title: Convergent photoperiodic plasticity in developmental rate in two species of insects with widely different thermal phenotypes
metadata.name: dc.contributor.author
metadata.value: Kutcherov, Dmitry
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Lopatina, Elena Borisovna
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Balashov, Sergei
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2018-11-29T16:55:02Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2018-11-29T16:55:02Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018-11-05
metadata.lang: -
metadata.name: dc.identifier.issn
metadata.value: 1802-8829
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/15067
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Growth and development rates in many insects are affected by photoperiod, which enables insects to synchronize their life histories with seasonal events, but this aspect of insect photoperiodism remains understudied. Here we use several experimental combinations of constant day length and temperature to determine whether there are quantitative developmental responses to photoperiod in the bug Scantius aegyptius and leaf beetle Timarcha tenebricosa. The thermal ecology of these two species is strikingly different: the former is thermophilic and active throughout summer and the latter is spring-active and avoids the hottest time of the year. In accordance with their contrasting natural thermal environments, S. aegyptius survives better and achieves a larger final body mass at the high experimental temperatures, while T. tenebricosa survives better and is heavier at the low experimental temperatures. Despite this polarity, long-day conditions accelerate larval development relative to a short-day photoperiod in both species, and this developmental response is stronger at low temperatures. Our re-visitation of previous literature in light of the new findings indicates that this similarity in photoperiodic response is superficial and that relatively faster development in midsummer is likely to have a different ecological role in summer- and spring-active species. In the former, it may allow completion of an additional generation during the favourable season, whereas in the latter, this acceleration likely ensures that the larval stage, which is vulnerable to heat, is completed before the onset of hot weather.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: Russian Foundation for Basic Research (grant no. 16-34-00534-mol_a and 14-04-01156-a) and Saint Petersburg State University (project no. 1.40.503.2017).
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Hemiptera
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Pyrrhocoridae
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Scantius aegyptius
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Coleoptera
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Chrysomelidae
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Timarcha tenebricosa
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: body size
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: development
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: photoperiod
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: reaction norm
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: seasonality
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: temperature
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Convergent photoperiodic plasticity in developmental rate in two species of insects with widely different thermal phenotypes
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: EJE_eje-201801-0060.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/15067/1/EJE_eje-201801-0060.pdf
resources.format: Adobe PDF
resources.size: 479,17 kB