Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables
The immature stages of Ochlerotatus albifasciatus develop in temporary pools. The present study aims at evaluating the seasonal dynamics of the aquatic stages of this mosquito, also analyzing the relationship among their presence and breeding success to some relevant climatic and environmental varia...
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2002
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v97_n6_p767_Fischer http://hdl.handle.net/20.500.12110/paper_00740276_v97_n6_p767_Fischer |
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paper:paper_00740276_v97_n6_p767_Fischer2023-06-08T15:07:03Z Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables Aedes Argentina Breeding sites Buenos Aires Culicidae Seasonal dynamics Urban rain pools fresh water rain animal Argentina article breeding disease carrier environment growth, development and aging mosquito population dynamics season statistical model temperature Animals Argentina Breeding Culicidae Disease Reservoirs Environment Fresh Water Logistic Models Population Dynamics Rain Seasons Temperature The immature stages of Ochlerotatus albifasciatus develop in temporary pools. The present study aims at evaluating the seasonal dynamics of the aquatic stages of this mosquito, also analyzing the relationship among their presence and breeding success to some relevant climatic and environmental variables in the ephemeral rain pools of an urban park. Nineteen cohorts of O. albifasciatus that developed synchronously after rain events were recorded in all seasons. The proportions of mosquito-positive pools were significantly higher during the fall-winter period than in the spring-summer months (p < 0.001). The presence of this mosquito species was positively related to the amount of rain (p < 0.001), whereas negatively correlated to air temperature (p < 0.05) within a 5.2 to 29.70°C range. The distribution of the number of cohorts per pool throughout the year was grouped (variance/mean: 3.96), indicating that these habitats were not equally suitable as breeding sites The immature stages of O. albifasciatus were detected in pools belonging to all of the categories of surface area, depth, duration, vegetation cover, and insolation. However, the proportion of pools where immature mosquitoes were detected was positively and significantly related to surface, depth, duration, and vegetation cover. On the other hand, the proportion of mosquito-positive pools was higher at an intermediate insolation degree. Our results suggest that although preimaginal stages were present in all seasons, high temperatures may be unfavorable to larval development, and substrate vegetation may regulate water temperature. The positive relationship between the proportion of mosquito-positive pools and pool size and duration might reflect a strategy of O. albifasciatus to accomplish immature development. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v97_n6_p767_Fischer http://hdl.handle.net/20.500.12110/paper_00740276_v97_n6_p767_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 |
Aedes Argentina Breeding sites Buenos Aires Culicidae Seasonal dynamics Urban rain pools fresh water rain animal Argentina article breeding disease carrier environment growth, development and aging mosquito population dynamics season statistical model temperature Animals Argentina Breeding Culicidae Disease Reservoirs Environment Fresh Water Logistic Models Population Dynamics Rain Seasons Temperature |
| spellingShingle |
Aedes Argentina Breeding sites Buenos Aires Culicidae Seasonal dynamics Urban rain pools fresh water rain animal Argentina article breeding disease carrier environment growth, development and aging mosquito population dynamics season statistical model temperature Animals Argentina Breeding Culicidae Disease Reservoirs Environment Fresh Water Logistic Models Population Dynamics Rain Seasons Temperature Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables |
| topic_facet |
Aedes Argentina Breeding sites Buenos Aires Culicidae Seasonal dynamics Urban rain pools fresh water rain animal Argentina article breeding disease carrier environment growth, development and aging mosquito population dynamics season statistical model temperature Animals Argentina Breeding Culicidae Disease Reservoirs Environment Fresh Water Logistic Models Population Dynamics Rain Seasons Temperature |
| description |
The immature stages of Ochlerotatus albifasciatus develop in temporary pools. The present study aims at evaluating the seasonal dynamics of the aquatic stages of this mosquito, also analyzing the relationship among their presence and breeding success to some relevant climatic and environmental variables in the ephemeral rain pools of an urban park. Nineteen cohorts of O. albifasciatus that developed synchronously after rain events were recorded in all seasons. The proportions of mosquito-positive pools were significantly higher during the fall-winter period than in the spring-summer months (p < 0.001). The presence of this mosquito species was positively related to the amount of rain (p < 0.001), whereas negatively correlated to air temperature (p < 0.05) within a 5.2 to 29.70°C range. The distribution of the number of cohorts per pool throughout the year was grouped (variance/mean: 3.96), indicating that these habitats were not equally suitable as breeding sites The immature stages of O. albifasciatus were detected in pools belonging to all of the categories of surface area, depth, duration, vegetation cover, and insolation. However, the proportion of pools where immature mosquitoes were detected was positively and significantly related to surface, depth, duration, and vegetation cover. On the other hand, the proportion of mosquito-positive pools was higher at an intermediate insolation degree. Our results suggest that although preimaginal stages were present in all seasons, high temperatures may be unfavorable to larval development, and substrate vegetation may regulate water temperature. The positive relationship between the proportion of mosquito-positive pools and pool size and duration might reflect a strategy of O. albifasciatus to accomplish immature development. |
| title |
Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables |
| title_short |
Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables |
| title_full |
Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables |
| title_fullStr |
Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables |
| title_full_unstemmed |
Ochlerotatus albifasciatus in rain pools of Buenos Aires: Seasonal dynamics and relation to environmental variables |
| title_sort |
ochlerotatus albifasciatus in rain pools of buenos aires: seasonal dynamics and relation to environmental variables |
| publishDate |
2002 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v97_n6_p767_Fischer http://hdl.handle.net/20.500.12110/paper_00740276_v97_n6_p767_Fischer |
| _version_ |
1768542118923468800 |