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Morphological identification of Lucilia sericata, Lucilia cuprina and their hybrids (Diptera, Calliphoridae).

Williams KA, Villet MH - Zookeys (2014)

Bottom Line: Discriminant function analysis of the characters successfully separated the specimens into three unambiguous groups - L. sericata, L. cuprina and hybrids.This is the first evidence that hybrids of these two species can be identified from their morphology.The usefulness of the morphological characters is also discussed and photographs of several characters are included to facilitate their assessment.

View Article: PubMed Central - HTML - PubMed

Affiliation: Entomology Department, Durban Natural Science Museum, Durban, South Africa.

ABSTRACT
Hybrids of Lucilia sericata and Lucilia cuprina have been shown to exist in previous studies using molecular methods, but no study has shown explicitly that these hybrids can be identified morphologically. Published morphological characters used to identify L. sericata and L. cuprina were reviewed, and then scored and tested using specimens of both species and known hybrids. Ordination by multi-dimensional scaling indicated that the species were separable, and that hybrids resembled L. cuprina, whatever their origin. Discriminant function analysis of the characters successfully separated the specimens into three unambiguous groups - L. sericata, L. cuprina and hybrids. The hybrids were morphologically similar irrespective of whether they were from an ancient introgressed lineage or more modern. This is the first evidence that hybrids of these two species can be identified from their morphology. The usefulness of the morphological characters is also discussed and photographs of several characters are included to facilitate their assessment.

No MeSH data available.


Non-metric Multi-Dimensional Scaling plot using a Manhattan distance metric using 11 characters. Light blue solid circles = Lucilia sericata, Green open circles = Lucilia cuprina, dark blue squares = introgressed hybrids, purple triangles = modern hybrids.
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Figure 6: Non-metric Multi-Dimensional Scaling plot using a Manhattan distance metric using 11 characters. Light blue solid circles = Lucilia sericata, Green open circles = Lucilia cuprina, dark blue squares = introgressed hybrids, purple triangles = modern hybrids.

Mentions: Superficially, the hybrid specimens were identified as Lucilia cuprina when keyed out using any of the published keys. There were no obvious differences in the morphology of the hybrids. When the characters were analysed using MDS, the hybrid specimens were not separated from the Lucilia cuprina specimens (Figure 6).


Morphological identification of Lucilia sericata, Lucilia cuprina and their hybrids (Diptera, Calliphoridae).

Williams KA, Villet MH - Zookeys (2014)

Non-metric Multi-Dimensional Scaling plot using a Manhattan distance metric using 11 characters. Light blue solid circles = Lucilia sericata, Green open circles = Lucilia cuprina, dark blue squares = introgressed hybrids, purple triangles = modern hybrids.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4109482&req=5

Figure 6: Non-metric Multi-Dimensional Scaling plot using a Manhattan distance metric using 11 characters. Light blue solid circles = Lucilia sericata, Green open circles = Lucilia cuprina, dark blue squares = introgressed hybrids, purple triangles = modern hybrids.
Mentions: Superficially, the hybrid specimens were identified as Lucilia cuprina when keyed out using any of the published keys. There were no obvious differences in the morphology of the hybrids. When the characters were analysed using MDS, the hybrid specimens were not separated from the Lucilia cuprina specimens (Figure 6).

Bottom Line: Discriminant function analysis of the characters successfully separated the specimens into three unambiguous groups - L. sericata, L. cuprina and hybrids.This is the first evidence that hybrids of these two species can be identified from their morphology.The usefulness of the morphological characters is also discussed and photographs of several characters are included to facilitate their assessment.

View Article: PubMed Central - HTML - PubMed

Affiliation: Entomology Department, Durban Natural Science Museum, Durban, South Africa.

ABSTRACT
Hybrids of Lucilia sericata and Lucilia cuprina have been shown to exist in previous studies using molecular methods, but no study has shown explicitly that these hybrids can be identified morphologically. Published morphological characters used to identify L. sericata and L. cuprina were reviewed, and then scored and tested using specimens of both species and known hybrids. Ordination by multi-dimensional scaling indicated that the species were separable, and that hybrids resembled L. cuprina, whatever their origin. Discriminant function analysis of the characters successfully separated the specimens into three unambiguous groups - L. sericata, L. cuprina and hybrids. The hybrids were morphologically similar irrespective of whether they were from an ancient introgressed lineage or more modern. This is the first evidence that hybrids of these two species can be identified from their morphology. The usefulness of the morphological characters is also discussed and photographs of several characters are included to facilitate their assessment.

No MeSH data available.