Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions

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 respo...

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Autores principales: Byttebier, Barbara, De Majo, María Sol, Fischer, Sylvia Cristina
Publicado: 2014
Materias:
Culicidae
hatching stimuli
temperate climate
unfavorable condition
Aedes
animal
article
cold
culture medium
oocyte
physiology
Animals
Cold Temperature
Culture Media
Ovum
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v51_n1_p97_Byttebier
http://hdl.handle.net/20.500.12110/paper_00222585_v51_n1_p97_Byttebier
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00222585_v51_n1_p97_Byttebier
record_format dspace
spelling paper:paper_00222585_v51_n1_p97_Byttebier2023-06-08T14:48:31Z Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions Byttebier, Barbara De Majo, María Sol Fischer, Sylvia Cristina Culicidae hatching stimuli temperate climate unfavorable condition Aedes animal article cold culture medium oocyte physiology Aedes Animals Cold Temperature Culture Media Ovum 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. Fil:Byttebier, B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:De Majo, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fischer, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v51_n1_p97_Byttebier http://hdl.handle.net/20.500.12110/paper_00222585_v51_n1_p97_Byttebier
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Culicidae
hatching stimuli
temperate climate
unfavorable condition
Aedes
animal
article
cold
culture medium
oocyte
physiology
Aedes
Animals
Cold Temperature
Culture Media
Ovum
spellingShingle Culicidae
hatching stimuli
temperate climate
unfavorable condition
Aedes
animal
article
cold
culture medium
oocyte
physiology
Aedes
Animals
Cold Temperature
Culture Media
Ovum
Byttebier, Barbara
De Majo, María Sol
Fischer, Sylvia Cristina
Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions
topic_facet Culicidae
hatching stimuli
temperate climate
unfavorable condition
Aedes
animal
article
cold
culture medium
oocyte
physiology
Aedes
Animals
Cold Temperature
Culture Media
Ovum
description 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.
author Byttebier, Barbara
De Majo, María Sol
Fischer, Sylvia Cristina
author_facet Byttebier, Barbara
De Majo, María Sol
Fischer, Sylvia Cristina
author_sort Byttebier, Barbara
title Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions
title_short Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions
title_full Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions
title_fullStr Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions
title_full_unstemmed Hatching response of aedes aegypti (diptera: Culicidae) eggs at low temperatures: Effects of hatching media and storage conditions
title_sort hatching response of aedes aegypti (diptera: culicidae) eggs at low temperatures: effects of hatching media and storage conditions
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v51_n1_p97_Byttebier
http://hdl.handle.net/20.500.12110/paper_00222585_v51_n1_p97_Byttebier
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AT demajomariasol hatchingresponseofaedesaegyptidipteraculicidaeeggsatlowtemperatureseffectsofhatchingmediaandstorageconditions
AT fischersylviacristina hatchingresponseofaedesaegyptidipteraculicidaeeggsatlowtemperatureseffectsofhatchingmediaandstorageconditions
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