Population structure of Bactrocera dorsalis s.s., B. papayae and B. philippinensis (Diptera: Tephritidae) in southeast Asia: evidence for a single species hypothesis using mitochondrial DNA and wing-shape data

Schutze, Mark K., Krosch, Matthew N., Armstrong, Karen F., Champan, Toni A., Englezou, Anna, Chomic, Anastasija, Cameron, Stephen L., Hailstones, Deborah and Clarke, Anthony R. (2012) Population structure of Bactrocera dorsalis s.s., B. papayae and B. philippinensis (Diptera: Tephritidae) in southeast Asia: evidence for a single species hypothesis using mitochondrial DNA and wing-shape data. BMC Evolutionary Biology, 12 1: 130.1-130.15. doi:10.1186/1471-2148-12-130


Author Schutze, Mark K.
Krosch, Matthew N.
Armstrong, Karen F.
Champan, Toni A.
Englezou, Anna
Chomic, Anastasija
Cameron, Stephen L.
Hailstones, Deborah
Clarke, Anthony R.
Title Population structure of Bactrocera dorsalis s.s., B. papayae and B. philippinensis (Diptera: Tephritidae) in southeast Asia: evidence for a single species hypothesis using mitochondrial DNA and wing-shape data
Formatted title
Population structure of Bactrocera dorsalis s.s.B. papayae and B. philippinensis (Diptera: Tephritidae) in southeast Asia: evidence for a single species hypothesis using mitochondrial DNA and wing-shape data
Journal name BMC Evolutionary Biology   Check publisher's open access policy
ISSN 1471-2148
Publication date 2012
Sub-type Article (original research)
DOI 10.1186/1471-2148-12-130
Open Access Status DOI
Volume 12
Issue 1
Start page 130.1
End page 130.15
Total pages 15
Place of publication London, United Kingdom
Publisher BioMed Central
Collection year 2013
Language eng
Formatted abstract
Background: Bactrocera dorsalis s.s. is a pestiferous tephritid fruit fly distributed from Pakistan to the Pacific, withthe Thai/Malay peninsula its southern limit. Sister pest taxa, B. papayae and B. philippinensis, occur in the southeastAsian archipelago and the Philippines, respectively. The relationship among these species is unclear due to theirhigh molecular and morphological similarity. This study analysed population structure of these three species withina southeast Asian biogeographical context to assess potential dispersal patterns and the validity of their currenttaxonomic status.

Results: Geometric morphometric results generated from 15 landmarks for wings of 169 flies revealed significantdifferences in wing shape between almost all sites following canonical variate analysis. For the combined data setthere was a greater isolation-by-distance (IBD) effect under a non-Euclidean scenario which used geographicaldistances within a biogeographical Sundaland context (r2 = 0.772, P < 0.0001) as compared to a Euclidean scenariofor which direct geographic distances between sample sites was used (r2 = 0.217, P < 0.01). COI sequence data wereobtained for 156 individuals and yielded 83 unique haplotypes with no correlation to current taxonomicdesignations via a minimum spanning network. BEAST analysis provided a root age and location of 540kya innorthern Thailand, with migration of B. dorsalis s.l. into Malaysia 470kya and Sumatra 270kya. Two migration eventsinto the Philippines are inferred. Sequence data revealed a weak but significant IBD effect under the non-Euclideanscenario (r2 = 0.110, P < 0.05), with no historical migration evident between Taiwan and the Philippines. Results areconsistent with those expected at the intra-specific level.

Conclusions: Bactrocera dorsalis s.s., B. papayae and B. philippinensis likely represent one species structured aroundthe South China Sea, having migrated from northern Thailand into the southeast Asian archipelago and across intothe Philippines. No migration is apparent between the Philippines and Taiwan. This information has implications forquarantine, trade and pest management.
Keyword Geometric morphometrics
Cytochrome c oxidase I
South China Sea biogeography
Fruit flies
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Water in the Minerals Industry
Non HERDC
 
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Created: Thu, 07 Nov 2013, 09:55:48 EST by Matthew Krosch on behalf of Centre for Water in the Minerals Industry