Diapause/Dormancy

Hodek, Ivo

doi:10.1002/9781118223208.ch6

Cited by 82 publications

(51 citation statements)

References 139 publications

(284 reference statements)

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“…Диапауза -упреждающая реакция, она индуцируется сигнальными факторами среды (важнейшими из них являются температура и длина светового дня) до на-ступления неблагоприятных условий [3,4,10]. Соотношение между фото-периодом (длиной дня), температурой, осадками, наличием корма и другими жизненно важными факторами среды, естественно, зависит от специфики локального климата.…”

Section: Introductionunclassified

“…Наследование различных особенностей фотопериодической реакции было изучено у ряда видов насекомых [4,13]. В семействе Coccinellidae была исследована только Coccinella septempunctata L. [10,15]. С H. axyridis подобные работы не про-водили.…”

Section: Introductionunclassified

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On the photoperiodic induction of diapause in first generation hybrids of Harmonia Axyridis (PALL.) (Coleoptera, Coccinellidae)

Reznik

Овчинников

Овчинникова

et al. 2016

Ecological genetics

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Background. Diapause is an important component of insect life cycle which ensures synchronization of reproduction and development with local seasonal climate. Genetic bases of this synchronization are particularly important for the analysis of biological invasions. Materials and methods. We investigated photoperiodic induction of diapause in hybrids between two populations of Harmonia axyridis (Pallas): autochthonous population from Irkutsk (Siberia) which shows a strong induction of diapause by short days and invasive population from Sochi (the Caucasus) which exhibits very weak photoperiodic induction of diapause. Results. Reciprocal crosses showed that the strong photoperiodic induction of diapause is dominant and the effects of male and female genotypes on progeny phenotype are equal.

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Section: Introductionunclassified

On the photoperiodic induction of diapause in first generation hybrids of Harmonia Axyridis (PALL.) (Coleoptera, Coccinellidae)

Reznik

Овчинников

Овчинникова

et al. 2016

Ecological genetics

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“…The time lapse between the transfer to suitable rearing conditions (temperature, photoperiod, food) and laying their first egg clutch is usually used as an indicator of diapause intensity in insects (Hodek 2012). It usually decreases substantially during the winter.…”

Section: Pre-oviposition Periodmentioning

confidence: 99%

“…Adult diapause is the most common form of diapause in Coleoptera, occurring in about 90 % of beetle species (Danks 1987) including most Coccinellidae (Hodek 2012). Most species select their winter quarters in September or early October.…”

Section: Introductionmentioning

confidence: 99%

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Fecundity and fertility of ladybird beetle Harmonia axyridis after prolonged cold storage

et al. 2013

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Some species of ladybird beetles (Coleoptera: Coccinellidae) mate both before and after overwintering. The purpose of the pre-diapause mating was studied in the alien invasive ladybird Harmonia axyridis (Pallas 1773). Our study demonstrates the persistence of high fecundity (daily oviposition rate of 21 eggs per fertilized female during the first month of reproduction) and fertility (85 % of eggs hatching) of females of H. axyridis after long storage (up to eight months) at low temperature (6°C). The females were not mated after activation in spring and had to rely on the sperm supply maintained from the pre-winter period (58 % of females were fertilized). Unfertilized females also laid eggs but in low numbers (an average of 345 eggs by virgin females during an individual's lifetime, 1,174 eggs by females fertilized before winter) and after a longer pre-oviposition period (2-5 weeks in comparison to 7-8 days for fertilized females). We show that the unfertilised eggs were not trophic eggs. The high sperm survival ability observed questions the need for the high levels of sexual activity generally observed in Coccinellidae. Fertilized females of H. axyridis may found large colonies after dispersal to new areas even without males, which contributes to the striking invasive ability of this species.

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Ladybirds

Omkar¹,

Mishra²

2014

Biological Controls for Preventing Food Deterioration

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Diapause/Dormancy

Cited by 82 publications

References 139 publications

On the photoperiodic induction of diapause in first generation hybrids of Harmonia Axyridis (PALL.) (Coleoptera, Coccinellidae)

On the photoperiodic induction of diapause in first generation hybrids of Harmonia Axyridis (PALL.) (Coleoptera, Coccinellidae)

Fecundity and fertility of ladybird beetle Harmonia axyridis after prolonged cold storage

Ladybirds

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