Survey of Phortica drosophilid flies within and outside of a recently identified transmission area of the eye worm Thelazia callipaeda in Switzerland
Open accessAbstract
Phortica drosophilid flies are the intermediate hosts and vectors of the eye worm Thelazia callipaeda. This nematode originates from Asia and was first detected in southern Europe in 1989. The aim of the study was to assess the presence and the population dynamics of Phortica flies in a recently discovered new endemic area (Ticino, Southern Switzerland, south of the Alps) of T. callipaeda (site 1), at its border (site 2), at higher altitudes (beyond 1100 meters above sea level) within (site 3) or outside (site 4) the endemic area, and in a site north of the Alps (site 5). Flies were captured using two types of fruit-baited traps, the bait being changed once per week, and by netting around the eyes of a dog and human. A total of 1695 Phortica flies were collected. One of the fruit-baited traps, which can easily be assembled with cheap components, was found to be efficient for catching Phortica spp. At site 1, 644 such flies were collected with this trap during 34 weekly catches from April to October. The number of flies caught was highest at site 2 (n=903) and it was significantly lower (n=36) at site 5 north of the Alps. Virtually no Phortica at all were caught at higher altitudes (sites 3 and 4). Females were all in all predominant in the traps, accounting for 72.6% of Phortica flies (1150/1584), although males became dominant late in the season (male/female ratio 1.26 in October). In contrast, 80.2% of Phortica flies collected around the eyes of dog and human baits by netting (n=111) were males. No female at all was captured by netting until September. PCR for T. callipaeda was negative with all Phortica flies. Morphological examination of the 523 male flies based on features of the eye margin and the number of particular genital sensilla identified 89.1% P. semivirgo, 5.7% P. variegata but also 5.2% intermediate forms. Genetic analyses of partial mitochondrial cox1 and rDNA internal transcribed spacer 1 sequences revealed that these three morphotypes were genetically not distinguishable. This study confirms the presence of Phortica spp. north to the Alps and therefore the potential risk of T. callipaeda infection outside the currently known endemic region, depending on local abundance and longevity of the drosophilid vectors.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Based on the GARP model, the number of reports of Thelazia callipaeda infestation may be expected to increase over the next years in areas where it is now considered non-endemic.
“Based on this model, the number of reports of T. callipaeda infestation may be expected to increase over the next years in areas where it is now considered as non-endemic.”
From Vector-borne helminths of dogs and humans in Europe (2013) · cites this paper as [65]
Cites
Multiple sequence alignment with hierarchical clustering.
Corpet, F. (1988) · Nucleic Acids Research · doi:10.1093/nar/16.22.10881 · Cited by 5,575 · see citing works
Use of uracil DNA glycosylase to control carry-over contamination in polymerase chain reactions
Longo, M. C., Berninger, M. S., & Hartley, J. L. (1990) · Gene · doi:10.1016/0378-1119(90)90145-h · Cited by 965 · see citing works
TREECON: A software package for the construction and drawing of evolutionary trees
de Peer, Y. V., & Wächter, R. D. (1993) · Computer applications in the biosciences · doi:10.1093/bioinformatics/9.2.177 · Cited by 389 · see citing works
Zhang, D., & Hewitt, G. M. (1997) · Insect Molecular Biology · doi:10.1111/j.1365-2583.1997.tb00082.x · Cited by 204 · see citing works
eyeworm: an original endo- and ecto-parasitic nematode
OTRANTO, D., & TRAVERSA, D. (2005) · Trends in Parasitology · doi:10.1016/j.pt.2004.10.008 · Cited by 167 · see citing works
Otranto, D., Cantacessi, C., Testini, G., & Lia, R. P. (2006) · International Journal for Parasitology · doi:10.1016/j.ijpara.2006.06.006 · Cited by 157 · see citing works
Otranto, D., & Dutto, M. (2008) · Emerging infectious diseases · doi:10.3201/eid1404.071205 · Cited by 127 · see citing works
OTRANTO, D., LIA, R. P., CANTACESSI, C., TESTINI, G., TROCCOLI, A., SHEN, J. L., & WANG, Z. X. (2005) · Parasitology · doi:10.1017/s0031182005008395 · Cited by 125 · see citing works
Otranto, D., Ferroglio, E., Lia, R. P., Traversa, D., & Rossi, L. (2003) · Veterinary Parasitology · doi:10.1016/j.vetpar.2003.07.022 · Cited by 120 · see citing works
Otranto, D., Dantas‐Torres, F., Mallìa, E., DiGeronimo, P. M., Brianti, E., Testini, G., Traversa, D., & Lia, R. P. (2009) · Veterinary Parasitology · doi:10.1016/j.vetpar.2009.08.027 · Cited by 120 · see citing works
Human Thelaziosis—A Neglected Parasitic Disease of the Eye
Shen, J., Gasser, R. B., Chu, D., Zengxian, W., Yuan, X.-S., Cantacessi, C., & Otranto, D. (2006) · Journal of Parasitology · doi:10.1645/ge-823r.1 · Cited by 115 · see citing works
The zoophilic fruitfly Phortica variegata : morphology, ecology and biological niche
Otranto, D., Brianti, E., Cantacessi, C., Lia, R. P., & MÁCA, J. (2006) · Medical and Veterinary Entomology · doi:10.1111/j.1365-2915.2006.00643.x · Cited by 100 · see citing works
Emergence of canine ocular thelaziosis caused by Thelazia callipaeda in southern Switzerland
Malacrida, F., Hegglin, D., Bacciarini, L. N., Otranto, D., Nägeli, F., Nägeli, C., Bernasconi, C., Scheu, U., Balli, A., Robledo-Marenco, M. L., et al. (2008) · Veterinary Parasitology · doi:10.1016/j.vetpar.2008.07.029 · Cited by 92 · see citing works
Self-citationDorchies, P., Chaudieu, G., Siméon, L., Cazalot, G., Cantacessi, C., & Otranto, D. (2007) · Veterinary Parasitology · doi:10.1016/j.vetpar.2007.08.005 · Cited by 86 · see citing works
Presence of Thelazia callipaeda Railliet & Henry, 1910, in Piedmont, Italy.
Rossi, L., & Bertaglia, P. P. (1991) · PubMed · Cited by 73 · see citing works
Local transmission of the eye worm Thelazia callipaeda in southern Germany
Magnis, J., Naucke, T. J., Mathis, A., Deplazes, P., & Schnyder, M. (2009) · Parasitology Research · doi:10.1007/s00436-009-1678-4 · Cited by 50 · see citing works
Self-citationThelazia Callipaeda Railliet and Henry, 1910, in Man and Dog in Thailand
Bhaibulaya, M., Prasertsilpa, S., & Vajrasthira, S. (1970) · American Journal of Tropical Medicine and Hygiene · doi:10.4269/ajtmh.1970.19.476 · Cited by 42 · see citing works
Otranto, D., Stevens, J., Testini, G., et al. (2008) · Medical and Veterinary Entomology · doi:10.1111/j.1365-2915.2008.00714.x · Cited by 31 · see citing works
Shi, Y., Han, J., Yang, W., & Wei, D. X. (1988) · Transactions of the Royal Society of Tropical Medicine and Hygiene · doi:10.1016/0035-9203(88)90535-4 · Cited by 30 · see citing works
Baffi, M. A., & Ceron, C. R. (2002) · Biochemical Genetics · doi:10.1023/a:1020729612672 · Cited by 12 · see citing works
On the microdistribution of species of Drosophilidae and some other Diptera across a forest edge
Bächli, G., Flückiger, P. F., & Obrist, M. К. (2006) · DORA WSL (Swiss Federal Institute for Forest, Snow and Landscape Research) · doi:10.5169/seals-402916 · Cited by 10 · see citing works
Self-citationCantacessi, C., Traversa, D., Testini, G., et al. (2008) · Parasitology Research · doi:10.1007/s00436-008-1027-z · Cited by 7 · see citing works
Deckert, J. (2008) · Deutsche Entomologische Zeitschrift · doi:10.1002/mmnd.19870340409 · Cited by 7 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Vector-borne helminths of dogs and humans in Europe
Otranto, D., Dantas-Torres, F., Brianti, E., Traversa, D., Petrić, D., Genchi, C., & Capelli, G. (2013) · Parasites & Vectors · doi:10.1186/1756-3305-6-16 · Cited by 336 · see citing works
- Authors
- Roggero, C., Schaffner, F., Bächli, G., Mathis, A., & Schnyder, M.
- Affiliations
- University of Zurich (CH)
- Corresponding author
- Schnyder, M.
- Venue
- Veterinary Parasitology
- Publisher
- Elsevier BV
- Published
- 2010-07
- Volume
- 171
- Issue
- 1-2
- Pages
- 58-67
- ISSN
- 0304-4017 (ISSN-L)
- OpenAlex
- W1995142776
- Cited by
- 20
- References
- 23
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 3 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 2 · 2016: 1 · 2014: 1 · 2013: 2 · 2012: 1
- FWCI
- 1.04
- Type
- journal article
- Language
- en
- Open access
- green
- www.zora.uzh.ch
- Licence
- Locations
- Veterinary Parasitology (publishedVersion)
- PubMed (publishedVersion)
- Zurich Open Repository and Archive (University of Zurich) (acceptedVersion, other-oa)
- Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
- Zurich Open Repository and Archive (University of Zurich)
- Funders
- Universität Zürich
- Topics
- Health Sciences › Medicine › Infectious Diseases › Parasitic Diseases Research and Treatment
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Diptera species taxonomy and behavior
- Health Sciences › Veterinary › Small Animals › Helminth infection and control
- Keywords
- Thelazia callipaeda, intermediate hosts, eye worm, Phortica variegata, sex ratio, altitudinal distribution, mitochondrial cox1
- MeSH terms
- Animals, Dog Diseases, Dogs, Female, Male, Seasons, Switzerland, Thelazioidea, Eye Infections, Parasitic, Polymerase Chain Reaction, Spirurida Infections, Drosophilidae, DNA, Helminth
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
