An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea
Yıl: 2023 Cilt: 8 Sayı: 3 Sayfa Aralığı: 492 - 499 Metin Dili: İngilizce DOI: 10.35229/jaes.1348554 İndeks Tarihi: 26-10-2023
An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea
Öz: Fish length–weight relationships are essential for estimating biomass and assessing fish population health, typically showing low variation within and between neighbouring stocks. This study investigates the length–weight relationships of Mediterranean horse mackerel (Trachurus mediterraneus) collected from the Sea of Marmara, the Middle Black Sea, and the Eastern Black Sea during 2022. In addition, the study assessed the sex ratio and Fulton’s condition factor (kc) of Mediterranean horse mackerel at each station, alongside an examination of length frequency samples, providing a comprehensive analysis. The one-way ANCOVA analysis showed no significant differences in length–weight regression between the sexes. However, it identified a considerable area effect, with samples from the Sea of Marmara significantly differing from those in the Middle Black Sea and Eastern Black Sea. The fish samples from the latter areas displayed moderate length–weight variation, which was close to the significance threshold with a P-value of 0.069. The growth pattern of Mediterranean horse mackerel consistently exhibited negative allometry across all sampled areas for both males and females, except for female Mediterranean horse mackerel from the Middle Black Sea, which tended to follow an isometric growth pattern. This study revealed consistent results within neighbouring areas (Middle Black Sea and Eastern Black Sea) and significant variations when comparing the Black Sea and Sea of Marmara Mediterranean horse mackerel, highlighting notable large-scale spatial trends.
Anahtar Kelime: Marmara Denizi, Orta Karadeniz ve Doğu Karadeniz'den Ticari Av Kompozisyonundan Örneklenen İstavrit balığı (Trachurus mediterraneus)'nın Cinsiyet Oranı, Kondisyon Faktörü ve Boy–Ağırlık İlişkisinin Ampirik Karşılaştırması
Öz: Balıklarda boy–ağırlık ilişkileri balık popülasyonlarının değerlendirilmesi ve biyokütle tahmininde kullanılan bir parametre olup, genellikle yakın bölgelerde yaşayan balık stokları arasında düşük varyasyon gösterir. Bu çalışma, 2022 yılında Türkiye'den Marmara Denizi, Orta Karadeniz ve Doğu Karadeniz'den avlanan istavrit (Trachurus mediterraneus) örneklerinin boy-ağırlık ilişkilerini incelenmiştir. Ayrıca, bu çalışma, her istasyondaki istavrit balığının cinsiyet oranını ve kondisyon faktörünü değerlendirerek boy-frekans analizleri yapılmıştır. Tek yönlü ANCOVA analizi, cinsiyetler arasında boy-ağırlık regresyonunda anlamlı farklılıklar olmadığını göstermiştir. Ancak, bu çalışmada Marmara Denizi'nden alınan örneklerin Orta Karadeniz ve Doğu Karadeniz'den alınan örneklere göre farklı olduğu tespit edilmiştir. İkincil bölgelerden alınan balık örnekleri, anlamlılık eşiğine yakın olan 0,069 ile orta düzeyde boy–ağırlık varyasyonu sergilemiştir. İstavrit balığının büyüme deseni, erkekler ve dişiler için tüm örnek bölgelerinde tutarlı bir şekilde negatif alometrik olduğu tespit edilmiştir. Ancak Orta Karadeniz'den avlanan dişi örnekler izometrik bir büyüme tipinde olduğu belirlenmiştir. Bu çalışma, komşu bölgelerde (Orta Karadeniz ve Doğu Karadeniz) tutarlı sonuçlar ortaya koyarken, Karadeniz ve Marmara Denizi istavritleri karşılaştırıldığında önemli farklılıklar olduğunu göstermiş ve kayda değer büyük ölçekli mekânsal eğilimleri vurgulamıştır.
Anahtar Kelime: Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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| APA | Dürrani Ö (2023). An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. , 492 - 499. 10.35229/jaes.1348554 |
| Chicago | Dürrani Ömerhan An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. (2023): 492 - 499. 10.35229/jaes.1348554 |
| MLA | Dürrani Ömerhan An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. , 2023, ss.492 - 499. 10.35229/jaes.1348554 |
| AMA | Dürrani Ö An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. . 2023; 492 - 499. 10.35229/jaes.1348554 |
| Vancouver | Dürrani Ö An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. . 2023; 492 - 499. 10.35229/jaes.1348554 |
| IEEE | Dürrani Ö "An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea." , ss.492 - 499, 2023. 10.35229/jaes.1348554 |
| ISNAD | Dürrani, Ömerhan. "An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea". (2023), 492-499. https://doi.org/10.35229/jaes.1348554 |
| APA | Dürrani Ö (2023). An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES, 8(3), 492 - 499. 10.35229/jaes.1348554 |
| Chicago | Dürrani Ömerhan An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES 8, no.3 (2023): 492 - 499. 10.35229/jaes.1348554 |
| MLA | Dürrani Ömerhan An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES, vol.8, no.3, 2023, ss.492 - 499. 10.35229/jaes.1348554 |
| AMA | Dürrani Ö An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES. 2023; 8(3): 492 - 499. 10.35229/jaes.1348554 |
| Vancouver | Dürrani Ö An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea. JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES. 2023; 8(3): 492 - 499. 10.35229/jaes.1348554 |
| IEEE | Dürrani Ö "An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea." JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES, 8, ss.492 - 499, 2023. 10.35229/jaes.1348554 |
| ISNAD | Dürrani, Ömerhan. "An Empirical Comparison of Sex Ratio, Condition Factor, and Length–Weight Relationships in Commercial Catch of Mediterranean Horse Mackerel from the Sea of Marmara, the Middle and Eastern Black Sea". JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES 8/3 (2023), 492-499. https://doi.org/10.35229/jaes.1348554 |
