Sensory SystemsSensory SystemsСенсорные системы0235-00923034-5936The Russian Academy of Sciences68772110.31857/S0235009225020032ЗРИТЕЛЬНАЯ СИСТЕМАResearch ArticleChanges in the electroretinogram of compound eyes of the cockroach Periplaneta americana L. upon ocelli shieldingИзменения электроретинограммы сложных глаз таракана Periplaneta americana L. при экранировании оцеллейNovikovaЕ. S.НовиковаЕ. С.
Russian Federation
mzhukovskaya@rambler.ruSkibaB. O.СкибаБ. О.
Russian Federation
mzhukovskaya@rambler.ruPuytoA. А.ПуйтоА. А.
Russian Federation
mzhukovskaya@rambler.ruAstakhovaL. А.АстаховаЛ. А.
Russian Federation
mzhukovskaya@rambler.ruRotovA. Yu.РотовА. Ю.
Russian Federation
mzhukovskaya@rambler.ruZhukovskayaM. I.ЖуковскаяМ. И.
Russian Federation
mzhukovskaya@rambler.ruSechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of SciencesИнститут эволюционной физиологии и биохимии РАНSaint Petersburg State UniversityСанкт-Петербургский Государственный Университет1506202539275871707202517072025Copyright ©; 2025, Russian Academy of SciencesCopyright ©; 2025, Российская академия наук2025Russian Academy of SciencesРоссийская академия наукhttps://journals.eco-vector.com/0235-0092/article/view/687721

The cockroach visual system comprises compound eyes with photoreceptors of two spectral classes and ocelli – simple eyes consisting of green-sensitive photoreceptors. Using the method of non-invasive electroretinogram (ERG) recording from both compound eyes, it was shown that shielding of both ocelli leads to a significant alteration of ERG parameters, namely, an increase in the amplitude of responses to short-wavelength stimuli of saturating intensity and a slowing down of responses to both short-wavelength and long-wavelength light. Ocelli estimating the total light level modulate the functioning of photoreceptors of compound eyes at night, under low-light conditions, by increasing the summation time of light entering the eye to generate a response.

Зрительная система таракана включает сложные глаза с фоторецепторами двух спектральных классов и оцелли – простые глазки, состоящие из зеленочувствительных фоторецепторов. С помощью метода неинвазивной регистрации электроретинограммы (ЭРГ) от обоих сложных глаз показано, что экранирование оцеллей приводит к существенному изменению параметров ЭРГ, а именно к увеличению амплитуды ответов на коротковолновые стимулы насыщающей интенсивности и замедлению ответов как на коротковолновый, так и длинноволновый свет. Оцелли, оценивающие общий уровень освещенности, модулируют работу фоторецепторов сложных глаз ночью, в условиях низкой освещенности, увеличивая время суммации попадающего в глаз света для генерации ответа.

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