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Revista do Instituto de Medicina Tropical de São Paulo

Print version ISSN 0036-4665

Rev. Inst. Med. trop. S. Paulo vol.38 no.1 São Paulo Jan./Feb. 1996

http://dx.doi.org/10.1590/S0036-46651996000100006 

EPIDEMIOLOGY

 

Population dynamics and biting rhythm of the anthropophilic sandfly Lutzomyia cruciata (Diptera: Psychdidae) in Southeast, Mexico

 

Dinámica poblacional y ritmo de picadura de la papalotilla antropofílica Lutzomyia cruciata (Diptera: Psychodidae) en el sureste de México

 

 

Eduardo A. Rebollar-TellezI; Filiberto Reyes-VillanuevaII; Ildefonso Fernandez-SalasII; Fernando J. Andrade-NarvaezI

IDepto. Inmunologia, CIR Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán, Apdo. Postal 2-1277. Mérida, Yucatán 97240, México
IILab. Entomología Médica, Fac. Ciencias Biológicas, Universidad Autónoma de Nuevo León, Apdo. Postal 109-F, San Nicolás de los Garza, Nuevo León 66451, México

Correspondence to

 

 


SUMMARY

Sandflies attracted by human bait were caught in an endemic focus of localized cutaneous leishmaniasis in the state of Campeche, Mexico. Catches were carried out monthly from February 1994 to January 1995 between 18:00 and 22:00 h. Lutzomyia cruciata was the only species caught. The highest population peak of Lu. cruciata was found in March with lesser peaks in February, December 1994, and January 1995. Maximum biting rate of Lu. cruciata was found between 18:00 and 19:00 h. The host-seeking females of Lu. cruciata were directly related to levels of humidity between 88 and 100%. Low and high temperature had a negative effect upon Lu. cruciata activity. The possible role of Lu. cruciata as vector of leishmaniasis in the state of Campeche, Mexico is discussed.

Keywords: Lutzomyia cruciata; Population dynamics; Transmission cycle; Diptera; Psychodidae.


RESUMO

Flebótomos atraídos por cebo humano fueron colectados en un foco endémico de leishmaniais cutánea localizada en el estado de Campeche, México. Colectas fueron llevadas a cabo mensualmente de Febrero 1994 a Enero 1995 entre las 18:00 a 22:00 h. Lutzomyia cruciata fue la única especie capturada. El mayor pico poblacional fue encontrado en Marzo con picos similares en Febrero, Diciembre 1994 y Enero 1995. La tasa máxima de picadura de Lu. cruciata estuvo comprendida entre 18:00 a 19:00 h. Las hembras hambientas de Lu. cruciata, fueron directamente relacionadas con niveles de humedad relativa entre 88 a 100%. Bajas y altas temperaturas tuvieron un efecto negativo sobre la actividad de Lu. cruciata. Se discute el posible papel de Lu. cruciata como vector de leishmaniasis en el estado de Campeche, México.


 

 

Full text available only in PDF format.

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ACKNOWLEDGEMENT

The authors wish to thank the inhabitants of La Libertad, Campeche, Mexico for their hospitality. The senior writer wishes to thank N. Van Wynsberghe for reading and correcting an early draft of this paper. This investigation received financial support from UNDP/WORLD BANK/WHO Special Programme for Research in Tropical Diseases (TDR) ID 900248.

 

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Correspondence to:
Eduardo A. Rebollar-Téllez
Departamento de Inmunologia CIR Dr. Hideyo Noguchi, Universidad Autónoma de Yucatan
Apartado Postal 2-1277, Mérida, Yucatán 97240 México

Recebido para publicação em 19/09/1995.
Aceito para publicação em 27/12/1995.