Vulnerability of copepod eggs in salinity and temperature gradients of the Marmara and Black Seas

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dc.authoridhubareva, elena/0000-0002-5787-8522
dc.authoridSvetlichny, Leonid/0000-0001-9224-6371
dc.authoridYilmaz, Izzet Noyan/0000-0003-0260-4708
dc.authoridSvetlichny, Leonid/0000-0001-5164-6870
dc.contributor.authorSvetlichny, Leonid
dc.contributor.authorHubareva, Elena
dc.contributor.authorBelmonte, Genuario
dc.contributor.authorIsinibilir, Melek
dc.contributor.authorUstun, Funda
dc.contributor.authorYilmaz, I. Noyan
dc.contributor.authorToklu-Alicli, Benin
dc.date.accessioned2025-03-23T19:26:31Z
dc.date.available2025-03-23T19:26:31Z
dc.date.issued2010
dc.departmentSinop Üniversitesi
dc.description.abstractMass density, sinking speed and hatching success of eggs in Calanus euxinus, Acartia clausi and A. tonsa have been examined in response to salinity and temperature of the Marmara and Black Seas. Eggs of C. euxinus from the Marmara and Black Sea populations (mean mass density of 1.036 to 1.040 g cm(-3)) laid in brackish (18 to 22 psu) upper layers of the Marmara Sea could sink to high-saline (similar to 38.5 psu) deep layers during embryonic development. Gradual salinity increase from 22 to 38.5 psu in laboratory experiments reduced egg hatching success in C. euxinus from the Marmara Sea from 97 +/- 4 to 47 +/- 11% (means +/- SD) while all eggs of the Black Sea C. euxinus did not hatch. Mean mass density of eggs in A. tonsa and A. clausi amounted to 1.062 and 1.044 g cm(-3), respectively. Eggs of A. tonsa with higher mass density and longer development time than those of A. clausi could descend to high salinity strata in the Marmara Sea, or to a cold intermediate layer in the Black Sea. On the contrary, sinking depth of eggs of A. clausi should not exceed 30 m both in the Black and Marmara Seas, as this increases predator pressure. Hatching success in A. tonsa eggs laid at 18 psu decreased from 77.7 +/- 18.5% at 20 degrees C to 46.7 +/- 21.5% at 7 degrees C, and reduced to 10.2 +/- 4.7% at 7 degrees C and 39 psu. Egg hatching success in A. clausi from the Black Sea did not depend upon temperature, whilst it decreased dramatically from 80 to 90% to 3.3 to 10% after salinity increase from 18 to 38 psu.
dc.description.sponsorshipTurkish Scientific Technical Research Council-National Academy of the Ukraine (TUBITAK-NASU) [104Y208, 107Y001]; NATO [EST NUKR CLG 983036]
dc.description.sponsorshipThe present study was partly supported by Turkish Scientific Technical Research Council-National Academy of the Ukraine (TUBITAK-NASU) joint projects 104Y208 and 107Y001 and a NATO Linkage Grant (EST NUKR CLG 983036).
dc.identifier.doi10.3354/meps08837
dc.identifier.endpage120
dc.identifier.issn0171-8630
dc.identifier.issn1616-1599
dc.identifier.scopus2-s2.0-78650127461
dc.identifier.scopusqualityQ1
dc.identifier.startpage109
dc.identifier.urihttps://doi.org/10.3354/meps08837
dc.identifier.urihttps://hdl.handle.net/11486/4713
dc.identifier.volume419
dc.identifier.wosWOS:000285068400008
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherInter-Research
dc.relation.ispartofMarine Ecology Progress Series
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250323
dc.subjectCalanus euxinus
dc.subjectAcartia clausi
dc.subjectAcartia tonsa
dc.subjectEgg mass density
dc.subjectHatching success
dc.subjectSalinity and temperature tolerance
dc.subjectBlack Sea
dc.subjectMarmara Sea
dc.titleVulnerability of copepod eggs in salinity and temperature gradients of the Marmara and Black Seas
dc.typeArticle

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