scholarly journals Highly variable COI haplotype diversity between three species of invasive pest fruit fly reflects remarkably incongruent demographic histories

2019 ◽  
Author(s):  
Camiel Doorenweerd ◽  
Michael San Jose ◽  
Norman Barr ◽  
Luc Leblanc ◽  
Daniel Rubinoff
Keyword(s):  
Haplotype Diversity ◽  
Fruit Fly ◽  
Coi Gene ◽  
Invasive Pest ◽  
Pest Species ◽  
Invasion Pathways ◽  
Geographic Ranges ◽  
Bactrocera Correcta ◽  
Invasive Pest Species ◽  
Source Populations

AbstractDistance decay principles predict that species with larger geographic ranges would have greater intraspecific genetic diversity than more restricted species. However, invasive pest species may not follow this prediction, with confounding implications for tracking phenomena including original ranges, invasion pathways and source populations. We sequenced an 815 base-pair section of the COI gene for 441 specimens of Bactrocera correcta, 214 B. zonata and 372 Zeugodacus cucurbitae; three invasive pest fruit fly species with overlapping hostplants. For each species, we explored how many individuals would need to be included in a study to sample the majority of their haplotype diversity. We also tested for phylogeographic signal and used demographic estimators as a proxy for invasion potency. We find contrasting patterns of haplotype diversity amongst the species, where B. zonata has the highest diversity but most haplotypes were represented by singletons; B. correcta has ∼7 dominant haplotypes more evenly distributed; Z. cucurbitae has a single dominant haplotype with closely related singletons in a ‘star-shape’ surrounding it. We discuss how these differing patterns relate to their invasion histories. None of the species showed meaningful phylogeographic patterns, possibly due to gene-flow between areas across their distributions, obscuring or eliminating substructuring.

Phylogeography of the invasive Mediterranean fan worm,Sabella spallanzanii(Gmelin, 1791), in Australia and New Zealand

2017 ◽  
Vol 97 (5) ◽  
pp. 985-991 ◽  
Author(s):  
Shane T. Ahyong ◽  
Elena Kupriyanova ◽  
Ingo Burghardt ◽  
Yanan Sun ◽  
Pat A. Hutchings ◽  
...  
Keyword(s):  
New Zealand ◽  
Native Species ◽  
Haplotype Diversity ◽  
Molecular Data ◽  
Invasive Pest ◽  
Pest Species ◽  
Invasion Pathways ◽  
Eastern Australia ◽  
Invasive Pest Species ◽  
The Mediterranean

The Mediterranean fan worm,Sabella spallanzanii(Gmelin, 1791), is a highly invasive pest species introduced to Australia and New Zealand, with the ability to alter marine ecosystems by outcompeting native species for food and space.Sabella spallanzaniihas been established in southern Australia for decades, but was discovered in Botany Bay (NSW, eastern Australia) in 2013. In New Zealand,S. spallanzaniiwas first detected in March 2008. Using cytochrome c oxidase subunit 1 (COI) sequences, we investigate the phylogeography of the Australian and New Zealand populations ofS. spallanzanii, including the possible origins of the recent incursions in both countries. Australian and New ZealandS. spallanzaniishow minimal genetic diversity (0.2% divergence) and were dominated by two main haplotypes suggesting a commonality. Our molecular data are insufficient by themselves to identify fine-scale invasion pathways in antipodeanS. spallanzanii, but the similar, minimal haplotype diversity in combination with well-constrained field survey data suggests that the New Zealand incursion originated from southern Australia, rather than as a new incursion from the Mediterranean Sea. This highlights the importance of ongoing marine biosecurity surveillance and monitoring as well as improvements to biosecurity protocols for international and domestic vessels. The origin of the eastern Australian (Botany Bay) incursion is plausibly derived from either southern Australia or as a ‘return’ from New Zealand, and requires further, more detailed investigation.

Dominance of an invasive fruit fly species, Bactrocera invadens, along an altitudinal transect in Morogoro, Eastern Central Tanzania

2014 ◽  
Vol 104 (3) ◽  
pp. 288-294 ◽  
Author(s):  
K. Geurts ◽  
M.W. Mwatawala ◽  
M. De Meyer
Keyword(s):  
High Altitude ◽  
Altitudinal Gradient ◽  
Fruit Fly ◽  
Invasive Pest ◽  
Broad Host Range ◽  
Pest Species ◽  
Fruit Species ◽  
Invasive Pest Species ◽  
Bactrocera Invadens ◽  
Ceratitis Cosyra

AbstractBactrocera invadens, a fruit fly from Asia, is an invasive pest species across Africa. It appears to continue spreading, not only in latitude but also in altitude. To assess its capacity to infest a large variety of hosts and its competition with other fruit fly species, a study along an altitudinal gradient was conducted. At low altitudes, the high abundance in the field and high infestation of B. invadens in different fruit species make it a serious pest. At high altitudes, colonization has started and B. invadens occurs in low numbers by reproducing successfully in high altitude fruits. Overall the abundance and infestation of B. invadens is influenced by its direct competitor Ceratitis rosa and the presence of its preferred host species. C. rosa is still the dominant species in temperate fruits grown at high altitude. Ceratitis cosyra, however, is negatively affected by B. invadens, this species seems to have shifted hosts to avoid competition. The broad host range and competitive potential of B. invadens increase the risk for further spread not only to higher areas, but also to subtropical regions.

Westward Palaearctic range expansion of Papilio demoleus Linnaeus, 1758 (Lepidoptera: Papilionidae) and its arrival at Mediterranean coastal regions of Turkey and Syria

2020 ◽  
Vol 71 (4) ◽  
pp. 257-272
Author(s):  
Onat Başbay ◽  
Mudar Salimeh ◽  
Eddie John
Keyword(s):  
Eastern Mediterranean ◽  
Economic Importance ◽  
Invasive Pest ◽  
Pest Species ◽  
Coastal Regions ◽  
The North ◽  
North Eastern ◽  
The World ◽  
Invasive Pest Species ◽  
Papilio Demoleus

We review the continuing and extensive spread of Papilio demoleus in south-eastern Turkey and in regions of Turkey and Syria adjacent to the north-eastern Mediterranean. Since the authors documented the arrival of this attractive but potentially destructive papilionid species at coastal areas of Syria in 2019, regular monitoring has confirmed successful overwintering there, as well as in Turkey. As previously indicated, P. demoleus is widely recognized as an invasive pest species in Citrus-growing areas of the world and hence its arrival is of potential economic importance to a region in which citrus is widely grown.

Rapid diagnosis of the economically important fruit fly, Bactrocera correcta (Diptera: Tephritidae) based on a species-specific barcoding cytochrome oxidase I marker

2013 ◽  
Vol 103 (3) ◽  
pp. 363-371 ◽  
Author(s):  
F. Jiang ◽  
Z.H. Li ◽  
Y.L. Deng ◽  
J.J. Wu ◽  
R.S. Liu ◽  
...  
Keyword(s):  
Cytochrome Oxidase ◽  
Fruit Fly ◽  
Cytochrome Oxidase I ◽  
Invasive Pest ◽  
Molecular Technique ◽  
Life Stages ◽  
Specific Primer ◽  
Mtdna Coi ◽  
Bactrocera Correcta ◽  
Species Specific

AbstractThe guava fruit fly, Bactrocera correcta (Bezzi) (Diptera: Tephritidae), is an invasive pest of fruit and vegetable crops that primarily inhabits Southeast Asia and which has the potential to become a major threat within both the Oriental and Australian oceanic regions as well as California and Florida. In light of the threat posed, it is important to develop a rapid, accurate and reliable method to identify B. correcta in quarantine work in order to provide an early warning to prevent its widespread invasion. In the present study, we describe a species-specific polymerase chain reaction assay for the diagnosis of B. correcta using mitochondrial DNA cytochrome oxidase I (mtDNA COI) barcoding genes. A B. correcta-specific primer pair was designed according to variations in the mtDNA COI barcode sequences among 14 fruit fly species. The specificity and sensitivity of the B. correcta-specific primer pair was tested based on the presence or absence of a band in the gel profile. A pair of species-specific B. correcta primers was successfully designed and named BCOR-F/BCOR-R. An ∼280 bp fragment was amplified from specimens belonging to 17 geographical populations and four life stages of B. correcta, while no such diagnostic bands were present in any of the 14 other related fruit fly species examined. Sensitivity test results demonstrated that successful amplification can be obtained with as little as 1 ng μl−1 of template DNA. The species-specific PCR analysis was able to successfully diagnose B. correcta, even in immature life stages, and from adult body parts. This method proved to be a robust single-step molecular technique for the diagnosis of B. correcta with respect to potential plant quarantine.

scholarly journals Emergent and Possible Invasive Pest Species of Weevils in Mexico

2019 ◽  
Vol 102 (3) ◽  
pp. 480
Author(s):  
Robert W. Jones ◽  
Carlos Illescas-Riquelme ◽  
Víctor López-Martínez ◽  
Néstor Bautista-Martínez ◽  
Charles W. O'Brien
Keyword(s):  
Invasive Pest ◽  
Pest Species ◽  
Invasive Pest Species

scholarly journals Uncovering the microbiome of invasive sympatric European brown hares and European rabbits in Australia

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9564
Author(s):  
Somasundhari Shanmuganandam ◽  
Yiheng Hu ◽  
Tanja Strive ◽  
Benjamin Schwessinger ◽  
Robyn N. Hall
Keyword(s):  
Lepus Europaeus ◽  
Invasive Pest ◽  
Pest Species ◽  
Gastrointestinal Microbiota ◽  
European Hare ◽  
Microbiome Composition ◽  
Invasive Pest Species ◽  
European Rabbits ◽  
Sequencing Platforms ◽  
Faecal Microbiome

Background European brown hares (Lepus europaeus) and European rabbits (Oryctolagus cuniculus) are invasive pest species in Australia, with rabbits having a substantially larger environmental impact than hares. As their spatial distribution in Australia partially overlaps, we conducted a comparative microbiome study to determine how the composition of gastrointestinal microbiota varies between these species, since this may indicate species differences in diet, physiology, and other internal and external factors. Methods We analysed the faecal microbiome of nine wild hares and twelve wild rabbits from a sympatric periurban reserve in Canberra, Australia, using a 16S rRNA amplicon-based sequencing approach. Additionally, we compared the concordance between results from Illumina and Nanopore sequencing platforms. Results We identified significantly more variation in faecal microbiome composition between individual rabbits compared to hares, despite both species occupying a similar habitat. The faecal microbiome in both species was dominated by the phyla Firmicutes and Bacteroidetes, typical of many vertebrates. Many phyla, including Actinobacteria, Proteobacteria and Patescibacteria, were shared between rabbits and hares. In contrast, bacteria from phylum Verrucomicrobia were present only in rabbits, while phyla Lentisphaerae and Synergistetes were represented only in hares. We did not identify phylum Spirochaetes in Australian hares; this phylum was previously shown to be present at high relative abundance in European hare faecal samples. These differences in the composition of faecal microbiota may be indicative of less discriminate foraging behaviour in rabbits, which in turn may enable them to adapt quicker to new environments, and may reflect the severe environmental impacts that this species has in Australia.

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