Length-based estimates of growth parameters, mortality rates, and recruitment of Astacus leptodactylus (Eschscholtz, 1823) (Decapoda, Astacidae) in unexploited inland waters of the northern Marmara region, European Turkey)

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dc.contributor.authorDeval, Mehmet C.
dc.contributor.authorBoek, Tomris
dc.contributor.authorAtes, Celal
dc.contributor.authorTosunoglu, Zafer
dc.date.accessioned2019-10-27T19:34:03Z
dc.date.available2019-10-27T19:34:03Z
dc.date.issued2007
dc.departmentEge Üniversitesien_US
dc.description.abstractThe growth parameters, mortality rates, and recruitment pattern of Astacus leptodactylus from an unexploited area in inland waters of the northern Marmara region were investigated based on length-frequency data using FISAT software. Specimens were collected during eight scientific samplings carried out between March 2005 and May 2006. The seasonalized Von Bertalanffy growth function was fitted to the length frequency data (n = 2434) with the following parameters: L-infinity = 80.8 mm, K = 0.405 year(-1), C = 1, and WP = 0.90. The study of functional regressions permits us to conclude that the growth of this population is allometric. Natural mortality (M) was estimated at 0.578 year(-1)and total mortality at 0.589 year(-1). The longevity of the crayfish was calculated as t (max) = 7.4 year. The recruitment pattern shows that there is peak recruitment in May and June. We also estimated the potential instantaneous fishing mortality coefficient at F = 1.53-1.63 year(-1), the instantaneous total mortality coefficient at Z = 2.11-2.21 year(-1), and the exploitation rate E = 0.72-0.73, all through the length-converted catch curve procedure using the length-frequency data of the fyke-nets of 32 mm polyamide (PA) mesh size (stretched mesh).en_US
dc.identifier.doi10.1163/156854007781360649
dc.identifier.endpage665en_US
dc.identifier.issn0011-216X
dc.identifier.issn0011-216Xen_US
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage655en_US
dc.identifier.urihttps://doi.org/10.1163/156854007781360649
dc.identifier.urihttps://hdl.handle.net/11454/39569
dc.identifier.volume80en_US
dc.identifier.wosWOS:000248819500002en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherBrill Academic Publishersen_US
dc.relation.ispartofCrustaceanaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleLength-based estimates of growth parameters, mortality rates, and recruitment of Astacus leptodactylus (Eschscholtz, 1823) (Decapoda, Astacidae) in unexploited inland waters of the northern Marmara region, European Turkey)en_US
dc.typeArticleen_US

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