Araştırma Makalesi

İzmir ve Kuşadası Körfezi’nde dağılım gösteren Sardalya balığında (Sardina pilchardus Walbaum, 1792) bazı biyolojik indekslerin mevsimsel değişimlerinin izlenmesi

Cilt: 5 Sayı: 1 25 Ekim 2023
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Monitoring of seasonal changes of some biological indexes of Sardine (Sardina pilchardus Walbaum, 1792), distribuited in İzmir and Kuşadası Bay

Abstract

This study was carried out seasonally in 2022 in order to determine and compare the seasonal changes in some biological indexes (Hepatosomatic index, Fullness index, Gonadosomatic index, Visseral index and Fulton-K condition) of Sardine Sardina pilchardus, (Walbaum, 1792) fish, which are distributed in the two main fishing bays of the Aegean Sea (İzmir and Kuşadası Bay). For this purpose, a total of 302 fish samples from both bays were obtained directly from commercial fishermen. While the Hepatosomatic index (HSI) value determined the highest value in the winter season and the lowest value in the summer season in İzmir Bay, the highest value in Kuşadası Bay was in autumn and lowest in spring. It is predicted that seasonal changes in HSI values depend on the effect on the metabolic activities and swimming activities of fish according to the changing seasonal water temperature. This situation is predicted to be possible with the stomach fullness index (FI). Gonadosomatic index values (GSI) were calculated in the lowest summer and the highest winter in both gulfs. This seasonal variation in GSI values is consistent with the distinctive reproductive cycle of the sardine population for the Aegean Sea. Although the Vissceral index values (VSI) of the sardine population in İzmir Bay are higher than the population in Kuşadası Bay, it suggests that the species feeds on higher energy zooplanktonic prey groups in İzmir Bay. Likewise, Fulton-K condition values are higher in İzmir Bay. The difference between the current condition values between the bays is associated with the fact that the northeast central areas of the Aegean Sea have upwelling areas and provide important nutrient input. This study showed that the index values of sardine populations in two different gulfs in the Aegean Sea are affected by seasonal planktonic community and environmental changes.

Keywords

Destekleyen Kurum

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Proje Numarası

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Teşekkür

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Kaynakça

  1. Akyol, O., Tokaç. A., & Ünsal., S. (1996). İzmir Körfezi’nde (Ege Denizi) Dağılım Gösteren Sardalya Balığı (Sardina pilchardus Walbaum, 1792)’nın Büyüme ve Üremesi Üzerine Bir Araştırma. E.Ü. Su Ürünleri Dergisi, 13(3-4), 383-394.
  2. Bagenal, T.B., & Tesch, F.W. (Bagenal T., ed.) (1978). Age and growth. In: Methods for Assessment of Fish Production in Fresh Waters. IBP Handbook No. 3: Blackwell Scientific Publications, 101-136 p.
  3. Bicudo, A. J. A., Sado, A. Y., & Cyrino, J. E. P. (2010). Growth performance and body composition of pacu (Piaractus mesopotamicus). Aquaculture Nutrition, 16(2), 213-222. https://doi.org/10.1111/j.1365-2095.2009.00653.x
  4. Cihangir, B. (1991). Ege Denizi’nde Sardalya (Sardina pilchardus Walbaum, 1792)’ nın Üreme Biyolojisi ve Büyümesi. Dokuz Eylül Üniversitesi, Doktora Tezi, 86s.
  5. Costalago, D., & Palomera, I. (2014). Feeding of European pilchard (Sardina pilchardus) in the northwestern Mediterranean:from late larvae to adults. Scientia Marina, 78(1):1-14. https://doi.org/10.398/scimar.03898.06D
  6. Dalkılınç, B. (2021). Didim-Taşburun’daki Sardalya (Sardina pilchardus (Walbaum,1792)’nın Besin Kompozisyonu (Güney Ege Denizi). Ege Üniversitesi Fen ilimleri Enstitüsü, Yüksek Lisans Tezi, 29s.
  7. Erdogan, Z., Torcu-Koç, H., Gicili, S., & Ulunehir, G. (2010). Age, growth and mortality of European pilchard, Sardina pilchardus in Edremit Bay (northern Aegean Sea, Turkey. Cybium, 34(2), 185-193. https://hdl.handle.net/20.500.12462/6980.
  8. Froese, R. (2006). Cube law, condition factor and weightlength relationships: history, meta-analysis and recommendations. Journal of Applied Ichthyology, 22, 241–253. https://doi.org/10.11/j.1439-0426.2006.00805.x

Ayrıntılar

Birincil Dil

Türkçe

Konular

Balıkçılık Yönetimi

Bölüm

Araştırma Makalesi

Erken Görünüm Tarihi

13 Ekim 2023

Yayımlanma Tarihi

25 Ekim 2023

Gönderilme Tarihi

24 Ocak 2023

Kabul Tarihi

14 Şubat 2023

Yayımlandığı Sayı

Yıl 1970 Cilt: 5 Sayı: 1

Kaynak Göster

APA
Keskin, B. A., & Gürkan, Ş. (2023). İzmir ve Kuşadası Körfezi’nde dağılım gösteren Sardalya balığında (Sardina pilchardus Walbaum, 1792) bazı biyolojik indekslerin mevsimsel değişimlerinin izlenmesi. Marine and Life Sciences, 5(1), 1-7. https://doi.org/10.51756/marlife.1241686
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