Savaş Yilmaz

Length-weight and length-length relationships of Capoeta sieboldii from Hirfanlı Dam Lake, Turkey.

ABSTRACT This study describes the length-weight (LWR) and length-length relationships of Capoeta sieboldii from Hirfanli Dam Lake, Turkey. Condition factor (K) was also calculated per fork length class of females and males. A total of 170 individuals was collected from monthly sampling between March 2004 and August 2005. LWRs of females and males were not statistically different with and within season. LWRs indicated isometric growth in both sexes. The slopes of LWRs were 3.171 for females and 2.980 for males. All correlations among fork length, total length, and standard length were highly significant (P>0.001, r2<0.92). The values of K ranged from 1.21 to 1.43 for females and from 1.12 to 1.36 for males.

Age Determination and Annulus Formation of Crucian Carp (Carassius gibelio) Inhabiting Egirdir Lake and Bafra Fish Lake, Turkey

ABSTRACT Age determination and annulus formation of the crucian carp (Carassius gibelio) obtained from Egirdir Lake between March 2001 and January 2003 and Bafra Fish Lake between January 2000 and September 2002 were evaluated by examination of scales, otoliths, vertebrae, opercular bones, and subopercular bones. The precision of age estimation was derived by percentage of reader agreement and coefficient of variation (CV). The highest agreement (70.3%) and lowest CV (7.0%) were with otoliths for Egirdir Lake specimens; in Bafra Fish Lake specimens, the highest agreement and lowest CV were with vertebrae 62.9% and 8.1%, respectively. We found that the most reliable bony structure for age determination varied in different populations of this species. Marginal increment analysis showed that annulus formation occured during October-April.

Myxobolus anatolicus sp. nov. (Myxozoa) infecting the gill of Anatolian khramulya Capoeta tinca (Cyprinidae) in Turkey.

This work is part of an ongoing investigation into the characteristics of myxozoan parasites of freshwater fish in Turkey and was carried out using morphology, histopathology and molecular analysis. A new species of the genus Myxobolus (M. anatolicus sp. nov.) was found infecting the gills of 3 of 34 specimens (8.8%) of Anatolian khramulya Capoeta tinca from the Samsun Province, Northern Turkey. Both morphology and 18S rDNA sequence data revealed that M. anatolicus sp. nov. was distinct from other Myxobolus species found in the gills of cyprinid fishes. The small, white and round-shaped plasmodia, measuring 0.2 to 1.4 mm in diameter, were observed macroscopically in the gills. Histological analysis revealed that the cyst-like plasmodia have an intralamellar-vascular type development. Mature spores of M. anatolicus sp. nov. were oval in both frontal and sutural views, and tapered at the anterior poles. The spores were 10.1 ± 0.41 (9.4 to 10.7) µm long, 6.9 ± 0.28 (6.6 to 7.2) µm wide, and 4.5 ± 0.36 (4.4 to 4.6) µm thick. The 2 polar capsules were pyriform, equal in size, 4.6 ± 0.45 (4.4 to 4.8) µm long and 2.1 ± 0.12 (2 to 2.3) µm wide. Polar filaments within the polar capsules were coiled with 5 or 6 turns. Phylogenetic analysis placed M. anatolicus sp. nov. in a clade of gill-infecting myxobolids. This is the first record of a Myxobolus species infecting Anatolian khramulya Capoeta tinca, and the first record of this species from Eurasia.

Length-weight and length-length relationships of chub (Squalius cephalus, L., 1758) inhabiting a few inland waters of the Middle Black Sea Region

Bu calismada orta Karadeniz Bolgesi’ndeki bazi icsularda yasayan tatlisu kefalinin ( Squalius cephalus, L.1758) boy-agirlik ve boy-boy iliskileri incelenmistir. Toplamda 218 (Abdal (N=44), Akcay (N=57), Terme (N= 55), Yedikir (N=62)) ornek farkli lokalitelerden orneklenmistir. Yakalanan tum orneklerin total, catal ve standart boylari (0.1 cm) olculmustur. Her bir ornegin agirligi (W) kaydedilmistir (0.01 g). Analiz sonuclarina gore cinsiyetler arasinda boy ve agirlik bakimindan istatistiksel olarak onemli bir farklilik yoktur (P ˃ 0.05). Bu sebeple tum populasyon (disi+erkek) analizlerde birlikte degerlendirilmistir. Abdal Cayi, Akcay Cayi, Terme Cayi ve Yedikir Baraj Golu’nden orneklenen tatlisu kefalinin ortalama total boylari sirasiyla 11.49±0.792, 10.31±0.518, 10.33±0.289 ve 11.11±0.327 cm arasinda degismektedir. Boy-agirlik iliskileri tum lokaliteler icin onemli bulunmustur (P 0.990). Boy-agirlik iliskisinin “b” degeri istatistiksel anlamda 3’ten faklidir ve tum lokaliteler icin buyume tipi pozitif allometriktir. Boy-agirlik iliskilerinin denklemleri sirasi ile Abdal, Akcay, Terme ve Yedikir icin W=0.007TL 3.224 , W=0.006TL 3.285 , W=0.005TL 3.298 , W=0.007TL 3.210 olarak hesaplanmistir. Boy-boy iliskilerinin regresyon katsayilari 0.916 ile 0.999 arasinda degisim gostermektedir ve istatistiksel anlamda onemlidir (P<0.001).

Ladik Gölü (Samsun, Türkiye)’ndeki kızılkanat balığı (Scardinius erythrophthalmus L., 1758) populasyonunda en güvenilir yaş tayini yönteminin belirlenmesi

Ages estimated from scales, vertebrae, opercles, utricular (lapillus) and lagenar (asteriscus) otoliths of 260 rudd (Scardinius erythrophthalmus L., 1758) specimens captured from Lake Ladik in February and March 2010 were compared to determine the most reliable ageing method. Three readings were made for each bony structure by one reader. Mean ages were determined for all bony structures and precision of ages obtained from multiple readings was evaluated calculating percent agreement (PA), average percent error (APE) and coefficient of variation (CV). Due to the highest PA (71.71 %) and the lowest APE (2.71 %) and CV (3.56 %) values, it was concluded that lapillus is the most reliable bony structure for age determination in Lake Ladik population of this species. When lapillus ages were compared with other bony structures, the highest precision was found between lapillus and asteriscus age readings.

Ladik Gölü (Samsun, Türkiye)’nde Yaşayan Tatlısu Levreği (Perca fluviatilis L., 1758)’nin Operkül Boyutları ile Balığın Total Boyu Arasındaki İlişkiler

There are so many researches about the effects of exercise on pulmonary Junctions. In some studies it were found that pulmonary function improved with exercise and in the others did not. It was generally accepted that there were improvement in pulmonary functions with swimming and diving. In this article the effects of exercise on pulmonary functions are reviewed. [Journal of Turgut Ozal Medical Center 1 (3):230-233,1994] Key words: Exercise, training, pulmonary functions, vital capacity.

The determination of the most reliable ageing method for the rudd (Scardinius erythrophthalmus L., 1758) population in Lake Ladik, Samsun, Turkey

Ages estimated from scales, vertebrae, opercles, utricular (lapillus) and lagenar (asteriscus) otoliths of 260 rudd (Scardinius erythrophthalmus L., 1758) specimens captured from Lake Ladik in February and March 2010 were compared to determine the most reliable ageing method. Three readings were made for each bony structure by one reader. Mean ages were determined for all bony structures and precision of ages obtained from multiple readings was evaluated calculating percent agreement (PA), average percent error (APE) and coefficient of variation (CV). Due to the highest PA (71.71 %) and the lowest APE (2.71 %) and CV (3.56 %) values, it was concluded that lapillus is the most reliable bony structure for age determination in Lake Ladik population of this species. When lapillus ages were compared with other bony structures, the highest precision was found between lapillus and asteriscus age readings.

population in Lake Ladik, Samsun, Turkey.

Ages estimated from scales, vertebrae, opercles, utricular (lapillus) and lagenar (asteriscus) otoliths of 260 rudd (Scardinius erythrophthalmus L., 1758) specimens captured from Lake Ladik in February and March 2010 were compared to determine the most reliable ageing method. Three readings were made for each bony structure by one reader. Mean ages were determined for all bony structures and precision of ages obtained from multiple readings was evaluated calculating percent agreement (PA), average percent error (APE) and coefficient of variation (CV). Due to the highest PA (71.71 %) and the lowest APE (2.71 %) and CV (3.56 %) values, it was concluded that lapillus is the most reliable bony structure for age determination in Lake Ladik population of this species. When lapillus ages were compared with other bony structures, the highest precision was found between lapillus and asteriscus age readings.