Abstract The coconut mite, Aceria guerreronis Keifer (Prostigmata: Eriophyidae), is a major pest in several coconut production areas worldwide. Information on region of origin and sources of recent introductions of this mite are important aspects to guide evaluation of biological control agents and adoption of quarantine measures. Studies on the geographic pattern of morphological variation among populations of the coconut mite from different countries and continents can provide some of the biogeographic information required. Geometric morphometric analyses allow us to quantify and visualize shape variation, eliminating the effect of size, position and orientation, within and among samples of organisms. The objective of this study was to investigate the morphological variation of the prodorsal shield, coxigenital and ventral regions of the A. guerreronis idiosoma throughout its distribution in America, Africa and Asia, using Relative Warp Analysis (thin-plate splines function) and to attempt to relate this variation to the area of geographic origin from among the studied populations. Variation in the configurations of prodorsal shield, coxigenital and ventral regions were observed. For the last two body regions, this variation was related to the origin of populations. Considerable morphometric variability was observed between American populations, which in turn were distinct from the African and Asian populations. The latter were morphologically similar. These results support previous indications that A. guerreronis is of American origin and that it was introduced to Asia from Africa, or from the same source as that of the African populations. Some considerations on the use of the geometric morphometric analyses in taxonomic studies of eriophyoid mites are presented.
Geographic variation in the coconut mite, Aceria guerreronis Keifer (Acari: Eriophyidae): a geometric morphometric analysis
D. Navia,G. D. de Moraes,R. Querino
Published 2006 in International Journal of Acarology
ABSTRACT
PUBLICATION RECORD
- Publication year
2006
- Venue
International Journal of Acarology
- Publication date
2006-09-01
- Fields of study
Biology, Geography, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- aceria guerreronis
The coconut mite species analyzed for geographic variation in body-shape traits.
Aliases: coconut mite, Aceria guerreronis Keifer
- african populations
Populations of the coconut mite sampled from African locations in the comparative dataset.
Aliases: African mite populations
- american origin
The inferred source region for Aceria guerreronis based on the observed morphometric pattern.
Aliases: origin in America
- american populations
Populations of the coconut mite sampled from sites in the Americas for comparison with African and Asian groups.
Aliases: American mite populations
- asian introduction
The inferred introduction event placing the mite into Asia from another geographic source.
Aliases: introduction to Asia
- asian populations
Populations of the coconut mite sampled from Asian locations in the comparative dataset.
Aliases: Asian mite populations
- coxigenital region
The body region around the coxae and genital opening used for morphometric comparison among populations.
Aliases: coxigenital
- geographic origin
The source area of a population used here to relate morphological variation to biogeography.
Aliases: origin of populations
- geometric morphometric analysis
A shape-quantification approach used here to compare mite body-region morphology while removing effects of size, position, and orientation.
Aliases: geometric morphometrics
- morphometric variability
Differences in measured shape configuration among mite populations.
Aliases: shape variability
- prodorsal shield
The dorsal anterior shield region of the mite idiosoma analyzed as one of the shape landmarks in this study.
Aliases: prodorsal shield region
- relative warp analysis
A thin-plate-spline based shape-analysis procedure applied to visualize and quantify configuration differences among samples.
Aliases: thin-plate splines function
- sampled populations
The mite populations collected from multiple countries and continents for comparative morphometric analysis.
Aliases: studied populations
- ventral region
The underside region of the mite idiosoma examined for geographic variation in shape.
Aliases: ventral body region
REFERENCES
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