Age, Growth and Reproductive Period of White Bream, Blicca bjoerkna  (L., 1758) in Lake Ladik, Turkey

Yılmaz, Savaş; Yazıcıoğlu, Okan; Yazici, Ramazan; Polat, Nazmi

doi:10.17216/limnofish.205729

Cited by 18 publications

(16 citation statements)

References 14 publications

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“…In the investigated sites, more females than males were caught, therefore the results for males were based on a lower number of specimens. In other locations, females also quantitatively dominated over males, with a female-to-male ratio of 1 : 0.35 in Lake Kuş (Balık et al 1999-cited after Yılmaz et al 2012, and 1 : 0.53 in Lake Sapanca (Hamalosmanoğ-lu 2003-cited after Yılmaz et al 2012), although other authors recorded more equal proportions of the sexes: 1 : 1.07 in Lake Sapanca (Gürsoy unpublished * ) and 1 : 0.98 in Ladik Lake (Yılmaz et al 2012(Yılmaz et al , 2015.…”

Section: Discussionmentioning

confidence: 99%

Sexual cycle of white bream, Blicca bjoerkna (Actinopterygii, Cypriniformes, Cyprinidae), from three sites of the lower Oder River (NW Poland) differing in temperature regimes

Domagała

Dziewulska

Kirczuk

et al. 2015

Acta Ichthyol. Piscat.

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Domagała J., Dziewulska K., Kirczuk L., Pilecka-Rapacz M. 2015. Sexual cycle of white bream, Blicca bjoerkna (Actinopterygii, Cypriniformes, Cyprinidae), from three sites of the lower Oder River (NW Poland) differing in temperature regimes. Acta Ichthyol. Piscat. 45 (3): 285-298.Background. One of the largest European populations of white bream, Blicca bjoerkna (Linnaeus, 1758), can be found in the estuary of the Oder River. This fi sh is not only very abundant in this area but also attains sizes that have no match in other areas of central Europe. In search for the clues behind such reproductive success we decided to study the annual development cycle of gonads of white bream from three sites in the lower Oder River, north-western Poland, differing in temperature regimes (depending on their position and the distance from the discharge outlet of the Dolna Odra Power Plant). Materials and methods. White bream individuals were obtained from the three sites as bycatch of commercial fi shing in 2009 and 2010. Three sites were sampled: (1) the Oder River above the power plant, (2) the warm-water canal with post-cooling water discharged from the power plant, and (3) Lake Dąbie, 20 km below the warm-water canal. The fi sh age was determined as 2+ through 9+. In total, 506 females and 190 males were designated for histological analyses. The analysis of the annual cycle of gonad development was performed in both sexes using histological methods. A standard paraffi n technique and Heidenhain's iron hematoxylin staining were used. Results. In the Oder River, spawning of white bream lasted from early May to late June. In Lake Dąbie, it extended until the beginning of July. The spawn was laid in 2 or 3 portions. In the warm-water canal spawning began one month earlier, in April. The bream males from the thermally unaffected Oder River were ready for reproduction approximately one month earlier than the females and maintained their reproductive potential similarly to the females. Males from the warm-water canal became sexually mature two months earlier (February) than those from the river above the power plant. Conclusion. In waters with elevated temperature, gametogenesis of white bream occurs without problems and the fi sh exhibit a typical pace of growth depending on the temperature. In the perspective of climate warming, white bream will be able to maintain its status of a common species in the natural waters of the region.

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Section: Discussionmentioning

confidence: 99%

Sexual cycle of white bream, Blicca bjoerkna (Actinopterygii, Cypriniformes, Cyprinidae), from three sites of the lower Oder River (NW Poland) differing in temperature regimes

Domagała

Dziewulska

Kirczuk

et al. 2015

Acta Ichthyol. Piscat.

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“…Secondly, lo w feeding intensity in summer and spring could be attributed to reproduction season of the white bream. Yılmaz et al (2015) stated that spawning season of the wh ite bream population in Lake Ladik is between May and June. Sourinejad et al (2015) indicated that most aquatic animals generally do not feed during the reproductive period, or their feeding habits are greatly decreased and there is a relat ionship between the reproductive season and feeding activity.…”

Section: Discussionmentioning

confidence: 99%

“…The white bream does not have any commercial value because of its unpleasant taste (Yılmaz et al, 2015) and having a great nu mber of intermuscular bones (Okgerman et al, 2012). However, it is an important food supply for predator species inhabiting aquatic habitats.…”

Section: Introductionmentioning

confidence: 99%

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Yazıcıoğlu¹,

Yılmaz²,

Yazici³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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Food and feeding habits of white bream, Blicca bjoerkna specimens captured from Lake Ladik between November 2009 and October 2010 were investigated with respect to length groups and seasons. Stomach contents of 207 individuals ranging in size from 115 to 243 mm fork length were analyzed and 23.67% were empty. There was a seasonal variation in the feeding intensity of this species. The spring and summer feeding intensity were quite lower than other seasons. The food items in stomach showed a wide spectrum, ranging from phytoplankton, macrophytes, zooplankton to aquatic insects. Therefore, white bream displayed an omnivorous feeding. The relative importance index (RII%) indicated that Bosmina, M acrophytes, Chironomid larvae, Melosira, Navicula, Cymbella and Cyclopoid copepod were the most importance food items of white bream. The feeding strategy indicated that white bream plays an accelerator role in eutrophication. According to the Schoener's overlap index values, there was a high degree of consumed food overlap between spring-autumn (C xy = 0.78095) and summer-winter (C xy = 0.92035).

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“…Spawning of the white bream in different regions of Europe takes place in a similar period from the beginning of May to the end of June, or even to the beginning of July in Poland , Northern Russia (Berg, 1949), Belgium (Rinchard & Kestemont ,1996;2003), Germany (Spratte & Hartmann, 1997;Molls, 1999). The earliest spawning was recorded in Turkey in April (Yılmaz et al, 2012;Okgerman et al, 2012). Spawning only in May has been observed in the waters of Russia (Slastenenko, 1956) and Austria (Hacker, 1979).…”

Section: Biotopesmentioning

confidence: 98%

Assessment of the impact of seasonal patterns climatic conditions on spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758) in astronomical and biological time

Bondarev

Кунах

Жуков

2018

abs

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This paper describes spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758)in astronomical and biological time depending on seasonal patterns of climatic conditions. The research was conducted in the "Dnipro-Orilskiy" Nature Reserve (Ukraine) during the years 1997-2015 in four habitat types. The timing of the spawning event (start, end) was evaluated using astronomical time (number of days from January 1 each year), with correction for the lunar and the semilunar cycle, and using biological time (number of days from the end of spawning in the previous year to the beginning and end of spawning in the current year). The spawning phenology of the white bream was found to be dependent on the dynamics of weather conditions over time. Patterns of varying climatic regimes which are expressed by means of multivariate principal component are the most informative predictors of the spawning events. Evaluation of occurrence of spawning events in astronomic or biological time gives somewhat different models of the impact of climate regimes. The impact of the principal components indicating variability of rainfall during the year in which spawning occurs is statistically significant for almost all regression models. Models using the solar calendar are also more sensitive to the course of air temperatures within the year when spawning occurred. Correction of time based on the lunar cycle allows us to assess events which are sensitive also to the temperature and rainfall variation during the second half of the previous year. Biological time was shown to be sensitive to environmental influences over time from the end of spawning in the previous year to spawning in any given year.

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Age, Growth and Reproductive Period of White Bream, Blicca bjoerkna (L., 1758) in Lake Ladik, Turkey

Cited by 18 publications

References 14 publications

Sexual cycle of white bream, Blicca bjoerkna (Actinopterygii, Cypriniformes, Cyprinidae), from three sites of the lower Oder River (NW Poland) differing in temperature regimes

Sexual cycle of white bream, Blicca bjoerkna (Actinopterygii, Cypriniformes, Cyprinidae), from three sites of the lower Oder River (NW Poland) differing in temperature regimes

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Assessment of the impact of seasonal patterns climatic conditions on spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758) in astronomical and biological time

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