Fecundity and Spawning Strategy of Shortfin Squid Illex coindetii (Oegopsida: Ommastrephidae), In the Eastern Mediterranean

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dc.contributor.authorSalman, Alp
dc.date.accessioned2019-10-27T11:07:13Z
dc.date.available2019-10-27T11:07:13Z
dc.date.issued2017
dc.departmentEge Üniversitesien_US
dc.description.abstractSamples of Illex coindetii were collected with bottom trawl net at 150, 350 and 550 m depths in the Aegean Sea (Eastern Mediterranean). Sampling was carried out monthly from May 2008 to April 2009. A total of 1415 I coindetii individuals (551 males and 688 females and 176 unidentified sex) were collected. The length-weight relationship showed a negative allometry. There was a difference between the sexes in respect to length-weight relationships with females being larger and heavier than males. The smallest mature individual in the Aegean Sea, was observed to be 125 mm ML for females and 117 mm ML for males. The size-at maturity ML50 was calculated separately for males and females, and first maturation was reached at 164.8 mm ML for females and 139.3 mm ML for males. There were two peaks in GSI of females, one in spring and the other in autumn/early winter. Potential fecundities of mature females were between 46500 and 190000 and, there were 3000-7000 ripe eggs in both oviducts. Oocytes size groups distribution in ovary was bimodal at maturing, mature and advanced mature individuals so ovulation pattern was group-synchronous and reproductive strategy was supposed to be intermittent terminal spawning.en_US
dc.description.sponsorshipEBILTEM (Science and Technology Centre of Ege University)Ege University [2008/SUF/004]; Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [108Y102]en_US
dc.description.sponsorshipThis study was financed by the EBILTEM (Science and Technology Centre of Ege University) (Project No: 2008/SUF/004) and Technological Research Council of Turkey (TUBITAK, Project No: 108Y102). I am indebted to thank both referees for their valuable and constructive comments.en_US
dc.identifier.doi10.4194/1303-2712-v17_4_20
dc.identifier.endpage851en_US
dc.identifier.issn1303-2712
dc.identifier.issn1303-2712en_US
dc.identifier.issue4en_US
dc.identifier.startpage843en_US
dc.identifier.urihttps://doi.org/10.4194/1303-2712-v17_4_20
dc.identifier.urihttps://hdl.handle.net/11454/31993
dc.identifier.volume17en_US
dc.identifier.wosWOS:000403575500020en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherCentral Fisheries Research Insten_US
dc.relation.ispartofTurkish Journal of Fisheries and Aquatic Sciencesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectIllex coindetiien_US
dc.subjectCephalopodaen_US
dc.subjectreproductive biologyen_US
dc.subjectEastern Mediterraneanen_US
dc.titleFecundity and Spawning Strategy of Shortfin Squid Illex coindetii (Oegopsida: Ommastrephidae), In the Eastern Mediterraneanen_US
dc.typeArticleen_US

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