Larval Morphological Development and Seasonal Variation of the Mediterranean Sand Eel, Gymnammodytes cicerelus (Rafinesque, 1810) in the Shallow Waters of Gökçeada Island, North Aegean Sea

Yıl 2020, Cilt: 3 Sayı: 2, 95 - 101, 21.12.2020

İsmail Burak Daban , Ali İşmen

https://doi.org/10.46384/jmsf.794629

Öz

Mediterranean sand eel, Gymnammodytes cicerelus (Rafinesque, 1810) is a demersal subtropical fish species belonging to the family Ammodytidae. In this study, the morphological development and temporal variations of Mediterranean sand eel larvae were studied. Ichthyoplankton samples were collected between September 2015 and April 2016 in the shallow waters of the Gökçeada Island, northern Aegean Sea. Samples were collected with horizontal tows, using a WP-2 plankton net (57 cm frame diameter equipped with a 500 µm mesh, 3 m total length). Early life stages were photographed and morphological features of individuals between 2.73–7.91 mm in standard length were described comprehensively. It was determined that spawning occurred between November and February and peaked in December. Larval abundance ranged between 6.36 and 69.96 individuals/1000 m3. In this study, the abundance and distribution of the species in the Mediterranean was revealed for the first time.

Anahtar Kelimeler

Identification, Spawning Season, Melanophore, Abundance

Destekleyen Kurum

yok

Proje Numarası

yok

Teşekkür

The data of this study is obtained from PhD study of İsmail Burak Daban. The authors would like to thank Assist. Prof. Dr. Ahsen Yüksek for valuable contributions in identifying fish larvae. Thanks are extended to Kamil Çakır and Captain Yılmaz Tokoğlu who helped with the field samplings.

Gökçeada Kıyı Sularında Bulunan Kum Yılan Balığı, Gymnammodytes cicerelus (Rafinesque, 1810)’nın Larval Morfolojik Gelişimi ve Mevsimsel Değişimi

Öz

Kum yılan balığı, Gymnammodytes cicerelus (Rafinesque, 1810), Ammodytidae familyasına ait olan demersal ve subtropical bir türdür. Bu çalışmada kum yılan balığı larvalarının morfolojik gelişimi ve zamansal değişimi çalışılmıştır. İhtiyoplankton örnekleri Gökçeada kıyı sularından Eylül 2015 ile Nisan 2016 tarihleri arasında toplanmıştır. Örneklemeler horizontal çekimler ile WP-2 tip plankton kepçesi (500 µm netle donatılmış 57 cm çember çapına ve 3 m toplam net uzunluğuna sahip) ile gerçekleştirilmiştir. Erken yaşam evreleri fotoğraflanmış ve 2.73–7.91 mm standart boy aralığındaki bireylerin morfolojik değişimler kapsamlı olarak tanımlanmıştır. Üreme sezonunun Kasım ile Şubat arasında olduğu, üremenin Aralık ayında pik yaptığı tespit edilmiştir. Larval bolluk değeri birim alanda 6.36 ile 69.96 n/1000 m3 arasında değişmiştir. Bu çalışmada ilk kez türün Akdeniz’deki larval bolluk ve dağılımı ortaya konmuştur.

Anahtar Kelimeler

Tayin, Üreme Sezonu, Melanafor, Bolluk

Proje Numarası

yok

Kaynakça

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