Multigenerational maternal inhibition of prepupal diapause in two Trichogramma species (Hymenoptera: Trichogrammatidae)

Reznik, S. Ya.; Samartsev, Konstantin

doi:10.1016/j.jinsphys.2015.06.012

Cited by 43 publications

(31 citation statements)

References 38 publications

(104 reference statements)

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“…These mechanisms also seem to be adaptive to avoid responding to short days and producing nondiapause progenies in early spring. However, Reznik and Samartsev (2015) did not distinguish between the number of days and the number of generations. Lees (1960) suggested that the seasonal timer would not result from a cytoplasmic substance which is diluted by cell division until it falls below a critical threshold, because the mechanism of the seasonal timer should resist many dilutions through several generations.…”

Section: Discussionmentioning

confidence: 88%

“…It has been reported that the maternal experience of diapause induced by short days suppresses the response to short days in the progeny generation in Diptera and 13 Hymenoptera (Henrich and Denlinger, 1982;Reznik and Samartsev, 2015;Rockey et al, 1989). In Trichogramma spp.…”

Section: Discussionmentioning

confidence: 99%

“…In Trichogramma spp. parasitoid wasps, the response to short days is suppressed over several generations after termination of a previously experienced diapause (Reznik and Samartsev, 2015). These mechanisms also seem to be adaptive to avoid responding to short days and producing nondiapause progenies in early spring.…”

Section: Discussionmentioning

confidence: 99%

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Transgenerational seasonal timer for suppression of sexual morph production in the pea aphid, Acyrthosiphon pisum

Matsuda

Kanbe

Akimoto

et al. 2017

Journal of Insect Physiology

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Many aphid species switch reproductive modes seasonally, with the sexual generations appearing in autumn. Sexual generations are induced by short days. It has been reported that the appearance of sexual morphs is suppressed by a transgenerational factor (a seasonal timer) over several generations after hatching from overwintered eggs. The present study examined whether the seasonal timer measures the number of days from hatching or the number of generations from hatching using the pea aphid, Acyrthosiphon pisum Harris (Homoptera: Aphididae). Effects of temperature and photoperiod on the seasonal timer were also examined by successive rearing. The ability to produce sexual morphs was strongly suppressed in stem mothers (the foundress generation), and gradually recovered over successive generations produced during a few months. The duration for which the seasonal timer could function depended on the number of days from hatching and temperature, but not on photoperiod or the number of generations from hatching. We thus showed in a single study that the seasonal timer of the pea aphid has all the physiological characteristics shown in separate studies in different aphid species.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

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Transgenerational seasonal timer for suppression of sexual morph production in the pea aphid, Acyrthosiphon pisum

Matsuda

Kanbe

Akimoto

et al. 2017

Journal of Insect Physiology

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“…In some insect species, there is a non-photo/thermo-sensible generation in which it is impossible to induce diapause. Such inhibition is potentially based on an epigenetic counter and would prevent the induction of a maladaptive diapause phenotype in spring where environmental conditions are similar as in fall (Henrich & Denlinger, 1982;Reznik & Samartsev, 2015). Recently, in the parasitoid N. vitripennis, for which diapause is under maternal regulation, Pegoraro et al (2016) demonstrated that females exposed to short photoperiods had a very different genome methylation profile than females exposed to long days, which influenced the diapause of their offspring.…”

Section: Epigenetic Mechanismsmentioning

confidence: 99%

Diapause research in insects: historical review and recent work perspectives

Tougeron

2019

Entomologia Exp Applicata

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All organisms on Earth have evolved biological rhythms to face alternation of periods of favorable and unfavorable environmental conditions, at various temporal scales. Diapause is a state of seasonal dormancy adapted to recurring periods of adverse environmental conditions and triggered by biotic and abiotic factors that precede the arrival of these conditions. Several monographs already review the mechanisms of diapause expression in arthropods, from initiation to termination phases. Rather than adding another review to the literature on this topic, this paper primarily aims to link past concepts on seasonal strategies with new perspective on diapause research in arthropods. By focusing on insects, I examine the legacy of diapause history research in terrestrial arthropods since antiquity but mostly over the past 3 centuries, its contribution to the understanding of insect seasonal ecology, and I explore some of the reasons why it is still relevant to study diapause. I highlight some of the topical issues on which current work focuses to better understand and integrate arthropod diapause with their ecology, especially in the climate change context and for the provision of ecosystem services.

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“…The environments that mothers experience (light, temperature, host and nutrients), together with maternal behaviour (host selection, sexual selection, spawning behaviour and parental care) can affect the phenotypic differences of their offspring (Rossiter, ; Mousseau & Fox, ; Mousseau & Fox, ; Newcombe et al ., ), and this influence is considered a maternal effect. Some parental environmental factors, including temperature, nutrition, photoperiod and population density, could affect offspring phenotypes of insect species (Rossiter, ; Gilchrist & Huey, ; Chen et al ., ; Reznik & Samartsev, ). Mothers' environments can affect the developmental rate, adult survival, longevity, fecundity, and other life‐history traits of offspring in insects (Lindquist, ; Rossiter, ; Hoffmann & Hewa‐Kapuge, ; Krebs & Loeschcke, ; Reinhold, ; Gibbs et al ., ; Ismaeil et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Effects of variable maternal temperature on offspring development and reproduction of Rhopalosiphum padi, a serious global pest of wheat

Peng

Zhao

Guo

et al. 2019

Ecological Entomology

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1. Global warming is occurring at an unprecedented rate. Information about how variable temperature affects insect life‐history traits is still scarce. 2. The current study first evaluated the effects of two variable‐temperature treatments [high‐temperature‐variation (HT) treatments and mild‐temperature‐variation (MT) treatments] on the life‐history traits of a maternal generation (F0) of Rhopalosiphum padi, a serious global pest, using a constant normal‐temperature (NT) treatment as a control. Following this, the life‐history traits of the offspring generation (F1) under the NT, MT and HT scenarios were analysed. 3. The total developmental duration of the aphid F0 generation was significantly shortened by MT treatments, while it was significantly increased by HT treatments. Adult longevity and the fecundity of F0 were significantly decreased by HT treatments compared with those in the MT and NT treatments, whereas no significant difference was found between the latter two treatments. The HT treatments applied to the F0 generation significantly prolonged the total developmental duration of the F1 generation. The offspring adult longevity was not affected by the mothers' temperature experience. The offspring fecundity was significantly increased when the F0 generation experienced MT treatments. The intrinsic rate of increase (rm) was significantly decreased when the F0 generation experienced an HT scenario. However, the MT scenario experienced by the F0 generation did not significantly affect the rm of their offspring. 4. The results will provide new insights into the effects of variable maternal temperature on the individual development and population dynamics of offspring under a global warming scenario.

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Multigenerational maternal inhibition of prepupal diapause in two Trichogramma species (Hymenoptera: Trichogrammatidae)

Cited by 43 publications

References 38 publications

Transgenerational seasonal timer for suppression of sexual morph production in the pea aphid, Acyrthosiphon pisum

Transgenerational seasonal timer for suppression of sexual morph production in the pea aphid, Acyrthosiphon pisum

Diapause research in insects: historical review and recent work perspectives

Effects of variable maternal temperature on offspring development and reproduction of Rhopalosiphum padi, a serious global pest of wheat

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