Phenotypic Plasticity of the Thermal Reaction Norms for Development in the Multicolored Asian Lady Beetle, Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)

Переведенное название: Фенотипическая пластичность температурных норм развития азиатской божьей коровки Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)

Е. B. Lopatina, S.Ya. Reznik, A.N. Ovchinnikov, A.A. Ovchinnikova, О.S. Bezman-Moseyko, Е. V. Gritsenko

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

17 Загрузки (Pure)

Аннотация

Phenotypic plasticity of insect thermal reaction norms (TRNs) (the lower thermal threshold, coeffi cient of
thermal sensitivity, and sum of degree-days) ensures precise adjustment of the seasonal cycle to local environments
by changing the pattern of temperature-dependence of developmental rate. In diff erent geographic populations
the plasticity of TRNs can be manifested in diff erent ways. We investigated the photoperiodic and diet-induced
plasticity of TRNs, body mass and structural size (hind femur length) of the multicolored Asian ladybird, Harmonia
axyridis, from native (Irkutsk) and invasive (Sochi) laboratory populations. Each population was tested in 16
experimental treatments that represented combinations of 4 temperatures (17, 20, 24, and 28°C), 2 photoperiods (10
and 16 h of light per day), and 2 larval diets (frozen eggs of the grain moth Sitotroga cerealella and larvae and adults
of the green peach aphid Myzus persicae). The lady beetle eggs developed at a temperature of 20°C; fi rst instar larvae
were distributed among experimental treatments. We have demonstrated that under both photoperiodic regimes larval
feeding on a low-quality diet (grain moth eggs) resulted in a disproportional (more strongly manifested at a low
temperature) retardation of preimaginal development of individuals from both populations. The lower temperature
thresholds for preimaginal development were also greater on the inferior diet. When fed on grain moth eggs, larvae
from the Irkutsk population showed weaker temperature-sensitivity of development, whereas in the Sochi population
the slope of the TRN did not diff er between the two diets. In contrast, H. axyridis from Irkutsk showed practically
no photoperiodic plasticity of TRN, whereas those from Sochi were sensitive to photoperiod on both diets. Under
short-day conditions, the lower temperature threshold in the latter population was smaller and temperature-sensitivity
was weaker so that at the temperatures of 17 and 20°C, development under short-day conditions was faster than
that under long-day conditions, whereas at 28°C, on the contrary, it was slightly slower. In both studied populations
the thermal plasticity of adult body mass and hind femur length was manifested in diff erent ways and to varying
degrees, depending on the larval photoperiodic conditions and diet. Adult body mass could decrease or increase
with larval developmental temperature or show no change. Despite being maintained in the laboratory for many
generations, the H. axyridis populations from Sochi and Irkutsk have retained diff erences in physiological responses
to photoperiodic conditions and larval diet.
Переведенное названиеФенотипическая пластичность температурных норм развития азиатской божьей коровки Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)
Язык оригиналаанглийский
Страницы (с-по)727–744
ЖурналEntomological Review
Том100
Номер выпуска6
DOI
СостояниеОпубликовано - 2020

Ключевые слова

  • Harmonia axyridis, Coccinell idae, temperature, photoperiod, diet, developmental rate, body mass, thermal reaction norms, phenotypic plasticity

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