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ABSTRACT In temperate regions, Aedes aegypti (L) (Diptera: Culicidae) populations remain in the egg stage during the cold season. To ensure the start of a new breeding season, eggs should hatch at the beginning of a favorable period. The aim of the current study was to investigate the hatching response of two Ae. aegypti egg batches collected and stored for 3 mo under different conditions, to different low immersion temperatures. Two different hatching media (water and yeast solution) were used for the first batch and only one (water) for the second egg batch. Eggs were immersed for 8 d, during which the number of hatched eggs was recorded daily. The proportion of hatched eggs, delay of the hatching response, proportion of dead larvae, and proportion of remaining eggs within the first egg batch were compared between the two hatching media at each temperature. These parameters also were compared between the two batches immersed in water. Hatching rates were higher and faster in the yeast solution. The hatching response was lower at lower immersion temperatures and among eggs stored under field conditions at colder temperatures (second batch). Among the eggs stored in the laboratory (first batch), older eggs exhibited lower hatching response. The proportion of dead larvae was higher in the yeast solution and in the eggs stored in the laboratory. The conditions that triggered a lower hatching response led to higher proportions of remaining eggs, allowing the population to maintain an egg bank for future favorable opportunities. © 2014 Entomological Society of America.


Documento: Artículo
Título:Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions
Autor:Byttebier, B.; De Majo, M.S.; Fischer, S.
Filiación:Departamento de Ecología, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:Culicidae; hatching stimuli; temperate climate; unfavorable condition; Aedes; animal; article; cold; culture medium; oocyte; physiology; Aedes; Animals; Cold Temperature; Culture Media; Ovum
Página de inicio:97
Página de fin:103
Título revista:Journal of Medical Entomology
Título revista abreviado:J. Med. Entomol.


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---------- APA ----------
Byttebier, B., De Majo, M.S. & Fischer, S. (2014) . Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions. Journal of Medical Entomology, 51(1), 97-103.
---------- CHICAGO ----------
Byttebier, B., De Majo, M.S., Fischer, S. "Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions" . Journal of Medical Entomology 51, no. 1 (2014) : 97-103.
---------- MLA ----------
Byttebier, B., De Majo, M.S., Fischer, S. "Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions" . Journal of Medical Entomology, vol. 51, no. 1, 2014, pp. 97-103.
---------- VANCOUVER ----------
Byttebier, B., De Majo, M.S., Fischer, S. Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions. J. Med. Entomol. 2014;51(1):97-103.