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PubMed1979

Leishmania herreri sp. n. from sloths and sandflies of Costa Rica.

Leishmania herreri sp. n. is described after isolation in pure culture from blood, viscera and skin of two-toed (Choloepus hoffmanni) and three-toed (Bradypus griseus) sloths from Costa Rica. Also, it was isolated from the following sandflies: Lutzomyia trapidoi, L. ylephiletor and L. shannoni. The amastigote forms were not seen in the final hosts but they were obtained in tissue culture at 33 C. Both promastigotes and amastigotes failed to infect hamsters. The new parasite is isolated frequently in culture, mixed with other hemoflagellates such as L. braziliensis, Endotrypanum sp. and Trypanosoma rangeli.

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PubMedDate not supplied

[The Phlebotomine sandflies (Diptera) from the Mayombe area in the Popular Republic of Congo (author's transl)].

Fifteen species and subspecies of Phlebotomine sandflies have been inventorized in the Mayombe forest in the People's Republic of the Congo. Nine of them are confined strictly to the rain forest; the others belong to secondary forest, clearing or savannah. We have drawn a comparison between the Phlebotomine fauna in the Mayombe and those existing in several other dense Congolense forests.

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PubMedDate not supplied

[Virulent properties of Leishmania tropica major strains isolated from sandflies in the subzone of the northern deserts].

On the territory of the Karakalpak ASSR the infection of sand flies Ph. papatasi, Ph. caucasicus, Ph. andrejevi and Ph. monogolensis with the agent L. tropica major ammounts, on the average, to 39.3%. The virulence of 88 investigated strains of Leishmania for white mice estimated by their infection and the duration of incubation was found to be different; one half of the strains had high, one third--average, and the other strains--low virulence.

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PubMedDate not supplied

[Phenology of sandflies of the subspecies Paraphlebotomus inhabiting the burrow of the great gerbil in the Karshi Steppe].

Oberservations were conducted (1960 to 1973) on the sand flies of the subgenus Paraphlebotomus inhabiting the burrows of Rhombomys opimus in the Karshinskaya steppe (Uzbekistan). Ph. mongolensis is most abundant in oasis, Ph. caucasicus--in loess low-mountain areas. Throughout the territory investigated Ph. mongolensis has two generations per season. The emergence of imago of this species in oasis begins early in May with the first peak of abundance at the end of May--beginning of June and with the second peak in the first decade of August. The flight of Ph. mongolensis ceases in general to the middle of September. In the northern part of the territory investigated Ph. caucasicus has two mass generations with peaks in the second decade of June--first-second decade of August. In the southern part of the territory three peaks of abundance of ph. caucasicus were noted: in the middle of May, end of June--beginning of July and the end of August--beginning of September. Therefore, the presence of three generations per season can be suggested here.

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PubMedDate not supplied

[Phenology of sandflies of the genus Sergentomyia in the Karshi Steppe (Phlebotominae)].

Phenological observations on sand flies of the genus Sergentomyia inhabiting the burrows of Rhombomys opimus from the Karshinskaya steppe were carried out for many years. The emergence of two mass generations of S. arpaklensis and S. grekovi was noted for the spring-summer period. In S. arpaklensis from oasis the appearance of the first individuals was noted mostly often in the II--III decade of May, the first peak of abundance--in the II--III decade of June and the second peak of abundance--early in August. In S. grekovi the appearance of the first individuals was observed at the end of April--the very beginning of May, the first peak of abundance--in the second half of May and the second peak--in the first half of September. During July--August the abundance of S. grekovi is rather low. Throughout the desert areas southward from oasis all phenological phenomena take place in both species ten days earlier than in oasis. S. arpaklensis is characterised by its very high abundance in oasis and in foothill loes plain, sharp fluctuations in the abundance both in seasons and years and by the prevalence of females over males during the active flight.

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