Phenotypic variation among local populations of phlebotomine sand flies (Diptera: Psychodidae) in southern Turkey

Aytekin, A. Murat; Alten, Bülent; Çağlar, Selim Süalp; Özbel, Yusuf; Kaynas, Sinan; Şimşek, Fatih Mehmet; Kasap, Özge Erişöz; Belen, Aslı

doi:10.3376/1081-1710(2007)32[226:pvalpo]2.0.co;2

Cited by 25 publications

(19 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cryptic species of insects showed distinct shapes in Triatominae [26-28], sandflies [29], parasitoid hymenoptera [23,30,31], fruit flies [32] and screwworm flies [33]. Morphometric discrimination is not confined to species determination, it has also been used to question species boundaries [34], or to synonymize controversial taxa [35]. …”

Section: Resultsmentioning

confidence: 99%

The exchangeability of shape

2010

View full text Add to dashboard Cite

BackgroundLandmark based geometric morphometrics (GM) allows the quantitative comparison of organismal shapes. When applied to systematics, it is able to score shape changes which often are undetectable by traditional morphological studies and even by classical morphometric approaches. It has thus become a fast and low cost candidate to identify cryptic species. Due to inherent mathematical properties, shape variables derived from one set of coordinates cannot be compared with shape variables derived from another set. Raw coordinates which produce these shape variables could be used for data exchange, however they contain measurement error. The latter may represent a significant obstacle when the objective is to distinguish very similar species.ResultsWe show here that a single user derived dataset produces much less classification error than a multiple one. The question then becomes how to circumvent the lack of exchangeability of shape variables while preserving a single user dataset. A solution to this question could lead to the creation of a relatively fast and inexpensive systematic tool adapted for the recognition of cryptic species.ConclusionsTo preserve both exchangeability of shape and a single user derived dataset, our suggestion is to create a free access bank of reference images from which one can produce raw coordinates and use them for comparison with external specimens. Thus, we propose an alternative geometric descriptive system that separates 2-D data gathering and analyzes.

show abstract

Section: Resultsmentioning

confidence: 99%

The exchangeability of shape

2010

View full text Add to dashboard Cite

show abstract

“…Until now, no study using a geometric morphometrics approach has been done to investigate phenotypic variations of P. ariasi in France. Significant morphometric wing shape variations were found in other sand fly species within populations originating from various Mediterranean regions, forming clusters or latitudinal clines in other species, such as P. papatasi [12, 13] and P. sergenti [14, 15]. These studies highlighted the existence of local phenotypic variations linked to environmental factors.…”

Section: Introductionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

“…Previous studies highlighted the impact of altitude and temperature (two correlated parameters) on sand fly biology [12, 40, 41]. The size of adults is largely influenced by temperature, with larger adults found at low temperatures and smaller adults at high temperatures [12]. It is known that larvae development is influenced by temperature conditions [12, 42]; a high temperature will produce a rapid development and thus small individuals.…”

Section: Discussionmentioning

confidence: 99%

“…The size of adults is largely influenced by temperature, with larger adults found at low temperatures and smaller adults at high temperatures [12]. It is known that larvae development is influenced by temperature conditions [12, 42]; a high temperature will produce a rapid development and thus small individuals. Assuming that wing size reflects the size of specimens, centroid size should predict larger individuals at lower temperatures and thus at higher altitudes [43].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Ecology and morphological variations in wings of Phlebotomus ariasi (Diptera: Psychodidae) in the region of Roquedur (Gard, France): a geometric morphometrics approach

et al. 2016

Self Cite

View full text Add to dashboard Cite

Background Phlebotomus ariasi Tonnoir, 1921, is the predominant sand fly species in the Cevennes region and a proven vector of Leishmania infantum, which is the main pathogen of visceral and canine leishmaniasis in the south of France. Even if this species is widely present in Western Mediterranean countries, its biology and ecology remain poorly known. The main goals of this work are to investigate the phenotypic variation of P. ariasi at a local scale in a region characterized by climatic and environmental fluctuations, and to determine if slope and altitude could affect the sand fly phenotypes.ResultsSand flies were captured along a 14 km-long transect in 2011 from May to October. At the same time, environmental data such as altitude and slope were also collected. Morphological analysis of P. ariasi wings was performed by a geometric morphometrics approach. We found morphological variation among local populations of P. ariasi. Strong shape and size variations were observed in the course of the season (particularly in June and July) for both genders. During June, we highlighted differences in wing phenotypes according to altitude for both sexes and to slope and station for females.ConclusionsThe phenotypic variations observed in P. ariasi along the studied transect indicated these populations are subjected to environmental pressures. Nevertheless, it seems that sand flies are more sensitive to extrinsic factors in June and July, suggesting a phenotypic plasticity.

show abstract