Fricke, Ronald

Saylar, Ömer

Sığırcı, Ulus

Sungur, Sevil

Çiçek, Erdoğan

English

Nevsehir Haci Bektas Veli University Institutional Repository (DSpace@NEVU)

Iranian Journal of Fisheries Sciences                                 15(3)1237-1245                                        2016  Age, growth and mortality of Caspian Spirlin, Alburnoides eichwaldii (De Filippi, 1863), from Aras River Basin in Turkey  Cicek E. 1*; Sigirci U.1; Birecikligil S.1; Saylar Ö2.  Received: February 2015                     Accepted: October 2015  1- Department of Biology, Faculty of Art and Sciences, Nevşehir Hacı Bektaş Veli University, Nevşehir, TURKEY 2- Division of ScienceTeaching, Faculty of Education, Gazi University, Beşevler, 06500 Ankara, TURKEY *Correspondingauthor’s Email: erdogancicek@yahoo.com  Keywords: Caspian spirlin, Alburnoides eichwaldii, Aras River, Çıldır Lake, Balık Lake  Introduction The genus Alburnoides belongs to the Leuciscine cyprinids and is distributed in Europe and eastern parts of Asia. Only two subspecies have been consistently reported for Alburnoides bipunctatus (Heckel, 1858) from Turkey (Kuru, 2004), A. bipunctatus eichwaldii and A. bipunctatus fasciatus. Just a few years ago, some taxonomic work focusing on the genus Alburnoides reported 4 new species from Turkey (Turan et al., 2013; 2014).       Alburnus eichwaldii (De Filippi, 1863), described from the Kurpresso Tiflis (Kura River near Tbilisi, Georgia), is usually regarded as a Caspian Sea basin subspecies of A. bipunctatus (Bogustkaya, 1997; Nazari et al., 2009). Recently, the species was considered to be a full species (Fricke et al., 2007).      A. eichwaldii inhabits both lentic and lotic water bodies, with well-oxygenated clear water (Stepanyan et al., 2013). Because of low tolerance to water pollution it is considered as a good biological indicator of environmental quality (Abbasi et al., 2013a). A. eichwaldii does not have economic value however it plays an important role because it is an important prey item of many predator fish species while its main food items are plankton and some invertebrates, mostly diptera and ephemeroptera (Abbasi et al., 2013a).      There are several papers dealing with the Karyotype (Stepanyan et. al., 2013) in Armenia and diet (Abbasi et al., 2013a), hematological parameters (Kohanestani et al., 2013), body shape (Eagderi et al., 2013), some population parameters (Seifali et al., 2012; Abbasi 1238 Cicek et al., Age, growth and mortality of Caspian Spirlin, Alburnoides eichwaldii …  et al., 2013b; Monajjemi et al., 2014; Nowferesti et al., 2014) in Iran. However, there has not been any study conducted on population dynamic parameters of the species in Turkey. Therefore this study aimed to investigate population parameters including age, growth, mortality and exploitation rates of A. eichwaldii from Aras River basin in Turkey.   Material and methods This investigation was carried out on August 2-6, 2014 and September 25-29, 2014 from Aras River Basin at stations in both rivers and lakes (Çıldır, Balik and Aygir). A total of 162 specimens were caught using a backpack electrofisher (SAMUS 725MP) in the river and 90 specimens were caught using multi-mesh gillnets (5, 6.25, 8, 10, 12.5, 15.5, 19.5, 24, 29, 35, 43, 55 mm, knot to knot) in the lakes. Collected specimens were fixed in 10% formalin, transferred to the laboratory and stored in 70% ethanol for further processing. Five of the specimens were cataloged (NHVIC 201408080) in the Ichthyology Collections of Nevsehir Haci BektasVeli University, Department of Biology, Nevsehir, Turkey.      Morphometric measurements and meristic counts based on Bogutskaya and Coad (2009) were made for comparison with other studies. The taxonomic key given by Berg (1949a, b), Bogutskaya and Coad (2009), Coad and Bogustkaya (2009) were used to identify the samples to the lowest taxonomic level. Morphometric characters were taken with digital calipers to the nearest 0.1 mm and meristicones were counted under magnifier or stereo microscope. All measurements and counts were made on the left side of the fish.       In order to determine the population parameters, the total length and weight were determined to the nearest 1 mm and 0.01 g respectively. The scale samples were removed from the left side of the fish body, from ventral to the dorsal fin for the age determination. Scales were soaked in water and examined under the stereo binocular microscope, independently twice with no reference to the previous readings and without any knowledge of the length or weight of the fish. The precision was measured by the percentage of agreement between the two readings (Chang, 1982). The assessment of age was based on the determination of the number of annuli on each scale.       The length-frequency data were plotted with 1 cm length intervals. The length-weight relationships were determined according to the power equation given by Sparre and Venema (1998): W=a*Lb. In this equation, W is total weight, a and b are regression constants and L is total length. Growth in length and weight were expressed in terms of the von Bertalanffy equation Lt=L1-e-k(t-to).The growth parameters L, k and to were estimated using the Least Squares Method recommended by Sparre and Venema (1998). Iranian Journal of Fisheries Sciences 15(3) 2016                                      1239 Correspondence between empirical data and an expected distribution was tested by Khi2 test. The b value was tested by t-test to verify whether it was significantly different from the isometric growth (b: 3).      The growth performance index (Φꞌ) was calculated using the formula (Pauly and Munro, 1984): Φ ́́=logk+2logL∞. Fulton’s condition factor (K) was calculated by the following equation: where; W: total weight, L: total length, b: regression constant (Sparre and Venema, 1998).      The instantaneous rate of total mortality coefficient Z was estimated using Beverton and Holt’s Z Equation (1956): , where;  is the mean length of the entire catch, Lꞌ is the lower limit of corresponding length intervals (Sparre and Venema, 1998). The natural mortality coefficient (M) was estimated following Pauly’s empirical formula (Pauly, 1980), linking the natural mortality with the von Bertalanffy parameters, L∞(cm), k and mean annual temperature (T,°C) of water in habitat (in this case 9.3°C): Log10M=-0.0152-0.279log10L∞+0.6543Log10k+0.463Log10T. Fishing mortality rates (F) was calculated as the difference between Z and M (F=Z-M). The value of the average annual exploitation rate (E) was obtained by E=F/Z (Sparre and Venema, 1998).     Wilcoxon signed-rank test was performed to compare river and lakes samples. Chi-Square test (χ2) was used to compare observed and estimated parameters.  Results and discussion Age, frequency distributions in length and weight of A. eichwaldii are presented in Table 1. There were significant differences in the parameters between the specimens of river and lake (p<0.05). Therefore, all analyses and evaluations were performed separately for river samples and lake samples.      Age of A. eichwaldii varied from 0 to III year age groups and most frequent groups for river and lakes were 0 (42.0%) and I (33.3%) year age groups, respectively. The total length ranged between 3.2 and 13.0 cm (8.98±2.11 cm) for river and 7.3 and 13.0 cm (9.63±2.08 cm) for lake samples. It was evident that A. eichwaldii grew rapidly in their first year after which growth rate declined (Table 1).      Monajjemi et al. (2014) reported that age of A. eichwaldii varied from 0 to III year age groups and the most frequent groups was the age group 0 in Shirud River (Iran). The maximum total length and weight observed was 111.4 mm and 15.5 g with the mean of 68.33±16.92 mm and 4.9±3.2 g, respectively in this study. Age distribution has been revealed as 0-II, and the length distribution as 2.53-11.02 cm according to Abbasi (2013b) in Tilaban Creek. In another study the length range was reported as 2.5-11.02 cm (n: 47) in Tilaban Creek, 4.06-11.68 cm (n: 66) in Shirabad Creek and 5.47-11.15cm in Kaboodval Creek (Abbasi et al., 2013a).  1240 Cicek et al., Age, growth and mortality of Caspian Spirlin, Alburnoides eichwaldii …   Table 1: Age, length and weight-frequency distribution of Caspian spirlin, Alburnoides eichwaldii, in Aras River Basin.    River Samples  Age N %n                        Total Length (cm) Total Weight (g) Mean Range Growth rate (%) Mean Range 0 68 42.0 6.97±1.33 3.2-9.8  3.85±2.43 0.21-9.20 I 44 27.2 9.48±0.67 8.0-11.6 36.00 9.13±2.05 5.15-15.52 II 30 18.5 10.90±0.62 9.9-12.3 14.96 14.33±2.65 9.77-19.94 III 20 12.3 11.77±0.85 10.0-13.0 7.90 18.16±3.39 11.12-23.17 Σ 162  8.98±2.11 3.2-13.0  8.99±5.68 0.21-23.17    Lake Samples  0 9 16.7 5.54±0.91 7.3-9.0  2.50±1.28 4.01-7.39 I 30 33.3 9.45±0.82 9.0-10.5 17.28 12.12±3.26 7.47-13.58 II 24 26.7 11.25±0.81 9.5-12.0 13.43 20.05±4.73 8.12-24.28 III 21 23.3 14.75±2.33 11.6-13.0 11.22 39.31±15.27 19.51-27.67 Σ 90  9.63±2.08 7.3-13.0  13.96±7.91 4.01-27.67    Growth performance, condition factor, mortality and exploitation rate of the Caspian spirlin have been reported in a few studies.      Growth performance index (Φꞌ) was estimated as 4.11 by Seifali et al. (2012) and 4.24 Abbasi et al. (2013b).The index was not estimated for this species previously.       There is a striking similarity among all river populations whereas the parameters estimated for lake were quite different from others. The results showed a significant difference in A. eichwaldii population inhabiting the river and the dam in terms of body shape.      The observed differences were related to head, snout, caudal peduncle regions and eye diameter that could be an adaptation to altered habitat and hydrological conditions of upstream and downstream due to damming (Eagderi et al., 2014). For a long time, the influence of environmental factors on fish has been studied in respect to their effects on fish growth. Because fish are ectotherms, growth of fish is highly dependent on temperature. But other factors are also involved in the control of physiological functions (Boeuf and Le Bail, 1999). Consequently, all of these factors have impact on population parameters.      The length-weight relationship and von Bertalanffy growth parameters for A. eichwaldii are presented in Fig. 1. The relationship is determined as W=0.00644L3.2221 (95% CI of b: 3.151-3.293) for rives and W=0.00651L3.3714 (95% CI of b: 3.225-3.518) for lakes. The b value was not significantly different than 3.0 (p<0.001), which indicates isometric growth of A. eichwaldii.        1241 Cicek et al., Age, growth and mortality of Caspian Spirlin, Alburnoides eichwaldii …    Figure 1: Length-weight relationship of Caspian spirlin, Alburnoides eichwaldii, sampled from the stations of river (a) and lakes (b) in Aras River Basin.  Table 2: Length-weight relationship and von Bertalanffy growth parameters for Caspian spirlin, Alburnoides eichwaldii (*females, **males, ***combined sexes) B a L∞ (cm) k (year-1) t0 (year) Φꞌ K Habitat Country References 3.122*** 0.000006 10.45 1.19  4.11  River Iran Seifali et al. 2012 2.919* 0.005 12.45 0.248 -0.39 4.24  River Iran Abbasi et al., 2013b 2.876** 0.005 11.66 0.281 -0.39   River Iran Abbasi et al., 2013b 2.944*** 0.0145 12.08 0.55 -0.47   River Iran Monajjemi et al., 2014 3.290*** 0.0046      River Iran Nowferesti et al., 2014 3.221*** 0.0064 12.91 0.548 -1.41 1.96 1.08 River Turkey This study 3.371*** 0.0065 16.36 0.237 -2.89 1.80 1.19 Lake Turkey This study  Iranian J urnal of Fisheries c ences 15(3) 2016                               1341  1242 Cicek et al., Age, growth and mortality of Caspian Spirlin, Alburnoides eichwaldii …  The length-weight relationship reported from Iran is given in Table 2. As can be seen in the table, b value was close to 3 or above 3. The highest value (3.371) was estimated to be lake population in this study. The length-weight relationship may be influenced by sex, maturity, geographical location and environmental conditions in the given year (Weatherley and Gill, 1987). Additionally, sampling bias due to the collection method could influence the size frequency distribution and finally the estimation of parameters.  Considering the values determined in the previous studies, all values were higher than that of this study (Table 2). When reporting as the annual average water surface temperature of 12.46 °C in Iran, it has been measured at  approximately 5-6°C in this studied area. Certain environmental factors such as water temperature, food supply, poor water quality, physical disturbance and biology of fish such as maturity and hormones have an obvious and major influence on growth rate (Kapoor and Khanna, 2004). Therefore the difference among studies linked with these factors.      Instantaneous total (Z), natural (M) and fishing (F) mortalities were estimated as 0.88, 0.75 and 0.13 year-1, respectively for river samples and 0.39, 0.37 and 0.02 year-1, respectively for lake samples. The exploitation rate (E) was calculated as 0.15 and 0.05 for river and lake samples, respectively.      Mortality and exploitation rates were estimated by Seifali et al. (2012) and Monajjemi et al., (2014) given in Table 3. There was over fishing pressure on the population of A. eichwaldii in both of these studies. However over fishing pressure was not observed neither in the river nor in the lake station in this study. Indeed, A. eichwaldii population inhabiting in rivers or lakes is not commercially fished in Aras River Basin in Turkey.      Iranian Journal of Fisheries Sciences 15(3) 2016                                            1243  Table 3: Mortality rates (year-1) of Caspian spirlin, Alburnoides eichwaldii.  Z M F E Habitat Country References 3.40 0.97 2.43 0.71 River Iran Seifali et al. 2012 2.41 1.19 1.22 0.51 River Iran Monajjemi et al., 2014 0.88 0.75 0.13 0.15 River Turkey This study 0.39 0.37 0.02 0.05 Lake Turkey This study  Acknowledgements A special thanks to my students Selda Öztürk, Burak Seçer, Yasemin Celepoğlu, Muhammed Kelleci, Batuhan Keskin and Elçin Keşir for their assistance in the laboratory. The specimens were collected during the survey of “Establishment of Our Country Specific Project of Ecological Water Quality Evaluation System” conducted by the Turkish Republic, Ministry of Water Affairs and Forestry.  References Abbasi, F., Ghorbani, R. and Yelghi, S., 2013a. Comparative analysis of the diet of the spirlin (Alburnoides eichwaldii) in the Tilabad, Shirabad and Kaboodval Streams Golestan Province, Iran. World Journal of Fish and Marine Sciences, 5, 79-83. Abbasi, F., Ghorbani, R., Yelghi, S., Hajimoradloo, A. andFazel, A., 2013b. 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Age, growth and mortality of caspian spirlin, alburnoides eichwaldii (de filippi, 1863), from aras river basin in Turkey

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Age, growth and mortality of caspian spirlin, alburnoides eichwaldii (de filippi, 1863), from aras river basin in Turkey

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