Effect of starvation on the biochemical compositions and respiration rates of ctenophores Mnemiopsis leidyi and Beroe ovata in the Black Sea

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dc.authoridKIDEYS, AHMET ERKAN/0000-0002-1113-2434
dc.authoridBat, Levent/0000-0002-2289-6691
dc.authoridFinenko, Galina/0000-0003-4696-8730
dc.authoridSvetlichny, Leonid/0000-0001-9224-6371
dc.authoridhubareva, elena/0000-0002-5787-8522
dc.authoridSvetlichny, Leonid/0000-0001-5164-6870
dc.contributor.authorAnninsky, BE
dc.contributor.authorFinenko, FA
dc.contributor.authorAbolmasova, GI
dc.contributor.authorHubareva, ES
dc.contributor.authorSvetlichny, LS
dc.contributor.authorBat, L
dc.contributor.authorKideys, AL
dc.date.accessioned2025-03-23T19:37:38Z
dc.date.available2025-03-23T19:37:38Z
dc.date.issued2005
dc.departmentSinop Üniversitesi
dc.description.abstractThe proximate biochemical composition and metabolic rates of ctenophores Mnemiopsis leidyi and Beroe ovata from the Black Sea were examined with respect to starvation conditions. Although organic matter content in B. ovata was two times higher than that of M. leidyi (2.51 +/- 0.53 and 1.4 +/- 0.17 mg g(-1) of wet weight, respectively), these species did not significantly differ in their biochemical composition. In both species protein formed about 80% of the total organic matter, lipids amounted to about 10%. Carbohydrate and amino acids measured separately made up less than 6.5% of the total organic matter. Under experimental starvation (18 days at 16-18 degrees C for B. ovata and 8 days at 12.4 degrees C for M. leidyi), wet weights of both ctenophore species were reduced by 9.4% and 9.3% d(-1), respectively. The rate of organic matter decrease was nearly two times lower than that of wet weight being on average 5.9% d(-1) in M. leidyi and 5.5% d(-1) in B. ovata. There was no trend in percentage of the four major biochemical categories with starvation time. The glycogen content in polysaccharides reached maximum values in freshly collected ctenophores (76.0 +/- 7.9% in B. ovata, and 86.6% in M. leidyi), but it was reduced substantially (34.4 +/- 2.7% in B. ovata and 18.3-28.8% in M. leidyi) with starvation. Monosaccharide content, expressed as a percentage of total carbohydrate, decreased from 39.9% to 13.5% in B. ovata, and from 45.8% to 14.3-23.2% in M. leidyi. The relationship between respiration rate (R) and wet weight (W) of individuals during the starvation can be expressed by power function R = R-1 W-k (r(2)=0.85-0.94; P<0.001) for both ctenophore species. On average, k values were 0.95 and 0.83 in B. ovata and in M. leidyi, respectively. By the end of the starvation, metabolic rate per unit wet weight decreased by 33% in B. ovata and 46% in M. leidyi. Organic matter utilization was almost totally explained by respiration of ctenophores in the experiments and exceeded metabolic requirements of studied species by 11% and 15%, correspondingly. As compared with Mnemiopsis, Beroe has better tolerance to starvation which explains to some extent the success of the species survival during prolonged periods of food shortage in the Black Sea conditions.
dc.identifier.doi10.1017/S0025315405011471
dc.identifier.endpage561
dc.identifier.issn0025-3154
dc.identifier.issn1469-7769
dc.identifier.issue3
dc.identifier.scopusqualityQ3
dc.identifier.startpage549
dc.identifier.urihttps://doi.org/10.1017/S0025315405011471
dc.identifier.urihttps://hdl.handle.net/11486/5966
dc.identifier.volume85
dc.identifier.wosWOS:000230996200011
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherCambridge Univ Press
dc.relation.ispartofJournal of the Marine Biological Association of the United Kingdom
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectChemical-Composition
dc.subjectGrowth Dynamics
dc.subjectCarbon
dc.subjectInvader
dc.subjectMetabolism
dc.titleEffect of starvation on the biochemical compositions and respiration rates of ctenophores Mnemiopsis leidyi and Beroe ovata in the Black Sea
dc.typeArticle

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