Disentangling the environmentally induced and stochastic developmental components of phenotypic variation

Vogt, Günter

doi:10.1016/b978-0-12-817996-3.00010-4

Cited by 15 publications

(19 citation statements)

References 149 publications

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“…Since all individuals of P. virginalis were kept under identical conditions, phenotypic plasticity induced by external environmental factors appears unlikely at first. Thus, a possible explanation for this non-genetic phenotypic variation is stochastic developmental variation as result of stochastic alterations of the epigenome (Vogt 2015(Vogt , 2020. We were able to find congruent phenomena of intraspecific variability in the sexually reproducing crayfish F. limosus.…”

Section: Discussionmentioning

confidence: 60%

Section: Phenotypic Plasticity and Stochastic Developmental Variationmentioning

confidence: 99%

“…Another aspect of non-genetic phenotypic variation is stochastic developmental variation (Vogt 2015(Vogt , 2017(Vogt , 2020Angers et al 2020). Although subject to the same environmental conditions, genetically identical organisms can develop different phenotypes due to stochastic alterations of the epigenome (Leung et al 2016;Atlasi and Stunnenberg 2017;Angers et al 2020;Vogt 2020). Thus, stochastic developmental variation, unlike phenotypic plasticity, is no direct response to specific change of environmental factors but considered a bet-hedging strategy (Simons 2014;Furness et al 2015;Vogt 2015;Leung et al 2016;Angers et al 2020).…”

Section: Phenotypic Plasticity and Stochastic Developmental Variationmentioning

confidence: 99%

“…Environmentally induced phenotypic plasticity and stochastic developmental variation, however, are no mutually exclusive strategies but complementary sources of phenotypic variation (Vogt 2020). While phenotypic plasticity is considered advantageous in habitats with rather predictable environmentally changes, stochastic developmental variation is considered a diversifying bet-hedging strategy suited for less predictable or unpredictable environments (Leung et al 2016).…”

Section: Phenotypic Plasticity and Stochastic Developmental Variationmentioning

confidence: 99%

“…In this kind of parthenogenesis, in which meiosis is suppressed and diploid (or in this case triploid) eggs are produced by mitosis only (Simon et al 2003), all offspring is both genetically identical among themselves and to the mother (Martin et al 2007;Gutekunst et al 2018). Furthermore, P. virginalis has a relatively short generation time (compared to other decapods), features high robustness regarding rearing conditions and thus is well suited for the study of both phenotypic plasticity and stochastic developmental variation (Vogt 2008(Vogt , 2020Vogt et al 2008).…”

Section: The Marbled Crayfish As 'Model Organism' For Phenotypic Variationmentioning

confidence: 99%

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High degree of non-genetic phenotypic variation in the vascular system of crayfish: a discussion of possible causes and implications

et al. 2021

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In this study, the hemolymph vascular system (HVS) in two cambarid crayfishes, i.e. the Marbled Crayfish, Procambarus virginalis Lyko, 2017 and the Spiny Cheek Crayfish, Faxonius limosus (Rafinesque, 1817), is investigated in regard of areas of non-genetic phenotypic variation. Despite their genetic identity, specimens of P. virginalis show variability in certain features of the HVS. Thus, we describe varying branching patterns, sporadic anastomoses, and different symmetry states in the vascular system of the marbled crayfish. We visualize our findings by application of classical and modern morphological methods, e.g. injection of casting resin, micro-computed tomography and scanning electron microscopy. By comparing our findings for P. virginalis to the vasculature in sexually reproducing crayfishes, i.e. F. limosus and Astacus astacus, we discuss phenotypic variation of the HVS in arthropods in general. We conclude that constant features of the HVS are hereditary, whereas varying states identified by study of the clonal P. virginalis must be caused by non-genetic factors and, that congruent variations in sexually reproducing F. limosus and A. astacus are likely also non-genetic phenotypic variations. Both common causal factors for non-genetic phenotypic variation, i.e., phenotypic plasticity and stochastic developmental variation are discussed along our findings regarding the vascular systems. Further aspects, such as the significance of non-genetic phenotypic variation for phylogenetic interpretations are discussed.

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Section: Discussionmentioning

confidence: 60%

Section: Phenotypic Plasticity and Stochastic Developmental Variationmentioning

confidence: 99%

Section: Phenotypic Plasticity and Stochastic Developmental Variationmentioning

confidence: 99%

Section: Phenotypic Plasticity and Stochastic Developmental Variationmentioning

confidence: 99%

Section: The Marbled Crayfish As 'Model Organism' For Phenotypic Variationmentioning

confidence: 99%

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High degree of non-genetic phenotypic variation in the vascular system of crayfish: a discussion of possible causes and implications

et al. 2021

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Epigenetics in Crustaceans

Vogt

2023

Epigenetics in Aquaculture

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Paradigm shifts in animal epigenetics: Research on non‐model species leads to new insights into dependencies, functions and inheritance of DNA methylation

Vogt

2022

BioEssays

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Recent investigations with non-model species and whole-genome approaches have challenged several paradigms in animal epigenetics. They revealed that epigenetic variation in populations is not the mere consequence of genetic variation, but is a semi-independent or independent source of phenotypic variation, depending on mode of reproduction. DNA methylation is not positively correlated with genome size and phylogenetic position as earlier believed, but has evolved differently between and within higher taxa. Epigenetic marks are usually not completely erased in the zygote and germ cells as generalized from mouse, but often persist and can be transgenerationally inherited, making them evolutionarily relevant. Gene body methylation and promoter methylation are similar in vertebrates and invertebrates with well methylated genomes but transposon silencing through methylation is variable. The new data also suggest that animals use epigenetic mechanisms to cope with rapid environmental changes and to adapt to new environments. The main benefiters are asexual populations, invaders, sessile taxa and long-lived species.

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Disentangling the environmentally induced and stochastic developmental components of phenotypic variation

Cited by 15 publications

References 149 publications

High degree of non-genetic phenotypic variation in the vascular system of crayfish: a discussion of possible causes and implications

High degree of non-genetic phenotypic variation in the vascular system of crayfish: a discussion of possible causes and implications

Epigenetics in Crustaceans

Paradigm shifts in animal epigenetics: Research on non‐model species leads to new insights into dependencies, functions and inheritance of DNA methylation

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