Nutritional condition of female Calanus euxinus from cyclonic and anticyclonic regions of the Black Sea

Download

index.pdf

Date

1999-01-01

Author

Yuneva, TV
Svetlichny, LS
Yunev, OA
Romanova, ZA
Kıdeyş, Ahmet Erkan
Bingel, F
Uysal, Zahit
Yilmaz, A
Shulman, GE

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

145
views

0
downloads

The content and composition of lipids in Calanus euxinus females were studied in cyclonic and anticyclonic regions in the southern Black Sea during the period of persistent density stratification (September 1996). The lipid content of C, euxinus from cyclonic regions was greater than of individuals from anticyclonic regions (average 101.9 and 58.8 mu g ind.(-1), respectively). Total Lipid content (mainly wax esters, 70 to 72%, and triacylglycerols, 8 to 13%) of female C. euxinus was correlated with chlorophyll a (chl a) (mean integrated concentration) (r = 0.92, p < 0.005). The high correlation with chi a was shown also for wax ester content. used as a long-term index of food supply (r = 0.89, p < 0.05). The correlation between triacylglycerol content (a short-term index) and chi a was not significant (r = 0.66, p < 0.2). In cyclonic regions the mean integrated chi a concentration (0.38 mg m(-3)) (as an indicator of phytoplankton food biomass) was 1.7-fold higher than in anticyclonic areas. The same trend occurred for mean integrated concentrations of nitrate and phosphate (0.996 and 0.299 mu M in cyclonic and 0.438 and 0.061 mu M in anticyclonic regions. respectively) in the chi a containing layer. Thus, conditions for total primary productivity in cyclonic regions were more favorable than in anticyclonic ones. This was consistent with lipid levels in female C, euxinus.

Subject Keywords

Calanus euxinus, Black Sea, Food supply, Lipids, Wax esters, Triacylglycerols, Chlorophyll, Cyclonic regions, Anticyclonic regions

URI

https://hdl.handle.net/11511/30022

Journal

MARINE ECOLOGY PROGRESS SERIES

DOI

https://doi.org/10.3354/meps189195

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Zooplankton of the Black Sea and the Eastern Mediterranean Similarities and dissimilarities Kovalev, Av; Mazzocchı, Mg; Sıokoufrangou, I.; Kıdeyş, Ahmet Erkan (2001-01-01) A synthesis of data on abundance and biomass of zooplankton in the Eastern Mediterranean (EMED) and the Black Sea shows major differences in the composition and structure of pelagic communities in the two basins. Few Mediterranean planktonic animals have invaded in the Black Sea. The great bulk of Black Sea species is represented by coastal inhabitants that spread throughout the whole basin. This process has been called “neritization” of the Black Sea fauna. Peculiarities in zooplankton assemblages of the B...
Phytoplankton distribution in the western and eastern Black Sea in spring and autumn 1995 Eker, E; Georgieva, L; Senichkina, L; Kıdeyş, Ahmet Erkan (1999-12-01) Species composition, abundance, and biomass of micro- (>15 mu m) and nano(<15 mu m) phytoplankton were studied in the western and eastern Black Sea during March-April and October 1995. A total of 142 species were identified, of which >50% were dinoflagellates. Abundance and biomass values were lower during the March-April period (average 129 +/- 28 thousand cells I(-1) and 330 +/- 124 mu g I(-1)) than during the October period (average 364 +/- 161 thousand cells I(-1) and 1794 +/- 515 mu g I(-1)) and compar...
In situ grazing pressure and diet vertical migration of female Calanus euxinus in the Black Sea Besiktepe, S; Kıdeyş, Ahmet Erkan; Unsal, M (1998-01-01) Gut pigment and abundance of the female Calanus euxinus (Hulsemann) were measured from several water layers (defined by density values), with 3-5 h intervals during 30 h and 21 h at a station in the southwestern Black Sea in April and in September 1995, respectively. The female C. euxinus was observed to begin migration to the upper phytoplankton-rich layer approximately 3 or 4 hours before the sunset. Only a fraction of the female Calanus population (0.2% in April and 3.6% in September) did not migrate but...
Estimation of phytoplankton biomass using HPLC pigment analysis in the southwestern Black Sea Ediger, D.; Soydemir, N.; Kıdeyş, Ahmet Erkan (2006-01-01) The phytoplankton population of the southwestern Black Sea in May 2001 was studied by taxonomic analysis using microscopic examination and by pigment analyses using high-performance liquid chromatography (HPLC). Pigment data, which identified phytoplankton assemblages dominated by dinoflagellates, diatoms and coccolithophores in May 2001, were compared to phytoplankton cell counts and biomass. There were significant (p < 0.002-0.01, r=0.56-0.67) relationships between the taxon-specific pigment concentration...
Seasonality of zooplankton in the Southern Black Sea and genetics of Calanus Euxinus (Copepoda) Ünal, Ebru; Kıdeyş, Ahmet; Graduate School of Marine Sciences (2002) Seasonality and composition of zooplankton was comparatively studied at two stations (inshore and offshore) off Sinop, in southern Black Sea in 1999. Intra-specific genetic differentiation of the copepod Calanus euxinus dwelling in different layers along the water column was also investigated in samples obtained from different regions of the southern Black Sea in September 2000. A total of 64 zooplankton species were identified in the Sinop region in 1999, most of which being meroplankton. Out of these, 17 ...

Citation Formats

T. Yuneva et al., “Nutritional condition of female Calanus euxinus from cyclonic and anticyclonic regions of the Black Sea,” MARINE ECOLOGY PROGRESS SERIES, pp. 195–204, 1999, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30022.