Polyploidy in Insect Evolution

Lokki, Juhani; Saura, Anssi

doi:10.1007/978-1-4613-3069-1_16

Cited by 53 publications

(43 citation statements)

References 46 publications

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“…However, in some specimens electrophoretic spectra are symmetrical, especially in case of esterase-3 (fi g. 1). Furthermore, one O. ligustici specimen has a spectrum Es-3 88/100/112 , which is in agreement with data published earlier (according to them, both studied species are triploid) (Lokki, Saura, 1980;Stenberg et al, 1997). Heterozygous spectra of Mdh in all specimens of both species show clear asymmetry (fi gs 2, 3), which also confi rms the polyploid nature of their genome.…”

Section: Resultssupporting

confidence: 90%

Clonal Diversity of Otiorhynchus ligustici and O. raucus (Coleoptera, Curculionidae) in Central Ukraine

Morozov-Leonov¹,

Nazarenko²

2017

Vestnik Zoologii

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Clonal Diversity of Otiorhynchus ligustici and O. raucus (Coleoptera, Curculionidae) in Central Ukraine. Morozov-Leonov, S. Yu., Nazarenko, V. Yu. -Th e clonal diversity in four weevil populations of two species, Otiorhynchus ligustici (Linnaeus, 1758) and O. raucus (Fabricius, 1777), from vicinity of Kyiv is analyzed. Polyclonality and inter-population diff erentiation in both species is demonstrated. Th e obtained data about two weevil species clonal diversity are compared with those known for European species O. scaber (Linnaeus, 1758).

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Section: Resultssupporting

confidence: 90%

Clonal Diversity of Otiorhynchus ligustici and O. raucus (Coleoptera, Curculionidae) in Central Ukraine

Morozov-Leonov¹,

Nazarenko²

2017

Vestnik Zoologii

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“…Polyploids are frequently said to have broader ecological tolerances than their diploid progenitors (68,71,106,121). Among the explanations for this observation is the idea that increased heterozygosity can provide metabolic flexibility to cope with a broader array of conditions.…”

Section: Geographical Distribution and Ecological Correlatesmentioning

confidence: 99%

“…Perhaps because of this obstacle, successful polyploid establishment appears to be facilitated by selfing, asexuality, and perenniality (12,99,113). For example, polyploidy is more often found among perennial plants (113) and insects (71), probably because having a long life span increases the chances that rare events will occur (e.g. polyploidization following hybridization), and allows for mating between polyploids and their offspring.…”

Section: Introductionmentioning

confidence: 99%

Polyploid Incidence and Evolution

Otto

Whitton²

2000

Annu. Rev. Genet.

2,088

1,922

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Changes in ploidy occurred early in the diversification of some animal and plant lineages and represent an ongoing phenomenon in others. While the prevalence of polyploid lineages indicates that this phenomenon is a common and successful evolutionary transition, whether polyploidization itself has a significant effect on patterns and rates of diversification remains an open question. Here we review evidence for the creative role of polyploidy in evolution. We present new estimates for the incidence of polyploidy in ferns and flowering plants based on a simple model describing transitions between odd and even base chromosome numbers. These new estimates indicate that ploidy changes may represent from 2 to 4% of speciation events in flowering plants and 7% in ferns. Speciation via polyploidy is likely to be one of the more predominant modes of sympatric speciation in plants, owing to its potentially broad-scale effects on gene regulation and developmental processes, effects that can produce immediate shifts in morphology, breeding system, and ecological tolerances. Theoretical models support the potential for increased adaptability in polyploid lineages. The evidence suggests that polyploidization can produce shifts in genetic systems and phenotypes that have the potential to result in increased evolutionary diversification, yet conclusive evidence that polyploidy has changed rates and patterns of diversification remains elusive.

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“…There are three diploid, 39 triploid,17 tetraploid, five pentaploid and two hexaploid parthenogenetic species or races of weevils Lokki and Saura 1980;Takenouchi 1980a).…”

Section: Introductionmentioning

confidence: 99%

Genetic polymorphism and evolution in parthenogenetic animals. XII. Observations on Japanese polyploid curculionidae (coleoptera).

Takenouchi

Suomalainen

Saura

et al. 1983

The Japanese journal of genetics

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Triploid and pentaploid individuals of Scepticus insularis, originating from Honshu and Hokkaido, as well as tetraploid individuals of Callirhopalus bifasciatus and Catapionus gracilicornis have been assayed by starch gel electrophoresis.All weevils were parthenogenetic females.The results indicate that there is variation within a parthenogenetic population and that different degrees of polyploidy appear identical. This indicates that the degrees of polyploidy in parthenogenetic weevils originate at abnormalities in spindle orientation as advocated by Takenouchi.

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Polyploidy in Insect Evolution

Cited by 53 publications

References 46 publications

Clonal Diversity of Otiorhynchus ligustici and O. raucus (Coleoptera, Curculionidae) in Central Ukraine

Clonal Diversity of Otiorhynchus ligustici and O. raucus (Coleoptera, Curculionidae) in Central Ukraine

Polyploid Incidence and Evolution

Genetic polymorphism and evolution in parthenogenetic animals. XII. Observations on Japanese polyploid curculionidae (coleoptera).

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