Age and growth of the needlefish, Tylosurus imperialis (Rafinesque, 1810) from the Levantine coast, North-Eastern Mediterranean

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dc.contributor.authorErguden, Deniz
dc.contributor.authorTuran, Cemal
dc.contributor.authorIvanova, Petya Pavlova
dc.contributor.authorDogdu, Servet Ahmet
dc.contributor.authorRaykov, Violin Stoyanov
dc.contributor.authorYankova, Maria
dc.contributor.authorYaglioglu, Deniz
dc.date.accessioned2025-10-11T20:48:55Z
dc.date.available2025-10-11T20:48:55Z
dc.date.issued2025
dc.departmentDüzce Üniversitesien_US
dc.description.abstractThe present study is the first to determine the age and growth parameters of the needlefish Tylosurus imperialis in the Northeastern Mediterranean. A total of 320 specimens of T. imperialis were caught by gill nets from Turkish coasts (Iskenderun Bay) in the Northeastern Mediterranean between October 2020 and September 2021. The maximum age was 5 years for both sexes combined, and the age group 3-4 comprised 77.5 % of the samples. The total length distribution of T. imperialis was 60 to 109 cm, and the weight distribution was 309 to 1985 g. The b value was between 3.20 and 3.31 for females and males, respectively. The parameter b from the length-weight relationship characterizes a positive allometric growth. Growth equations were calculated as W=0.0006xL(3.2026) (R-2= 0.912) for females, W=0.0004xL(3.3163) (R-2= 0.896) for males, and W= 0.0005xL(3.2456) (R-2=0.904) for all specimens. Von Bertalanffy growth parameters were L-infinity= 139.29 cm, K= 0.119 year(-1), t(0)= -1.819 year for females, L-infinity= 138.50 cm, K= 0.113 year(-1), t(0)= -1.834 year for males and L-infinity= 138.33 cm, K= 0.112 year(-1), t(0)= -1.839 year for all specimens. The spawning period of T. imperialis was determined to be between April and August for both sexes. This data will be useful for the fisheries management of needlefish stocks in our study area and elsewhere.en_US
dc.description.sponsorshipScientific & Technological Research Council of Turkey [TUBITAK -121N777]en_US
dc.description.sponsorshipBulgarian Academy of Sciences [BAS-IC-TR/1/2022-2023]en_US
dc.description.sponsorshipAcknowledgments This research was supported by the Scientific & Technological Research Council of Turkey (TUBITAK -121N777) and the Bulgarian Academy of Sciences (BAS-IC-TR/1/2022-2023) .en_US
dc.identifier.endpage42en_US
dc.identifier.issn1584-9074
dc.identifier.issn1842-6441
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-105013987320en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage36en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12684/22150
dc.identifier.volume21en_US
dc.identifier.wosWOS:001513455400006en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherUniv Oradea Publ Houseen_US
dc.relation.ispartofNorth-Western Journal of Zoologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKA_WOS_20250911
dc.subjectneedlefishen_US
dc.subjectgrowth propertiesen_US
dc.subjectIskenderun Bayen_US
dc.subjectEastern Mediterraneanen_US
dc.subjectT & uuml;rkiye .en_US
dc.titleAge and growth of the needlefish, Tylosurus imperialis (Rafinesque, 1810) from the Levantine coast, North-Eastern Mediterraneanen_US
dc.typeArticleen_US

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