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Effect of starvation on the biochemical compositions and respiration rates of ctenophores Mnemiopsis leidyi and Beroe ovata in the Black Sea
Anninsky, B.E.; Finenko, G.A.; Abolmasova, G.I.; Hubareva, E.S.; Svetlichny, L.S.; Bat, L.; Kideys, A.E. (2005). Effect of starvation on the biochemical compositions and respiration rates of ctenophores Mnemiopsis leidyi and Beroe ovata in the Black Sea. J. Mar. Biol. Ass. U.K. 85(3): 549-561
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

Available in Authors 

Keywords
    Beroe ovata Bruguière, 1789 [WoRMS]; Mnemiopsis leidyi A. Agassiz, 1865 [WoRMS]; MED, Black Sea [Marine Regions]; Marine

Authors  Top 
  • Anninsky, B.E.
  • Finenko, G.A.
  • Abolmasova, G.I.
  • Hubareva, E.S.
  • Svetlichny, L.S.
  • Bat, L., more
  • Kideys, A.E., more

Abstract
    Effect of starvation on the biochemical compositions and respiration rates of ctenophores Mnemiopsisleidyi and Beroeovata in the Black Sea


    B.E. Anninsky a1c1, G.A. Finenko a1, G.I. Abolmasova a1, E.S. Hubareva a1, L.S. Svetlichny a1, L. Bat a2 and A.E. Kideys a3
    a1 Institute of Biology of the Southern Seas, National Academy of Sciences of Ukraine, 2 Nakhimov Av., Sevastopol 99011, Ukraine
    a2 University of Ondokuz Mayis, Sinop Fisheries Faculty, Sinop, Turkey
    a3 Institute of Marine Sciences, Middle East Technical University, PO Box 28, TR 33731 Erdemli, Icel Turkey

    Medline query on article authors

    anninsky be
    finenko ga
    abolmasova gi
    hubareva es
    svetlichny ls
    bat l
    kideys ae

    Abstract

    The proximate biochemical composition and metabolic rates of ctenophores Mnemiopsisleidyi and Beroeovata 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 1.14 ±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°C for B.ovata and 8 days at 12.4°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 = R1 Wk (r2=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.


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