Influence of the temperature at the Black Sea ctenophores-aliens bioluminescence characteristics

Mashukova, Olga; Tokarev, Yu. N.

doi:10.4236/abb.2012.33037

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…The distribution of light production among these phases, and temporal dynamics within these phases, was temperature dependent in FSW controls (Fig. 3), which fits with previous reports of a 22 to 26°C optimum for luminescence emission in M. leidyi (Olga & Yuriy 2012). Total integrated luminescence measurements suggest that ctenophores exposed to higher concentrations of test solutions, particularly those containing oil and those at the 23°C exposure temperature, either possessed diminished cellular stores of the mnemiopsin photoprotein after 24 h incubations or experienced alterations in the re-activity of mnemiopsin with oil/dispersant exposure.…”

Section: Discussionsupporting

confidence: 90%

Lethal and sublethal effects of oil, chemical dispersant, and dispersed oil on the ctenophore Mnemiopsis leidyi

Peiffer¹,

Cohen²

2015

Aquat. Biol.

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We established the lethal levels for water-accommodated fractions of Corexit ® 9500A chemical dispersant, crude oil (WAF), and dispersed crude oil (CEWAF) for the ctenophore Mnemiopsis leidyi at both 15 and 23°C. This gelatinous zooplankter was sensitive to dispersant at both temperatures, as well as to oil solutions, with some increase in toxicity of CEWAF as compared to WAF. Subsequent sublethal assays for routine respiration rate, bioluminescence, and glutathiones-transferase (GST) activity were conducted on individuals surviving 24 h exposures to test solutions at both 15 and 23°C. GST activity increased significantly in 2.5 and 5 mg l −1 dispersant solutions at 15°C, suggesting a metabolic detoxification response to the dispersant-containing solutions, but no effect of any solution type on routine respiration rate was observed. Light emission through mechanically stimulated bioluminescence and photocyte lysis decreased with exposure to crude oil WAF and CEWAF at both temperatures and to dispersant exposure at 23°C.Collectively, these results demonstrate that M. leidyi exhibits both lethal and sublethal effects from acute crude oil exposure, with an elevation of some sublethal responses upon addition of chemical dispersant. Sublethal effects of oil and dispersants in pelagic species, most notably impairment of luminescence, should be considered when evaluating oil spill response strategies.

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Section: Discussionsupporting

confidence: 90%

Lethal and sublethal effects of oil, chemical dispersant, and dispersed oil on the ctenophore Mnemiopsis leidyi

Peiffer¹,

Cohen²

2015

Aquat. Biol.

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Bioluminescence in aquatic and terrestrial organisms elicited through various kinds of stimulation

Ramesh

Meyer‐Rochow

2021

Aquat Ecol

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Variability of the bioluminescence characteristics of the Black Sea ctenophores-aliens in connection with different conditions of nutrition

Mashukova¹,

Tokarev²

2013

ABB

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Many ecological-physiological characteristics of ctenophores-aliens Mnemiopsis leidyi A. Agassiz, 1865 and Beroe ovata Mayer, 1912 are studied quite well because they play a very important ecological role in the Black Sea ecosystem. However, bioluminescence, one of the most important elements of the ctenophores ecology and its connection with feeding regime were not studied sufficiently. Experiments have shown that characteristics of the ctenophores bioluminescence differed considerably in dependence of food supplies. Thus, amplitude and light-emitting energy of the fed ctenophores B. ovata are maximal, 3 times more than analogical indices of the just-caught individuals and 4 times more than ones of starving individuals. More prolonged flash signal (to 3.5 s), which exceeds light-emitting duration of the starving individuals twice, can be registered from the fed ctenophores. Investigation of the M. leidyi bioluminescence has shown that amplitude and light-emitting energy of the just-caught ctenophores were two times more than those of the starving individuals. At the same time, light-emitting amplitude of the fed individuals is 6.5 times and light-emitting energy is 3 -4 times higher than that of the just-caught ctenophores. The light-emitting duration of the starving and justcaught organisms is practically the same. The most prolonged signal is registered from the fed ctenophores-up to 2.8 s. The data obtained testify that characteristics of the ctenophores bioluminescence can be conditioned not only by nutritional value but by the composition of the food as well.

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Influence of the temperature at the Black Sea ctenophores-aliens bioluminescence characteristics

Abstract: ABSTRACT

Cited by 5 publications

References 4 publications

Lethal and sublethal effects of oil, chemical dispersant, and dispersed oil on the ctenophore Mnemiopsis leidyi

Lethal and sublethal effects of oil, chemical dispersant, and dispersed oil on the ctenophore Mnemiopsis leidyi

Bioluminescence in aquatic and terrestrial organisms elicited through various kinds of stimulation

Variability of the bioluminescence characteristics of the Black Sea ctenophores-aliens in connection with different conditions of nutrition

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