Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep

Zühal Gündüz; Onur Yılmaz; Nezih Ata; Sabri Gül; Mahmut Keskin; İbrahim Cemal; Orhan Karaca

doi:10.18016/ksutarimdoga.vi.1767827

TR EN

İvesi Koyunlarında Darboğaz Dinamiklerine Mikrosatellit Tabanlı Bakış

Öz

İvesi koyunu, Türkiye’de özellikle süt verimi ve adaptasyon kabiliyeti bakımından stratejik öneme sahip yerli bir koyun ırkıdır. Bu çalışmada, Gaziantep ve Kilis illerinde yetiştirilen İvesi sürülerinden örneklenen 190 baş hayvan, 17 mikrosatellit lokusu kullanılarak genotiplendirilmiş ve popülasyonun genetik varyasyon düzeyi ile popülasyon yapısı değerlendirilmiştir. Toplam 306 allel belirlenmiş olup, lokus başına ortalama allel sayısı yüksek allelik zenginliğe işaret etmiştir. Ortalama gözlenen heterozigotluk (Ho = 0,72) değerinin beklenen heterozigotluk (He = 0,82) değerinden düşük olması, popülasyonda kısmi heterozigotluk eksikliği ve olası Wahlund etkisini düşündürmektedir. Sürü alt popülasyonları arasındaki genetik farklılaşma düzeyi oldukça düşük bulunmuş (FST = 0,019) ve bu sonuç popülasyonlar arası gen akışının sürdüğünü göstermiştir. Bayesian kümeleme analizi (STRUCTURE), coğrafi dağılımdan bağımsız olarak üç genetik alt kümelenmenin varlığını ortaya koymuştur. Bottleneck testleri, yakın dönemde etkili popülasyon büyüklüğünde (Ne) anlamlı bir daralma olmadığını göstermiştir. Bulgular, 2005 yılında başlatılan Halk Elinde Küçükbaş Hayvan Islahı Ülkesel Projesi kapsamında yürütülen seleksiyon programlarının genetik varyasyonu koruyacak şekilde uygulandığını ve popülasyonun uzun dönemli genetik sürdürülebilirliğinin sağlandığını göstermektedir.

Anahtar Kelimeler

Proje Numarası

ZRF-22008

Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep

Öz

Awassi sheep is a strategically important indigenous breed in Türkiye, particularly valued for its dairy performance and environmental adaptability. In this study, 190 individuals sampled from flocks in the Gaziantep and Kilis provinces were genotyped using 17 microsatellite loci to characterize genetic variability and population structure. A total of 306 alleles were detected, indicating substantial allelic richness. The mean observed heterozygosity (Ho = 0.72) was lower than the expected heterozygosity (He = 0.82), suggesting low to moderate heterozygote deficiency potentially attributable to subpopulation structure (Wahlund effect). Genetic differentiation among flock subpopulations was low (FST = 0.019), indicating ongoing gene flow and weak population subdivision. Bayesian clustering analysis implemented in STRUCTURE identified three genetic clusters independent of strict geographic boundaries. Bottleneck analyses revealed no evidence of a recent reduction in effective population size (Ne). These findings indicate that genetic diversity has been effectively maintained and support the long-term sustainability of the selection scheme conducted under the “National Genetic Breeding Project in Small Ruminants under Breeders' Conditions” initiated in 2005.

Anahtar Kelimeler

Proje Numarası

ZRF-22008

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

Zootekni, Genetik ve Biyoistatistik

Bölüm

Araştırma Makalesi

Yazarlar

Zühal Gündüz ^*
0000-0002-1427-1501
Türkiye

Onur Yılmaz
0000-0002-5658-8558
Türkiye

Nezih Ata
0000-0002-0387-5131
Türkiye

Sabri Gül
0000-0001-6787-8190
Türkiye

Mahmut Keskin
0000-0002-8147-2477
Türkiye

İbrahim Cemal
0000-0002-4069-4815
Türkiye

Orhan Karaca
0000-0002-7323-9173
Türkiye

Erken Görünüm Tarihi

20 Eylül 2026

Yayımlanma Tarihi

-

Gönderilme Tarihi

18 Ağustos 2025

Kabul Tarihi

11 Mayıs 2026

Yayımlandığı Sayı

Yıl 2026 Sayı: Advanced Online Publication

DOI

https://doi.org/10.18016/ksutarimdoga.vi.1767827

IZ

https://izlik.org/JA65TR27TY

Kaynak Göster

RIS / Bibtex

APA

Gündüz, Z., Yılmaz, O., Ata, N., Gül, S., Keskin, M., Cemal, İ., & Karaca, O. (2026). Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi, Advanced Online Publication, 242-256. https://doi.org/10.18016/ksutarimdoga.vi.1767827

AMA

1.Gündüz Z, Yılmaz O, Ata N, vd. Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi. 2026;(Advanced Online Publication):242-256. doi:10.18016/ksutarimdoga.vi.1767827

Chicago

Gündüz, Zühal, Onur Yılmaz, Nezih Ata, vd. 2026. “Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi, sy Advanced Online Publication: 242-56. https://doi.org/10.18016/ksutarimdoga.vi.1767827.

EndNote

Gündüz Z, Yılmaz O, Ata N, Gül S, Keskin M, Cemal İ, Karaca O (01 Eylül 2026) Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi Advanced Online Publication 242–256.

IEEE

[1]Z. Gündüz vd., “Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep”, Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi, sy Advanced Online Publication, ss. 242–256, Eyl. 2026, doi: 10.18016/ksutarimdoga.vi.1767827.

ISNAD

Gündüz, Zühal - Yılmaz, Onur - Ata, Nezih - Gül, Sabri - Keskin, Mahmut - Cemal, İbrahim - Karaca, Orhan. “Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi. Advanced Online Publication (01 Eylül 2026): 242-256. https://doi.org/10.18016/ksutarimdoga.vi.1767827.

JAMA

1.Gündüz Z, Yılmaz O, Ata N, Gül S, Keskin M, Cemal İ, Karaca O. Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi. 2026;:242–256.

MLA

Gündüz, Zühal, vd. “Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi, sy Advanced Online Publication, Eylül 2026, ss. 242-56, doi:10.18016/ksutarimdoga.vi.1767827.

Vancouver

1.Zühal Gündüz, Onur Yılmaz, Nezih Ata, Sabri Gül, Mahmut Keskin, İbrahim Cemal, Orhan Karaca. Microsatellite-Based Insights into Bottleneck Dynamics in Awassi Sheep. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi. 01 Eylül 2026;(Advanced Online Publication):242-56. doi:10.18016/ksutarimdoga.vi.1767827

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