for phenotypic and genetic characterisation as well as conservation interventions of indigenous Tigrayan chickens. Frontiers Media S.A. 2022-09-30 /pmc/articles/PMC9561088/ /pubmed/36246589 http://dx.doi.org/10.3389/fgene.2022.968961 Text en Copyright © 2022 Gebru, Belay, Vallejo-Trujillo, Dessie, Gheyas and Hanotte. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Genetics
Gebru, Gebreslassie
Belay, Gurja
Vallejo-Trujillo, Adriana
Dessie, Tadelle
Gheyas, Almas
Hanotte, Olivier
Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia)
title Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia)
title_full Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia)
title_fullStr Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia)
title_full_unstemmed Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia)
title_short Ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of Tigray (Ethiopia)
title_sort ecological niche modelling as a tool to identify candidate indigenous chicken ecotypes of tigray (ethiopia)
topic Genetics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9561088/
https://www.ncbi.nlm.nih.gov/pubmed/36246589
http://dx.doi.org/10.3389/fgene.2022.968961
work_keys_str_mv AT gebrugebreslassie ecologicalnichemodellingasatooltoidentifycandidateindigenouschickenecotypesoftigrayethiopia
AT belaygurja ecologicalnichemodellingasatooltoidentifycandidateindigenouschickenecotypesoftigrayethiopia
AT vallejotrujilloadriana ecologicalnichemodellingasatooltoidentifycandidateindigenouschickenecotypesoftigrayethiopia
AT dessietadelle ecologicalnichemodellingasatooltoidentifycandidateindigenouschickenecotypesoftigrayethiopia
AT gheyasalmas ecologicalnichemodellingasatooltoidentifycandidateindigenouschickenecotypesoftigrayethiopia
AT hanotteolivier ecologicalnichemodellingasatooltoidentifycandidateindigenouschickenecotypesoftigrayethiopia