Infestation Pattern and Population Dynamics of the Tropical Bed Bug, Cimex hemipterus (F.) (Hemiptera: Cimicidae) Based on Novel Microsatellites and mtDNA Markers
The tropical bed bug, Cimex hemipterus (F.), has now emerged as an important public health pest in the tropics. Despite its alarming infestation rate, the information on its population genetics remains scarce. Here, we described the infestation structure and population dynamics of C. hemipterus i...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Association of Professional Apiculturists
2020
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/30791/1/nur%20fatanah.pdf http://ir.unimas.my/id/eprint/30791/ https://www.mdpi.com/journal/insects |
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| Summary: | The tropical bed bug, Cimex hemipterus (F.), has now emerged as an important public health
pest in the tropics. Despite its alarming infestation rate, the information on its population genetics
remains scarce. Here, we described the infestation structure and population dynamics of C. hemipterus
in the tropics, especially Malaysia and Singapore, based on eight novel microsatellites and two
mtDNA markers, including cytochrome c oxidase I (COI) and 16S rRNA genes. Across populations,
microsatellite data revealed high genetic diversity with significant genetic differentiation and restricted
gene flow. Analysis within populations revealed evidence of a recent bottleneck. Nonetheless, elevated
genetic diversity in nearly all populations suggests that the propagule in C. hemipterus populations
were much diverse, distantly related (mean r = 0.373), and not significantly inbred (mean FIS = 0.24)
than that observed in Cimex lectularius from previous studies. We observed seven mtDNA haplotypes
across the 18 populations studied (Hd = 0.593) and several populations displayed more than one
matrilineal descent. The two markers were generally congruent in suggesting a common, genetically
diverse (especially at the nuclear region) source population with possibilities of multiple introductions
for the bed bug populations in the present study.
Keywords: bed bug; Cimex hemipterus; microsatellite; mtDNA; population genetics; infestation dynamics |
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