Trophic induction of diapause in native and invasive populations of Harmonia axyridis (Coleoptera: Coccinellidae)

Овчинникова, А. А.; Овчинников, А. Н.; Dolgovskaya, M. Yu.; Reznik, S. Ya.; Belyakova, N. A.

doi:10.14411/eje.2016.061

Cited by 30 publications

(2 citation statements)

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“…Both nutritional and (supposedly) signal effects of the daily feeding rate were also shown for H. axyridis [18,88], A. cardoni [70], A. tetraspilota, H. variegata [71], and Propylea japonica (Thunberg) [39], although the authors of the last study suggested that the delayed maturation can be explained by that diet-restricted females needed a longer period to accumulate nutrients. For H. axyridis even the threshold of the response was determined: females kept with three aphids laid eggs whereas those kept with two aphids did not mature [69]; similar results were later obtained by Ovchinnikova et al [72]. In H. sedecimnotata this threshold is also about two aphids/day although some females matured even when provided with one aphid daily [15].…”

Section: Discussionsupporting

confidence: 52%

“…Various trophic effects on the reproductive activity of predatory coccinellids have been intensively investigated [6][7][8]23]. However, in relatively few studies the effects of the quantity of a diet component on maturation (pre-oviposition period) and fecundity of ovipositing females were separated and the patterns of these two trophic responses were compared [15,18,39,[69][70][71][72]. Thus, the fundamental aim of our study was to determine and compare the patterns of signal and nutritional effects of the addition of various quantities of high-quality prey to low-quality food-based diets.…”

Section: Introductionmentioning

confidence: 99%

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Signal and Nutritional Effects of Mixed Diets on Reproduction of a Predatory Ladybird, Cheilomenes propinqua

Овчинников

Овчинникова

Reznik

et al. 2023

Insects

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It is known that food has a double impact on females of predatory ladybirds: qualitative signal effect (the onset of oogenesis) and quantitative nutritional effect (the increase in oogenesis intensity). We compared the patterns of these effects by feeding Cheilomenes propinqua females on mixed diets: unlimited low-quality prey (eggs of the grain moth Sitotroga cerealella) and limited high-quality prey (the green peach aphid Myzus persicae: 0, 2, 10, and 50 aphids per day). About half of the females fed only on the grain moth eggs oviposited and their fecundity was very low. Daily consumption of 2 aphids increased the proportion of egg-laying females whereas only consumption of 10 aphids increased their mean fecundity. Thus, the threshold of the signal effect was lower than that of the nutritional effect. As applied to mass rearing, we conclude that the addition of high-quality prey to low-quality food causes a substantial increase in egg production, although the economic feasibility of this method is not clear. Regarding biological control of pests by preventing colonization, we conclude that the fecundity of C. propinqua females supplied with the grain moth eggs in the absence of aphids will be low but the appearance of pests will cause a proportional increase in the mean fecundity of ladybirds.

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Section: Discussionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Signal and Nutritional Effects of Mixed Diets on Reproduction of a Predatory Ladybird, Cheilomenes propinqua

Овчинников

Овчинникова

Reznik

et al. 2023

Insects

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Life cycle of Harmonia axyridis in central Europe

et al. 2017

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Article (refereed) -postprint Honek, A.; Martinkova, Z.; Dixon, A.F.G.; Skuhrovec, J.; Roy, H.E.; Brabec, M.; Pekar, S. 2018. Life cycle of Harmonia axyridis in central Europe. BioControl, 63 (2). The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. Abstract 4 The development and reproduction, and maximum number of generations across seasons were 5 ascertained for populations of Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) in 6 Central Europe. Number of generations was calculated using the thermal characteristics of 7 development and summation of daily average air temperatures, in 2007-2016. This species 8 can produce 2-3 generations per year, however, there is insufficient time for it to achieve its 9 full reproductive potential. Delayed emigration from hibernacula (late April) shortened the 10 period of seasonal activity by 1-6%. Breeding occurred from May to mid September. 11 Oviposition continued into late summer, which left insufficient time for the late-hatching 12 immatures to complete their development before the onset of winter. A high mobility, 13 opportunistic use of prey patches and weak tendency to enter dormancy provide the potential 14 for population increase by extending the period of development of immatures at the risk of 15 failure if the cold period comes early. 16 17

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Restricted diet prevents the induction of diapause in Trichogramma larvae

Reznik

Войнович

2023

Biological Control

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Trophic induction of diapause in native and invasive populations of Harmonia axyridis (Coleoptera: Coccinellidae)

Cited by 30 publications

References 54 publications

Signal and Nutritional Effects of Mixed Diets on Reproduction of a Predatory Ladybird, Cheilomenes propinqua

Signal and Nutritional Effects of Mixed Diets on Reproduction of a Predatory Ladybird, Cheilomenes propinqua

Life cycle of Harmonia axyridis in central Europe

Restricted diet prevents the induction of diapause in Trichogramma larvae

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