Chromosomal Evolution and Phylogenetics in Coleopteran Species
Summary
Beetles (order Coleoptera) exhibit extraordinary chromosomal diversity, from conserved diploid counts to extensive rearrangements that drive speciation and adaptation. Chromosomal evolution in this group is characterised by fusions, fissions, inversions and translocations, often involving sex chromosomes and autosomes. Recurrent phenomena include X-autosome fusions, heterochromatin amplification and loss of the Y chromosome, reflecting dynamic genome architecture. Integrative phylogenetic studies combine cytogenetic karyotyping with molecular markers—such as mitochondrial COI and nuclear loci—to resolve lineage relationships, uncover cryptic taxa and revise classifications. Emerging evidence highlights how ecological pressures, chromosomal reorganisation and genetic divergence synergise to underpin the global success and ecological breadth of beetles. Insights into these mechanisms inform biodiversity assessment, conservation strategies and pest management programmes.
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Chromosomal Evolution and Phylogenetics in Coleopteran Species publication trend
The graph below shows the total number of articles in chromosomal evolution and phylogenetics in coleopteran species across all publications each year (not limited to Nature Index journals).
Technical terms
Karyotype: The number and visual appearance of chromosomes in a cell, including their size, shape and banding pattern.
Heterochromatin: Densely packed chromosomal regions, rich in repetitive DNA, that often regulate gene expression and stabilise chromosome structure.
Robertsonian translocation: A chromosomal rearrangement in which two acrocentric chromosomes fuse at their centromeres to form a single metacentric chromosome.
Phylogenetics: The study of evolutionary relationships among organisms, reconstructed using genetic or morphological data.
Haplotype: A combination of alleles at multiple loci that are transmitted together on the same chromosome segment.
References
- Different behaviour of C-banded peri-centromeric heterochromatin between sex chromosomes and autosomes in Polyphagan beetles. Comparative Cytogenetics (2019).
- DNA vs. Morphology in Delineating Species Boundaries of Endemic Mongolian Eodorcadion Taxa (Coleoptera: Cerambycidae). Diversity (2023).
- Loss of Y chromosome may be a synapomorphy of the tribe Lepturini (Coleoptera: Cerambycidae: Lepturinae). European Journal of Entomology (2018).
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