Reproduction of the narrow-clawed crayfish, Pontastacus leptodactylus (Eschscholtz, 1823) (Decapoda: Astacidea: Astacidae), in western Turkey

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dc.contributor.authorBerber, Selcuk
dc.contributor.authorKale, Semih
dc.contributor.authorAcarli, Deniz
dc.contributor.authorDemirci, Aydin
dc.date.accessioned2026-02-03T12:02:21Z
dc.date.available2026-02-03T12:02:21Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractMonthly collections using fyke nets between July 2020 and June 2021 (2,606 females, 3,864 males) in Atikhisar Reservoir, & Ccedil;anakkale, Turkey allowed us to investigate the reproduction of the narrow-clawed crayfish (Pontastacus leptodactylus ). The smallest female with visibly developed and quantifiable oocytes in the ovaries had a carapace length (CL) of 38.46 mm and a weight of 12.44 g among 568 individuals. The smallest male carrying spermatophores measured 25.06 mm in CL and weighed 18.96 g. Oocytes were observed from August to December, with enhanced development and darker colors noted from October to December. Density of female sexual maturity increased from October, reaching its peak in December. The length at first maturity (L50) for females and males was determined as 10.91 cm and 6.75 cm, respectively. Analysis of 493 pleopodal females revealed a mean of 145 fertilized eggs. The mean pleopodal egg weight was 1.47 g and ellipsoidal egg volumes varied 1.25-17.6 mm3. Samples from January 2021 exhibited the highest average egg number (190), whereas those from April 2021 had the largest mean egg size. Our results support the legal regulation of a minimum catch length of 10 cm for female crayfish in Turkey. Our research is the first comprehensive exploration of the reproductive characteristics of male and female narrow-clawed crayfish in Atikhisar Reservoir, providing valuable insights for decision-makers and fisheries managers to ensure stock sustainability. The findings furnish valuable insights for optimizing crayfish broodstock management within aquaculture systems.
dc.description.sponsorshipanakkale Onsekiz Mart University the Scientific Research Coordination [FBA-2020-3250]
dc.description.sponsorshipThis study was financially supported by Canakkale Onsekiz Mart University the Scientific Research Coordination Unit (Project FBA-2020-3250).
dc.identifier.doi10.1093/jcbiol/ruaf064
dc.identifier.issn0278-0372
dc.identifier.issn1937-240X
dc.identifier.issue4
dc.identifier.scopus2-s2.0-105022503615
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.1093/jcbiol/ruaf064
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34706
dc.identifier.volume45
dc.identifier.wosWOS:001617820300001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherOxford Univ Press
dc.relation.ispartofJournal of Crustacean Biology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectCrustacea
dc.subjectfecundity
dc.subjectmaturity
dc.titleReproduction of the narrow-clawed crayfish, Pontastacus leptodactylus (Eschscholtz, 1823) (Decapoda: Astacidea: Astacidae), in western Turkey
dc.typeArticle

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