Discriminaciones intra e interespecies: especies de Scorpaena del mar Negro, el mar Egeo, el mar de Mármara y Mediterráneo

This study was conducted to discriminate five Scorpaena species and populations of each species according to morphometric characters. A total of 1865 fish specimens were collected from the eight locations in the four Turkish seas: Antalya, Balıkesir, Çanakkale, Hatay, İzmir, Marmara Ereğlisi, Ordu and Şile. In the study, 26 morphometric traits were measured for intra- and interspecific discrimination of five Scorpaena species. The data were subjected to analysis of variance, principal components analysis (PCA) and canonical discriminant analysis. As results of the PCA, 10 traits for S. maderensis and S. scrofa, 12 traits for S. elongata and 13 traits for S. notata and S. porcus were found to be important for intraspcific discrimination. The overall classification scores of intraspecific discrimination were determined as 94.6% for S. elongata, 90.5% for S. maderensis, 96.7% for S. notata, 96.5% for S. porcus and 92.2% for S. scrofa. The PCA indicated that 13 morphometric measurements among the 26 traits are important in the interspecific discrimination of five Scorpaena species. The cross-validated canonical discriminant analysis was correctly classified as 97.4% at the Scorpaena species level. The discrimination of correctly classified species ranged from 94.8% to 100%. Finally, we demonstrated that the morphometric characters examined in the present study can be used successfully in the intra- and interspecific discrimination of Scorpaena species from different habitats.Este estudio se realizó para discriminar cinco especies de Scorpaena y poblaciones de cada especie en función de los caracteres morfométricos. Se recolectaron un total de 1865 especímenes de peces de los ocho lugares como Antalya, Balıkesir, Çanakkale, Hatay, İzmir, Marmara Ereğlisi, Ordu y Şile en los cuatro mares turcos. En el estudio, se midieron 26 rasgos morfométricos para discriminaciones intra e interespecies de cinco especies de Scorpaena. Los datos se sometieron a ANOVA, análisis de componentes principales (PCA) y análisis discriminante canónico (CDA). Como resultado del PCA, 10 rasgos para S. maderensis y S. scrofa, 12 rasgos para S. elongata, 13 rasgos para S. notata y S. porcus son importantes para la discriminación intraespecífica. Las puntuaciones generales de clasificación de discriminación intraespecífica se determinaron como 94,6% para S. elongata, 90,5% para S. maderensis, 96,7% para S. notata, 96,5% para S. porcus y 92,2% para S. scrofa. La PCA indicó que 13 medidas morfométricas entre los 26 rasgos son importantes en la discriminación interespecífica de cinco especies de Scorpaena. El análisis discriminante canónico con validación cruzada clasificó correctamente como 97,4% a nivel de la especie Scorpaena. La discriminación de especies correctamente clasificadas osciló entre 94,8 y 100%. Finalmente, demostramos que los caracteres morfométricos examinados en el presente estudio se pueden utilizar con éxito en las discriminaciones intra e interespecies de especies de Scorpaena de diferentes hábitats

NEW DISTRIBUTION DATA FOR PRUSSIAN CARP Carassius gibelio (BLOCH 1782) IN THE MIDDLE BLACK SEA REGION OF TURKEY

U ovom radu prikazana je nova pojava babuške C. gibelio koja pripada rodu Carassius u jezerima Ulugöl Plateau (Mesudiye-Ordu, Turska) Perşembe Plateau (Aybastı-Ordu, Turska) u regiji srednjeg Crnog mora (Turska). Podaci o distribuciji babuške ažurirani su u usporedbi s ranije poznatim podacima u srednjem crnomorskom području Turske. Prikaz rezultata nekih morfoloških podataka uzoraka, prikupljenih s dva različita područja u regiji srednjeg Crnog mora, može doprinijeti utvrđivanju trenutnog statusa rasprostranjenosti ove invazivne vrste i određivanju potencijalnih područja rasprostranjenosti.In this study, the new occurrence of Carassius gibelio belonging to the genus Carassius in Ulugöl Plateau Pond (Mesudiye-Ordu, Turkey) and Perşembe Plateau Pond (Aybastı-Ordu, Turkey) in the Middle Black Sea Region (Turkey) is reported. The distribution data of Prussian carp was updated in the Middle Black Sea Region of Turkey in comparison to the previously known data. Presenting morphological data of samples collected from two different areas in the Middle Black Sea Region may contribute to revealing the current distribution status of this invasive species and determining the potential distribution areas

Orta Karadeniz’den Örneklenen Merlangius merlangus‘un Dört Otolit Karakterinin Dalgalı Asimetrisinin İncelenmesi

Fluctuating asymmetry was calculated for the otolith width, length, area and perimeter of Merlangius merlangus caught in the Middle Black Sea. In the present study, M. merlangus samples were divided nine-total length groups. All total length groups were examined for asymmetry values in the otolith characters, the highest asymmetry values were found in the Group III. The lowest asymmetry values in four otolith characters such as area, length, perimeter, and width were calculated in the Group I and Group IX. In this study, it was determined that the otolith asymmetry levels of M. merlangus in the Middle Black Sea were varied between the four otolith characters, the otolith area has the highest and the otolith length has the lowest asymmetric feature. In addition, there was no significant relationship between the asymmetry values of the four otolith characters and total length. The asymmetry in these otolith characters may be a result of the stress from different pollutants in the Black Sea.Orta Karadeniz'den yakalanan Merlangius merlangus’un otolit genişliği, uzunluğu, alanı ve çevresi için dalgalı asimetri değerleri hesaplanmıştır. Bu çalışmada elde edilen M. merlangus örnekleri dokuz total boy grubuna ayrılmıştır. Tüm total boy grupları, otolit karakterlerindeki asimetri değerleri açısından incelenmiş ve en yüksek asimetri değerleri Grup III'de bulunmuştur. Alan, uzunluk, çevre ve genişlik gibi dört otolit karakterindeki en düşük asimetri değerleri Grup I ve Grup IX'de hesaplanmıştır. Bu çalışmada, Orta Karadeniz'deki M. merlangus'un otolit asimetri düzeylerinin bu dört otolit karakteri arasında farklılık gösterdiği, otolit alanının en yüksek ve otolit boyunun ise en düşük asimetrik özelliğe sahip oluğu belirlenmiştir. Ayrıca bu dört otolit karakterinin asimetri değerleri ile total boy grupları arasında anlamlı bir ilişki yoktur. Bu türün otolit karakterlerinde gözlenen asimetri Karadeniz’deki farklı kirleticilerden kaynaklı stresin bir sonucu olabilir

Sagittal Otolith Morphology of Sharpsnout Seabream Diplodus puntazzo (Walbaum, 1792) in the Aegean Sea

WOS: 000379751100012The morphology, biometry and shape indices of the left and right sagittal otoliths were studied for sharpsnout seabream, Diplodus puntazzo species from Aegean Sea. The shape, sulcus acusticus shape, proximal and distal surfaces, anterior and posterior regions of left and right sagittal otoliths for a total of 52 D. puntazzo were analyzed. The morphometric measurements such as weight, length, width, area and perimeter were recorded for each pair of sagittal otoliths of the sharpsnout seabream. The shape indices such as form factor, roundness, aspect ratio, circularity, rectangularity, and ellipticity were calculated for left and right sagittal otoliths of D. puntazzo. The otolith width and ellipticity were significantly different (P < 0.05) for left and right sagittal otolith measurements and shape indices, respectively in D. puntazzo inhabiting the Aegean Sea. Morphological characteristics of fish otoliths were highly variable in species and populations; there was limited information on the sagittal otolith morphology and shape indices. The present study provided sufficient information of the sharpsnout seabream left and right otolith morphologies, biometry, and shape indices in the Aegean Sea, they may provide a useful tool for marine and freshwater species discrimination and identification in further investigations