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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.


Paravertical setulae, distance between the outer and inner vertical setae, the size of the angle at the inner vertical triangle and extent of metallic sheen on parafrontal sclerites. Lucilia sericata (A) and Lucilia cuprina (B).
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Figure 1: Paravertical setulae, distance between the outer and inner vertical setae, the size of the angle at the inner vertical triangle and extent of metallic sheen on parafrontal sclerites. Lucilia sericata (A) and Lucilia cuprina (B).

Mentions: The number of paravertical setulae or occipital bristles (Table 2; Figure 1). This character was relatively consistent and reliable, but it is not easily viewed and scored if the specimens have been kept in ethanol. The hybrid specimens all keyed out as Lucilia cuprina. This character was left out of the DFA analysis due to lack of variation within Lucilia cuprina.


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

Williams KA, Villet MH - Zookeys (2014)

Paravertical setulae, distance between the outer and inner vertical setae, the size of the angle at the inner vertical triangle and extent of metallic sheen on parafrontal sclerites. Lucilia sericata (A) and Lucilia cuprina (B).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

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

Figure 1: Paravertical setulae, distance between the outer and inner vertical setae, the size of the angle at the inner vertical triangle and extent of metallic sheen on parafrontal sclerites. Lucilia sericata (A) and Lucilia cuprina (B).
Mentions: The number of paravertical setulae or occipital bristles (Table 2; Figure 1). This character was relatively consistent and reliable, but it is not easily viewed and scored if the specimens have been kept in ethanol. The hybrid specimens all keyed out as Lucilia cuprina. This character was left out of the DFA analysis due to lack of variation within Lucilia cuprina.

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.