Influence of temperature on the 28-point ladybeetle Henosepilachna vigintioctomaculata ontogenesis duration

UDC 635.21:632.76

Matsishina N.V., Ermak M.V., Fisenko P.V., Volkov D.I.

The potato ladybug Henosepilachna vigintioctomaculata causes significant damage to plants of the Solanaceae family in the south of the Far East. Data on its bioecological features are scanty or studied for other regions of its habitat, despite the damage caused by it. The effect of temperature on the duration of ontogenesis stages and offspring mortality, the dependence of population density and nutrition were studied. Observations of the temperature influence on the potato ladybug rearing of were carried out by the daily fixing method. Eggs were placed in Petri dishes and emergence of larvae was recorded daily. The larvae were fed with the Smak variety. Feeding activity was estimated from the eaten area. Eaten area was assessed daily for 20-25 days in quadruple replications. Adults were weighed on scales before feeding, ten days later, and at the end of the experiment. After pre-selection, adults were placed in Petri dishes. A series with isolated placement of females served as a control. Researched by different temperatures are favorable for the development of the potato ladybug at all ontogenesis stages. A course of an embryonic stage the temperature of 21-25 °С is favorable at the fastest a stage was observed, and was 3,0±0,11 - 5,6±0,06 days. For the larval, the optimum temperature was 17-20 °C, at which the percentage of surviving was greatest (77.3±0.21 to 87.6±0.09), but stage duration increased by 3-4 days (19.6±0.06 to 13.6±0.07). For the pupal the most favorable temperature was 21-25 °С, at which the duration of life was 8,6±0,09-14,0±0,09 days, and the survival rate was 55,1±0,11-73,4±0,05%. At 21-25 °C, the transition of ontogenesis from egg to adult was 28.9 ± 0.05 days and was minimal in duration.

Key words: potato ladybug, ontogenesis, temperature

Matsishina N.V., Cand. Sci. (Biol.), senior research fellow of the laboratory of selection and genetic research of field crops. E-mail:

Ermak M.V., junior research fellow of the Laboratory of Selection and Genetic Research of Field Crops. E-mail:

Fisenko P.V., Cand. Sci. (Agr.), leading research fellow, Head of Laboratory of Selection and Genetic Research of Field Crops. E-mail:

Volkov D.I., postgraduate student, Head of Potato and Vegetable Growing Department. E-mail:

FSBSI “Federal Scientific Center of Agricultural Biotechnology of the Far East named after A.K. Chaika”

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For citing: Influence of temperature on the 28-point ladybeetle Henosepilachna vigintioctomaculata ontogenesis duration. N.V. Matsishina, M.V. Ermak, P.V. Fisenko, D.I. Volkov. Potato and vegetables. 2022. No7. Pp. 24-28. (In Russ.).


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