TY  - JOUR
T1  - Image-based quantification of size, color, and image texture in meagre (Argyrosomus regius (Asso, 1801)) reared in different culture systems
TT  - Farklı kültür koşullarında yetiştirilen granyöz’ün (Argyrosomus regius (Asso, 1801)) boyutu, deri rengi ve görsel dokusunun görüntü tabanlı nicel analizi
AU  - Gümüş, Bahar
AU  - Ünlü, Canan
AU  - Gümüş, Erkan
AU  - Balaban, Murat Ömer
PY  - 2026
DA  - March
Y2  - 2026
DO  - 10.12714/egejfas.43.1.09
JF  - Ege Journal of Fisheries and Aquatic Sciences
JO  - EgeJFAS
PB  - Ege Üniversitesi
WT  - DergiPark
SN  - 2148-3140
SP  - 76
EP  - 85
VL  - 43
IS  - 1
LA  - en
AB  - Meagre is an important fish both regarding fisheries and aquaculture. Visual attributes of whole meagre are important for the purchase intention of consumers. Whole meagre grown in cages and earthen ponds were evaluated by image analysis for visual attributes (length, view area, color of right and left sides, image texture). The fish were weighed, and images of both sides were taken. Weight W vs length L data were fitted a power equation W = A LB. The B values for cage and earthen pond fish were 2.95 and 2.93, respectively. The R2 values for power fit to weight vs view area were 0.976 for cage fish, and 0.983 for earthen pond fish, respectively. The 1st null hypothesis was that the colors of cage and earthen pond-reared fish were not different. The 2nd null hypothesis was that for both type fish the colors of the right and left colors were not different. Specifically, the cage fish were lighter than the earthen pond-reared fish. The L*, a* and b* values of cage fish were statistically different than those of earthen pond fish (p<0.05). The a* values of both sides of cage and earthen pond fish, and b* values of both sides of cage fish were statistically different (p<0.05). Delta E values between the right and left skin colors for cage and earthen pond fish were 1.89, and 1.78, respectively, suggesting noticeable difference upon close examination. Also, there were 13 out of 53 Delta E values greater than 3 for cage fish, and 10 out of 66 for earthen pond fish. Texture change index and color change index of cage and earthen pond fish were statistically different (p<0.05). This suggests considering both sides of the fish should be considered in evaluating color and image texture.
KW  - Meagre
KW  - morphometric data
KW  - color
KW  - image texture
KW  - image analysis
N2  - Granyöz hem balıkçılık hem de su ürünleri yetiştiriciliği açısından önemli bir balıktır. Granyöz balığının görsel özellikleri, tüketicilerin satın alma niyeti için önemlidir. Kafeslerde ve toprak havuzlarda yetiştirilen bütün granyöz balıkları, görsel özellikler (uzunluk, görüş alanı, sağ ve sol tarafların rengi, görüntü dokusu) açısından görüntü analizi ile değerlendirilmiştir. Balıklar tartıldıktan sonra her iki tarafının görüntüleri alınmıştır. Ağırlık (W) ve uzunluk (L) verileri, W = A LB güç denkleminden yararlanılarak değerlendirilmiştir. Kafes ve toprak havuz balıkları için B değerleri sırasıyla 2,95 ve 2,93’tür. Ağırlık ve görüş alanı arasındaki güç uyumunun R2 değerleri kafes balıkları için 0,976, toprak havuz balıkları için ise 0,983’tür. Çalışmada ortaya konan iki hipotezden birincisi, kafes ve toprak havuzda yetiştirilen balıkların renklerinin farklı olmadığıdır. İkinci ise, her iki balık türü için de sağ ve sol tarafların renklerinin farklı olmadığıdır. Özellikle, kafes balıkları toprak havuzlarda yetiştirilen balıklardan daha hafiftir. Kafes balıklarının L*, a* ve b* değerleri toprak havuz balıklarının değerlerinden istatistiksel olarak farklıdır (p<0.05). Kafes ve toprak havuz balıklarının her iki tarafının a* değerleri ve kafes balıklarının her iki tarafının b* değerleri istatistiksel olarak farklı bulunmuştur (p<0.05). Kafes ve toprak havuz balıkları için sağ ve sol deri renkleri arasındaki Delta E değerleri sırasıyla 1,89 ve 1,78 olup yakından incelendiğinde gözle görülür bir fark olduğunu göstermektedir. Ayrıca, kafes balıkları için 53 Delta E değerinden 13'ü, toprak havuz balıkları için ise 66 Delta E değerinden 10'u 3'ten büyüktür. Kafes ve toprak havuz balıklarının doku değişim indeksi ve renk değişim indeksi istatistiksel olarak farklıdır (p<0.05). Bu, renk ve görüntü dokusunu değerlendirirken balığın her iki tarafının da dikkate alınması gerektiğini göstermektedir.
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UR  - https://doi.org/10.12714/egejfas.43.1.09
L1  - https://dergipark.org.tr/tr/download/article-file/5382455
ER  -