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Journals / Journal of FisheriesSciences.com / 2011 / Cilt: 5 - Sayı: 2

İzmir Körfezi’nde (Ege Denizi) Mürekkepbalığının, Sepia officinalis, üremesi üzerine ön sonuçlar

Preliminary results on the cuttlefish, Sepia officinalis, reproduction in Izmir bay (Aegean Sea)

Okan AKYOL
Tevfik CEYHAN
Burcu TELLİBAYRAKTAR
Pages
122–130
Publication Date
2022-10-18
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The monthly gonadosomatic index (GSI) results indicated that the reproductive period of S. officinalis ranged from March to October, with a maximal GSI of 5.64 in May for females and from December to February and April, with a maximal GSI of 2.32 in April for males.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Some reproductive properties of Sepia officinalis from the Bay of Izmir, Aegean Sea are re-ported in this study.
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Key Findings & Data:A total of 333 specimens, of which 81 females, 248 males and 4 immature animals were collected during monthly samplings from November 2006 to November 2007.
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Conclusion & Impact:The monthly gonadosomatic index (GSI) results indicated that the reproductive period of S. officinalis ranged from March to October, with a maximal GSI of 5.64 in May for females and from December to February and April, with a maximal GSI of 2.32 in April for males.
🔬Design:Research Article
📍Scope:2006 · 333 specimens
⚙️Variables:Domain Parameters

Abstract

Some reproductive properties of Sepia officinalis from the Bay of Izmir, Aegean Sea are re-ported in this study. A total of 333 specimens, of which 81 females, 248 males and 4 immature animals were collected during monthly samplings from November 2006 to November 2007. The mantle length of all sampled specimens varied between 5.5 and 22.4 cm with an average of 11.59 ±0.16 cm. The annual sex ratio (females:males) was 1:3.1. The monthly gonadosomatic index (GSI) results indicated that the reproductive period of S. officinalis ranged from March to October, with a maximal GSI of 5.64 in May for females and from December to February and April, with a maximal GSI of 2.32 in April for males. Total number of oocytes varied from 49 to 828 with an average of 261 ±27 per specimen. The mean diameter of the oocytes extracted from 49 females was 5.21 ±0.03 mm and ranged from 1.91 mm to 9.44 mm. There were weak correlations between the fecundity of the females and both mantle length (R2=0.31) and body weight (R2=0.31).

Özet

Bu çalışmada, İzmir Körfezi (Ege Denizi)’nden Sepia officinalis’in bazı üreme özellikleri rapor edilmiştir. 81’i dişi, 248’i erkek ve 4’ü olgun olmayan toplam 333 birey Kasım 2006’dan Kasım 2007’ye aylık örneklemelerle toplanmıştır. Tüm örneklenmiş bireylerin manto boyları 5.5 ile 22.4 cm (ortalama: 11.59 ±0.16 cm) arasında değişmiştir. Yıllık cinsiyet oranı (dişi:erkek) 1:3.1’dir. Aylık gonadosomatik indeks (GSI) sonuçları S. officinalis’in üreme dö-nemini Mart’tan Ekim’e (dişiler için maksimum GSI değeri 5.64 ile Mayıs) ve Aralık’tan Şubat ve Nisan’a (erkekler için maksimum GSI değeri 2,32 ile Nisan) uzadığını göstermiştir. Toplam yumurta sayısı 49’dan 828’e (ortalama: 261 ±27 /birey) değişmiştir. 49 dişiden alınmış yu-murtaların ortalama çapları 5.21 ±0.03 mm olarak bulunmuştur ve 1.91 mm ile 9.44 mm arasında değişmiştir. Fekondite ile manto boyu (R2=0.31) ve vücut ağırlığı (R2=0.31) arasında zayıf bir ilişki vardır.

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Cite This Article

AKYOL, O., CEYHAN, T., TELLİBAYRAKTAR, B. (2022). İzmir Körfezi’nde (Ege Denizi) Mürekkepbalığının, Sepia officinalis, üremesi üzerine ön sonuçlar. Journal of FisheriesSciences.com, Cilt: 5 - Sayı: 2, 122–130. https://ajindex.com/articles/563242

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