Coexistence in space and time of sexual and asexual populations of the cereal aphid Sitobion avenae

Dedryver, C. A.; Hullé, M.; Gallic, Jean-François Le; Caillaud, Marina C.; Simon, Jean‐Christophe

doi:10.1007/s004420100674

Cited by 81 publications

(117 citation statements)

References 43 publications

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“…In agreement with this, a high heterozygosity level was observed in Sitobion species that were mainly or functionally asexual Simon et al, 1999;Wilson et al, 1999;Haack et al, 2000). The high level of heterozygosity found in the French population of our study further confirms this pattern since we have previously shown that asexual lineages are prevalent in this region (Dedryver et al, 2001).…”

Section: Validation Of Theoretical Modelssupporting

confidence: 92%

“…However, the response in laboratory to sexinducing conditions of field-collected clones from different regions of Western Europe demonstrates the expected link between the level of investment in sexual reproduction and the local winter climate. Indeed, sexual reproduction dominates in lineages of S. avenae from north of Western Europe (Newton and Dixon, 1988;Dedryver et al, 2001), whereas asexual reproduction dominates in lineages from Southwestern Europe (Pons et al, 1995;Dedryver et al, 2001). However, such indirect evidence may not exactly reflect the actual investment in sexual reproduction in the field.…”

Section: Introductionmentioning

confidence: 99%

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Predominance of sexual reproduction in Romanian populations of the aphid Sitobion avenae inferred from phenotypic and genetic structure

et al. 2003

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Models of coexistence of sexual and asexual lineages in aphids assume that obligate parthenogenetic lineages predominate in areas with mild winter climate because of their high reproductive output, while sexual lineages predominate in areas with severe winter because they produce eggs resistant to frost. To validate this hypothesis in natural conditions, the reproductive mode of populations of the aphid Sitobion avenae was assessed in two very contrasting climatic situations, Romania (severe winter) and Western France (mild winter). To achieve this, reproductive modes were inferred from both (1) the population composition in sexual and asexual forms in autumn, and (2) the genetic structure of Romanian and French populations of S. avenae using microsatellite markers. Romanian populations encompassed a high proportion of sexual forms and were characterised by a very high genotypic diversity and low linkage disequilibrium. In constrast, the French population showed frequent linkage disequilibria, low genetic diversity, and high level of clonal amplification with two asexual genotypes representing over 60% of the sample. In agreement with the model's predictions, these results clearly indicate that sexual reproduction in S. avenae is predominant under the continental climate of Romania, while asexual lineages prevail under the oceanic climate of Western France.

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Section: Validation Of Theoretical Modelssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Predominance of sexual reproduction in Romanian populations of the aphid Sitobion avenae inferred from phenotypic and genetic structure

et al. 2003

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“…The production of eggs by cyclically parthenogenetic aphids may constitute a selective advantage in cold regions where peach trees are available, as eggs are the only forms that can resist frost, whereas it may be more costly in mild regions compared to obligate parthenogenesis. This hypothesis was subsequently formalised (Rispe et al 1998b;Rispe and Pierre, 1998) and has been validated in other aphid species such as the grain aphid, Sitobion avenae (F.) (Dedryver et al, 2001).…”

Section: Introductionmentioning

confidence: 96%

Spatial and temporal genetic variability in French populations of the peach–potato aphid, Myzus persicae

Guillemaud

Mieuzet²,

Simon³

2003

Heredity

110

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The peach-potato aphid, Myzus persicae (Sulzer), has a complex reproductive mode in which some lineages reproduce by continuous parthenogenesis, whereas others reproduce sexually once a year. The climate is thought to act directly on the reproductive mode, because sexual eggs are the only form that can resist frost in cold regions. Sexual reproduction necessitates an obligatory host alternation that may result in long-distance dispersal. Here, we examined the genetic variability at seven microsatellite loci of populations of M. persicae in France, where both reproductive modes occur. We provide clear genetic evidence that the breeding system affects genotypic variability, as cyclically parthenogenetic aphids are far more variable than their obligately parthenogenetic counterparts. A temporal decrease in genetic variability and a temporal genetic differentiation effect suggest the existence of selective factors that play an important role in shaping the genetic structure of M. persicae populations. Lastly, differences in the population structure between reproductive modes suggest that the migration associated with the change of host during sexual reproduction lowers the level of population differentiation.

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“…The distribution of clones differing in their life cycles is probably maintained by powerful selective forces that prevent homogenization of the reproductive modes of different populations. These forces are predominantly ecological, mainly regional differences in winter severity (Dedryver et al., 2001; Duan et al., 2016; Halkett et al., 2004; Rispe & Pierre, 1998; Rispe, Pierre, Simon, & Gouyon, 1998; Simon et al., 1999). According to the model of Rispe et al.…”

Section: Discussionmentioning

confidence: 99%

“…Previous reports showed that holocyclic aphid clones maintained over the long term at a low temperature and short photoperiod could produce sexual generation (Dedryver et al., 2001; Rispe & Pierre, 1998; Rispe et al., 1998; Simon et al., 1999). By contrast, in this study, anholocyclic clones exposed to long‐term inducing conditions could not produce males or oviparae, and the aphid offspring had a shorter adult lifespan, shorter total longevity, and reduced fecundity.…”

Section: Discussionmentioning

confidence: 99%

Responses of holocyclic and anholocyclic Rhopalosiphum padi populations to low‐temperature and short‐photoperiod induction

Peng

Qiao

Chen

2017

Ecology and Evolution

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The different life cycles of aphid species make these organisms good models for studying the short‐term consequences of sex. The bird cherry‐oat aphid Rhopalosiphum padi has a wide geographic distribution and correspondingly different life cycles. In this study, the life cycles of R. padi collected from six different regions in China were characterized experimentally by comparing the responses of holocyclic and anholocyclic populations to low‐temperature and short‐photoperiod induction. Clones collected from Chuzhou, Taian, and Taigu consistently reproduced via obligate parthenogenesis, whereas clones from Hami and Baicheng were holocyclic in their response, and those from Lanzhou were both holocyclic and anholocyclic. Prolonged exposure to low temperature and a short photoperiod (LS) had negative effects on the offspring of anholocyclic aphids with regard to adult lifespan, total longevity, and fecundity compared with aphids maintained at a normal temperature and a long photoperiod (NL). Holocyclic LS R. padi had longer developmental times at all nymph stages, a shorter adult lifespan, shorter total longevity, and a lower fecundity than NL counterparts. The adult prereproduction period of gynoparae was significantly longer than that of virginoparae, and the total longevity of gynoparae was significantly shorter than that of virginoparae. Moreover, the net reproductive and gross reproduction rates, as well as the total fecundity, were roughly fivefold higher in virginoparae than in gynoparae, indicating that there is the short‐term cost of sex. When maintained on their secondary host (Triticum aestivum), gynoparae, males, and oviparae produced by holocyclic populations could survive, and gynoparae produced oviparae. However, under NL conditions, oviparae could not produce overwintering eggs on the secondary host, whereas a few overwintering eggs were generated by oviparae under LS conditions. Taken together, these results illuminate the complexity of insect responses and contribute to a complete understanding of the aphid life cycle and its evolution.

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Coexistence in space and time of sexual and asexual populations of the cereal aphid Sitobion avenae

Cited by 81 publications

References 43 publications

Predominance of sexual reproduction in Romanian populations of the aphid Sitobion avenae inferred from phenotypic and genetic structure

Predominance of sexual reproduction in Romanian populations of the aphid Sitobion avenae inferred from phenotypic and genetic structure

Spatial and temporal genetic variability in French populations of the peach–potato aphid, Myzus persicae

Responses of holocyclic and anholocyclic Rhopalosiphum padi populations to low‐temperature and short‐photoperiod induction

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