Bu çal›flmada, Karadeniz’de Sinop yar›m adas› civar›nda, üç karides türünün, Crangon crangon, Palaemon adspersus ve Palaemon elegans, yumurta verimi ve yumurta büyüklü¤ü çal›fl›lm›flt›r. Karides örneklemeleri kirifl uzunlu¤u 3 m ve torba a¤ göz aç›kl›¤› 10 mm olan kiriflli trol ile yap›lm›flt›r. Difli C. crangon türünün yumurta say›s› ortalama 2297 ± 134 (910-3630 aras›nda) olarak belirlenmifltir. Erken ve geç embriyo geliflme safhas›nda ortalama yumurta çap› (k›sa eksen x uzun eksen) s›ras›yla, 0,472 ± 0,005 mm x 0,509 ± 0,008 mm ve 0,489 ± 0,003 mm x 0,627 ± 0,004 mm olarak saptanm›flt›r. Difli P. adspersus türünün yumurta say›s› ortalama 1963 ± 144 (758-3710 aras›nda) olarak belirlenmifltir. P. adspersus türünün erken ve geç embriyo geliflme  safhas›nda ortalama yumurta çap› (k›sa eksen x uzun eksen) s›ras›yla, 0,585 ± 0,005 mm x 0,739 ± 0,011 mm ve 0,622 ± 0,005mm x 0,851 ± 0,008 mm olarak tespit edilmifltir. P. elegans türünün yumurta say›s›n›n ortalama 1057±88 (308-2628 aras›nda) oldu¤u belirlenmifltir. Erken ve geç embriyo geliflme safhas›nda ortalama yumurta çap› ise (k›sa eksen x uzun eksen) s›ras›yla, 0,455 ± 0,005 mm x 0,567 ± 0,007 mm ve 0,479 ± 0,008 mm x 0,707 ± 0,007 mm olarak tespit edilmifltir. Ayr›ca, karides türlerinde yumurta verimi ile boy aras›nda pozitif bir iliflkinin oldu¤u ve embriyo geliflim süresince yumurta çap›n›n artt›¤› belirlenmifltir. Varyans analizi sonuçlar›na göre erken ve geç embriyo safhas›nda ortalama yumurta çaplar› aras›ndaki fark›n önemli (P < 0,05) oldu¤u belirlenmifltir.

The fecundity and egg size of 3 shrimp species, Crangon crangon, Palaemon adspersus, and Palaemon elegans, were studied off Sinop Peninsula in the Black Sea. Shrimps were sampled by beam trawl with a beam length of 3 m and 10 mm codend mesh size. Mean fecundity of C. crangon females was 2297 ± 134 (range: 910-3630). Mean egg size (shortest x longest axis) at early and late embryonic development stages was 0.472 ± 0.005 mm x 0.509 ± 0.008 mm and 0.489 ± 0.003 mm x 0.627 ± 0.004 mm, respectively. Mean fecundity of female P. adspersus was 1963 ± 144 (range: 758-3710). Mean egg size (shortest x longest axis) at early and late embryonic development stages was 0.585 ± 0.005 mm x 0.739 ± 0.011 mm and 0.622 ± 0.005 mm x 0.851 ± 0.008 mm, respectively. Mean fecundity of female P. elegans was 1057 ± 88 (range: 308-2628). Mean egg size (shortest x longest axis) at early and late embryonic development stages was 0.455 ± 0.005 mm x 0.567 ± 0.007 mm and 0.479 ± 0.008 mm x 0.707 ± 0.007 mm, respectively. Fecundity of all species was positively correlated to the size of the individuals. Egg size for each species increased with increased embryonic development stages. ANOVA results showed that mean egg size was significantly different between early and late embryonic developmental stages of all shrimp species (P < 0.05).