ArticleComparative cytogenetics2013
Meiosis in rare males in parthenogenetic Cacopsylla myrtilli (Wagner, 1947) (Hemiptera, Psyllidae) populations from northern Europe.
Article in Comparative cytogenetics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Article
- True Parthenogenesis and Female-Biased Sex Ratios in Cicadomorpha and Fulgoromorpha (Hemiptera, Auchenorrhyncha).Insects · 2023Review
- Evolutionary Potential of Parthenogenesis-Bisexual Lineages within Triploid Apomictic Thelytoky inInsects · 2022Article
- The Incidence ofInsects · 2021Article
- Chromosome Unipolar Division and Low Expression ofInsects · 2021Article
- Comparative analysis of chromosome numbers and sex chromosome systems in Paraneoptera (Insecta).Comparative cytogenetics · 2021Review
- Description of two new species of the genusComparative cytogenetics · 2019Article
- Characteristics of parthenogenesis inComparative cytogenetics · 2017Article
- Article
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3 authors.
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Abstract
For studying meiosis in males, large samples of Cacopsylla myrtilli (Wagner, 1947) (Hemiptera, Psyllidae) were collected in Norway, Sweden, Finland and northwest Russia. In addition to all-female populations, males were present in 10 out of 47 populations; still, all populations were highly female-biased, the proportion of males varying from 0.1% to 9.1%. These males are thus rare or so-called spanandric males. Males in northern Norway, Finland and northwest Russia showed normal chiasmate meiosis, while complete absence of chiasmata due to asynapsis was found in males collected in Norway and northern Sweden. In asynaptic meiosis, all univalent chromosomes divided during the first meiotic division resulting in incomplete second meiotic division and formation of diploid sperms. Hence, males in these populations are nonfunctional and do not contribute to the genetic constitution of the population, but appear in every generation as reversals from apomictic parthenogenesis and the mode of parthenogenesis is of obligatory type.
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