Çardak Lagünü’nde (Çanakkale Boğazı, Kuzeybatı Türkiye) Akivadesin, Ruditapes decussatus, Büyüme ve Hayatta Kalması

Öz

Bu çalışmada akivadesin Ruditapes decussatus Çardak Lagünü’nde (Kuzeybatı Türkiye) büyüme ve hayatta kalma potansiyeli incelenmiştir. Kum midyeleri farklı substrat özelliklerine sahip 3 istasyonda büyütülmüştür. Sonuçlar, 38.41% iri çakıl, 21.90% çakıl ve 17.16% granülden oluşan C istasyonunda yetiştirilen akivadeslerin, daha küçük tanecik kompozisyonuna sahip diğer istasyonlara göre daha fazla büyüme ve hayatta kalma sergilediklerini göstermiştir. Başlangıç boy ve ağırlıkları sırasıyla, 2,772 cm ve 4,032 g olan akivadeslerin 10 aylık çalışma sonunda, ortalama 3,612 cm boy ve 9,179 g ağırlığa ulaştıkları tespit edilmiştir. Ekim öncesi yapılan taşımanın akivadeslerin hayatta kalma oranını etkilediği gözlenmiştir. Çalışmada tespit edilen büyüme ve hayatta kalma oranları diğer çalışmalarla benzerlik gösterse de, yazın gözlenen yüksek mortalite, bundan sonra yapılacak çalışmalar için en önemli konulardan bir tanesidir.

Anahtar Kelimeler

• Avrupa Küçük Boyunlu Kum Midyesi
• Substrat
• Akdeniz
• Lagün

The Growth and Survival of Carpet Clam, Ruditapes decussatus in Çardak Estuary (Çanakkale Strait, Northwest Turkey)

Öz

The growth and survival potential of the carpet clam, Ruditapes decussatus, in Çardak estuary (Northwest Turkey) were investigated. Clams were grown in 3 different locations with different substrate characteristics. Results indicated that clams grown in larger size substrate (Station C) composed of 38.41% cobble, 21.90% pebble and 17.16% granule by weight had higher growth and survival compared to those grown in substrates composed of smaller size fractions. Clams planted with a mean length and wet weight of 2.772 cm and 4.032 g, reached a mean length and wet weight of 3.614 cm and 9.179 g at the end of 10 months. Transportation before planting had considerable effect on clam survival. In addition, mortality rates during summer were considerably higher in all stations than other seasons. Although the mean growth and survival rates of clams observed were similar to previously reported values, high summer mortality remains to be the most important factor for further investigations.

Anahtar Kelimeler

• European little neck clam,
• substrate
• Mediterranean
• lagoon

Kaynakça

1. Breber, P. (1985). On-growing of the carpet shell clam, Tapes decussatus (L): Two years experience in Venice Lagoon. Aquaculture, 44, 51-56.
2. Chessa, L.A., Paesanti, F., Pais, A., Scardi, M., Serra, S., & Vitale, L. (2005). Perspectives for development of low impact aquaculture in awestern Mediterranean lagoon: the case of the carpet clam Tapes decussatus. Aquaculture Int., 13, 147–155.
3. Craig, M.A., & Bright, T.J. (1986). Abundance, age distribution and growth of the Texas hard clam, Mercanaria mercanaria texana, in Texas bays. Contributions in Marine Science, 29, 59-72.
4. Jara-Jara, R., Pazos, A.J., Abad, M., Garcia-Martin, L.O., & Sanchez, J.L. (1997). Growth of clam seed (Ruditapes decussatus) reared in the wastewater effluent from a fish farm in Galicia (N. W. Spain). Aquaculture, 158, 247-262.
5. Laing, I., Utting, S.D., & Kilada, R.W. (1987). Interactive effects of diet and temperature on the growth of juvenile clams. Journal of Experimental Marine Biology and Ecology, 113, 23–38.
6. Mathias D., Joaquim S., Matias A. M., Paula M., de Sousa J.T., Sobral, P., & Leitão, A. (2013). The reproductive cycle of the European clam Ruditapes decussatus (L., 1758) in two Portuguese populations: Implications for management and aquaculture programs. Aquaculture, 406-407, 52-61.
7. Paterson, K.J., & Nell, A.J. (1997). Effect of different growing techniques and substrate types on the growth and survival of the clams Tapes dorsatus (Lamarck) and Katelysia rhytiphora (Lamy). Aquaculture Research, 28, 707–715.
8. Puigcerver, M. (1996). Analysis on individual growth of juvenile carpet shell clams, Tapes decussatus (L.), in three different rearing conditions employed in the Ebro’s Delta, Spain. Aquaculture Research, 27, 399–404.

9. Serdar, S., Lök, A., Köse, A., Yıldız, H., Acarlı, S., & Goulletquer, P. (2007). Growth and survival rates of carpet Shell clam (Tapes decussatus, Linnaeus 1758 using various culture methods in Sufa (Homa) lagoon, İzmir, Turkey. Aquacultural Engineering, 37, 89-99.
10. Sladonja, B., Bettoso, N., Zentilin, A., Tamberlich, F., & Acquavita, A. (2011). Manila Clam (Tapes philippinarum Adams & Reeve, 1852) in the Lagoon of Marano and Grado (Northern Adriatic Sea, Italy): Socio-Economic and Environmental Pathway of a Shell Farm. In B. Sladonja (Ed), Aquaculture and the Environment : A Shared Destiny (pp. 52-78): In Tech Croatia.
11. Toba, D.R., Tompson, D.S., Chew, K.K., Anderson, G.J., & Miller, M.B. (1992). Guide to Manila Clam Culture in Washington. Sea Grant Programme, University of Washington, Seattle, WA, USA, p. 80.
12. Vilela, H. (1950). Vida Bentonica de Tapes decussatus (L.). Travaux de la Station de Biologie Maritime de Lisbonne, 53, 120 pp.
13. Walne, P.R. (1976). Experiments on the culture in the sea of the butterfısh Venerupis decussata L. Aquaculture, 8, 371-381.