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Abstract

In this study, the determining the main spermatological properties of the brook trout (Salvelinus fontinalis Mitchill, 1814) by the changes in sperm quality were investigated during the spawning season. Twenty brook trout brood stock males were used during the spawning season. The sperm volume, spermatozoa motility, duration of spermatozoa movement, spermatozoa concentration, spermatokrit rate and semen pH in obtained were determined. It was observed that the production of sperm in trout begins in October and ends in March. The increasing in amount of sperm stared in October and the maximum level (8.10±0.86 ml) was recorded in December (p<0.05). During the spawning season, average motility ranged from 64.60±10.03% to 98.30±1.67%; motility duration varied from 38.30±4.26 to 60.70±4.70 s (p>0.05). The highest density of spermatozoa were obtained as 9,10±1,16x10 sp/ml in November, whereas the lowest in March as 2.42±1.30x109 sp/ml; the highest rate of spermatokrit was found as 23.71±2.26% in January and the lowest in March as 13.28±4.67% (p>0.05). The lowest pH value was observed as 6.87±0.03 in November and the highest value was obtained as 7.67±0.17 in March (p<0.05)

Keywords

• Brook trout, Salvelinus fontinalis, Sperm, Sperm quality, Spawning season

Üreme Mevsimi Boyunca Kaynak Alabalığı (Salvelinus fontinalis Mitchill, 1814) Sperma Kalitesindeki Değişimler

Abstract

Bu araştırmada kaynak alabalığının başlıca spermatolojik özellikleri belirlenerek, üreme mevsimi boyunca sperma kalitesinde meydana gelen değişimler araştırılmıştır. Araştırmada üreme sezonu boyunca 20 adet erkek damızlık kaynak alabalığı kullanılmıştır. Sperma miktarı, motilite oranı, motilite süresi, sperma yoğunluğu, spermatokrit oranı ve sperma pH’sı belirlenmiştir. Kaynak alabalıklarında sperma üretiminin ekim ayında başladığı ve mart ayında sona erdiği gözlenmiştir. Ekim ayından itibaren artmaya başlayan sperma miktarının aralık ayında 8,10±0,86 ml ile maksimum düzeye çıktığı saptanmıştır (p<0,05). Üreme mevsiminde ortalama motilite %64,60±10,03 ile %98,30±1,67, motilite süresi 38,30±4,26 s ile 60,70±4,70 s arasında belirlenmiştir (p>0,05). Spermatozoa yoğunluğu en yüksek kasım ayında 9,10±1,16x10⁹ sp/ml, en düşük mart ayında 2,42±1,30x10⁹ sp/ml, spermatokrit oranı en yüksek ocak ayında %23,71±2,26; en düşük mart ayında %13,28±4,67 olarak tespit edilmiştir (p>0,05). pH değeri en düşük 6,87±0,03 ile kasım ayında; en yüksek 7,67±0,17 ile mart ayında tespit edilmiştir (p<0,05).

Anahtar Kelimeler: Kaynak Alabalığı, Salvelinus fontinalis, Sperma, Sperma kalitesi, Üreme mevsimi.

 

 

 

 

Changes in Brook Trout (Salvelinus fontinalis Mitchill, 1814) Sperm Quality Throughout the Reproductive Season

Abstract

In this study, the determining the main spermatological properties of the brook trout (Salvelinus fontinalis Mitchill, 1814) by the changes in sperm quality were investigated during the spawning season. Twenty brook trout brood stock males were used during the spawning season. The sperm volume, spermatozoa motility, duration of spermatozoa movement, spermatozoa concentration, spermatokrit rate and semen pH in obtained were determined. It was observed that the production of sperm in trout begins in October and ends in March. The increasing in amount of sperm stared in October and the maximum level (8.10±0.86 ml) was recorded in December (p<0.05). During the spawning season, average motility ranged from 64.60±10.03% to 98.30±1.67%; motility duration varied from 38.30±4.26 to 60.70±4.70 s (p>0.05). The highest density of spermatozoa were obtained as 9,10±1,16x10⁹ sp/ml in November, whereas the lowest in March as 2.42±1.30x10⁹ sp/ml; the highest rate of spermatokrit was found as 23.71±2.26% in January and the lowest in March as 13.28±4.67% (p>0.05). The lowest pH value was observed as 6.87±0.03 in November and the highest value was obtained as 7.67±0.17 in March (p<0.05).

Keywords: Brook trout, Salvelinus fontinalis, Sperm, Sperm quality, Spawning season.

Keywords

• Kaynak Alabalığı, Salvelinus fontinalis, Sperma, Sperma kalitesi, Üreme mevsimi

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