Chromosomes of Eupristina verticillata Waterston, 1921 and an overview of known karyotypes of chalcid wasps of the family Agaonidae (Hymenoptera)

Gokhman, Vladimir E.; Nugnes, Francesco; Bernardo, Umberto

doi:10.3897/jhr.71.35951

JHR

2019

DOI: 10.3897/jhr.71.35951

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Chromosomes of Eupristina verticillata Waterston, 1921 and an overview of known karyotypes of chalcid wasps of the family Agaonidae (Hymenoptera)

Vladimir E. Gokhman¹,

Francesco Nugnes²,

Umberto Bernardo³

Abstract: The karyotype of Eupristina verticillata Waterston, 1921 (Agaonidae) from Italy was studied for the first time using chromosome morphometrics. The present study showed that this species has n = 6 and 2n = 12, with five larger metacentrics and a smaller acrocentric chromosome in the haploid set. A brief overview of known karyotypes of chalcid wasps of the Agaonidae is given; certain features of karyotype evolution of this family are discussed.

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Cited by 2 publications

References 8 publications

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Chromosomal diversity in Crematogaster Lund, 1831 (Formicidae: Myrmicinae) from the Amazon rainforest

Silveira,

Teixeira,

Barros

et al. 2024

Genome

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Crematogaster Lund, 1831 is a speciose ant genus globally distributed and easily recognizable. Although biogeographical theories explain some variation among Neotropical Crematogaster, several taxonomical issues remain unresolved. While cytogenetic approaches can help to delimit species, cytogenetic data are only available for 18 taxa. In this study, classical and molecular cytogenetic analyses were performed on five Crematogaster species from the Brazilian Amazon to identify species-specific patterns. Two different cytotypes, both with 2 n = 22 chromosomes were observed in Crematogaster erecta Mayr, 1866, suggesting the presence of cryptic species, although with different karyotypic formulas. Crematogaster aff. erecta had 2 n = 28, while Crematogaster limata Smith, 1858, Crematogaster tenuicula Forel, 1904, and Crematogaster sp. had 2 n = 38. The telomeric motif (TTAGG) n was found in all five species, and the (TCAGG) n motif was detected in the telomeres of C. limata. This peculiar motif was also detected in the centromeric regions of C. erecta cytotype I. The microsatellite (GA) n was dispersed in the chromosomes of all species studied, which also had a single intrachromosomal rDNA site. The cytogenetic results revealed notable interspecific and intraspecific variation, which suggests different chromosomal rearrangements involved in the origin of these variations, also highlighting the taxonomic value of cytogenetic data on Crematogaster.

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Chromosomal diversity in Crematogaster Lund, 1831 (Formicidae: Myrmicinae) from the Amazon rainforest

Silveira,

Teixeira,

Barros

et al. 2024

Genome

View full text Add to dashboard Cite

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Chromosomes of parasitic wasps of the superfamily Chalcidoidea (Hymenoptera): An overview

Gokhman¹

2020

CCG

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An overview of the current knowledge of chromosome sets of the parasitoid superfamily Chalcidoidea is given. Karyotypes of approximately 240 members of this group, i.e. just above one percent of described species, are studied up to now. Techniques for obtaining and analyzing preparations of chalcid chromosomes are outlined, including the so-called “traditional” and “modern” methods of differential staining as well as fluorescence in situ hybridization (FISH). Among the Chalcidoidea, the haploid chromosome number can vary from n = 3 to n = 11, with a clear mode at n = 6 and a second local maximum at n = 10. In this group, most chromosomes are either metacentric or submetacentric, but acrocentrics and/or subtelocentrics also can predominate, especially within karyotypes of certain Chalcidoidea with higher chromosome numbers. The following main types of chromosomal mutations are characteristic of chalcid karyotypes: inversions, fusions, translocations, polyploidy, aneuploidy and B chromosome variation. Although karyotype evolution of this superfamily was mainly studied using phylogenetic reconstructions based on morphological and/or molecular characters, chromosomal synapomorphies of certain groups were also revealed. Taxonomic implications of karyotypic features of the Chalcidoidea are apparently the most important at the species level, especially among cryptic taxa.

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Chromosomes of Eupristina verticillata Waterston, 1921 and an overview of known karyotypes of chalcid wasps of the family Agaonidae (Hymenoptera)

Cited by 2 publications

References 8 publications

Chromosomal diversity in Crematogaster Lund, 1831 (Formicidae: Myrmicinae) from the Amazon rainforest

Chromosomal diversity in Crematogaster Lund, 1831 (Formicidae: Myrmicinae) from the Amazon rainforest

Chromosomes of parasitic wasps of the superfamily Chalcidoidea (Hymenoptera): An overview

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