Off-season maturation and spawning of Penaeus semisulcatus by eyestalk ablation and/or temperature-photoperiod regimes

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dc.authoridEroldogan, Orhan Tufan/0000-0001-6978-7524
dc.contributor.authorAktas, M
dc.contributor.authorKumlu, M
dc.contributor.authorEroldogan, OT
dc.date.accessioned2024-09-18T20:54:08Z
dc.date.available2024-09-18T20:54:08Z
dc.date.issued2003
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractIn this study, nine different treatments were tested on off-season reproductive performance of Penaeus semisulcatus for 60 days in a recirculating system, in round tanks (1.2-m diameter) situated in a greenhouse. A combination of raised temperature (28 degreesC) and shortened (10 h) or increased day length (14 h) was not sufficient to induce maturation in unablated females of P. semisulcatus. Unablated females showed no sign of ovarian development at a constant low temperature of 20 degreesC. Cyclic fluctuation (period of 10 days) of water temperature (20-28 degreesC) at local winter photoperiod regime (10-h illumination) induced successful maturation and even multiple spawnings within the same moulting period. Natural daylight supplementation (14-h illumination) did not produce any advantage over natural illumination (10 h). Unilateral eyestalk ablation had the most profound effect on the induction of ovarian development and spawning in this species. Even at a temperature of 20 degreesC, eyestalk-ablated females developed their ovaries up to the 4th stage but with still no spawning. It appears that P. semisulcatus requires not only optimal environmental conditions but also a certain stimulus such as ablation or temperature fluctuation for successful maturation and spawning in captivity during the winter season. Small tank size (1.2 m in diameter) did not inversely affect mating success of P semisulcatus at the sex ratio of 1:2 male/female and 10 shrimp/m(2) stocking density. The present results have demonstrated that eyestalk ablation or cyclic temperature fluctuation techniques can successfully be applied to obtain off-season spawning from P. semisulcatus broodstock in the subtropics. (C) 2003 Elsevier Science B.V. All rights reserved.en_US
dc.identifier.doi10.1016/S0044-8486(03)00314-4
dc.identifier.endpage370en_US
dc.identifier.issn0044-8486
dc.identifier.issn1873-5622
dc.identifier.issue1-4en_US
dc.identifier.scopus2-s2.0-0345392845en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage361en_US
dc.identifier.urihttps://doi.org/10.1016/S0044-8486(03)00314-4
dc.identifier.urihttps://hdl.handle.net/20.500.12483/11618
dc.identifier.volume228en_US
dc.identifier.wosWOS:000186851100026en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofAquacultureen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPenaeus semisulcatusen_US
dc.subjectbroodstocken_US
dc.subjectspawningen_US
dc.subjecttemperatureen_US
dc.subjecteyestalk ablationen_US
dc.subjectphotoperioden_US
dc.titleOff-season maturation and spawning of Penaeus semisulcatus by eyestalk ablation and/or temperature-photoperiod regimesen_US
dc.typeArticleen_US

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