exploration of genome size diversity in dragonflies and damselflies (Insecta: Odonata)

Like most insect orders, the Odonata (dragonflies and damselflies) remain poorly studied from the perspective of genome size. They exhibit several characteristics that make them desirable targets for analysis in this area, for example a large range in body size, differences in developmental rate, an...

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Bibliographic Details
Published in:Journal of zoology (1987) 2009-07, Vol.278 (3), p.163-173
Main Authors: Ardila-Garcia, A.M, Gregory, T.R
Format: Article
Language:English
Subjects:
body size
C-value
chromosome number
Chromosomes
DNA content
flight
Genetic diversity
Genomics
image analysis
Insecta
Insects
Odonata
Studies
Taxonomy
voltinism
Zoology
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Summary:Like most insect orders, the Odonata (dragonflies and damselflies) remain poorly studied from the perspective of genome size. They exhibit several characteristics that make them desirable targets for analysis in this area, for example a large range in body size, differences in developmental rate, and distinct modes of flight - all of which are related to genome size in at least some animal taxa. The present study provides new genome size estimates and morphometric data for 100 species of odonates, covering about 1/5 of described North American diversity. Significant relationships are reported between genome size and body size (positive in dragonflies, negative in damselflies), and there is also indication that developmental rate and flight are related to genome size in these insects. Genome size is also positively correlated with chromosome number across the order. These findings contribute to an improved understanding of genome size evolution in insects, and raise several interesting questions for future research.
ISSN:0952-8369
1469-7998
DOI:10.1111/j.1469-7998.2009.00557.x