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Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823)

Cilt: 43 Sayı: 3 29 Temmuz 2026
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Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823)

Öz

The narrow-clawed crayfish, Pontastacus leptodactylus, is an economically significant species recognized for its high ecological resilience, particularly its ability to thrive in brackish environments. This research investigated the impact of various salinity levels (0, 2.5, 5, and 10 ppt) on the survival and growth metrics of second-stage juveniles during a 25-day experimental trial. A total of 160 individuals (initial mean weight: 0.033±0.001 g) were allocated into four treatment groups, with each group conducted in quadruplicate. The data indicated that growth performance parameters, such as total length, final weight, and specific growth rate (SGR), were not significantly altered by the salinity treatments (p > 0.05), demonstrating that somatic growth was sustained across the tested salinity gradient. In contrast, survival was significantly affected by environmental salinity (p<0.05). The maximum survival rate was recorded at 5 ppt (52.5±2.50%), followed by the 10 ppt (45.0±6.45%) and 2.5 ppt (30.0±4.08%) groups, whereas the freshwater control group had the lowest survival (12.5±9.46%). These results indicate that moderate salinity (5 ppt) can optimize survival in juvenile crayfish without impairing growth performance. Implementing low-salinity rearing strategies could effectively address the high mortality rates often observed during the sensitive nursery phase of P. leptodactylus.

Anahtar Kelimeler

Etik Beyan

Local Ethics Committee Approval was not obtained because experimental invertebrate animals were used in this study.

Kaynakça

  1. Alvanou, M.V., & Giantsis, I.A. (2022). Pontastacus leptodactylus (narrow-clawed crayfish). CABI Compendium. https://doi.org/10.1079/cabicompendium.92630
  2. Audo, D., Hasiotis, S.T., & Kawai, T. (2023). Diversity and evolutionary history of fossil crayfishes. Journal of Crustacean Biology, 43(4), 1-17. https://doi.org/10.1093/jcbiol/ruad079
  3. Bissattini, A.M., Traversetti, L., Bellavia, G., & Scalici, M. (2015). Tolerance of increasing water salinity in the red swamp crayfish Procambarus clarkii. Journal of Crustacean Biology, 35(5), 682 685. https://doi.org/10.1163/1937240X-00002366
  4. Cherkashina, N. Y. (1975). Distribution and biology of crayfishes of genus Astacus (Crustacea, Decapoda, Astacidae) in the Turkmen Waters of the Caspian Sea. Freshwater Crayfish, 2, 553-555.
  5. González, A., Celada, J.D., González, R., García, V., Carral, J.M., & Sáez-Royuela, M. (2008). Artemia nauplii and two commercial replacements as dietary supplement for juvenile signal crayfish, Pacifastacus leniusculus (Astacidae), from the onset of exogenous feeding under controlled conditions. Aquaculture, 281(1 4), 83 86. https://doi.org/10.1016/j.aquaculture.2008.06.015
  6. González, R., Celada, J.D., García, V., Carral, J.M., González, Á., & Sáez‐Royuela, M. (2011). Shelter and lighting in the intensive rearing of juvenile crayfish (Pacifastacus leniusculus, Astacidae) from the onset of exogenous feeding. Aquaculture Research, 42(3), 450-456. https://doi.org/10.1111/j.1365-2109.2010.02641.x
  7. Harlioğlu, A.G., & Harlioğlu, M.M. (2009). The status of freshwater crayfish (Astacus leptodactylus Eschscholtz) fisheries in Turkey. Reviews in Fisheries Science, 17(2), 187 189. https://doi.org/10.1080/10641260802645311
  8. Hesni, M.A., Shabanipour, N., Zahmatkesh, A., & Toutouni, M.M. (2009). Effects of temperature and salinity on survival and moulting of the narrow-clawed crayfish, Astacus leptodactylus Eschscholtz, 1823 (Decapoda, Astacidea). Crustaceana, 82(12), 1495 1507. https://doi.org/10.1163/001121609X12511103974411

Ayrıntılar

Birincil Dil

İngilizce

Konular

Kabuklu Su Ürünleri Yetiştiriciliği

Bölüm

Araştırma Makalesi

Yazarlar

Yayımlanma Tarihi

29 Temmuz 2026

Gönderilme Tarihi

3 Mayıs 2026

Kabul Tarihi

20 Temmuz 2026

Yayımlandığı Sayı

Yıl 2026 Cilt: 43 Sayı: 3

DOI

https://doi.org/10.12714/egejfas.43.3.15

IZ

https://izlik.org/JA27UX79JW

Kaynak Göster

RIS / Bibtex
APA
Özdoğan, H. B. E. (2026). Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823). Ege Journal of Fisheries and Aquatic Sciences, 43(3), 307-312. https://doi.org/10.12714/egejfas.43.3.15
AMA
1.Özdoğan HBE. Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823). EgeJFAS. 2026;43(3):307-312. doi:10.12714/egejfas.43.3.15
Chicago
Özdoğan, Hasan Batuhan Emre. 2026. “Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823)”. Ege Journal of Fisheries and Aquatic Sciences 43 (3): 307-12. https://doi.org/10.12714/egejfas.43.3.15.
EndNote
Özdoğan HBE (01 Temmuz 2026) Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823). Ege Journal of Fisheries and Aquatic Sciences 43 3 307–312.
IEEE
[1]H. B. E. Özdoğan, “Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823)”, EgeJFAS, c. 43, sy 3, ss. 307–312, Tem. 2026, doi: 10.12714/egejfas.43.3.15.
ISNAD
Özdoğan, Hasan Batuhan Emre. “Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823)”. Ege Journal of Fisheries and Aquatic Sciences 43/3 (01 Temmuz 2026): 307-312. https://doi.org/10.12714/egejfas.43.3.15.
JAMA
1.Özdoğan HBE. Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823). EgeJFAS. 2026;43:307–312.
MLA
Özdoğan, Hasan Batuhan Emre. “Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823)”. Ege Journal of Fisheries and Aquatic Sciences, c. 43, sy 3, Temmuz 2026, ss. 307-12, doi:10.12714/egejfas.43.3.15.
Vancouver
1.Hasan Batuhan Emre Özdoğan. Effects of salinity on growth performance and survival of second-stage juvenile Pontastacus leptodactylus (Eschscholtz, 1823). EgeJFAS. 01 Temmuz 2026;43(3):307-12. doi:10.12714/egejfas.43.3.15