Histomorphological Study on Digestive Tract of Van Fish (Alburnus tarichi (Güldenstädt, 1814)

Öz

Van fish is an anadromic fish in the family Cyprinidae, endemic to the Lake Van basin. Fish feeding and care enters the streams flowing into the lake from Lake Van in April-July. In these aquatic environments, differences are observed in the feeding behavior of the fish. In this study, the digestive tract of 30 Van fish sampled from Lake Van and Karasu Stream between April and July were examined morphometrically and histologically. When the digestive tract of the Van fish was examined, it was observed that there was no obvious stomach structure. It was determined that the digestive tract consists of the esophagus, stomach-like structure that serves as the stomach, anterior intestine, posterior intestine and anus. When the digestive tract of Van fish is examined, it consists of the outermost serous layer, the muscularis layer, the submucosa layer and the innermost mucosa layer consisting of folds towards the lumen. It was determined that these layer thicknesses varied between fish sampled from lakes and streams. Diameter, mucosal width, mucosal length, mucosal folds, muscularis thickness, submucosa thickness and length were measured morphometrically. It was determined that these values were higher in the fish sampled from the lake compared to the fish sampled from the rivers. Measurements in the digestive tract of van fish were determined for the first time in this study. These measured values are thought to be related to the nutrition, stress and physicochemical structure of the water.

Anahtar Kelimeler

• Histology
• Morphology
• Reproductive Migration
• Lake Van

Proje Numarası

FDK-2020-8918

Van Balığı (Alburnus tarichi (Güldenstädt, 1814))’nın Sindirim Kanalı Üzerinde Histomorfolojik Çalışma

Öz

Van balığı, Van Gölü havzasına endemik Cyprinidae familyasında yer alan anadrom bir balıktır. Balık beslenme ve büyümesini gerçekleştirdiği Van Gölü’nden nisan-temmuz aylarında göle dökülen akarsulara giriş yapar. Bu sucul ortamlarda balığın beslenme davranışlarında farklılık gözlenir. Bu çalışmada nisan ve temmuz ayları arasında Van Gölünden ve Karasu Çayından örneklenen 30 adet Van balığı sindirim kanalı morfometrik ve histolojik olarak incelendi. Van balığı sindirim kanalı incelendiğinde belirgin bir mide yapısının olmadığı gözlendi. Sindirim kanalı özofagus, mide görevini üstlenen mide benzeri yapı, anterior bağırsak, posterior bağırsak ve anüsten meydana geldiği belirlendi. Van balığının sindirim kanalının en dıştan içe doğru seröz, muskularis, submukoza ve lümene doğru kıvrımlardan oluşan mukoza tabakalarından oluştuğu gözlendi. Bu tabaka kalınlıklarının göl ve akarsudan örneklenen balıklar arasında değiştiği belirlendi. Morfometrik olarak çap, mukoza genişliği, mukoza uzunluğu, mukoza kıvrımları, muskularis kalınlığı, submukoza kalınlığı ve uzunluğu ölçüldü. Bu değerlerin, gölden örneklenen balıklarda akarsulardan örneklenen balıklara göre daha büyük olduğu belirlendi. Van balığı sindirim kanalında ölçümler ilk defa bu çalışma ile belirlendi. Bu ölçülen değerlerin balığın beslenme, stres ve suyun fizikokimyasal yapısı ile ilgili olduğu düşünülmektedir.

Anahtar Kelimeler

• Histoloji
• Morfoloji
• Üreme Göçü
• Van Gölü

Destekleyen Kurum

Van Yüzüncü Yıl Üniversitesi

Proje Numarası

FDK-2020-8918

Teşekkür

Balık temininde yardımını esirgemeyen Doktor Ahmet SEPİL’e teşekkür ederim. Bu araştırma Van yüzüncü Yıl Üniversitesi, Bilimsel Araştırma Projeleri Daire Başkanlığı (FDK-2020-8918) tarafından desteklenmiştir.

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