Yuri TOKAREV, Olga MASHUKOVA, Elena SİBİRTSOVA

Bioluminescence Characteristics Changeability of Ctenophore Beroe ovata Mayer, 1912 (Beroida) in Ontogenesis

The changes of the biophysical characteristics of light-emission in ontogenesis of ctenophore Beroe ovata Mayer, 1912 - recent introducer to the Black Sea has been researched. It is established, that bioluminescent amplitude of larvae was eight times higher, and energy of light-emission seven times more, than similar parameters of the bioluminescence in eggs of ctenophores. Amplitude and energy of light-emission of quite recently caught ctenophore (in control) were some orders more than similar parameters in ctenophores after spawning. The maximum bioluminescent amplitude values were observed in the group of ctenophores with eggs-laying. It was registered a significant increase of light-emission characteristics of ctenophores with increasing body. Substantiated conclusion, that distinctions in the bioluminescence parameters of ctenophores in ontogenesis can be caused by ontogenetic features of their biochemical structure and quantity involved in bioluminescent reaction photocytes.

Yuri Tokarev1,*, Olga Mashukova1, Elena Sibirtsova1

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