Stocking density affects the growth, survival, and cheliped injuries of third instars of narrow-clawed crayfish, Astacus leptodactylus Eschscholtz, 1823 juveniles

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dc.authoridMAZLUM, Yavuz/0000-0002-9547-0966
dc.contributor.authorMazlum, Yavuz
dc.date.accessioned2024-09-18T21:06:29Z
dc.date.available2024-09-18T21:06:29Z
dc.date.issued2007
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThe effect of stocking density on the growth and survival of Astacus leptodactylus juveniles was evaluated. Newly hatched third instars of A. leptodactylus with an average total length of 11.4 mm (TL) and an average weight of 22.4 mg were stocked in 0.14 m(2) tanks in a recirculation system at 50, 100, and 200 specimens/m(2) and reared for 120 days at 22.8 degrees C. Crayfish growth was inversely correlated with density. The mean final weights for the crayfish were 1.26, 1.16, and 0.91 g for crayfish densities of 50, 100, and 200/m(2), respectively. Survival of the crayfish was also affected by stocking density; it decreased as initial stocking density increased. The proportion of lost chelipeds was also found to be dependent on the stocking density and increased with increasing stocking density. The differences in the proportion of crayfish with cheliped injuries among animals stocked at 50/m(2), 100/m(2), and 200/m(2) were found to be 7.1%, 16%, and 29%, respectively. The yield was directly related to density (P < 0.05, R-2 = 0.95). No evidence was found for feed conversion ratio (FCR) being affected by density. Astacus leptodactylus had a normal length distribution of 11-12 mm at the beginning of the experiment. However, at the end of the experiment, the length distribution varied among animals in the three density treatments. At the densities of 100/m(2) and 200/m(2), animals had a final length range of 16-40 mm TL, showing a distinct peak at 21-25 mm TL; however, at the density of 50/m(2), the animals had a final length range of 16-41 mm TL with a distinct peak at 26-30 mm TL. In addition, the implications of the above findings for optimal intensive culture conditions for juvenile Astacus leptodactylus are discussed.en_US
dc.identifier.doi10.1163/156854007781363114
dc.identifier.endpage815en_US
dc.identifier.issn0011-216X
dc.identifier.issn1568-5403
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-34547495784en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage803en_US
dc.identifier.urihttps://doi.org/10.1163/156854007781363114
dc.identifier.urihttps://hdl.handle.net/20.500.12483/13641
dc.identifier.volume80en_US
dc.identifier.wosWOS:000248814200004en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherBrillen_US
dc.relation.ispartofCrustaceanaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFresh-Water Crayfishen_US
dc.subjectPacifastacus-Leniusculus Danaen_US
dc.subjectProcambarus-Clarkii Girarden_US
dc.subjectDecapodaen_US
dc.subjectShelteren_US
dc.subjectSizeen_US
dc.titleStocking density affects the growth, survival, and cheliped injuries of third instars of narrow-clawed crayfish, Astacus leptodactylus Eschscholtz, 1823 juvenilesen_US
dc.typeArticleen_US

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