Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina
In temperate regions, populations of Aedes aegypti survive the cold season in the egg stage. In the present work, we studied the cold-season mortality of Ae. aegypti eggs and their subsequent hatching pattern in Buenos Aires city. Eggs were exposed during the winter season (three months) in three ne...
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10811710_v36_n1_p94_Fischer http://hdl.handle.net/20.500.12110/paper_10811710_v36_n1_p94_Fischer |
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paper:paper_10811710_v36_n1_p94_Fischer2023-06-08T16:05:41Z Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina Fischer, Sylvia Cristina Alem, Iris Soledad De Majo, María Sol Schweigmann, Nicolás Joaquin Egg survival Hatching Population dynamics Temperate climate Winter diapauses Aedes animal Argentina article cold oocyte physiology population dynamics season Aedes Animals Argentina Cold Temperature Ovum Population Dynamics Seasons Aedes aegypti Culicidae Diptera In temperate regions, populations of Aedes aegypti survive the cold season in the egg stage. In the present work, we studied the cold-season mortality of Ae. aegypti eggs and their subsequent hatching pattern in Buenos Aires city. Eggs were exposed during the winter season (three months) in three neighborhoods located along a gradient of distance toward the Río de la Plata River, coincident with a gradient of activity of Ae. aegypti. Results showed mortalities lower (30.6%) than those from tropical regions during the dry season. Significant differences were detected among the egg mortalities of each site with a maximum value at the site nearest the Río de la Plata River (50%), and a minimum value at the most continental site (9%). Post-experimental hatching response of eggs differed between sites, with the highest proportion of hatched eggs during the first immersion in the site nearest to the river and the lowest proportion in the most continental site. The hatching proportion also differed between age classes, with older (early-laid) eggs hatching later than new (late-laid) ones. Our results provide the first information of Ae. aegypti egg mortality in temperate South America and support the hypothesis that differences in egg mortality are associated with abundance patterns of Ae. aegypti in Buenos Aires city. © 2011 The Society for Vector Ecology. Fil:Fischer, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alem, I.S. 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:Schweigmann, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10811710_v36_n1_p94_Fischer http://hdl.handle.net/20.500.12110/paper_10811710_v36_n1_p94_Fischer |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Egg survival Hatching Population dynamics Temperate climate Winter diapauses Aedes animal Argentina article cold oocyte physiology population dynamics season Aedes Animals Argentina Cold Temperature Ovum Population Dynamics Seasons Aedes aegypti Culicidae Diptera |
spellingShingle |
Egg survival Hatching Population dynamics Temperate climate Winter diapauses Aedes animal Argentina article cold oocyte physiology population dynamics season Aedes Animals Argentina Cold Temperature Ovum Population Dynamics Seasons Aedes aegypti Culicidae Diptera Fischer, Sylvia Cristina Alem, Iris Soledad De Majo, María Sol Schweigmann, Nicolás Joaquin Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina |
topic_facet |
Egg survival Hatching Population dynamics Temperate climate Winter diapauses Aedes animal Argentina article cold oocyte physiology population dynamics season Aedes Animals Argentina Cold Temperature Ovum Population Dynamics Seasons Aedes aegypti Culicidae Diptera |
description |
In temperate regions, populations of Aedes aegypti survive the cold season in the egg stage. In the present work, we studied the cold-season mortality of Ae. aegypti eggs and their subsequent hatching pattern in Buenos Aires city. Eggs were exposed during the winter season (three months) in three neighborhoods located along a gradient of distance toward the Río de la Plata River, coincident with a gradient of activity of Ae. aegypti. Results showed mortalities lower (30.6%) than those from tropical regions during the dry season. Significant differences were detected among the egg mortalities of each site with a maximum value at the site nearest the Río de la Plata River (50%), and a minimum value at the most continental site (9%). Post-experimental hatching response of eggs differed between sites, with the highest proportion of hatched eggs during the first immersion in the site nearest to the river and the lowest proportion in the most continental site. The hatching proportion also differed between age classes, with older (early-laid) eggs hatching later than new (late-laid) ones. Our results provide the first information of Ae. aegypti egg mortality in temperate South America and support the hypothesis that differences in egg mortality are associated with abundance patterns of Ae. aegypti in Buenos Aires city. © 2011 The Society for Vector Ecology. |
author |
Fischer, Sylvia Cristina Alem, Iris Soledad De Majo, María Sol Schweigmann, Nicolás Joaquin |
author_facet |
Fischer, Sylvia Cristina Alem, Iris Soledad De Majo, María Sol Schweigmann, Nicolás Joaquin |
author_sort |
Fischer, Sylvia Cristina |
title |
Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina |
title_short |
Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina |
title_full |
Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina |
title_fullStr |
Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina |
title_full_unstemmed |
Cold season mortality and hatching behavior of Aedes aegypti L. (Diptera: Culicidae) eggs in Buenos Aires City, Argentina |
title_sort |
cold season mortality and hatching behavior of aedes aegypti l. (diptera: culicidae) eggs in buenos aires city, argentina |
publishDate |
2011 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10811710_v36_n1_p94_Fischer http://hdl.handle.net/20.500.12110/paper_10811710_v36_n1_p94_Fischer |
work_keys_str_mv |
AT fischersylviacristina coldseasonmortalityandhatchingbehaviorofaedesaegyptildipteraculicidaeeggsinbuenosairescityargentina AT alemirissoledad coldseasonmortalityandhatchingbehaviorofaedesaegyptildipteraculicidaeeggsinbuenosairescityargentina AT demajomariasol coldseasonmortalityandhatchingbehaviorofaedesaegyptildipteraculicidaeeggsinbuenosairescityargentina AT schweigmannnicolasjoaquin coldseasonmortalityandhatchingbehaviorofaedesaegyptildipteraculicidaeeggsinbuenosairescityargentina |
_version_ |
1768544971507367936 |