A SURVEY ON SCALE OF Capoeta umbla (Heckel, 1843) BY GEOMETRIC MORPHOMETRIC METHODS DEPEND ON GENDER, AGE AND SEASON VARIATIONS

Bu çalışmada Dicle Nehri’nden toplam 82 (67♀♀, 15♂♂) Capoeta umbla türüne ait balıklardan yanal çizginin ve dorsal yüzgecin arasındaki alandan alınan ve yaş tespiti yapılan pullardan bir tanesi Canon SX7 model binokülerde 40X büyütmede binokülere takılı Olympus dijital kamera ile fotoğrafları çekilmiş ve tpsDig ver. 2.26 programı kullanılarak 6 landmark alınmıştır. MorphoJ ver. 1.06d ve PAST 3.11 programları kullanılarak ANOVA (Varyans Analizi), PCA (Temel Öğeler Analizi), CVA (Kanonik Varyans Analizi) ve DFA (Ayrışım Fnonksiyonu ) analizleri yapılmıştır. Analizler sonucunda boyut (CS: Centroid Size) ANOVA bakımından cinsiyet ve yaş grupları arasında fark yeterli (p<0.05) bulunmuş ancak şekil ANOVA bakımından gruplar arasında fark (p>0.05) bulunmamıştır. CVA ve DFA sonucu II-IV, II-V yaş grupları ve sonbahar-kış ve sonbahar-ilkbahar grupları arasında Mahalanobis mesafesi yeterli düzeyde (p<0.05) farklı bulunmuştur

The length-weight relationship and condition factor of two fish species Planiliza abu and Silurus triostegus from the Tigris River before the construction of the Ilisu and Cizre dams on the river

The research was carried out to determine the length-weight relationships (LWR), and condition factor of two fish species Planiliza abu and Silurus triostegus from the Tigris River where Ilisu and Cizre dams reservoir will occur. LWRs were obtained for three body lengths total, fork and standard for P. abu and total and standard for S. triostegus, by formula of W = aLb. The "b" values ranged from 2.8315 to 3.1293 for P. abu and 2.9066 to 3.0363 for S. triostegus. The relationships were found to be highly significant with all "r2" values being > 0.8572. The Fulton's condition factors (K) and relative condition factor (Kn) were calculated as 1.1534 and 1.0043 for P. abu and as 1.0357 and 1.0294 for S. triostegus respectively

Observation on the age, growth and somatic condition of Carasobarbus luteus (Heckel, 1843) and Capoeta trutta (Heckel, 1843) (Cyprinidae) in the Tigris River, Turkey

This study was carried out to determine some biological characteristics including age, growth and somatic condition of Carasobarbus luteus and Capoeta trutta in the Turkish part of the Tigris River. The examined samples of C. luteus were distributed between II-IX years of age. The length-weigth relations of females and males were calculated as Log W =-4.7314 +3.0113 Log FL and Log W = -4.7631 +3.0263 Log FL respectively. Von Bertalanffy growth equations were estimated as Lt=40.09 [1-e -0.087036 (t+1.55004)] for females and Lt=38.14 [1-e -0.080056 (t+2.34838)] for males. The somatic condition was 1.9667 ± 0.1751 for females and 1.9967 ± 0.4205 for males. The observed samples of C. trutta were distributed between I-VI years of age. The lengthweigth relationship of females and males were calculated as Log W = -4.6845 + 2.9303 Log FL, Log W = -4.7784 + 2.9746 Log FL, respectively. Von Bertalanffy growth equations were estimated as Lt=35.36 [1-e -0.082817 (t+4.82738)] for females and Lt=28.82 [1- e -0.12380 (t+4.40235)] for males. The somatic condition in female and male individuals were determined as; 1.4434 ± 0.1682 and 1.4722 ± 0.1984 respectively. Both species are economic fish in the Tigris River. Biological characteristics of the species determined in the present study, may contribute to a better understanding of the life cycle, thus providing useful data for its conservation and management

MORPHOLOGICAL AND MERISTIC DIFFERENCES AMONG FRESHWATER FISH, CYPRINION KAIS (CYPRINIDAE) POPULATIONS IN TIGRIS RIVER OF SOUTHEAST TURKEY

In this study, morphometric and meristic characteristics of Cyprinion kais samples which is obtained from different locality in Tigris River were carried out. In order to determine the morphological and meristic variation among populations, discriminant function can be detected, intergroup discrimination with the help of this function are the most distinctive variables affecting the availability of discriminant analysis , has benefited from the descriptive features. Success rate of classifying the groups according to the result of discriminant analysis of morphometric characteristics of C. kais individuals belonging to 3 different locality of Tigris River is manifested as 96.1%. According to the results of classifications, morphometric characteristics of the individuals of Kulp and Kayser Stream and Tigris River are different. Success rate of classifying the groups according to the discriminant analysis of meristic characteristics of C. kais individuals appeared as 70.6%. Kulp and Kayser Stream from the locality groups showed similarity. It is determined that there is high variation between the locality groups belonging the samples of C. kais according to the morphometric and meristic characteristics. KEYWORDS: In this study, morphometric and meristic characteristics of Cyprinion kais samples which is obtained from different locality in Tigris River were carried out. In order to determine the morphological and meristic variation among populations, discriminant function can be detected, intergroup discrimination with the help of this function are the most distinctive variables affecting the availability of discriminant analysis , has benefited from the descriptive features. Success rate of classifying the groups according to the result of discriminant analysis of morphometric characteristics of C. kais individuals belonging to 3 different locality of Tigris River is manifested as 96.1%. According to the results of classifications, morphometric characteristics of the individuals of Kulp and Kayser Stream and Tigris River are different. Success rate of classifying the groups according to the discriminant analysis of meristic characteristics of C. kais individuals appeared as 70.6%. Kulp and Kayser Stream from the locality groups showed similarity. It is determined that there is high variation between the locality groups belonging the samples of C. kais according to the morphometric and meristic characteristics

The reproductive biology of Carasobarbus luteus and Capoeta trutta in the Tigris River, Turkey

This study was carried out to determine the reproductive characteristics of two species of Cyprinidae, Longspine scraper, Capoeta trutta (Heckel, 1843) and Mesopotamian himri, Carasobarbus luteus (Heckel, 1843) in the Tigris River of Turkish part. A total of 307 C. luteus (138 females and 169 males) and 394 C. trutta (269 females and 125 males) specimens were analyzed. The sex ratio for C. luteus and C. trutta was 1:1.22 females (44.95%) to males (55.05%) and 1:0.47 females (68.27%) to males (31.73%), respectively. The reproduction period was between May and July for both species. The water temperature at this period was between 21.4 degrees C and 31 degrees C. Results indicated that the age at first maturity in C. luteus was three years for both males and females, and in C. trutta, three years for females and two years for males. The mean estimated fecundity was 5843 +/- 3554 for C. luteus and 5285 +/- 3105 for C. trutta. Maximal egg diameter for C. luteus and C. trutta were 1.61 +/- 0.45 mm and 0.91 +/- 0.41 mm, respectively

Size and shape analysis of two close Cyprinidae species (Garra variabilis-Garra rufa) by geometric morphometric methods

In this study, the differences between C. macrostomus and C. kais species that are similar to each other were investigated in terms of their size (CS) and shape by landmark-based geometric morphometric methods. There was no difference in size between the two species. However, the difference was significant between them in shape. The head of C. macrostomus is longer in height while its dorsal fin is located a bit forward and caudal peduncle is wider compared to C. kais. On the other hand, the body depth of C. kais is greater and its lateral line end is shorter. Considering the geometric morphometric differences, these two species can be identified and distinguished easily