Genetic variability among populations of Lutzomyia (Psathyromyia) shannoni (Dyar 1929) (Diptera: Psychodidae: Phlebotominae) in Colombia

Population differentiation of Phlebotomus perniciosus in Spain following postglacial dispersal

“…The latter seems more likely, although it could be difficult to reconcile with the supposedly 'weak flight capabilities' of sandflies (Cárdenas et al, 2001). Weak flight has been used to help explain the limited gene flow (estimated from alloenzyme data) between Colombian populations of Lutzomyia longipalpis (Morrison et al, 1993) or Lutzomyia shannoni (Cardenas et al, 2001;Mukhopadhyay et al, 2001). However, the present results are consistent with the knowledge that adults of Phlebotomus (Larroussius) species can travel up to 2.2 km in as little as 3 days during the Mediterranean summer (Killick-Kendrick et al, 1984).…”

Relationships of new world Phlebotomine sand flies (Diptera: Psychodidae) based on fossil evidence

“…Even if we agree with some authors that P. shannoni is composed of more than one taxon or of genetically separated populations (Cárdenas et al 2001, Mukhopadhyay et al 2001, the phenotypic similarity observed between the putative species indicates that speciation was recent, insufficient time having elapsed to produce greater morphological diversity. Several neotropical sand flies are considered to represent cryptic species such as Nyssomyia intermedia s.l.…”

Distribution of Phlebotomine Sand Fly Genotypes (Lutzomyia shannoni, Diptera: Psychodidae) Across a Highly Heterogeneous Landscape

“…However, microhabitat associations, modes of dispersal, and population genetic structure of this human-associated ßy are presumably very distinct from those of forest species such as L. longipalpis. The current report, together with that of Cárdenas et al (2001), describes an initial characterization of enzyme polymorphisms among widely distributed L. shannoni Þeld populations across Colombia, South America.…”

“…This provides an opportunity to examine whether insects of low vagility have a reduced genetic variability (due to genetic drift) within a patch and the degree of differentiation among patches. Third, due to difÞculties of access to habitat and procurement of numerically adequate samples, no other tropical forest sand ßy has been characterized for its population genetic structure, although recently, isolated populations in the mountains of southern Colombia have been compared by isoenzyme phenotypes (Cárdenas et al 2001). …”